A unique, oriented hole from the intended bottom of a drilled interval to the surface of the Earth. If more than one path exists from a wellbore bottom point to a surface point, then more than one wellbore exists. The wellbore provides a conduit for operations within a well.

identifier (M, K: ndt_name) (1144)

Identifier used to identify a wellbore within a well. This is often a sequence number or character, such as 1, 2, A, B, C, etc.


ref_existence_kind (M, K, I: ref_existence_kind)

The existence kind for the facility e.g. actual, planned, required or predicted. Inherited from facility.


well (M, K: well(wellbore))

Specifies the well in which this wellbore is a part. Each wellbore must be a part of one well.


abandonment_date (O: ndt_date_tod) (0840)

This is the date and time of day that the wellbore was permanently removed from service.


completion_date (O: ndt_date_tod) (0840)

This is the date that the activities that created the wellbore were completed and the wellbore was available for service.


description (O, I: ndt_comment)

A description of the facility. Inherited from facility.


activity (I, V: SET[0:?] activity(facility))

Defines the activities which have made use of or plan to use this facility. Each wellbore may utilized by one or more activity. Inherited from facility.


address (I, V: SET[0:?] address(facility)) (1159)

The set of addresses which have been defined for this facility. Each wellbore may have one or more address. Inherited from facility.


application_for_permit (I, V: SET[0:?] application_for_permit(facility))

These are the applications for permit which have been submitted for this facility. Each wellbore may be the subject of one or more application_for_permit. Inherited from facility.


business_associate_facility_association (I, V: SET[0:?] business_associate_facility_association(facility))

Indicates various involvements with business associates. Each wellbore may have one or more business_associate_facility_association. Inherited from facility.


create_wellbore_position (V: SET[0:?] position_in_wellbore(wellbore))

The set of wellbore positions originally created within this wellbore. A wellbore may contain wellbore positions other than the ones created within it, but this is the set that did not exist prior to this wellbore and utilized this wellbore in their creation. Each wellbore may locate one or more position_in_wellbore.


data_collection (I, V: SET[0:?] data_collection(collection_content))

Indicates the data collections that include this instance of E and P data. Each wellbore may be a member of one or more data_collection. Inherited from e_and_p_data.


datum_for_ranking (I, V: SET[0:?] object_ranking(base_object))

Indicates that an object is being used as a basis for comparison with another object. Each wellbore may datum for ranking one or more object_ranking. Inherited from object_of_interest.


derived_interest (I, V: SET[0:?] derived_interest_makeup(interest_for))

These are the ownership fractions for business associates of this business object. Each wellbore may be owned according to one or more derived_interest_makeup. Inherited from business_object.


earth_model (I, V: SET[0:?] earth_model(spatial_object))

Indicates various earth models which include this spatial representation. Each wellbore may be part of one or more earth_model. Inherited from spatial_object.


equipment_installation (I, V: SET[0:?] equipment_installation(facility))

Gives the equipment utilizations that contribute to the service or business function of the facility, otherwise described as installation. Each wellbore may define the service resulting from one or more equipment_installation. Inherited from facility.


facility_classification (I, V: SET[0:?] facility_classification(facility))

Gives the classifications that have been made of the facility. Each wellbore may be classified by one or more facility_classification. Inherited from facility.


fulfill (I, V: SET[0:?] facility_fulfillment(fulfillment))

Shows the fulfillment of this facility (planned, required, or) expected) by another facility via the fulfillment association. Each wellbore may be fulfilled by one or more facility_fulfillment. Inherited from facility.


fulfillment (I, V: SET[0:?] facility_fulfillment(fulfill))

Indicates the various planned facilities from which this facility is derived. Each wellbore may be fulfillment of one or more facility_fulfillment. Inherited from facility.


graphical_element (I, V: SET[0:?] graphical_element(depicted_object))

Specifies one or more graphical elements which are depicting this data item. Each wellbore may be depicted by one or more graphical_element. Inherited from e_and_p_data.


guideline_or_privilege (I, V: SET[0:?] guideline_or_privilege(business_object))

These are the guidelines, limitations, regulations or privileges that are specifically defined for this business object. Other general guidelines, etc., that apply to this business object are defined via the typical and class relationships (if any) defined for this business object. Each wellbore may be the subject of one or more guideline_or_privilege. Inherited from business_object.


guideline_or_privilege_compliance (I, V: SET[0:?] guideline_or_privilege_compliance(business_object))

These are the designations of compliance with guidelines, limitations, regulations and privileges that are made for this business object. Each compliance statement describes the state of compliance for a specified guideline, limitation, regulation or privilege for a period of time. Each wellbore may be the subject of one or more guideline_or_privilege_compliance. Inherited from business_object.


intersection_role (I, V: SET[0:?] space_time_operation(intersecting_object))

Indicates a space/time operation for which the object is involved as an intersecting agent. For projection, this is the screen on which an object is being projected. For proximity, this is the magnet object. Each wellbore may be the intersecting object for one or more space_time_operation. Inherited from topological_object.


materials_characterization (I, V: SET[0:?] materials_characterization(site))

Indicates various materials analysis activities which take place at this site. Each wellbore may be the site of one or more materials_characterization. Inherited from facility.


material_installation (I, V: SET[0:?] material_installation(facility))

Gives all the material utilizations that contribute to the service or business purpose of the facility. Each wellbore may defines the service resulting from one or more material_installation. Inherited from facility.


object_of_ranking (I, V: SET[0:?] object_ranking(ranked_object))

Indicates that an object is being classified in a rank order based on its characteristics. Each wellbore may object of ranking one or more object_ranking. Inherited from object_of_interest.


other_composite_spatial_object (I, V: SET[0:?] other_composite_spatial_object(composite_object))

Defines the set of composite spatial objects of which this spatial object is a component. Each wellbore may be a component of one or more other_composite_spatial_object. Inherited from spatial_object.


part_of_facility (I, V: SET[0:?] facility_composition(part))

Gives the facilities for which this facility is a component part. For example: CDU1 is part of Refinery A. Each wellbore may be the part for one or more facility_composition. Inherited from facility.


primary_role (I, V: SET[0:?] space_time_operation(primary_object))

Indicates a space/time operation for which the object is involved as a primary agent. For degeneration, this object is being degenerated. For projection, this object is being projected onto another object. For proximity, this is the container object. Each wellbore may be the primary object for one or more space_time_operation. Inherited from topological_object.


primary_topological_relationship (I, V: SET[0:?] topological_relationship(primary_topological_object))

Indicates a topological relationship in which the topologic object has the role of primary agent. For an object intersection type of "inside" this is the containing role (e.g., if a city is inside a county then the county would be the primary agent). For all other object intersection types the roles are symmetrical and both relationships must be searched for a particular object. For example, if a wellbore and a formation overlap then either could be chosen as the primary agent with the other chosen as the secondary agent. Each wellbore may be primarily involved in one or more topological_relationship. Inherited from topological_object.


property_damage (I, V: SET[0:?] property_damage(facility))

Indicates various records of property damage associated with this facility. Each wellbore may be afflicted with one or more property_damage. Inherited from facility.


pty_fluid_level (V: SET[0:?] pty_fluid_level(wellbore))

Each wellbore may have a property of one or more pty_fluid_level.


pty_geometry_1d_edge (I, V: SET[0:?] pty_geometry_1d_edge(edge))

Each wellbore may have a property of one or more pty_geometry_1d_edge. Inherited from edge.


pty_geometry_2d_edge (I, V: SET[0:?] pty_geometry_2d_edge(edge))

Each wellbore may have a property of one or more pty_geometry_2d_edge. Inherited from edge.


pty_geometry_3d_edge (I, V: SET[0:?] pty_geometry_3d_edge(edge))

Each wellbore may have a property of one or more pty_geometry_3d_edge. Inherited from edge.


pty_length (I, V: SET[0:?] pty_length(edge))

Each wellbore may have a property of one or more pty_length. Inherited from edge.


ref_naming_system (O: ref_naming_system)

The naming system in which the identifier is specified and determined to be unique. Examples include: 12 digit API numbers, regulatory wellbore names, etc.


ref_wellbore (O: ref_wellbore)

The type of wellbore, either initial, re-spud, remedial sidetrack or sidetrack. This does not describe the purpose of the wellbore, but rather the circumstances during which the wellbore was created.


ref_wellbore_purpose (O: ref_wellbore_purpose)

A description of the initial purpose of a wellbore. In the case of "re-spuds" and "remedial sidetracks", a group of wellbores should have the same purpose. Examples of wellbore purpose are: development wellbore, delineation wellbore, new pool test, and extension wellbore.


ref_wellbore_trajectory_shape (O: ref_wellbore_trajectory_shape)

A general description of the intended trajectory profile.


ring (O, I: SET[0:?] ring(edge))

Defines the rings of which this edge is a component. Each wellbore may be a component of one or more ring. Inherited from edge.


sample_acquisition (I, V: SET[0:?] sample_acquisition(site))

Indicates various material acquisition activities which take place at this facility. Each wellbore may be the site of one or more sample_acquisition. Inherited from facility.


satisfy_obligation (I, V: SET[0:?] contractual_obligation(contractual_obligation_object))

These are the contractual obligations that this business object is designated as fulfilling, either completely or partially. Each wellbore may satisfy one or more contractual_obligation. Inherited from business_object.


secondary_topological_relationship (I, V: SET[0:?] topological_relationship(secondary_topological_object))

Indicates a topological relationship in which the object is in the role of secondary agent. For an object intersection type of "inside" this is the contained role (e.g., if a well is inside a field then the well would be the secondary agent). For all other object intersection types the roles are symmetrical and both relationships must be searched for a particular object. For example, if a wellbore and a formation overlap then either could be chosen as the secondary agent with the other chosen as the primary agent. Each wellbore may be involved in one or more topological_relationship. Inherited from topological_object.


seismic_geometry_set (V: SET[0:?] seismic_geometry_set(wellbore))

The geometry sets which are identified by this wellbore. Each wellbore may be associated with one or more seismic_geometry_set.


site_of_activity (I, V: SET[0:?] materials_processing(located_by_facility))

Indicates various materials processing activities which take place at this site. Each wellbore may be the site of one or more materials_processing. Inherited from facility.


source_space_time_operation (I, V: BAG[0:1] space_time_operation(resulting_object))

Indicates the space/time operation from which a topological object was the result. For addition, this is the union of two objects. For degeneration, this is the degenerate object. Each wellbore may be the result of one space_time_operation. Inherited from topological_object.


subject_of_contract (O, I: SET[0:?] contract(contract_business_object))

These are the contracts that specify information about the business object, and the business object is subject to the terms of these contracts. Each wellbore may be a subject of one or more contract. Inherited from business_object.


subject_of_contract_designation (I, V: SET[0:?] contract_designation(contract_designation_object))

This defines the contract designations that are made for this business object. For example, this may be the contract designations that define the specific interest ownership fractions of the business object as it is bought and sold. Each wellbore may be subject to one or more contract_designation. Inherited from business_object.


subsurface_rock_segment (V: SET[0:?] subsurface_rock_segment(wellbore))

Indicates the various rock layers which make up the environment of the wellbore. Each wellbore may be the site of one or more subsurface_rock_segment.


typical_facility (O, I: typical_facility(facility))

Gives the typical facility whose specification was used as the generic basis for this facility. Each wellbore may be specified by one typical_facility. Inherited from facility.


vertex (O, I: SET[0:2] vertex(edge))

Defines the zero, one or two vertices which form the boundary of the edge. Each wellbore may be bounded by one or more vertex. Inherited from edge.


wellbore_activity (V: SET[0:?] wellbore_activity(wellbore))

Indicates the various activities which take place in this wellbore. Each wellbore may be the site for one or more wellbore_activity.


wellbore_alias (V: SET[0:?] wellbore_alias(wellbore))

Indicates the various identifiers by which this wellbore is known. Each wellbore may be known by one or more wellbore_alias.


wellbore_component_facility (V: SET[0:?] wellbore_component_facility(wellbore))

Indicates various operation facilities installed in a wellbore. Each wellbore may contain one or more wellbore_component_facility.


wellbore_geologic_target (V: SET[0:?] wellbore_geologic_target(wellbore)) (1216)

These are the geologic and local rock features represent the targets of this wellbore. Each wellbore may may have defined one or more wellbore_geologic_target.


wellbore_status (V: SET[0:?] wellbore_status(wellbore))

Indicates various states of operational status for a wellbore. Each wellbore may have one or more wellbore_status.


well_log (V: SET[0:?] well_log(wellbore))

Indicates a well log depicting the well log traces of this wellbore. Each wellbore may be represented by one or more well_log.


well_log_trace (V: SET[0:?] well_log_trace(wellbore))

Indicates well log traces which contain descriptive properties of this wellbore. Each wellbore may be characterized by one or more well_log_trace.

Local rules:

Uniqueness Constraint
identifier, ref_existence_kind, well
Supertype path(s):
topological_object > spatial_object > simple_spatial_object > edge > wellbore.
e_and_p_data > object_of_interest > business_object > facility > wellbore.

Entity projects as table WELLBORE.

Referenced in Diagrams:

• EQF3: Facility Subtypes (1051, 1058)
• GPA1: Seismic Geometry (1000)
• GPI2: Checkshot Analysis (1226)
• HL4: Object Aliasing
• WB1: Wellbore Component Facility (1051, 1124)
• WI1: Well and Wellbore (1123)
• WI2: Wellbore Position (1051, 1124, 1137, 1226)
• WL1: Well Logs and Traces (0705)
• WL2: Well Logging Activities
• WO1: Well Operations (0947, 1126, 1129)
• WO2: Wellbore Survey and Targets (1123, 1177)