7.2 Tubular Data Object

Topic Version1Published11/11/2016
For StandardWITSML v2.0

The tubular object is used to capture information about the configuration of a string of pipe, including drill strings, coiled tubing, and casing. Some example workflows using the tubular object include: BHA component tracking, hydraulic calculations, displacement calculations, bit properties and statistics, and many others.

The tubular object is uniquely identified within the context of one wellbore object. Typically, a tubular document (an instance of a tubular object) is created when a pipe string is being designed or planned, and, as the pipe string is being constructed, the components and lengths in the document can be edited and finalized. For a drill string, when it is deconstructed, the tubular document is also updated to populate the bit record components.

The tubular object is a static (not growing) object. As such, the document does not change over time; a new tubular document should be created for each change to the configuration of the string being planned or used. Reference to how a particular string was or will be used is referenced in the BHA run object.