WITSML data objects
These are the WITSML server 1.4.1.1 data objects and their respective Cognite Data Fusion (CDF) resource types:
| DATA OBJECT | DEFINITION | GROWING | CDF TYPE |
|---|---|---|---|
| attachment | This object provides a central location for finding a digital attachment associated with another WITSML well-related object. The attachment is captured in a base 64 binary type. | NO | CDF RAW and file content in CDF Files |
| bhaRun | This object is used to capture information about one run of the drill string into and out of the hole. The drill string configuration is described in the tubular object. That is, one configuration may be used for many runs. This object is uniquely identified within the context of one wellbore object. | NO | CDF RAW |
| cementJob | This object is used to capture information about cementing operations that are undertaken to seal the annulus after a casing string has been run, to seal a lost circulation zone, or to set a plug to support directional drilling operations or seal a well so that it may be abandoned. This object is uniquely identified within the context of one wellbore object. | NO | CDF RAW |
| changeLog | This object is used to provide a central location for knowledge of changes in the other objects. This object only makes sense within the context of a WITSML server because there is no domain data in the object. | NO | Not supported |
| convCore | This object is used to capture information about a conventional core. This includes a description of the geology and lithology over the interval. See also sidewallCore. This object is uniquely identified within the context of one wellbore object. | NO | CDF RAW |
| coordinateReferenceSystem | This object is used to define the details about a Coordinate Reference System (CRS) using GML version 3.2.1 schemas as defined at Index of /gml/3.2.1 . A best practice would be to reference a well-known CRS as defined by the EPSG (EPSG Geodetic Parameter Dataset ) rather than using the coordinateReferenceSystem object to define one from scratch. | NO | Not supported |
| drillReport | This object is used to capture a daily drilling report focused on reporting from the operator to partners or to a governmental agency. See the opsReport object for a similar report focusing on a service company to an operator. This object is uniquely identified within the context of one wellbore object. | NO | CDF RAW |
| fluidsReport | The fluidsReport object is used to capture an analysis of the drilling mud. This object is uniquely identified within the context of one wellbore object. | NO | CDF RAW |
| formationMarker | This object is used to capture information about a geologic formation that was encountered in a wellbore. This object is uniquely identified within the context of one wellbore object. | NO | CDF RAW |
| log | This object is used to capture the curves on a well log. It was designed primarily for MWD logs and is constrained to capturing curves from a single pass. See wellLog for more complex logging situations. This object is uniquely identified within the context of one wellbore object. | Systematically growing | CDF Sequences for depth-based logs, CDF Time series for time-based logs, CDF RAW |
| message | This object is used to provide a central location for informative time-stamped information about another well-related object. These messages can represent alarms, warnings, events, etc. | NO | CDF RAW |
| mudLog | This object is used to capture information in a mud log. This includes lithologic information derived from cuttings encountered on a shaker screen at a site. This object is uniquely identified within the context of one wellbore object. | Randomly growing | CDF RAW |
| objectGroup | This object is used to capture explicit knowledge that multiple different object instances are related. The relationship generally relates to a common acquisition technique such as logging while drilling, wireline logging, well test, wireline formation test, etc. | NO | CDF RAW |
| opsReport | This object is used to capture a daily drilling report focused on reporting from the service company to the operator. See the drillReport for a similar object whose focus is an operator to a partner or to a governmental agency. This object is uniquely identified within the context of one wellbore object. | NO | CDF RAW |
| rig | This object is used to capture information about a drilling rig used to drill a wellbore. This object is uniquely identified within the context of one wellbore object. | NO | CDF RAW |
| risk | This object is used to provide a central location for capturing risk information about other well-related objects. | NO | CDF RAW |
| sidewallCore | This object is used to capture information about a core from the side of a borehole. See also convCore. This object is uniquely identified within the context of one wellbore object. | NO | CDF RAW |
| stimJob | The stimJob object is used to capture a post-job summary report about a stimulation (fracture) job. This object is uniquely identified within the context of one wellbore object. | NO | CDF RAW |
| surveyProgram | This object is used to capture information about the nature, range, and sequence of directional surveying tools run in a wellbore for the management of positional uncertainty. This object is uniquely identified within the context of one wellbore object. | NO | CDF RAW |
| target | This object is used to capture information about the intended targets of a trajectory survey. This object is uniquely identified within the context of one wellbore object. | NO | CDF RAW |
| toolErrorModel | This object is used to define a surveying tool error model. This object is globally unique. | NO | CDF RAW |
| toolErrorTermSet | This object is used to define a set of surveying tool error terms that may be utilized in a toolErrorModel. This object is globally unique. | NO | CDF RAW |
| trajectory | The trajectory object is used to capture information about a directional survey in a wellbore. It contains many trajectory stations to capture information about individual survey points. This object is uniquely identified within the context of one wellbore object. | Randomly growing | CDF RAW |
| tubular | This object is used to capture information about the configuration of a drill string. See the bhaRun object for information about the use of this configuration. This object is uniquely identified within the context of one wellbore object. | NO | CDF RAW |
| wbGeometry | This object is used to capture information about the configuration of the permanently installed components in a wellbore. It does not define the transient drilling strings (see the tubular object) or the hanging production components. This object is uniquely identified within the context of one wellbore object. | NO | CDF RAW |
| well | This object is used to capture the general information about a well. This might sometimes be called a well header. All information that is the same for all wellbores (sidetracks) is contained in the well object. | NO | CDF RAW |
| wellbore | This object is used to capture the general information about a wellbore. This might sometimes be called a wellbore header. A wellbore represents the path from the surface to a unique bottomhole. The wellbore object is uniquely identified within the context of one well object. | NO | CDF RAW |