WITSML - Mud Log Parameter Component Schema The type of the mud log parameter. The data and time related to the parameter. At least one of dTime or mdTop must be given. The time refers to the top of the interval. The measured depth at a point or at the top of an interval. If it represents the top of an interval then bottom measured depth must also be given. At least one of dTime or mdTop must be given. The bottom of an interval along the borehole. The bottom of the interval cannot be given unless the top is also given. A force value (e.g., hookload) that represents the parameter. A concentration value that represents the parameter. A equivalent mud weight value that represents the parameter. This commonly used for pressure gradient parameters and pressure parameters. A pressure gradient value that represents the parameter. This is sometimes specified instead of an equivalent mud weight. A textual parameter value. This value is typically annotation on the log. All spaces, tabs, line feeds and carriage returns are retained in the string. Characters representing line breaks should be replaced by a line feed or carriage return. Unique identifier for the mud parameter.