The unique identifier of a container element. This attribute is generally required within the context of a WITSML server. There should be no assumption as to the semantic content of this attribute. This should only be used with recurring container types (i.e., maxOccurs greater than one). The value is only required to be unique within the context of the nearest recurring parent element. The business associate describes any company, person, group, consultant, etc, which is associated within a context (e.g., a well). The information contained in this module is: (1) contact information, such as address, phone numbers, email, (2) alternate name, or aliases, and (3) associations, such as the business associate that this one is associated with, or a contact who is associated with this business associate. The name of the business associate. This can be the name of a person, business, group, etc. The role of the business associate within the context. For example, "driller" or "operator", "lead agency - CEQA compliance" "regulatory contact", "safety contact". A business associate will generally have one role but the role may be called different things in different naming systems. If the business associate is a person, this specifies the component names of the person. The alias is an alternate name of a business associate. It is generally associated with a naming system. An alias is not necessarily unique within the naming system. Note that address may occur more than once, because it may be necessary to give a physical address, a mailing address, or both. The various types of phone numbers may be given. The may be office or home, they may be a number for a cell phone, or for a fax, etc. Attributes of PhoneNumber declare the type of phone number that is being given. The email address may be home, office, or permanent. More than one may be given. The preferred method of being contacted within the context of this role. A pointer to another business associate that this business associate is associated with. The most common situation is that of an employee being associated with a company. But it may also be, for example, a work group associated with a university. A pointer to a business associate (generally a person) who serves as a contact for this business associate. The count of the number of personnel in a group. A general comment. This should not be used to carry semantic information. This is not intended to be machine interpretable. Unique identifier for the business associate. WITSML - Common Data Component Schema An identifier to indicate the data originator. This identifies the server that originally created the object and thus most of the uids in the object (but not necessarily the uids of the parents). This is typically a url. When the data was created at the persistent data store. Last change of any element of the data at the persistent data store. The change time is not updated for a growing object while it is growing. The item state for the data object. Comments and remarks. The value of an independent (index) variable in a row of the curve table. The units of measure are specified in the curve definition. The first value corresponds to order=1 for colums where isIndex is true. The second to order=2. And so on. The number of index and data values must match the number of columns in the table. The value of a dependent (data) variable in a row of the curve table. The units of measure are specified in the curve definition. The first value corresponds to order=1 for columns where isIndex is false. The second to order=2. And so on. The number of index and data values must match the number of columns in the table. The definition of a curve. The order of the value in the index or data tuple. If isIndex is true this is the order of the (independent) index element. If isIndex is false, this is the order of the (dependent) value element. The name of the variable in this curve. True (equal "1" or "true") indicates that this is an independent variable in this curve. At least one column column should be flagged as independent. The measure class of the variable. This defines which units of measure are valid for the value. The unit of measure of the variable. The unit of measure must match a unit allowed by the measure class. Unique identifier for the port. WITSML - Custom or User Defined Element and Attributes Component Schema. Specify custom element, attributes, and types in the custom data area. Any element or attribute in any namespace. It is strongly recommended that all custom data definitions be added to a unique namespace. A general timestamped comment structure. The name of the person providing the comment. The role of the person providing the comment. This is the role of the person within the context of comment. The date and time where the comment begins to be valid. The date and time where the comment is no longer valid. The relevant comment. The unique identifier of the recurring element. A possibly temperature and pressure corrected desity value. The density of the product. The temperature to which the density has been corrected. If not given then the ambient temperature is assumed. If given, then a pressure should also be given. Common standard temperatures are: 0 degC, 15 degC, 60 degF. The pressure to which the density has been corrected. If not given then the ambient pressure is assumed. If given, then a temperature should also be given. Common standard pressures are: 1 atm and 14.696 psi (which are equivalent). A schema to capture a set of data that is relevant for many exchange documents. It includes information about the file that was created, and high-level information about the data that is being exchanged within the file. An identifier for the document. This is intended to be unique within the context of the NamingSystem. Zero or more alternate names for the document. These names do not need to be unique within the naming system. The date of the creation of the document. This is not the same as the date that the file was created. For this date, the document is considered to be the set of information associated with this document information. For example, the document may be a seismic binset. This represents the date that the binset was created. The FileCreation information would capture the date that the XML file was created to send or exchange the binset. A document class. Examples of classes would be a metadata classification or a set of keywords. The information about the creation of the exchange file. This is not about the creation of the data within the file, but the creation of the file itself. Information about the security to be applied to this file. More than one classification can be given. A free-form string that allows a disclaimer to accompany the information. A collection of events that can document the history of the data. The owner of the data. WITSML query parameters. An optional comment about the document. A structure for WITSML query parameters. The intent is to allow a query for all objects within an index range (whether or not the object is growing). These would typically be something like a daily report. The minimum start time for an object. This only applies to objects with a root level date and/or dateTime element(s). The objects may or not be growing objects but the See the API specification for behavior related to this query parameter. The maximum start time for an object. This only applies to objects with a root level date and/or dateTime element(s). See the API specification for behavior related to this query parameter. A block of information about the creation of the XML file. This is different than the creation of the data that is included within the file. The date and time that the file was created. If appropriate, the software that created the file. This is a free form string, and may include whatever information is deemed relevant. The person or business associate that created the file. Any comment that would be useful to further explain the creation of this instance document. Information about the security classification of the document. This is intended as a documentation of the security so that the file will not inadvertently be sent to someone who is not allowed access to the data. This block also carries a date that the security classification expires. For example, a well log is confidential for a period of time, and then becomes open. All security classes are characterized by their classification systems. The security class in which this document is classified. Examples would be confidential, partner confidential, tight. The meaning of the class is determined by the System in which it is defined. The security classification system. This gives context to the meaning of the Class value. The date on which this security class is no longer applicable. A general comment to further define the security class. The audit records what happened to the data, to produce the data that is in this file. It consists of one or more events. An event type captures the basic information about an event that has affected the data. The date on which the event took place. The party responsible for the event. A free form comment that can further define the event that occurred. An general address structure. This form is appropriate for most countries. The Name line of an address. If missing, use the Name of the business associate. The Street is a generic term for the middle lines of an address. They may be a street address, PO Box, Suite number, or any lines that come between the "name" and "city" lines. This may be repeated for up to four, ordered lines. The City for the business associate's address The GeneralAddress allows the choice of a State, Province, or County element. It is assumed that different elements would be appropriate in different countries. A user community should choose which element is appropriate in the various countries. The Country may be included. Although this is optional, it is probably required for most uses. A postal code, if appropriate for the country. In the USA this would be the five or nine digit zip code. The type of address: mailing, physical, or both. The unique identifier of the recurring element. A geographic context of a report. The name of the country. The state of province within the country. The name of the field within whose context the report exists. An offshore context. An general comment that further explains the offshore location. A type of offshore location that captures the North Sea Offshore terminology. An optional, uncontrolled value, which may be used to describe the general area of offshore North Sea in which the point is located. The number or letter of the quadrant in the North Sea. A lower case letter assigned if a block is subdivided. A generic type of offshore location. This allows an offshore location to be given by an Area Name, and up to four block names. A comment is also allowed. A general meaning of Area. It may be as general as 'UK North Sea' or 'Viosca Knoll'. The user community must agree on the meaning of this element. One to four block ID's, that can more tightly locate the object. The BlockID should be an identifying name or code. The user community must agree on the exact meaning of this element. An offshore location using the North Sea Offshore terminology. An general comment that further explains the offshore location. The components of a persons name. A name prefix. Such as, Dr, Ms, Miss, Mr, etc. The persons first name. The persons middle name or initial name. The persons last or given name. A name suffix. Such as Esq, Phd, etc. WITSML - Alert Component Schema. An XPATH to the target value within the message containing this XPATH value. The level of the alert. The type of alert. For example "off specification". A textual decription of the alert. WITSML - Product Volume component schema for defining business units. The type of business unit. The human contextual name of the business unit. A textual description of the business unit. A component part of the unit. The composition of a unit may vary with time. This defines the ownership share or account information for a sub unit within the context of the whole unit. For ownership shares, at any one point in time the sum of the shares should be 100%. Unique identifier for the business unit. WITSML - Product Volume component schema for defining ownership shares of business units. Points to business unit which is part of another business unit. Defines the ownership share in the parent unit at a point in time. This commonly applies at a parent source unit (e.g., a field or platform). Defines account information in the parent unit. This commonly applies at a parent terminus unit (e.g., a terminal), Unique identifier for the business unit. WITSML - Product Volume component schema for defining ownership shares. The percent ownership of the sub-unit in the unit during the specified time. The date on which the ownership became valid. The final date on which the ownership was valid. If no end date is specified, the share is considered to still be valid. Unique identifier for the business unit. WITSML - Product Volume component schema for defining account information. The identifier of the account of the sub-unit within the whole business unit. The product associated with the account identifier. Unique identifier for the business unit. Defines a type of business unit. //////////////////////////////////////////////////////////////// THESE VALUES WILL BE MOVED TO THE ancilary/enumValues.xsd FILE. //////////////////////////////////////////////////////////////// xxxxxxxxxxxxx xxxxxxxxxxxxx xxxxxxxxxxxxx xxxxxxxxxxxxx xxxxxxxxxxxxx xxxxxxxxxxxxx The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations. WITSML - Product Volume Component Content Component Schema. The type of product whose relative content is being described. This should be a specific component (e.g., water) rather than a phase (e.g., aqueous). The type of product to which the product is being compared. If not given then the product is being compared against the overall flow stream. The properties whose existance is independent of a specific location in the hierarchy. The unique identifier of the recurring element. WITSML - Report Facility Component Schema. The name of the facility. The name can be qualified by a naming system. This also defines the kind of facility. For facilities whose name is unique within the context of another facility, the name of the parent facility. For example, if name represents a completion, then facilityParent1 would represent the name of the well within which name was unique. The name can be qualified by a naming system. This also defines the kind of facility. For facilities whose name is unique within the context of another facility, the name of the parent facility of parent1. The name can be qualified by a naming system. This also defines the kind of facility. An alternatative name of a facility. This is generally unique within a naming system. The above contextually unique name (that is, within the context of a parent) should also be listed as an alias. The Product Flow Unit representing the facility. This must be unique within the context of the Product Flow Network. The Product Flow Network representing the facility. This can only be given if unit is given. This is only required if the network is not the same as the primary network that represents the Product Flow Model. This must be unique within the context of the Product Flow Model represented by this report. The name and type of a facility whose context is relevant to this facility. True (or 1) indicates that the well is producing. False (or 0) or not given indicates that the well is not producing. This only applies if the facility is a well or wellbore. True (or 1) indicates that the well is injecting. False (or 0) or not given indicates that the well is not injecting. This only applies if the facility is a well or wellbore. The storage capacity of the facility (e.g., a tank). The amount of time that the facility was active during the reporting period. The reason for any down time during the reporting period. Usage values for one parameter associated with the facility. Reports a flow of a product. A timestamped remark about the facility. Unique identifier for the Product Volume Facility. WITSML - Product Volume Flow Component Schema. The name of this flow within the context of this report. This might reflect some combination of the kind of flow, port, qualifier and related facility. Indicates the type of flow that is being reported. The type of flow is an indication of the overall source or target of the flow. A production flow has one or more wells as the originating source. An injection flow has one or more wells as the ultimate target. An import flow has an offsite source. An export flow has an offiste target. A consumption flow generally has a kind of equipment as a target. The Product Flow Port to which the flow is assigned. This is the port on the Product Flow Unit that represents the facility. The kind of port that this flow represents: inlet or outlet. The name of the facility represented by the port where the measurements were taken. The name can be qualified by a naming system. This also defines the kind of facility. An alternatative name of a facility represented by the port. This is generally unique within a naming system. The above contextually unique name (that is, within the context of a parent) should also be listed as an alias. Qualifies the type of flow that is being reported. Defines a specialization of the qualifier value. This should only be given if a qualifier is given. A second facility related to this flow. For a production flow, this would represent a role of 'produced for'. For an import flow, this would represent a role of 'inport from'. For an export flow, this would represent a role of 'export to'. A timestamp representing the version of this data. A flow (same port and products) with a more recent timestamp will represent the "current" version. Identifies the source of the version. This will commonly be the name of the software which created the version. This is a pointer to the flow from which this flow was derived. The properties whose existance is independent of a specific location in the hierarchy. Reports a product flow stream. A timestamped remark about the flow. Unique identifier for the Product Volume Flow. WITSML - Product Volume Facility Parameter Set Component Schema. The name of the facility parameter. This should reflect the business semantics of all values in the set and not the underlying kind. For example, specify "diameter" rather than "length" or "distance". The port to which this parameter is assigned. This must be a port on the unit representing the parent facility of this parameter. If not specified then the parameter represents the unit. If the value is a measure (value with unit of measure), this defines the measurement class of the value. The units of measure for the value must conform to the list allowed by the measurement class in the unit dictionary file. Mutually exclusive with curveDefinition. If the value is a curve, this defines the meaning of the one column in the table representing the curve. Mutually exclusive with measureClass. Qualifies the type of parameter that is being reported. Defines a specialization of the qualifier value. This should only be given if a qualifier is given. A timestamp representing the version of this data. A parameter set with a more recent timestamp will represent the "current" version. Identifies the source of the version. This will commonly be the name of the software which created the version. The type of product that is being reported. This would be useful for something like specifying a tank procuct volume or level. A parameter value, possibly at a time. If a time is not given then only one parameter should be given. If a time is specified with one value then time should be specified for all values. Each value in a time series should be of the same underling kind of value (for example, a length measure). A comment about the parameter. The unique identifier of the recurring element. WITSML - Parameter Value Component Schema. The date and time at which the parameter applies. If no time is specified then the value is static. A measure value. Unless the parameter is defined as a tuple, only one value should be specified. The measure class is defined by measureClass in the parent set. The unit of measure must conform to the units allowed by the measure class in the unit dictionary file. If the 'status' attribute is absent and the value is not "NaN", the data value can be assumed to be good with no restrictions. A value of "NaN" should be interpreted as null and should be not be given unless a status is also specified to explain why it is null. The values in one row of a curve. The aggregate of the curve rows represent the curve. A string value. If the 'status' attribute is absent and the value is not "NaN", the data value can be assumed to be good with no restrictions. A value of "NaN" should be interpreted as null and should be not be given unless a status is also specified to explain why it is null. An integer value. If the 'status' attribute is absent and the value is not "NaN", the data value can be assumed to be good with no restrictions. A value of "NaN" should be interpreted as null and should be not be given unless a status is also specified to explain why it is null. A port related to the parameter. If a port is given then the corresponding unit usually must be given. For example, an "offset along network" parameter must specify a port from which the offset was measured. A unit related to the parameter. For example, an "offset along network" parameter must specify a port (on a unit) from which the offset was measured. An indication of some sort of abnormal condition relative this parameter. The unique identifier of the recurring element. WITSML - Product Volume Period Component Schema. The type of period that is being reported. If not specified and a time is not given then the period is defined by the reporting period. A reporting period that is different from the overall report period. For example, a particular day within a monthly report. This period must conform to the kind of interval. If one value from a pair are given then both values must be given. The beginning date and time that the period represents. The day that the period represents. The beginning date and time that the period represents. The ending date and time that the period represents. The beginning date that the period represents. The ending date that the period represents. The properties whose existance is independent of a specific location in the hierarchy. The relative amount of a component product in the product stream. Provides the sales context for this period. An indication of some sort of abnormal condition relative the values in this period. A timestamped remark about the amounts. Unique identifier for the Product Volume Period. Product Volume Port Differential characteristics. A port on the other end of an internal connection. This should always be specified if a Product Flow Network is being referenced by this report. If this is not specified then there is an assumption that there is only one other port for the unit. For example, if this end of the connection represents an inlet port then the implied other end is the outlet port for the unit. The differential pressure between the ports. The differential temperature between the ports. The size of the choke. This characterizes the overall unit with respect to the flow restriction between the ports. The restriction might be implemented using a valve or an actual choke. The relative size of the choke restriction. This characterizes the overall unit with respect to the flow restriction between the ports. The restriction might be implemented using a valve or an actual choke. The unique identifier of the recurring element. WITSML - Product Volume Product Component Schema. The type of product that is being reported. The name of product that is being reported. This is reserved for generic kinds like chemical. This factor describes the fraction of fluid in the source flow that is allocated to this product stream. The volumes reported here are derived from the source flow based on this split factor. This should be an allocation flow. A reference to the source flow whose volumes are used to determine the volumes within this target product stream based on the split factor. The properties whose existance is independent of a specific location in the hierarchy. The relative amount of a component product in the product stream. Product amounts for a specific period. A (possibly timstamped) remark about the product. Unique identifier for the Product Volume Product. WITSML - Report Facility Component Schema. The name of the facility. The name can be qualified by a naming system. This can also define the kind of facility. For facilities whose name is unique within the context of another facility, the name of the parent facility. The name can be qualified by a naming system. This also defines the kind of facility. For facilities whose name is unique within the context of another facility, the name of the parent facility of parent1. The name can be qualified by a naming system. This also defines the kind of facility. A kind of facility where the specific name is not relevant. The Product Flow Port associated with the Product Flow Unit. The Product Flow Unit representing the facility. The Product Flow Network representing the facility. This is only required if the network is not the same as the primary network that represents the Product Flow Model. This must be unique within the context of the Product Flow Model represented by this report. WITSML - Product Flow Sales Set Schema. Defines the aspect being described. A cargo identifier for the product. A cargo batch number. Used if the vessel needs to temporarily disconnect for some reason (e.g., weather). The name of the shipper Defines the destination of the sale. Provides details on the sale. Unique identifier for the node. WITSML - Product Flow Sales Context Schema. A pointer to the business unit which owns the product. Points to the business unit from which the product originated. The owner's share of the product. An account identifier for the sale. A dated event related to the sale. The volume of the fluid, possibly corrected to specific conditions of temperature and pressure. Different volumes may be defined at different conditions but they should all represent the same mass of material. A pointer to a fluid sample analysis result object that is relevant to the sale. This sample may have been acquired previous to or after this period and is used for determining the allocated characteristics. The relative amount of a component product in the product. WITSML - Product Flow Sales Destination Schema. The name of the destination. The type of destination. The country of the destination. WITSML - Product Volume Sale Event Schema. The date of the event. The kind of event. Unique identifier for the node. Defines a type of event related to a sale. //////////////////////////////////////////////////////////////// THESE VALUES WILL BE MOVED TO THE ancilary/enumValues.xsd FILE. //////////////////////////////////////////////////////////////// xxxxxxxxxxxx The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations. Defines a subdivision of a flow related to sales. //////////////////////////////////////////////////////////////// THESE VALUES WILL BE MOVED TO THE ancilary/enumValues.xsd FILE. //////////////////////////////////////////////////////////////// A volume that is the total volume on stock at the beginning of a time period. A volume that is the total volume on stock at the end of a time period. A volume that is the total volume of additions to a stock within a given time period. xxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxx A volume that is a lack of proper proportion or relation between the corresponding input and liftings transactions. xxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxx A value that is adjusted due to a change in the value of a product. xxxxxxxxxxxxxxxxxxxxxxx A volume that is the total volume of a hydrocarbon product that is exported from a stock within a given time period. A gas volume that is the difference between gas volume entering and exiting a shipper's nomination portfolio. This will take into account all differences whatever the time or reason it occurs. A volume that is the volume of a hydrocarbon product lifting up to a (not completed) determined point in time. A closing storage balance that is adjusted according to imbalance at end of period. xxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxx A gas volume that is the unused and availiable quantity of gas within a gas transportation system and/or at one or many gas producting fields that is accessible by the operator responsible for gas transportation for the purposes of alleviating field curtailment. A gas volume that is the quantity of gas which the operator responsible for gas transportation decides must be provided by the gas producing fields in order to make deliveries as requested by gas shippers and provide operating tolerances. xxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxx The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations. Defines a type of destination. //////////////////////////////////////////////////////////////// THESE VALUES WILL BE MOVED TO THE ancilary/enumValues.xsd FILE. //////////////////////////////////////////////////////////////// xxxxxxxxxxxx xxxxxxxxxxxx The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations. A reference to a Flow within the current product volume report. This represents a foreign key from one element to another. A pointer to the flow within the facility. A pointer to the facility that contains the flow. A possibly temperature and pressure corrected volume value. The volume of the product. If the 'status' attribute is absent and the value is not "NaN", the data value can be assumed to be good with no restrictions. A value of "NaN" should be interpreted as null and should be not be given unless a status is also specified to explain why it is null. The amount of heat which would be released by the complete combustion in air of the above volume of product. The temperature to which the volume has been corrected. If not given then the ambient temperature is assumed. If given, then a pressure should also be given. Common standard temperatures are: 0 degC, 15 degC, 60 degF. The pressure to which the volume has been corrected. If not given then the ambient pressure is assumed. If given, then a temperature should also be given. Common standard pressures are: 1 atm and 14.696 psi (which are equivalent). Properties which are common to multiple structures in the productVolume schema. Gas oil ratio. The ratio between the total produced gas volume and the total produced oil volume including oil and gas volumes used on the installation. Gas oil ratio month to date. The gas oil ratio from the beginning of the month to the end of the reporting priod. Water concentration mass basis. The ratio of water produced compared to the mass of total liquids produced. Water concentration volume basis. The ratio of water produced compared to the mass of total liquids produced. The average atmospheric pressure during the reporting period. The volume of the fluid, possibly corrected to specific conditions of temperature and pressure. A positive value for an inlet port indicates flow into the port. A negative value for an inlet port indicates flow out of the port. A positive value for an outlet port indicates flow out of the port. A negative value for an outlet port indicates flow into of the port. This convention is designed such that a positive sign indicates an expected condition based on the intended port direction while a negative sign indicates an anomolous condition. DEPRECATED. Use volumeValue for new work. The uncorrected volume of the product. The sign of the value should conform to the above description of volumeValue. If the 'status' attribute is absent and the value is not "NaN", the data value can be assumed to be good with no restrictions. A value of "NaN" should be interpreted as null and should be not be given unless a status is also specified to explain why it is null. DEPRECATED. Use volumeValue for new work. The volume of the fluid, corrected to standard conditions of temperature and pressure. The sign of the value should conform to the above description of volumeValue. If the 'status' attribute is absent and the value is not "NaN", the data value can be assumed to be good with no restrictions. A value of "NaN" should be interpreted as null and should be not be given unless a status is also specified to explain why it is null. The flow rate of the product. The sign of the value should conform to the above description of volume. If the 'status' attribute is absent and the value is not "NaN", the data value can be assumed to be good with no restrictions. A value of "NaN" should be interpreted as null and should be not be given unless a status is also specified to explain why it is null. Temperature of the port. Specifying the temperature here (as opposed to in Period) implies that the temperature is constant for all periods of the flow. Pressure of the port. Specifying the pressure here (as opposed to in Period) implies that the pressure is constant for all periods of the flow. Absolute minimum pressure before the system will give an alarm. The internal differences between this port and one other port on this unit. The mass of the product. The electrical energy represented by the product. The actual volume divided by the potential volume. Reid vapor pressure of the product. The absolute vapor pressure of volatile crude oil and volatile petroleum liquids, except liquefied petroleum gases, as determined in accordance with American Society for Testing and Materials under the designation ASTM D323-56. True vapor pressure of the product. The equilibrium partial pressure exerted by a petroleum liquid as determined in accordance with standard methods. Basic sediment and water is measured from a liquid sample of the production stream. It includes free water, sediment and emulsion and is measured as a volume percentage of the production stream. The basic sediment and water as measured on the previous reporting period (e.g., day). The density of the fluid, possibly corrected to specific conditions of temperature and pressure. The density of the product. The mass basis flow rate of the product. This is used for things like a sand component. The density of the product after it has been corrected to standard temperature and pressure. The concentration of the product as a volume percentage of the product stream. The molecular weight of the product. The weight fraction of the product. The mole fraction of the product. The molar amount. The specific gravity of the product. The temperature at which the heavier hydrocarbons come out of solution. The temperature at which the first water comes out of solution. Wobbe Index. A number which indicates interchangeability of fuel gasses and is obtained by dividing the heating value of a gas by the square root of its specific gravity. The amount of heat which would be released by the complete combustion in air of a specific quantity of product at standard temperature and pressure. Reid vapor pressure of stabilized crude. Basic sediment and water content in stabilized crude. The density of stabilized crude. The non-contextual content of a WITSML Product Volume object. The name of the facility which is represented by this report. The name can be qualified by a naming system. This also defines the kind of facility. The name and type of a facility whose context is relevant to the represented installation. The type of report. The type of period that is being reported. This value must be consistent with the reporting start and end values. The reporting period. If one value from a pair are given the both values must be given. The beginning date and time that the report represents. The ending date and time that the report represents. The beginning date that the report represents. The ending date that the report represents. The ending date that the report represents. The minimum time index contained within the report. For the purposes of this parameter, a "period" or "facility parameter" without any time data should be assumed to have the time associated with the overall report. The minimum and maximum indexes are server query parameters and will be populated with valid values in a "get" result. See the WITSML API Specification appendix on "Special Handling" of growing objects for a description of the behavior related to this parameter. The maximum time index contained within the report. For the purposes of this parameter, a "period" or "facility parameter" without any time data should be assumed to have the time associated with the overall report. The minimum and maximum indexes are server query parameters and will be populated with valid values in a "get" result. See the WITSML API Specification appendix on "Special Handling" of growing objects for a description of the behavior related to this parameter. The definition of the "current time" index for this report. The current time index is a server query parameter which requests the selection of a single node from a recurring "period" set (e.g., the data related to one point in a time series). For the purposes of this parameter, a "period" without any time data should be assumed to have the time associated with the overall report. See the WITSML API Specification appendix on "Special Handling" of growing objects for a description of the behavior related to this parameter. The calculation method for for "filling in" values in an indexed set. If not given, the default is that no calculations are performed to create data where none exists within an existing set. This is not to be construed as to prevent concepts such as simulation and forcasting from being applied in order to create a new set. This is a server query parameter. The operator of the facilities in the report. The tile of the report if different from the name of the report. The geographic context of the report. The date that the report was issued. The person or company that issued the report. This may contain the role of the person or company within the context of the report. The date that the report was approved. The person or company that approved the report. This may contain the role of the person or company within the context of the report. The Product Flow Model for the overall installation. This model represents all Product Flow Units referenced within this report. DEPRECATED. The elements which reference this have been DEPRECATED. Defines the standard temperature and pressure to which all standard volumes in this report have been corrected. This applies to all elements whose name is suffixed by Std and documented to be corrected to conditions of standard temperature and pressure. A business unit and related account or ownership share information. A facility for which product information is being reported. The WITSML API mandated plural root element which allows multiple singular objects to be sent. The plural name is formed by adding an "s" to the singular name. Information about the XML message instance. Information about a single productVolume. Data object schema version. The fourth level must match the version of the schema constraints (enumerations and XML loader files) that are assumed by the document instance. Human recognizable context for the Product Volume Report. The non-contextual elements for general Product Volume information. A container element that contains elements that are common to all data objects. A container element that can contain custom or user defined data elements. Unique identifier for the Product Volume Report. This type disallows an "empty" boolean value. This type should not be used directly except to derive another type. All boolean types should be derived from this type rather than using xsd:boolen. This type disallows an "empty" dateTime value. This type should not be used directly except to derive another type. All dateTime types should be derived from this type rather than using xsd:dateTime. This type disallows an "empty" date value. This type should not be used directly except to derive another type. All dateTime types should be derived from this type rather than using xsd:dateTime. This type disallows an "empty" double value. This type should not be used directly except to derive another type. This type disallows an "empty" short value. This type should not be used directly except to derive another type. This type disallows an "empty" int value. This type should not be used directly except to derive another type. The intended abstract supertype of all strings. This abstract type allows the control over whitespace for all strings to be defined at a high level. This type should not be used directly except to derive another type. Replace tab, line feed and carriage return with a space, collapse contiguous sequences of spaces to a single space and then remove leading and trailing spaces. The empty string is not allowed. This constraint conbined with the whiteSpace collapse constraint means that a blank value is not allowed. The intended abstract supertype of all quantities that have a value with a unit of measure. The unit of measure is in the uom attribute of the subtypes. This type allows all quantities to be profiled to be a 'float' instead of a 'double'. This defines the maximum acceptable length of a string that can be stored in a data base. This value should be the smallest "maximum size of a variable length character type" in commonly used DBMSs. This is the maximum size of a VARCHAR2 in Oracle 8. The intended abstract supertype of all singular data objects. A positive integer (one based count or index) with a maximum value of 32767 (2-bytes). This value cannot be negative or zero. The intended abstract supertype of all user assigned human recognizable contextual name types. There should be no assumption that (interoperable) semantic information will be extracted from the name by a third party. This type of value is generally not guaranteed to be unique and is not a candidate to be replaced by an enumeration. The intended abstract supertype of all locally unique identifiers. The value is not intended to convey any semantic content (e.g., it may be computer generated). The value is only required to be unique within a context in a document (e.g., defined via key and keyref). There is no guarantee that the same data in multiple documents will utilize the same uid value unless enforced by the source of the document (e.g., a document server). Spaces are not allowed. The intended abstract supertype of all comments or remarks intended for human consumption. There should be no assumption that semantics can be extracted from the field by a computer. Neither should there be an assumption that any two humans will interpret the information in the same way (i.e., it may not be interoperable). The intended abstract supertype of all enumerated "types". This abstract type allows the maximum length of a type enumeration to be centrally defined. This type should not be used directly except to derive another type. It should also be used for uncontrolled strings which are candidates to become enumerations at a future date. The intended abstract supertype of all "units of measure". This abstract type allows the maximum length of a UOM enumeration to be centrally defined. This type is abstract in the sense that it should not be used directly except to derive another type. Kind of Address. The list of standard values is contained in the PRODML enumValues.xml file. The mailing address of a business associate or facility. The physical address - location - of a business associate or facility. Both the mailing address and the physical address. The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations. What kind of email (or phone) is this? Is it a work phone? Or personal? Or is a permanent one? The list of standard values is contained in the PRODML enumValues.xml file. The phone number or email address is personal, and can probably be received at the business associates home. The phone number or email is a work number, which is subject to change if the business associate changes jobs. The phone number or email is permanent, which will still be valid if the person changes home or work locations. The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations. Defines the calculation methods available for "filling in" values in an indexed set. The list of standard values is contained in the PRODML enumValues.xml file. No calculations are performed to create data where none exists at index points within an existing set of data. The value is held constant until the next index point. The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations. The preferred method of contacting a business associate. The list of standard values is contained in the PRODML enumValues.xml file. Postal mail at the business address. Business fax. Business email. Postal mail at the business address. Business voice phone. Mobile phone. Pager. Personal fax. Personal email. Postal mail at the personal address. Personal voice phone. The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations. The meaning of the endpoint for min/max query parameters on "growing objects". The list of standard values is contained in the PRODML enumValues.xml file. The endpoint of the range is inclusive of the specified range value. hat is, a node index value which matches the specified range value is considered to be within the range. The endpoint of the range is exclusive of the specified range value. That is, a node index value which matches the specified range value is considered to be outside the range. The endpoint of the range may be extended to the first encountered value if an exact value match is not found. That is, if a node index value does not match the specified range value then the next smaller value (on minimum end) or larger value (on maximum end) in the index series should be used as the endpoint. Basically, this concept is designed to support interpolation across an undefined point. The endpoint of the range may be extended to the first encountered value if the interval is overlapped with the index interval. That is, if a node index value does not match the specified range value then the next smaller value (on minimum end) or larger value (on maximum end) in the index series should be used as the endpoint. This concept is designed to select ALL nodes whose index interval overlap with the query range. The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations. Defines kinds of facility parameters. The list of standard values is contained in the PRODML enumValues.xml file. Indicates the availablity of the facility. This should be implemented as a string value. A value of "true" indicates that it is available for use. That is, it may be currently shut-down but it can be restarted. A value of "false" indicates that the faility is not available to be used. That is, it cannot be restarted at this time. Defines the unoccupied volume of a tank. Zero indicates that the tank is full. This should be implemented as a volume measure. Indicates the status of a block valve. This should be implemented as a string value. A value of "open" indicates that it is open. A value of "closed" indicates that it is closed. The ammount to time the facility was available during the specified period. This should be implemented as an time measure. The reciprocating speed of a device (e.g., motor, compressor) This should be implemented as an anglePerTime measure. Defines the relative level of a tank. Zero indicates empty and 100% indicates full. This should be implemented as a lengthPerLength measure. Indicates the status of a valve. This should be implemented as an areaPerAreaMeasure. A value of 100 % indicates that it is open. A value of zero indicates that it is closed. Indicates the open area of a valve. This should be implemented as an areaMeasure. A value of zero indicates that it is closed. Indicates the amount of time the facility has been unavailable during the specified period. May be related to a particular point in time which would represent the start of the downtime. This should be implemented as an time measure. Defines the relative order in which a facility should be shutdown. This should be implemented as an integer count. Facilities with smaller values should be shut down first. Only facility parameters with the same version time and same version source should be evaluated together for the purposes of this order. The vertical height of the specified product in a tank. This should be implemented as a length measure. The volume of the specified product in a tank. This should be implemented as a volume measure. The volume of the specified product in a tank, corrected to standard conditions of temperature and pressure. This should be implemented as a volume measure. This commonly called the "well type". It characterizes the well based on its mode of lifting the product. This should be implemented as a string value. The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations. Defines qualifiers for type of flow. The list of standard values is contained in the PRODML enumValues.xml file. Indicates product characteristics that were allocated back to a well as opposed to being measured at the well. A performance requirement as determined by a budget. Indicates product characteristics that were determined by an allowable or other performance limit. This includes allowables which are usually established by a regulatory agency for a product. A forecast future value. Indicates product volumes that were derived directly from one or more other flows. An estimated or calculated performance, possibly based on comparable product flow units, but not based on reservoir simulations for the particular product flow unit. Indicates product volumes that were actually measured at the port. Normally a 1 day forcast promise to a buyer. The estimated maximum which is possible. A measured value that has been processed. This is different from derived because it is fundamentally a variation of the original value. An amount, set by some authority, which may or may not be based on technical criteria. A value which is believed to be very desirable if it can be achieved. This a recommendation that something be changed in order to achieve this value. An estimated performance based on a simulation that includes the particular product flow unit. The desired value. What you are aiming for. The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations. xxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxx A value that is the difference between e.g. a target value and a metered value. A value that is generated by measurement and calculation and has an impact on company revenue and government taxation. xxxxxxxxxxxxxxxxxxxxxxxxxxx Defines a specialization of a flow qualifier. The list of standard values is contained in the PRODML enumValues.xml file. Indicates a pseudo decline-curve of flow rate over time. This presumes that the flow will not be interrupted over that time period. Specialization of "forecast". A value is derived by taking the difference between two other values. Specialization of "derived". The value was measured for fiscal purposes. Specialization of "measured". The value supplied is the only value permitted. Specialization of "constraint". The value supplied is the minimum permitted. Specialization of "constraint". The value supplied is the maximum permitted. Specialization of "constraint". The value is a raw measurement. Specialization of "measured". The value has changed due to a recalibration of the sensor. Specialization of "measured". A standard forecast as opposed to a decline curve. Specialization of "forecast". The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations. These values represent the state of a WITSML object. Actual data measured or entered at the well site. Model data used for "what if" calculations. A planned object. That is, one which is expected to be executed in the future. The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations. Kind of measure (quantity with a unit of measure). The list of standard values is contained in the PRODML enumValues.xml file. The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations. One method of characterizing a phone number. The list of standard values is contained in the PRODML enumValues.xml file. The telephone number is a conventional number which is used for voice contact. The telephone number is exclusively used for receiving faxes. The telephone number is a mobile telephone, such as a cell phone. The telephone at this number is capable of voice communication and of receiving faxes. The telephone is connected directly to voice mail. A voice phone may lead a caller to voice mail. However this choice qualifies the phone type as being only voice mail. The telephone is intended only for pages. The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations. Defines the types of Product Flow Ports. The list of standard values is contained in the PRODML enumValues.xml file. An inlet port by which fluid normally flows into the Product Flow Unit. An inlet port by which fluid normally flows out of Product Flow Unit. The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations. A kind of facility (usage of equipment or material). The list of standard values is contained in the PRODML enumValues.xml file. A single block valve. A single bottomhole. A single choke. A single cluster. A single completion. A single compressor. A single lift gas controller. DEPRECATED: use "controller" instead. A single county. A single country. A single field. A single flowline. A single flow meter. A single lease. A single manifold. A single platform. A single pressure meter. Note that this represents the device and not the sensor itself. A single production processing facility. A single regulating valve. A single reservoir. A single separator. A single sleeve valve. This is a type of tubing valve which has a sliding sleeve to cover holes in the tubing. You cover all of the holes in order to close the valve. For configurations oriented toward production, the inlet is on the casing side and the outlet is on the tubing side. For injection, the reverse would be true. A single state or province. A single tank. A single temperature meter. Note that this represents the device and not the sensor itself. A single template. A single trunkline. A single tubing head within a wellhead. A single named group of wells. A single well, possibly with many wellbores (sidetracks). A single wellbore (sidetrack) within a well. A single wellhead for one well. See also "tubing head". A single zone. The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations. A commercial entity is an organisational construct through which the a group of organisations or facilities are grouped as if it were a single composite. xxxxxxxxxxxxxxxxxxxxxxx A ground that is an area above an oilfield. An area concept that is a grouping of two or more selcted petroleum fields for commercial reasons or other purposes. An area concept that is an area that forms part of a petroleum field. xxxxxxxxxxxxxxxxxxxxxxx A physical object that is an appliance involved in the extraction, production, transportation or storage of oil or gas. A regulatory agreement that gives the licensees excluding rights to investigate, explore and recover petroleum deposits within the geographical area and timeperiode stated in the agreement. A fluid conductor that consists of pipe, possibly also including pumps, valves, and control devices, intended for conveying liquids, gases, or finely divided solids. A system for the storage of gaseous, liquid and solid products. A physical object that is an industrial facility for the storage of oil and/or petrochemical products and from which these products are usually transported to end users or further storage facilities. Defines the types of flows for volume reports. The list of standard values is contained in the PRODML enumValues.xml file. Consumed (all methods) by the facility. Consummed to restart power facilities as a result of an overall power outage. Consummed by compressors. Consumed by devices other than compressors. Released into the atmosphere as a by-product of consumption. Burned in a flare. A fluid stream that has one or more flares as the ultimate target. Burned in a high pressure flare. Burned in a low pressure flare. Consumed by processing equipment. Released into the atmosphere. Leaving the installation for commercialized purposes. Requested to leave the installation for commercialized purposes. Planned to leave the installation for commercialized purposes. Difference between what was requested and what was delivered. Injected into a producing well to reduce the hydrostataic pressure of the fluid column. The resulting reduction in bottom hole pressure allows the reservoir liquids to flow. Entering the facility for commercialized purposes. Inject into a well. Stock at a facility. For a period that represents an event, the amount would represent the current amount of inventory. For other periods, the amount would represent the addition (positive value) or drawdown (negative value) over that period. For an individual storage facility (e.g., a tank), the amounts would represent that tank. For an overall facility, the amounts would represent all tanks. Dropped overboard into the sea. Exploited from a reservoir. This is independent of any disposition. The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations. An accounting of all of the fluids into and out of Stock (i.e., Inventory) which includes all storage facilities at a site including fluid within a pipeline. A fluid stream that contains waste fluids for disposal. A fluid stream that is sold and transported to a buyer by pipeline. A fluid stream that is directed to one or more storage locations. A time period for a report. The list of standard values is contained in the PRODML enumValues.xml file. A period of one day. If the report does not represent one day then this represents the 24 hour period ending at the end of the report period. A period of one week. If the report does not represent one week then this represents the 7 times 24 hour period ending at the end of the report period. A period of one calendar month. A period of one gregorian year. A period from the beginning of the year to the end of the report period. A period from the beginning of the calendar month to the end of the report period. The average per day over the period from the beginning of the year to the end of the report period The average per day over the period from the beginning of the month to the end of the report period A period with no beginning that ends at the end of the report period. A period coinciding with the report period. A point in time coinciding with the start of report period. A point in time coinciding with the end of report period. The previous reporting period. For example, if the report period represents a day then the previous period represents the previous day. A point in time coinciding with midnight during the report period. This can be ambiguous if the report begins and ends at midnight - use report start/end instead. This cannot be used for a reporting period that is greater than 24 hours. A point in time coinciding with noon during the report period. This can be ambiguous if the report begins and ends at noon - use report start/end instead. This cannot be used for a reporting period that is greater than 24 hours. A point in time coinciding with 6 am during the report period. This can be ambiguous if the report begins and ends at 6 am - use report start/end instead. This cannot be used for a reporting period that is greater than 24 hours. A period in time that is all space of time within a day (24 hour period) starting at 06:00 AM and ending 06:00 AM next day. A period in time that is all space of time within a whole given month starting at 06:00 AM the first day and ending at 06:00 AM the first day of next month. A period in time that is all time within a period starting at 06:00 AM October 1st and ending at same date and time the following year. A period in time that is all space of time within a period starting at 06:00 AM October 1st ending at 06:00 AM at a given date. A kind of product in a fluid system. The list of standard values is contained in the PRODML enumValues.xml file. A product composed of the component with the specified number of carbon atoms plus all heavier components. A product composed of the component with the specified number of carbon atoms plus all heavier components. A product composed of the component with the specified number of carbon atoms plus all heavier components. A product composed of the component with the specified number of carbon atoms plus all heavier components. A product composed of the component with the specified number of carbon atoms plus all heavier components. A product composed of the component with the specified number of carbon atoms plus all heavier components. A product composed of the component with the specified number of carbon atoms plus all heavier components. A product composed of the component with the specified number of carbon atoms plus all heavier components. A product composed of the component with the specified number of carbon atoms plus all heavier components. A product composed of the component with the specified number of carbon atoms plus all lighter components. A product composed of the component with the specified number of carbon atoms plus all lighter components. A product composed of the component with the specified number of carbon atoms plus all lighter components. A product composed of the component with the specified number of carbon atoms plus all lighter components. A product composed of the component with the specified number of carbon atoms plus all lighter components. A product composed of the component with the specified number of carbon atoms plus all lighter components. A product composed of the component with the specified number of carbon atoms plus all lighter components. A product composed of the component with the specified number of carbon atoms plus all lighter components. A product composed of the component with the specified number of carbon atoms plus all lighter components. An undifferentiated liquid fluid phase in which the dominant continuous materials are liquid hydrocarbons. This phase is often called the "oil phase". An undifferentiated liquid fluid phase in which the dominant continuous material is liquid water. This phase is often called the "water phase". An undifferentiated fluid phase that is distinctly gaseous. This phase is often called the "gas phase". An undifferentiated fluid phase that is distinctly liquid. This includes water. Carbon monoxode in a gaseous state. Carbon dioxide in a gaseous state. A chemical of some type. Mixture of light and heavier hydrocarbons in a liguid state. Drill cuttings. Diesel fuel. Electrical power. Ethane as a component in another fluid. Gas mixture of hydrocarbons. Gas mixture of light and heavier hydrocarbons than a lean gas. Gas as a component in oil. xxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxx I-butane as a component in another fluid. Mixture of ethane, propane and butane with small quantities of heaver hydrocarbons. Partially liquid at atmospheric pressure. xxxxxxxxxxxxxxxx N-butane as a component in another fluid. Nitrogen oxides in a gaseous state Natural gas liquid as a component in gas. A combination of oil (including water) and gas. This is generally used when refering to 'all production'. Crude oil including water. A mixture of hydrocargons, that existed in liquid phase in underground reservoirs and remains liquid at atmospheric pressure after passing through separating facilities. Oil with water removed. Oil as a component in water. xxxxxxxxxxxxxxxx xxxxxxxxxxxxxxx Propane as a component in another fluid. Sand as a component in another fluid. Water in a liquid state. Produced water that has not been processed. Produced water that has been processed to remove hydrocarbons. The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations. Light hydrocarbon fractions produced with natural gas, which condense into liquid at normal temperatures and pressures associated with surface production equipment. Hydrocatbon condensate containing only the heavier carbon fractions C5 to C10+. A crude oil that has been stabilized by separating out dissolved gas. A compound where the main component is ethane. A natural gas that occurs in the absence of condensate or liquid hydrocarbons, or gas that has had condensable hydrocarbons removed, mainly consisting of methane gas. A natural gas that contains less methane (typically less than 85% methane) and more ethane and other more complex hydrocarbons like propane, butane and naphtha. xxxxxxxxxxxxxxxxxxxxxx A compound where the main component is isobutane. A liquid compound that is natural gas compressed and supercooled to -167 deg C (-269 deg F) into a liquid to reduce its volume to 1/635th for storage and transportation. Liquefied natural gas has a calorific value of 22,300 Btu/lb. It consists of about 9 xxxxxxxxxxxxxxxxxxxxxx A liquid compound that is predominantly butane and propane separated from natural gasoline or natural gas and sold as fuel - commonly known as bottled gas, tank gas or LP-gas. xxxxxxxxxxxxxxxxxxxxxx A compound where the main components are butane and isobutane. A compound where the main component is butane. A compound where the main component is pentane. A crude oil that that includes all petroleum liquids and sediments and water, excluding free water. A compound where the main component is propane. xxxxxxxxxxxxxxxxxxxxxx An aggregate that is a volatile and inflammable product of crude oil refining with a boiling range 140 - 210 deg. Celsius consisting of C5+ to C10 components (pentanes and hexanes). A compound where the main component is isopentane. Combinations of standard temperature and pressure. The list of standard values is contained in the PRODML enumValues.xml file. A temperature of zero degrees Centigrade and a pressure of one atmosphere. A temperature of sixty degrees Centigrade and a pressure of one atmosphere. A temperature of fifteen degrees Fahrenheit and a pressure of one atmosphere. The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations. An indicator of the quality of a value. This is designed for a SCADA or OPC style of value stasus. The token in parentheses are OPC's status string for the condition. The list of standard values is contained in the PRODML enumValues.xml file. The calibration status of the sensor is unknown. (Out of Calibration) The value is range limited, that is, at or near the end of range of the sensor. The value might be clamped. (Low Limited, High Limited) The value is just plain questionable. (Sub-Normal, Non-specific) The unit to which the sensor is attached is not running. (Device Failure) The field sensor itself is not working due to hardware failure or misconfiguration. (Sensor Failure) The communication to the field sensor is not working. That is, communcation cannot be established or maintained. (Comm Failure) Communication to the field sensor has timed out, that is, a connection exists, but a request for a field sensor data value has failed. (Last Known Value) The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations. A timestamp value used for min/max query parameters related to "growing objects". The meaning of the endpoint of an interval can be modified by the endpoint attribute. The default is "inclusive". An email address with an attribute, used to "qualify" an email as personal, work, or permanent. Identifies a facility. The kind of facility. The naming system within which the name is unique. For example, API or NPD. If the facility is defined and instantiated within the context of a WITSML server, this is a pointer to the uid value of that object instance. A phone number with two attributes, used to "type" and "qualify" a phone number. The type would carry information such as fax, modem, voice, and the qualifier would carry information such as home or office. The kind of phone such as voice or fax. Indicates whether the number is personal, business or both. The phone number extension. Values of "true" (or "1") and "false" (or "0"). A julian date. A month of a year. A date with the time of day and an optional time zone. While the time zone is optional, it is strongly advised that the zone always be specified in each date time value. A floating point value between zero (inclusive) and one (inclusive) This value can be zero but cannot be negative. This value can not be greater than one. A unitless quantity. This should not be confused with a dimensionless measure. A reference to a name in another node of the xml hierachy. This value represents a foreign key from one element to another. A reference to the unique identifier (uid attribute) in the node referenced by the name value. This attribute is required within the context of a WITSML server. A user assigned human recognizable contextual name of something. There should be no assumption that (interoperable) semantic information will be extracted from the name by a third party. This type of value is generally not guaranteed to be unique and is not a candidate to be replaced by an enumeration. A comment or remark intended for human consumption. There should be no assumption that semantics can be extracted from this field by a computer. Neither should there be an assumption that any two humans will interpret the information in the same way (i.e., it may not be interoperable). A textual description of something. A community assigned human recognizable name. This type of value is intended to be unique and is generally a candidate to be constrained to an enumerated list. A unit of measure acronym from the POSC unit of measure file. A locally unique identifier. The value is not intended to convey any semantic content (e.g., it may be computer generated). The value is only required to be unique within a context in a document (e.g., defined via key and keyref). There is no guarantee that the same data in multiple documents will utilize the same uid value unless enforced by the source of the document (e.g., a document server). A reference to the unique identifier of another element. This value represents a foreign key from one element to another. The value should match the value of an attribute of type uidString. The version of the schema. The first three levels are fixed. The fourth level can vary to represent the constraints defined in enumerations and XML loader files. The name of something within a naming system. The naming system within the name is (hopefully) unique. A measure which may have a quality status. The measure class (e.g., length) must be defined within the context of the usage of this type (e.g., in another element). This should not be used if the measure class will always be the same thing. If the 'status' attribute is absent and the value is not "NaN", the data value can be assumed to be good with no restrictions. An indicator of the quality of the value. The kind of the value component. For example, "X" in a tuple of X and Y. The unit of measure for the value. This value must conform to the values allowed by the measure class. An integer which may have a quality status. If the 'status' attribute is absent and the value is not "NaN", the data value can be assumed to be good with no restrictions. An indicator of the quality of the value. A kind which may have a quality status. If the 'status' attribute is absent and the value is not "NaN", the data value can be assumed to be good with no restrictions. An indicator of the quality of the value. A volume flow rate which may have a quality status. If the 'status' attribute is absent and the value is not "NaN", the data value can be assumed to be good with no restrictions. An indicator of the quality of the value. A volume flow rate which may have a quality status.. If the 'status' attribute is absent and the value is not "NaN", the data value can be assumed to be good with no restrictions. An indicator of the quality of the value. A non-negative integer (zero based count or index) with a maximum value of 32767 (2-bytes). For items that represent "number of" something or a "sequential" count or index. This value can be zero but cannot be negative. A positive integer (one based count or index). This value cannot be negative or zero. A mass per mass measure that is constrained to a unit of percent. The number of moles as a proportion of the total number of moles measure that is constrained to a unit of percent. A volume per volume measure that is constrained to a unit of percent.