ActivityCode Activity codes. WITSML abandonment abandonment abandonment -- log plugs A specialization of 'abandonment'. abandonment -- run plugs A specialization of 'abandonment'. abandonment -- wait on cement A specialization of 'abandonment'. casing, cement casing and cement casing, cement -- circulate, cement A specialization of 'casing, cement': circulate and cement casing, cement -- other A specialization of 'casing, cement'. casing, cement -- rig up, run casing A specialization of 'casing, cement': rig up and run casing casing, cement -- rig up, run liner A specialization of 'casing, cement': rig up and run liner casing, cement -- wait on cement A specialization of 'casing, cement'. completion operations After reaching total depth, any operations for completing the well and bringing it on production - no further detail is known. completion operations -- rig up Rig up completion equipment. completion operations -- tear down Tear down completion equipment. completion operations -- testing Pre-production flow testing in the well completion phase. completion operations -- running liner Running the production liner. completion operations -- gravel packing Completion operation for producing zones. completion operations -- logging Production logging tool runs. cond mud, circulate condition mud and circulate cond mud, circulate -- boulder or gravel A specialization of 'cond mud, circulate'. cond mud, circulate -- casing A specialization of 'cond mud, circulate'. cond mud, circulate -- cementing A specialization of 'cond mud, circulate'. cond mud, circulate -- circulate samples A specialization of 'cond mud, circulate'. cond mud, circulate -- coring A specialization of 'cond mud, circulate'. cond mud, circulate -- drilling A specialization of 'cond mud, circulate'. cond mud, circulate -- fishing A specialization of 'cond mud, circulate'. cond mud, circulate -- gumbo attack A specialization of 'cond mud, circulate'. cond mud, circulate -- logging A specialization of 'cond mud, circulate'. cond mud, circulate -- lost circulation A specialization of 'cond mud, circulate'. cond mud, circulate -- well control A specialization of 'cond mud, circulate'. coring coring coring -- conventional A specialization of 'coring'. coring -- flow check A specialization of 'coring'. coring -- laydown barrel A specialization of 'coring'. coring -- oriented A specialization of 'coring'. coring -- plastic sleeve A specialization of 'coring'. coring -- rig up core barrel A specialization of 'coring'. coring -- sponge A specialization of 'coring'. cut, slip drilling line cut and slip drilling line deviation survey deviation survey deviation survey -- dir multi-shot A specialization of 'deviation survey': directional multi-shot deviation survey -- dir single shot A specialization of 'deviation survey': directional single shot deviation survey -- drift A specialization of 'deviation survey'. deviation survey -- gyro A specialization of 'deviation survey'. deviation survey -- MWD A specialization of 'deviation survey'. dir work directional work dir work -- horizontal drilling A specialization of 'dir work'. dir work -- motor drilling A specialization of 'dir work'. dir work -- orient A specialization of 'dir work'. dir work -- rotary drilling A specialization of 'dir work'. dir work -- slant drilling A specialization of 'dir work'. DST drill stem test DST -- cased hole A specialization of 'DST'. DST -- lay down tools A specialization of 'DST'. DST -- open hole A specialization of 'DST'. DST -- open hole closed chamber A specialization of 'DST'. DST -- rig up tools A specialization of 'DST'. drilling drilling drilling -- casing A specialization of 'drilling'. drilling -- connection A specialization of 'drilling'. drilling -- drill cement, float equip A specialization of 'drilling': drill out cement and/or float equipment drilling -- flow check A specialization of 'drilling'. drilling -- hole opening A specialization of 'drilling'. drilling -- new hole A specialization of 'drilling'. drilling -- sidetracking A specialization of 'drilling'. drilling -- under-reaming A specialization of 'drilling'. fishing fishing fishing -- BHA A specialization of 'fishing'. fishing -- casing A specialization of 'fishing'. fishing -- cones >A specialization of 'fishing'. fishing -- other A specialization of 'fishing'. fishing -- stuck pipe A specialization of 'fishing'. fishing -- wireline tools A specialization of 'fishing'. HSE Health, Safety and Environmental HSE -- hold drill A specialization of 'HSE'. HSE -- incident A specialization of 'HSE'. HSE -- safety meeting A specialization of 'HSE'. mill mill mill -- cut casing or tubing A specialization of 'mill'. mill -- milling A specialization of 'mill'. miscellaneous miscellaneous nipple up BOP nipple up blowout preventer nipple up BOP -- diverter A specialization of 'nipple up BOP'. nipple up BOP -- manifold A specialization of 'nipple up BOP'. nipple up BOP -- other A specialization of 'nipple up BOP'. nipple up BOP -- PVT system A specialization of 'nipple up BOP'. nipple up BOP -- stack A specialization of 'nipple up BOP'. plug back plug back plug back -- abandonment A specialization of 'plug back'. plug back -- kick off plug A specialization of 'plug back'. plug back -- lost circulation A specialization of 'plug back'. plug back -- wait on cement A specialization of 'plug back'. plug back -- well control A specialization of 'plug back'. pressure test pressure test pressure test -- BOP manifold A specialization of 'pressure test'. pressure test -- BOP stack A specialization of 'pressure test'. pressure test -- form integrity test A specialization of 'pressure test': formation integrity test pressure test -- form leak off test A specialization of 'pressure test': formation leak off test pressure test -- packer A specialization of 'pressure test'. pressure test -- PIT A specialization of 'pressure test'. reaming reaming reaming -- back reaming A specialization of 'reaming'. reaming -- coring A specialization of 'reaming'. reaming -- drill A specialization of 'reaming'. reaming -- logging A specialization of 'reaming'. reaming -- under-reaming A specialization of 'reaming'. rig move rig move rig move -- anchor handling A specialization of 'rig move'. rig move -- inter-pad move A specialization of 'rig move'. rig move -- inter-well move A specialization of 'rig move'. rig move -- jack up or down A specialization of 'rig move'. rig move -- other A specialization of 'rig move'. rig move -- position rig A specialization of 'rig move'. rig move -- skid rig A specialization of 'rig move'. rig release rig release rig release -- cut casing A specialization of 'rig release'. rig release -- install capping assembly A specialization of 'rig release'. rig release -- MOB or DE-MOB A specialization of 'rig release'. rig repairs rig repairs rig repairs -- drawworks A specialization of 'rig repairs'. rig repairs -- electrical A specialization of 'rig repairs'. rig repairs -- mud system A specialization of 'rig repairs'. rig repairs -- other A specialization of 'rig repairs'. rig repairs -- rotary A specialization of 'rig repairs'. rig repairs -- subsea equipment A specialization of 'rig repairs'. rig repairs -- well control equipment A specialization of 'rig repairs'. rig service rig service rig service -- lubricate rig A specialization of 'rig service'. rig service -- test equipment A specialization of 'rig service'. rig up or tear down rig up or tear down rig up or tear down -- rig up A specialization of 'rig up or tear down'. rig up or tear down -- site work A specialization of 'rig up or tear down'. rig up or tear down -- tear down A specialization of 'rig up or tear down'.v run or pull riser run or pull riser run or pull riser -- other A specialization of 'run or pull riser'. run or pull riser -- run or pull riser A specialization of 'run or pull riser'. squeeze cement squeeze cement squeeze cement -- casing repair A specialization of 'squeeze cement'. squeeze cement -- casing shoe A specialization of 'squeeze cement'. squeeze cement -- parted casing A specialization of 'squeeze cement'. squeeze cement -- perforations DST A specialization of 'squeeze cement'. stuck pipe stuck pipe surface string handling surface string handling testing general Testing of any nature, if more detail is not known. testing general -- equipment A specialization of 'testing general'. Testing of surface equipment, or downhole equipment tested at surface. testing general -- flow A specialization of 'testing general'. Well Flow testing, in the pre-production phase of the well. tripping tripping tripping -- back-reaming A specialization of 'tripping'. tripping -- flow check A specialization of 'tripping'. tripping -- short trip in A specialization of 'tripping'. tripping -- short trip out A specialization of 'tripping'. tripping -- trip in (from surface) A specialization of 'tripping'. tripping -- trip out (to surface) A specialization of 'tripping'. wait wait wait -- daylight A specialization of 'wait'. wait -- environmental or regulatory A specialization of 'wait'. wait -- equipment A specialization of 'wait'. wait -- holiday A specialization of 'wait'. wait -- ice A specialization of 'wait'. wait -- on orders A specialization of 'wait'. wait -- operator A specialization of 'wait'. wait -- other A specialization of 'wait'. wait -- partners A specialization of 'wait'. wait -- service company A specialization of 'wait'. wait -- weather A specialization of 'wait'. well control well control well control -- mix A specialization of 'well control'. well control -- shut in A specialization of 'well control'. well control -- strip A specialization of 'well control'. well control -- well kill A specialization of 'well control'. well srvc well services well srvc -- casing repair A specialization of 'well srvc'. well srvc -- clean well to compl fluid cleanout well to completion fluid well srvc -- coiled tubing work A specialization of 'well srvc'. well srvc -- gravel pack A specialization of 'well srvc'. well srvc -- install or test xmas tree A specialization of 'well srvc'. well srvc -- kill well A specialization of 'well srvc'. well srvc -- land, set, test completion A specialization of 'well srvc': land, set and test completion well srvc -- perforate A specialization of 'well srvc'. well srvc -- pull completion A specialization of 'well srvc'. well srvc -- pull suspension plugs A specialization of 'well srvc'. well srvc -- run completion A specialization of 'well srvc'. well srvc -- run screens A specialization of 'well srvc'. well srvc -- sand control A specialization of 'well srvc'. well srvc -- stimulation A specialization of 'well srvc'. well srvc -- subsea work A specialization of 'well srvc'. well srvc -- surface line work A specialization of 'well srvc'. well srvc -- suspend well or pull BOPs A specialization of 'well srvc'. well srvc -- test well A specialization of 'well srvc'. well srvc -- wash A specialization of 'well srvc'. well srvc -- wireline work A specialization of 'well srvc'. well srvc -- work tubulars A specialization of 'well srvc'. well srvc -- workstring run A specialization of 'well srvc'. wireline logs wireline logs wireline logs -- abandonment A specialization of 'wireline logs'. wireline logs -- evaluation A specialization of 'wireline logs'. wireline logs -- form tester A specialization of 'wireline logs': formation tester wireline logs -- other A specialization of 'wireline logs'. wireline logs -- side wall cores A specialization of 'wireline logs'. wireline logs -- velocity A specialization of 'wireline logs'. LithologyType These values represent the lithological terminology used in descriptions of rock cuttings in mud logs. WITSML andesite Intermediate porphyritic volcanic rock consisting of plagioclase, pyroxene, hornblende and bitotite. anhydrite The mineral form of anhydrous calcium sulfate, commonly massive in evaporite beds. arkose An indurated arenaceous deposit consisting chiefly of quartz and feldspar (>25%). basalt Volcanic rock consisting essentially of plagioclase feldspar and pyroxene. breccia A lithified rock rich in angular fragments of size greater than 2mm. calcarenite A limestone more than half of which consists of cemented sand-size grains of calcium carbonate: a consolidated calcareous sand. calcilutite A limestone more than half of which consists of detrital calcite particles of silt and/or clay size: a consolidated calcareous mud. calcisiltite A limestone more than half of which consists of detrital calcite particles of silt size: a consolidated calcareous silt. chalk A fine-grained limestone composed largely of coccolith fragments. chert Siliceous sedimentary rock containing finely crystalline snd fibrous quartz. clay Unconsolidated deposit of very fine particles of size generally less than 1/256mm and composed of clay minerals. claystone An indurated clay, lacking the fissility of shale. coal A combustible organic sedimentary rock with less than 40% of mineral matter (based on dry material) composed of polymers of cyclic hydrocarbons. conglomerate An indurated sedimentary rock containing an essential quantity of rounded rock fragments larger than 2mm, and normally having a matrix of sand. diabase Igneous rock of grain size intermediate between basalt and gabbro composed of plagioclase feldspar, pyroxene and opaque minerals. Synonym: dolerite. diorite Plutonic igneous rock consisting of plagioclase feldspar, commonly with hornblende and biotite. dolomite Sedimentary rock containing more than 90% dolomite (mineral) and less than 10% calcite. dolomite, calcareous A dolomite rock containing more than 10% calcite. extrusive rock (volcanic) Igneous rocks formed by solidification of material erupted sub-aerially or sub-aqueously onto the earth's surface, as either lava flows or pyroclastic material. feldspar The family of aluminium silicates of sodium, potassium, calcium and other metals which comprise over 60% of the earth's crust, are the most abundant mineral group, and occur in all types of rocks. gabbro Coarse grained plutonic igneous rock composed essentially of calcic plagioclase feldspar, pyroxenes and iron oxide. glauconite A mineral composed of ferrous potassium silicates related to mica which commonly imparts a green color to its sedimentary host rock. gneiss A metamorphic rock, commonly foliated and crystalline, whose mineral content can range from quartz and feldspars to amphiboles and pyroxenes. granite Coarse grained plutonic rock typically containing free quartz, alkali feldspar and biotite mica. gravel An unconsolidated deposit of coarse clastics. The diameters on the Wenworth scale are generally greater than 2mm. greenstones A field term for any dark fine grained altered or metamorphosed basic igneous rock. greywacke A dark grey consolidated deposit containing feldspar, rock fragments and a dark chloritic matrix. gumbo A term used in the U.S. for clay soils that become sticky, impervious, and plastic when wet. gypsum A mineral composed of hydrous calcium sulphate, commonly forming thick extensive evaporite beds. halite A mineral composed of sodium chloride common in evaporite rocks. igneous Term applied to rock or mineral formed by solidification of molten or partly molten material (magma). intrusvie rock (plutonic) Igneous rock formed by cooling and solidification of magma within the earth's crust. lignite A low-rank humic coal. limestone A sedimentary rock composed mostly of the mineral calcite (calcium carbonate) which is the consolidated equivalent of lime mud, calcareous sand, and/or shell fragments. limestone, argillaceous A limestone homogeneously mixed with 10-50% clay minerals. limestone, dolomitic A limestone containing 10-50% dolomite and 50-90% calcite. limestone, sandy A limestone homogeneously mixed with 10-50% quartz grains. marble A metamorphic rock composed of calcite. marl A consolidated or semi-consolidated mixture of clay and generally fine grained carbonate material. metamorphic rocks Rocks formed by mineralogical, chemical and structural alteration of pre-existing rocks under conditions of temperature and pressure at depth in the earth. mudstone Consolidated and indurated mud. no description No description is provided. no sample No sample is provided. ophiolite Basic and ultra-basic igneous rocks and their metamorposed, often hydrated, derivatives, believed to represent former oceanic crust. peat Unconsolidated, semi-carbonised plant remains which are a precursor of humic coal. phosphate Any mineral compound containing the ((PO4)3) radical. phosphate rock Any rock containing phosphate minerals such as apatite of sufficient purity and abundance to be an economic resource. potassium and magnesium salts Salts such as sylvinite, carnalite, keiserite with swelling properties that can severely obstruct drilling operations. quartzite A sedimentary rock composed of more than 95% of quartz. rhyolite Silica rich volcanic rock consisting of quartz and alkali feldspar with minor plagioclase and biotite. salt Common term for naturally occurring sodium chloride. sand An aggregation of particles having diameters in the range 1/16mm to 2mm usually consisting of quartz. sandstone A sedimentary rock composed of indurated sand. schist A strongly foliated crystalline metamorphic rock. serpentine A rock forming mineral of hydrous iron and magnesium silicates, often resulting from metamorhism of amphiboles and pyroxenes. shale A fine-grained sedimentary rock formed by the compaction of clay, silt or mud. silt Unconsolidated sedimentary material with grain sizes between 1/16mm and 1/256mm. siltstone Consolidated silt. slate A compact fine-grained metamorphic rock displaying slaty cleavage along which the rock may be cut into sheets. syenite Plutonic igneous rock composed essentially of alkali feldspar, with lesser sodic plagioclase, biotite and hornblende, and minor quartz. tillite (diamictite) Consolidated unsorted glacial deposits with particles ranging from boulder to mud in grain size and of highly variable composition. trachyte A group of fine-grained often porphyritic volcanic rocks containing alkali feldspar and minor mafic minerals. tuff An indurated pyroclastic deposit, predominantly consisting of fine-grained volcanic rocks: sedimentary particles may be present. Tuff may be deposited sub-aerially or sub-aqueously, and may be well sorted or heterogeneous. ultrabasic A class of igneous rocks composed mostly of mafic minerals such as pyroxenes along with calcic feldspar, with no free silica and a total silica content less than about 45%. undifferentiated The lithology is not differentiated. This is typically used to fill out a lithology description to 100 percent. unknown 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. QualifierType These values represent the type of qualifier in lithology. WITSML anhydritic Indicates that the associated lithology contains anhydrite argillaceous Indicates that the associated lithology has a clay content barite The mineral form of Barium sulphate. belemnitic Indicates that the associated lithology contains belemnite fossils or fragments thereof. bioturbated Indicates that the associated lithology has been disturbed by organisms before consolidation. bituminous Indicates that the associated lithology contains bituminous material bryozoans Indicates that the associated lithology contains bryozoan fossils or fragments thereof. burrowed Indicates that the associated lithology has been disturbed by burrowing organisms before consolidation calcareous Indicates that the associated lithology has a calcite content calcite concr Indicates that the associated lithology has calcite concretions carbonaceous Indicates that the associated lithology contains carbonaceous material chalky Indicates that the associated lithology has a chalk content chamosite Indicates that the associated lithology contains chamosite chert Indicates that the associated lithology contains chert fragments chlorite Indicates that the associated lithology contains chlorite concretions Indicates that the associated lithology contains concretions conglomeratic Indicates that the associated lithology contains conglomerate rock material. coral Indicates that the associated lithology contains corals and/or coral fragments crinoids Indicates that the associated lithology contains crinoids and/or crinoid fragments diatoms Indicates that the associated lithology contains diatoms and/or diatom fragments dolomite concretion Indicates that the associated lithology has dolomite concretions dolomite stringer Indicates that the associated lithology contains thin beds or veins of dolomite dolomitic Indicates that the associated lithology has a dolomite content dolomite A rock forming mineral composed of calcium-magnesium carbonate (CaMg(CO3)2). feldspar Indicates that the associated lithology contains feldspar ferruginous Indicates that the associated lithology contains minerals rich in iron oxide or iron hydroxide fissile Indicates that the associated lithology is fissile forams undifferentiated Indicates that the associated lithology contains foraminifera fossil fragment Indicates that the associated lithology contains fossil fragments fossils undifferentiated Indicates that the associated lithology contains fossils glauconite Indicates that the associated lithology contains glauconite granules glauconitic Indicates that the associated lithology is glauconitic gravelly Indicates that the associated lithology contains gravel sized particles. gypsiferous Indicates that the associated lithology contains significant gypsum content. halite Indicates that the associated lithology contains halite illite Indicates that the associated lithology contains the clay mineral illite kaolinite Indicates that the associated lithology contains kaolinite lignite Indicates that the associated lithology contains lignite limestone stringer Indicates that the associated lithology contains thin beds or veins of limestone lithic fragment Indicates that the associated lithology contains other rock fragments marly Indicates that the associated lithology contains marl mica Indicates that the associated lithology contains mica microfossil Indicates that the associated lithology contains undifferentiated microfossils no description No description is provided none No qualifiers specified oncolite A rock composed of stacked oncoliths oncolith A hemispheroidal mass of calcified algal laminae surrounding a mud fragment oncolithic Indicates that the associated lithology contains oncolites ooid or oolith Indicates that the associated lithology contains ooids (synonym: ooliths) ostracods Indicates that the associated lithology contains ostracod fossils pebbly Indicates that the associated material contains pebble sized particles. pelletal Indicates that the associated lithology contains pellets or fragments of pellets. pellet A round or rounded particle generally less than 10mm in diameter, not formed by rounding of detrital material. peloid A small particle of carbonate mineral in which individual crystals are too small to be distinguished either by the naked eye or under a polarizing microscope (less than 0.001mm). peloidal Indicates that the associated lithology contains peloids. phosphate Indicates that the associated lithology contains phosphates pisolite A sedimentary rock mainly consisting of pisoliths pisolith A sub-spherical body usually consisting of calcium carbonate, generally of length greater than 2mm plant remains Indicates that the associated lithology contains plant remains pyrite Indicates that the associated lithology contains pyrite quartz Indicates that the associated lithology contains quartz radiolaria Indicates that the associated lithology contains radiolaria salty Indicates that the associated lithology contains rock salt or halite sandy Indicates that the associated lithology has a sand content shell Indicates that the associated lithology contains shell fragments siderite Indicates that the associated lithology contains siderite siderite concretion Indicates that the associated lithology contains siderite concretions silty Indicates that the associated lithology has a silt content spicule A minute needle-like body of quartz or carbonate that forms part of skeletons of animals such as sponges, corals and radiolarians. spicular Indicates that the associated lithology contains spicules. stylolite A small, more or less columnar, striated extension of a rock body that fits into a corresponding surface, common in carbonate rocks. stylolitic Indicates that the associated lithology contains stylolites. tuffaceous Indicates that the associated lithology contains pyroclastic detrital material (tuff). tuffite Indicates that the associated lithology contains both pyroclastic and other detrital material. unknown 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. RealtimeData These values represent the name of a recording channel. WITSML length along fiber The position along the length of a DTS fiber. DTS temperature The temperature that was calculated from Distributed Temperature Survey data. Stokes intensity Stokes intensity values from a Distributed Temperature Survey. anti-Stokes intensity Anti-Stokes intensity values from a Distributed Temperature Survey. acetylene Acetylene ppm (cycle-based) azimuth corrected MWD azimuth (corrected) azimuth uncorrected MWD azimuth (uncorrected) bit revolutions, cumulative Bit revolutions, cumulative build rate MWD build rate caliper Caliper measurement cavings Cavings percentage cation exchange capacity Cation exchange capacity cementing cumulative returns Cementing cumulative returns cementing density in (average) Cementing fluid density in (average) cementing density out (average) Cementing fluid density out (average) cementing ECD at casing shoe Cementing effective circulating density at casing shoe cementing flow rate in (average) Cementing flow rate in (average) cementing flow rate in (calculated) Cementing flow rate in (calculated) cementing flow rate out (average) Cementing flow rate out (average) cementing flow rate out (calculated) Cementing flow rate out (calculated) cementing flow rate out (relative) Cementing flow rate out (percentage) cementing fluid type Cementing fluid type/batch cementing job type Cementing job type cementing plugs Cementing number and status of plugs cementing pump pressure (average) Cementing pump pressure (average) cementing stage Cementing stage number cementing temperature in (average) Cementing fluid temperature in (average) cementing temperature out (average) Cementing fluid temperature out (average) cementing volume to bump plug Cementing volume to bump plug cementing cement volume Cementing cement volume pumped cementing individual volume Cementing individual volume pumped cementing total volume Cementing total volume pumped chkPrAv Casing pressure (average), measured at surface carbon dioxide (cycle-based) Carbon Dioxide ppm (cycle-based) carbon dioxide (average) Carbon Dioxide ppm (average) carbon dioxide (minimum) Carbon Dioxide ppm (min) carbon dioxide (maximum) Carbon Dioxide ppm (max) conductivity Conductivity reading (corrected) conductivity of mud in (average) Mud conductivity going into hole conductivity of mud out (average) Mud conductivity coming out of the hole connections done Connections done connections remaining Connections to go cost per distance Instantaneous cost per distance cost per distance (average) Cost per distance averaged over the bit run cumulative time on bit Number of drilling hours on the bit density Density value density shale Shale density diameter of bit Bit diameter distance drilled by bit Distance drilled by the bit dogleg severity MWD dogleg severity DST bottom hole pressure DST bottom hole pressure DST bottom hole temperature DST Bottom hole temperature DST cumulative gas production DST cumulative gas production DST cumulative liquid production DST cumulative liquid production DST cumulative total production DST cumulative total production DST gas flow rate DST gas flow rate DST hydrogen sulfide (average) Hydrogen Sulfide (average) ppm DST identifier Drill stem test identifier DST liquid flow rate DST liquid flow rate DST surface pressure in casing DST surface pressure in casing DST surface pressure in tubing DST surface pressure in tubing DST surface temperature in tubing DST Surface temperature in tubing DST total flow rate DST Total flow rate DST tool time DST tool time (seconds) drilling exponent (corrected) Corrected drilling exponent ECD at bit depth Effective circulating density at bit depth ECD at casing shoe depth ECD at casing shoe depth ECD from MWD tool ECD from MWD tool ECD at total depth Equivalent circulating density at total depth neo-pentane neo-Pentane (eC5) ppm (cycle-based) neo-pentane (average) neo-Pentane (eC5) ppm (average) neo-pentane (minimum) neo-Pentane (eC5) ppm (min) neo-pentane (maximum) neo-Pentane (eC5) ppm (max) ethane Ethane (C2) ppm (cycle-based) ethane (average) Ethane (C2) ppm (average) ethane (minimum) Ethane (C2) ppm (min) ethane (maximum) Ethane (C2) ppm (max) formation fracture pressure gradient Formation fracture pressure gradient flow rate in (average) Mud flow into the hole flow in (relative) Flow into the hole measured as a percentage flow rate out (average) Mud flow out of the hole flow out (relative) Flow out of hole measured as a percentage overburden pressure gradient Formation overburden pressure gradient bit jet impact force Bit jet impact force formation pore pressure gradient Formation pore pressure gradient gas total (average) Total gas % connection gas (average) Connection gas (average) % connection gas (last) Connection gas (last reading) % connection gas (maximum) Connection gas (maximum) % trip gas (last) Trip gas last reading % gamma ray Gamma ray reading (uncorrected) gamma ray (corrected) Gamma ray reading (corrected) gravity tool face MWD gravity tool face gravity X-axis (corrected) X axis gravity corrected gravity X-axis (uncorrected) X axis gravity uncorrected gravity Y-axis (corrected) Y axis gravity corrected gravity Y-axis (uncorrected) Y axis gravity uncorrected gravity Z-axis (corrected) Z axis gravity corrected gravity Z-axis (uncorrected) Z axis gravity uncorrected hydrogen sulfide Hydrogen Sulfide ppm hydrogen sulfide (average) Hydrogen Sulfide (average) ppm hydrogen sulfide (minimum) Hydrogen Sulfide (min) ppm hydrogen sulfide (maximum) Hydrogen Sulfide (max) ppm hookload (average) Hookload, average, measured at surface hookload (minimum) Minimum hookload while running the stand hookload (maximum) Hookload, maximum measured at surface MWD magnetometer X (corrected) X axis magnetic corrected MWD magnetometer X (raw) X axis magnetic uncorrected MWD magnetometer Y (corrected) Y axis magnetic corrected MWD magnetometer Y (raw) Y axis magnetic uncorrected MWD magnetometer Z (corrected) Z axis magnetic corrected MWD magnetometer Z (raw) Z axis magnetic uncorrected iso-butane iso-Butane (iC4) ppm (cycle-based) iso-butane (average) iso-Butane (iC4) ppm (average) iso-butane (minimum) iso-Butane (iC4) ppm (min) iso-butane (maximum) iso-Butane (iC4) ppm (max) iso-hexane iso-Hexane (iC6) ppm (cycle-based) iso-hexane (average) iso-Hexane (iC6) ppm (average) iso-hexane (minimum) iso-Hexane (iC6) ppm (min) iso-hexane (maximum) iso-Hexane (iC6) ppm (max) inclination (corrected) MWD inclination (corrected) inclination near bit Near-bit inclination inclination (uncorrected) MWD inclination (uncorrected) iso-pentane iso-Pentane (iC5) ppm (cycle-based) iso-pentane (average) iso-Pentane (iC5) ppm (average) iso-pentane (minimum) iso-Pentane (iC5) ppm (min) iso-pentane (maximum) iso-Pentane (iC5) ppm (max) kick tolerance Kick tolerance lithology flag Lithology flag MWD alternator voltage Downhole tool alternator voltage MWD bottom hole annulus pressure Bottom hole annulus pressure MWD bottom hole internal pressure Bottom hole internal pressure bit total measured depth Total (measured) depth of bit MWD conductivity Mud conductivity measured depth of casing Measured depth of casing in the cementing measured depth of DST bottom Depth (measured) of bottom of DST interval measured depth of DST top Depth (measured) of top of DST interval measured depth of diverter tool Cementing depth to DV tool measured depth of hole Total (measured) depth of hole measured depth of returns Depth of cuttings returns methane Methane (C1) ppm (cycle-based) methane (average) Methane (C1) ppm (average) methane (minimum) Methane (C1) ppm (min) methane (maximum) Methane (C1) ppm (max) MWD derived fracture pressure gradient Fracture pressure gradient from MWD MWD derived pore pressure gradient Pore Pressure gradient from MWD MWD fluid resistivity in annulus Downhole fluid resistivity in annulus MWD fluid resistivity in pipe Downhole fluid resistivity in pipe MWD fluid temperature in annulus Downhole fluid temperature in annulus MWD fluid temperature in pipe Downhole fluid temperature in pipe MWD gamma ray Measured gamma ray value MWD gamma ray (corrected) Borehole corrected gamma ray value MWD motor speed Downhole motor RPM MWD resistivity Measured resistivity value MWD resistivity (corrected) Borehole corrected resistivity value magnetic tool face MWD magnetic tool face MWD torque (average) Downhole torque (average) MWD torque (maximum) Downhole torque (maximum) MWD axial vibration Downhole vibration in axial direction MWD lateral vibration Downhole vibration in lateral direction MWD torsional vibration Downhole vibration in torsional direction MWD weight on bit (average) Downhole weight on bit (average) MWD weight on bit (maximum) Downhole weight on bit (maximum) nor-butane nor-Butane (nC4) ppm (cycle-based) nor-butane (average) nor-Butane (nC4) ppm (average) nor-butane (minimum) nor-Butane (nC4) ppm (min) nor-butane (maximum) nor-Butane (nC4) ppm (max) neutron density Neutron density nor-hexane nor-Hexane (nC6) ppm (cycle-based) nor-hexane (average) nor-Hexane (nC6) ppm (average) nor-hexane (minimum) nor-Hexane (nC6) ppm (min) nor-hexane (maximum) nor-Hexane (nC6) ppm (max) nor-pentane nor-Pentane (nC5) ppm (cycle-based) nor-pentane (average) nor-Pentane (nC5) ppm (average) nor-pentane (minimum) nor-Pentane (nC5) ppm (min) nor-pentane (maximum) nor-Pentane (nC5) ppm (max) neutron porosity Neutron porosity neutron porosity (corrected) Neutron porosity corrected neutron porosity ratio Neutron porosity ratio pass number MWD pass number trip number Trip number photoelectric effect Photoelectric effect bit pressure loss Bit pressure loss block position Block position hydraulic power of bit Bit hydraulic power hydraulic power per area of bit Bit hydraulic power per area hydraulic power of pump Pump hydraulic power pressure loss at annulus Annulus pressure loss pressure drop at bit pressure drop at the bit pressure loss at bit Bit pressure loss percentage pressure drop (calculated or observed) Calculated/observed pressure loss ratio (%) pressure drop at motor Mud motor pressure loss pressure drop at MWD tool MWD tool pressure loss pressure drop at string Pipe (drillstring) pressure loss pressure drop at surface Surface pressure loss pressure at MWD tool Downhole pressure from MWD tool pressure at pump (average) Pump (standpipe) pressure, measured at surface shut-in pressure (maximum) Maximum permitted shut-in pressure propane Propane (C3) ppm (cycle-based) propane (average) Propane (C3) ppm (average) propane (minimum) Propane (C3) ppm (min) propane (maximum) Propane (C3) ppm (max) plastic viscosity Mud plastic viscosity resistivity Resistivity reading resistivity (corrected) Resistivity reading (corrected) rate of penetration (average) Drill Rate rate of penetration (intantaneous) Rate of Penetration (intantaneous) rotation flag Rotation flag = 1 if pipe is rotating, else = 0 rotary speed (average) Rotary speed, measured at surface (revs per minute) running speed down (average) Trip average running speed, down running speed down (maximum) Trip maximum running speed, down running speed up (average) Trip average running speed, up running speed up (maximum) Trip maximum running speed, up sonic coherence Coherence sonic density Sonic density sonic delta-time (corrected) Sonic delta T corrected sonic delta-time (uncorrected) Sonic delta T raw reading sonic porosity Sonic porosity sonic porosity (corrected) Sonic porosity corrected stroke rate Pump stroke rate (strokes/minute) stroke rate total Cumulative pump stroke rate (strokes/minute) state of well State of well during DST (SHUT-IN or FLOWING) in-slips status In-slips status (In or out) lag strokes Lag strokes stroke count (total) Cumulative total pump strokes stroke count Pump strokes for each pump mud temperature in (average) Mud temperature going into hole mud temperature out (average) Mud temperature coming out of the hole time in slips Time in slips (seconds) time out of slips Time out of slips (seconds) torque (average) Rotary torque, average, measured at surface torque for break-out (maximum) Break-out torque torque for make-up (maximum) Make-up torque torque (maximum) Rotary torque, maximum, measured at surface trip tank volume Trip tank volume turn rate MWD walk/turn rate TVD of Bit Total (vertical) depth of bit TVD of casing TVD of casing in the cementing context TVD of DST bottom Depth (vertical) of bottom of DST interval TVD of DST top Depth (vertical) of top of DST interval TVD of hole Total (vertical) depth of hole tank volume Tank volume tank volume (active) Tank volume (active) tank volume change Mud Tank Volume change tank volume change (active) Tank volume change (active) tank volume change total Tank volume change (total) tank volume (total) Tank volume (total) annular velocity (minimum) Annular velocity (minimum) annular velocity (maximum) Annular velocity (maximum) velocity of jet Bit jet velocity fill volume (expected) Fill/gain volume, expected fill volume total (expected) Fill/gain volume, expected, cumulative fill volume (observed) Fill/gain volume, observed fill volume total (observed) Fill/gain volume, observed, cumulative weight on bit (average) Weight on bit, measured at surface weight on bit (maximum) Weight on bit, maximum, measured at surface mud density in (average) Mud density going into the hole mud density out (average) Mud density coming out of the hole yield point Mud yield point unknown 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. NameTagLocation Defines the locations where an equipment tag might be found. WITSML body The body of the equipment. For tubular components this specifies a location toward the middle of the component. box The female threaded end of a device. pin The male threaded end of a device. other This, by exclusion, tells a user to look elsewhere than on the body or near the ends of a component. unknown 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. NameTagNumberingScheme Defines the specifications for creating equipment tags. WITSML EPC64 RFID - Electronic Product Code, 64 bit. EPC96 RFID - Electronic Product Code, 96 bit. MSRCID RFID - Merrick Systems Rapid Component Identification. ANSI/AIM-BC2 Barcode - 1995, Uniform Symbology Specification ANSI/AIM-BC6 Barcode - 1995, Uniform Symbology Multi Row Specification ANSI/AIM-BC10 Barcode - 1996, International Symbology Specification - MaxiCode EAN.UCC Barcode - Composite Symbology F2F Magnetic - ISO/IEC 7811 MFM Magnetic - "Modified Frequency Modulation for Magnetic Stripes" standard developed by AIM Inc. serial number Serial number contains a code which does not require any further knowledge of an encoding scheme to manipulate or process. The identifier is the only information in the "tag". unknown 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. NameTagTechnology Defines the mechanisms for attaching an equipment tag to an item. WITSML tagged Independent identification components attached or embedded to a larger component for purposes of identification of the larger component. Tags typically use electronic, radio or sound based technologies and that require a special non-optical device to read them. Radio Frequency Identification (RFID tags) are of this type, as are some magnetic and sound based identification technologies. labeled An optical label attached to a component. The label may be glued, riveted or attached by some other method and may contain a serial number, barcode or other optically recognized information. Note that a label may possibly have a combination of identifiers associated with it, such as a serial number, a barcode and an embedded RFID identifier. This would generate three nameTags for the one physical label, two of type 'label' for the barcode and serial number and one of type 'tagged' for the RFID identifier. intrinsic Identification technologies where the intrinsic properties of the component to be identified contain the identification information and no other unique code has been added. For example, some magnetic identification technologies use grooves machined into a component. Some components may also be identified, for example, by their individual sonic signature or optical profile. stamped An identification code physically stamped into the base material of the component to be identified. Note that if a serial number is stamped into a label attached to a component, 'labeled' should be used and not 'stamped'. Stamped identifiers can wear off but can not fall off. painted Painted or stenciled on the material. temporary Temporary identification codes marked with grease pencil, chalk, or such. unknown 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.