Geology

Class List Definitions

Aquifer

A water-bearing layer of permeable rock.

TRUE

FALSE

Basin

A geologic region drawn on the surface of the Earth, including the rocks near the surface. It may be defined by an outline that corresponds to the margin of a basin, sub-basin, or an area of consistent geologic traits such as a common stratigraphic sequence.

TRUE

FALSE

Basin_Parm

Indicates the actual value of a named layer parameter defined in the R_Zone_Parameter catalog, for an instance of Basin.

TRUE

FALSE

Fault

A fracture or zone of fractures along which there has been displacement of the sides relative to one another parallel to the fracture.

TRUE

FALSE

Fluid_Feature_Contact

A surface of contact between fluids contained within rock units. An example is the oil water contact in an oil field.

TRUE

FALSE

Generic_Geol_Feature_Comp

Contains the composition for whole-part associations of generic geologic features. One generic geologic feature is composed of one or more subtype generic geologic features according to an established geologic classification hierarchy as a member in a group.

TRUE

FALSE

Generic_Geol_Feature_Syn

Contains associations of two generic geologic features that have the same basic meaning but are named differently. The relationship is considered one-directional, which means if a name is a synonym for another generic geologic feature name, you cannot assume that the reverse is true.

TRUE

FALSE

Generic_Geol_Feature_Time

A cross-reference class for generic geologic features and the geologic times when they were formed.

TRUE

FALSE

Generic_Geologic_Feature

A general geologic feature that has generic or unspecified geologic characteristics. These may be clarified at a later time or may only be specified by their anomalous nature.

TRUE

FALSE

Generic_Geologic_Surface

A general geologic surface that has generic or unspecified geologic characteristics. These may be clarified at a later time or may only be specified by their anomalous nature.

TRUE

FALSE

Geologic_Facies

The aspect, appearance, and characteristics of a rock unit, usually reflecting the conditions of its origin. The basis for facies definition may be a limited set of rock properties that can be related to key geologic processes. Geologic facies are generally more limited in lateral or vertical extent than stratigraphic layers and therefore may provide important influences on reservoir closure and will impact fluid flow.

TRUE

FALSE

Geologic_Feature

A naturally occurring feature or intersection of features found within or on the Earth. Features are described in classes of geologic regions having substance and form, and/or geologic interfaces, expressing the topologic relationships of geologic regions or other intersections. Epicentre V3.0

TRUE

Geologic_Layer

A three-dimensional geologic feature.

TRUE

FALSE

Geologic_Layer_Parm

Indicates the actual value of a named layer parameter defined in the R_Zone_Parameter catalog, for an instance of Geologic_Layer.

TRUE

FALSE

Geologic_Layer_Time

A cross-reference class for geologic layers, and the geologic times when they were formed.

TRUE

FALSE

Geologic_Surface

A geologic surface that characterizes a boundary of one or more geologic features.

TRUE

FALSE

Geologic_Surface_Time

A cross-reference class for geologic surfaces and the geologic times when they were formed.

TRUE

FALSE

Layer_Column_Assembly

A cross-reference entity defining the ordering of stratigraphic layers in stratigraphic columns.

TRUE

FALSE

Layer_Composite

Contains the composition for whole-part associations of geologic layers. One layer is composed of one or more sub-layers according to an established geologic classification hierarchy as a member in a group.

TRUE

FALSE

Layer_Event_Environment

An intersection class used for including geologic layers in the description of the environment in which an event occurs.

TRUE

FALSE

Layer_Synonym

Contains associations of two layers that have the same basic meaning but are named differently. The relationship is considered one-directional, which means if a name is a synonym for another layer name, you cannot assume that the reverse is true.

TRUE

FALSE

Paleontology

Stores the information of the fossils collected from rock layers.

TRUE

FALSE

R_Facies

The type of geologic facies.

TRUE

FALSE

R_Fault

Reference entity that contains the valid fault classifications. Examples are normal, antithetic, reverse, strike-slip, thrust, radial and concentric.

TRUE

FALSE

R_Fossil

Reference entity that provides the types of fossils and the features.

TRUE

FALSE

R_Geochronology

Reference entity that names a span of continuous time in geologic history. A geochronologic unit refers to the time. A chronostratigraphic unit refers to rock. They may have the same name For example, the Cretaceous Period (Geochronology) is the time unit for the deposition of rocks of the Cretaceous System (Chronostratigraphy).

TRUE

FALSE

R_Geologic_Layer

Reference entity that provides an approved or standard name for 3-D geologic layers and facies. This includes standard lithostratigraphic names for formations and members.

TRUE

FALSE

R_Geologic_Province

A large region characterized by similar geologic history.

TRUE

FALSE

R_Geologic_Surface

Reference entity that provides an approved or standardized name for geologic feature boundaries.

TRUE

FALSE

R_Reservoir_Alias

The type of alternate name for a reservoir.

TRUE

FALSE

R_Reservoir_Drive_Mech

Reference entity that contains the valid reservoir drive mechanisms. Examples are dissolved-gas drive, gas-cap drive, and water drive.

TRUE

FALSE

R_Reservoir_Status

The operational or legal status of the reservoir.

TRUE

FALSE

R_Rock_Fluid_Feature

Reference entity that provides an approved or standardized name for reservoirs and aquifers.

TRUE

FALSE

R_Strat_Surface

Reference entity that contains the valid stratigraphic boundary classifications. For unconformity surfaces, examples include Angular Unconformity, Diastem, Disconformity and Nonconformity. For conformable surfaces, examples include Chronostrat Contact, Lithostrat Contact, Biostrat Contact, and Facies Contact.

TRUE

FALSE

R_Stratigraphic_Rank

The layer position in the stratigraphic hierarchy. A standard example from the Code of Stratigraphic Nomenclature is Group, Formation, Member, and Bed as the units for Lithostratigraphic layers.

TRUE

FALSE

Reservoir

A porous and permeable rock volume having seal and closure properties that make them capable of containing economic hydrocarbons.

TRUE

FALSE

Reservoir_Alias

A class to store alternative names for a reservoir.

TRUE

FALSE

Reservoir_Analysis

Analysis of reservoir.

TRUE

FALSE

Reservoir_Fluid

A fluid contained in the reservoir.

TRUE

FALSE

Reservoir_Pty_Set

A consistent set of properties of a reservoir usually identified during a particular reservoir analysis. The properties are average properties over the life of the reservoir.

TRUE

FALSE

Reservoir_State_Pty_Set

The pressure and temperature conditions of reservoir.

TRUE

FALSE

Rock_Fluid_Feat_Composite

Contains the composition for whole-part associations of rock fluid features. One rock fluid feature is composed of one or more sub-rock fluid features according to an established classification as reservoir in a sub block is a part of a reservoir in the parent block.

TRUE

FALSE

Rock_Fluid_Feature

A rock fluid feature is the combined properties of solid rock objects and the fluids they contain.

TRUE

FALSE

Rock_Fluid_Feature_Surf

A cross-reference class for the set of geologic boundaries that define the outline for rock fluid features.

TRUE

FALSE

Rock_Fluid_Feature_Syn

Contains associations of two rock fluid features that have the same basic meaning but are named differently. The relationship is considered one-directional, which means if a name is a synonym for another rock fluid feature name, you cannot assume that the reverse is true.

TRUE

FALSE

Rock_Fluid_Feature_Time

A cross-reference class for rock fluid features and the geologic times when they were formed.

TRUE

FALSE

Strat_Column

The idealized sequence of rock units across a given extent. Often a stratigraphic column is generalized from several measured sections at a type location and applied to the geologic region as a whole.

TRUE

FALSE

Stratigraphic_Layer

A stratigraphic rock feature. This may include any of the formally defined disciplines in stratigraphy, including Lithostratigraphy, Sequence Stratigraphy, Chronostratigraphy, and Biostratigraphy.

TRUE

FALSE

Stratigraphic_Surface

A surface of contact between rock units in a stratigraphic sequence. They include both nonconformities and conformities.

TRUE

FALSE

Surface_Composite

Contains the composition for whole-part associations of geologic surfaces. One surface is composed of one or more sub-surfaces according to an established geologic classification hierarchy as a member in a group.

TRUE

FALSE

Surface_Synonym

Contains associations of two surfaces that have the same basic meaning, but are named differently. The relationship is considered one-directional, which means if a name is a synonym for another surface name, you cannot assume that the reverse is true.

TRUE

FALSE

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