POSC Specifications
Version 3.0
Epicentre Standard Values
naming_system

naming_system

Standard Instance Values

identifier description source _reference source version status
        ref _version .identifier  
POSC basic The basic set of values that has been selected by POSC   POSC epicentre 3.0 current
API A 10 digit well identification number assigned by the appropriate regulatory body as prescribed by the American Petroleum Institute D-9 Committee for identifying wells in the United States. The code: state (2) + county (3) + well (5), also includes two more digits to define the wellbore. PIDD POSC epicentre 2.1 current
API 12 digit The full 12 digit identifier that identifies the well and the wellbore, as prescribed by the American Petroleum Institute D-9 Committee for identifying wells in the United States. PIDD POSC epicentre 2.1 current
API 14 digit The full 12 digit identifier as prescribed by the American Petroleum Institute D-9 Committee, with the addition of two digits to define the well completions.   POSC epicentre 2.1 current
CPA The 16 digit well identification number assigned by the appropriate regulatory body as prescribed by the Canadian Petroleum Association for identifying wells in Canada. PIDD POSC epicentre 2.1 current
UWI The Universal Well number that is used widely in Canada.   POSC epicentre 3.0 current
WWN The 12 digit worldwide well numbering system presently maintained by Petroconsultants, and in use outside the United States and Canada.   POSC epicentre 2.1 current
Petroleum Information API A 10 digit well identification number assigned by Petroleum Information as prescribed by the American Petroleum Institute D-9 Committee for identifying wells in the United States. The code also includes two more digits to define the wellbore.   POSC epicentre 2.1 current
Petroleum Information API 12 The full 12 digit identification number assigned by Petroleum Information that identifies the well and the wellbore, as prescribed by the American Petroleum Institute D-9 Committee for identifying wells in the United States.   POSC epicentre 2.1 current
Petroleum Information CPA The 16 digit well identification number assigned by Petroleum Information as prescribed by the Canadian Petroleum Association for identifying wells in Canada.   POSC epicentre 2.1 current
Tobin API A 10 digit well identification number assigned by Tobin as prescribed by the American Petroleum Institute D-9 Committee for identifying wells in the United States. The code also includes two more digits to define the wellbore.   POSC epicentre 2.1 current
Tobin API 12 The full 12 digit identification assigned by Tobin that identifies the well and the wellbore, as prescribed by the American Petroleum Institute D-9 Committee for identifying wells in the United States.   POSC epicentre 2.1 current
Dwights API A 10 digit well identification number assigned by Dwights as prescribed by the American Petroleum Institute D-9 Committee for identifying wells in the United States. The code also includes two more digits to define the wellbore.   POSC epicentre 2.1 current
Dwights API 12 The full 12 digit identification assigned by Dwights that identifies the well and the wellbore, as prescribed by the American Petroleum Institute D-9 Committee for identifying wells in the United States.   POSC epicentre 2.1 current
Dwights CPA The 16 digit well identification number assigned by Dwights as prescribed by the Canadian Petroleum Association for identifying wells in Canada.   POSC epicentre 2.1 current
Iris 21 A unique identifier assigned to a well by Petroconsultants.   POSC epicentre 2.1 current
NPD A seven item name described by the Norwegian Petroleum Directorate: quandrant number, block number, type identification, number, well histroy and configuration, well history, and well track number. Geostandard POSC epicentre 2.1 current
DTI A well name defined by the Department of Trade and Industry of the UK which consists of a concatenation of codes for country, quadrant, block, block suffix, platform design, drilling sequence number and well suffix.   POSC epicentre 2.1 current
local field A local name given to a well or wellbore that is used only within a given field. This name is not intended to be unique or descriptive outside the given field.   POSC epicentre 2.1 current

naming_system

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identifier description source _reference source version status
short name A shortened verrsion of another name (usually of a local field or project name).   POSC epicentre 2.1 current
internal identifier An internal name assigned to a well for database administration.   POSC epicentre 3.0 current
project name An internal name assigned to a well, usually during the planning stages. This identifier is generally replaced by another primary identifier when drilling. It can also be the name of a project team.   POSC epicentre 2.1 current
lease name A well name usually associated with the lease or block, the leaseholder, or other entity associated with the lease.   POSC epicentre 2.1 current
primary key A name that is used in some database as a primary key.   POSC epicentre 2.1 current
two digit API The last two digits of the API well number, which is used to distinguish sidetracks and other wellbores within the same well.   POSC epicentre 2.1 current
sequence A sequence, alphanumeric or numeric, that has no meaning beyond distinguishing different wellbores.   POSC epicentre 2.1 current
arbitrary Arbitrary character strings.   POSC epicentre 2.1 current
employee identifier An employer assigned identifier for an employee.   POSC epicentre 2.1 current
nickname A casual and informal name for a person.   POSC epicentre 2.1 current
common name A common name by which a person, company, or other entity is known.   POSC epicentre 2.1 current
full name The complete and formal name of a person or organization. The full name of a person need not fit any pre-defined pattern, but is considered by the individual to be his/her formal name.   POSC epicentre 2.1 current
trademark name A name that is formally registered, but is not necessarily the full name of a company. An example would be POSC.   POSC epicentre 2.1 current
group A name given to a group or a consortium for the purposes of identification. For example, CAGC represented a consortium of companies that would bid on OSC blocks. This is a more formal name than umbrella name.   POSC epicentre 2.1 current
umbrella name A name that is used to describe several companies or, usually, divisions of a company, so that they may be referred to generically rather than as individual divisions.   POSC epicentre 2.1 current
NYSE symbol The name defined for use by the New York Stock Exchange.   POSC epicentre 2.1 current
D-U-N-S Number Special nine-digit number assigned by Dun and Bradstreet to a business.   POSC epicentre 2.1 current
acronym Abbreviations that are used for a formal name for a business associate. This is often used for government agencies, such as BLM, MMS, DOI. However, it may also be used for internal company divisions. When the acronym is formally registered, the kind, trademark name, should be used.   POSC epicentre 2.1 current
US Social Security number A nine digit number assigned to individual by the US government to control references to financial relationships with the US government.   POSC epicentre 2.1 current
EPSG preferred name The name identifier by the European Petroleum Surveyors Group (EPSG) as the preferred name for the geodeticobjects. When an alternate name exists, the preferred name is generally a shortened, but commonly used name.   POSC epicentre 2.1 current

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identifier description source _reference source version status
EPSG alternate name The name identified by the European Petroleum Surveyors Group (EPSG) as an alternate name for the geodetic objects. It is generally a longer, more descriptive name than the shortened preferred name.   POSC epicentre 2.1 current
EPSG alias The name identified by the European Petroleum Surveyors Group (EPSG) as an alias for the geodetic object. It is generally a name which was used previously and has been superseded.   POSC epicentre 3.0 current
EPSG code The code value which is given to each EPSG object.   POSC epicentre 3.0 current
FIPS code The code value which is given to state plane coordinate systems. The codes are maintained by the Federal Information Processing Standard.   POSC epicentre 3.0 current
USGS state plane code The code assigned to US State Plane coordinate systems by the USGS, based on NAD27.   POSC epicentre 2.1 current
code A code of no specific type, generally too short to be descriptive of the natural identifier. This is generally a legacy code which was used in previous databases, although there may be other reasons for having a code.   POSC epicentre 2.1 current
conventional long form The long name of a country, dependency, state, etc. as translated into English. CIA World Factbook found at http://www.odci.gov/cia/publications/factbook/index.html POSC epicentre 2.1 current
conventional short form The short, conventional name of a country, dependency, state, etc. as specified in English. This is the name commonly used to refer to the country. ISO 3166 POSC epicentre 2.1 current
local long form The long form of a country, dependency, state, etc., expressed in the language of the country or transliterated to the Roman character set. CIA World Factbook found at http://www.odci.gov/cia/publications/factbook/index.html POSC epicentre 2.1 current
local short form The short form of a country, dependency, state, etc. as referred to locally, expressed in the language of the country or transliterated to the Roman character set. CIA World Factbook found at http://www.odci.gov/cia/publications/factbook/index.html POSC epicentre 2.1 current
ISO 2 character code The two letter acronym of a country, dependency, state, etc. as specified by the International Standards Organization. ISO 3166 POSC epicentre 3.0 current
ISO 2 digit code Deprecated. Use ISO 2 character code. ISO 3166 POSC epicentre 3.0 deprecated
ISO 3 character code The three letter acronym of a country, dependency, state, etc. as specified by the International Standards Organization. ISO 3166 POSC epicentre 3.0 current
ISO 3 digit code Deprecated. Use ISO 3 character code. ISO 3166 POSC epicentre 3.0 deprecated
ISO numeric code The three digit acronym of a country, dependency, state, etc. as specified by the International Standards Organization. ISO 3166 POSC epicentre 2.1 current
FIPS 10-4 code The two letter acronym of a country, dependency, state, etc. as specified by the US National Institute of Standards and Technology. CIA World Factbook found at http://www.odci.gov/cia/publications/factbook/index.html POSC epicentre 3.0 current
US digraph Deprecated. Use FIPS 10-4 code. World Factbook 94 POSC epicentre 3.0 deprecated
US state code The two letter acronym of a state, etc. as specified by the US National Institute of Standards and Technology.   POSC epicentre 2.2 current
former name A name by which a country, dependency, state, etc. was previously known.   POSC epicentre 2.1 current
former code A code by which a country, dependency, state, etc. was previously known.   POSC epicentre 2.1 current

naming_system

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identifier description source _reference source version status
alternate country name A generally common name by which a country is known that is not the same as the short forms. For example, Burma is an alternate country name for Myanmar.   POSC epicentre 2.1 current
EPSG area of use The area of use of a geographic_coordinate_system, a projected_coordinate_system, or a map projection transformation, as defined by the EPSG. For a geographic_coordinate_system, it is the EPSG Area of Use. For the projected_coordinate_system of the map projection transformation, it is the map projection zone, or, if it exists, the map projection zone abbreviation.   POSC epicentre 2.1 current
alternate political name The name of a region, feature, country, state, etc., that, for political reasons, is known by a different name than the primary name. This name is equally correct, but is used in different political contexts.   POSC epicentre 2.1 current
unknown The kind of name is not known.   POSC epicentre 2.1 current
calculation activity Classification of activities that involve calculations or the use of software.   POSC epicentre 2.2.1 provisional
chemical Classification of a substance based on a chemical criterion.   POSC epicentre 2.2 provisional
completion Classifications for well completions.   POSC epicentre 2.2 provisional
documents Classification for document specifications.   POSC epicentre 2.2 provisional
drill bit Classifications of drill bits   POSC epicentre 2.2 provisional
feature contact Classification of contacts between boundaries: either solid or fluid.   POSC epicentre 2.2 provisional
lithostratigraphic classification The organization of rock strata into units on the basis of their lithologic character.   POSC epicentre 2.2 provisional
materials Systems related to the classification of activities, methods, processes, schemes, etc. for materials.   POSC epicentre 2.2.3 current
measurement activity Classification of activities that obtains measurements of quantities or properties.   POSC epicentre 2.2.1 provisional
sedimentary rock Classifications for sedimentary rocks.   POSC epicentre 2.2 provisional
reserves Classifications of reserves in a reservoir.   POSC epicentre 2.2 provisional
sedimentary petrography Description and classification of sedimentary rocks   POSC epicentre 2.2 provisional
seismic analysis Classification of events on seismic data. Generally, but not always, applicable to seismic interpretation.   POSC epicentre 2.2 provisional
well facility activity Classification of activities related to wells and well facilities.   POSC epicentre 2.2.2 current
well facility Classification that is appropriate for wells, wellbores, and/or completions.   POSC epicentre 2.2 provisional
well classification Classification system for wells.   POSC epicentre 2.2 provisional

naming_system

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identifier description source _reference source version status
wellbore classification Classification system for wellbores.   POSC epicentre 2.2 provisional
well log traces Classifications for well log traces.   POSC epicentre 2.2 provisional
POSC completion fluid type The type of fluid being produced from a well completion.   POSC epicentre 2.2 provisional
POSC proved reserves The classification of proved reserves in a reservoir.   POSC epicentre 2.2 provisional
POSC unproved reserves The classification of unproved reserves in a reservoir.   POSC epicentre 2.2 provisional
POSC well status Deprecated. Use POSC well facility status.   POSC epicentre 2.2.3 deprecated
POSC well outcome A classification of a prospective well based on the outcome. Examples are discovery, dry hole.   POSC epicentre 2.2 provisional
POSC well purpose Deprecated. Use POSC well facility purpose   POSC epicentre 2.2.3 deprecated
POSC wellbore status Deprecated. Use POSC well facility status.   POSC epicentre 2.2.3 deprecated
POSC wellbore purpose Deprecated. Use POSC well facility purpose   POSC epicentre 2.2.3 deprecated
POSC well log trace classes Standard well log trace classes as specified by POSC.   POSC epicentre 2.2.3 deprecated
POSC well log acquisition type Intended to describe the way in which the well log traces were acquired. For example, logging while drilling, wireline, etc.   POSC epicentre 2.2 provisional
POSC/Caesar Equipment, material, and facility classes as developed by the POSC/Caesar project.   POSC epicentre 2.2 current
WIME 1.0 Classification of activities as produced by the WIME project: Well Information Mapping into Epicentre. This is the classes from the 1.0 version of WIME.   POSC epicentre 2.2.2 current
API drilling fluid A classification system for drilling fluids (muds) as defined by the API.   POSC epicentre 2.2 current
biostratigraphic unit The unit names for organization of strata into groups based on their fossil content   POSC epicentre 2.2 provisional
boundary class The various kinds of boundary relationships that occur at feature boundaries.   POSC epicentre 2.2 provisional
carbonate grain type Classification of carbonate grains based on generic properties.   POSC epicentre 2.1 current
carbonate texture Dunham Classification of carbonate rock texture based on grain size and structural criteria. Originally proposed by Dunham.   POSC epicentre 2.1 current
carbonate type Folk Classification of carbonate rock texture based on grain type and matrix. Originally proposed by Folk.   POSC epicentre 2.1 current

naming_system

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identifier description source _reference source version status
chemical classification A classification of a substance based on a chemical criterion.   POSC epicentre 2.1 current
chronostratigraphic unit The unit names for organization of rock strata into groups on the basis of their age or time of origin.   POSC epicentre 2.2 provisional
coal maceral group A classification of organic matter, primarily in coals, but also in rocks. The main classes are exinite (or liptinite), vitrinite, and inertinite.   POSC epicentre 2.1 current
coated grain microfabric The classification of the microfabric structure of the coats of coated carbonate grains (ooids, pisoids, and oncoids).   POSC epicentre 2.1 current
data analysis activity An activity that analyzes data by curve fitting, clustering, grouping, displaying, etc.   POSC epicentre 2.2.3 current
degree of rounding A classification of the weathering of sedimentary grains based on their rounding. It is usually determined by comparison with a printed chart.   POSC epicentre 2.1 current
degree of sorting A classification of sedimentary rocks based on the degree of sorting, of which the number of size classes contained in the predominant (80%) grain sizes is determined.   POSC epicentre 2.1 current
drill pipe upset A classification of drill pipe based on the upset. Upset drill pipe has an increased wall thickness and diameter to compensate for cutting the threads.   POSC epicentre 2.1 current
fossil type A classification for fossils.   POSC epicentre 2.1 current
frequency range Classification of elastic waves based on their frequency range.   POSC epicentre 2.1 current
grain size A classification system of sedimentary materials by size of the individual grains.   POSC epicentre 2.1 current
iadc bearing and gauge A classification of the roller bearing type and gauge protected characteristic of a drill bit, as originally defined by the iadc.   POSC epicentre 2.1 current
iadc body material A classification of a drill bit based on its body material, as originally defined by the iadc.   POSC epicentre 2.1 current
iadc body style A classification of the body style of a drill bit.   POSC epicentre 2.1 current
iadc cutter density A classification of a drill bit based on its cutter material and the density of the cutters, as originally defined by the iadc.   POSC epicentre 2.1 current
iadc cutter size A classification of drill bits based on the size of the cutters, as originally defined by the iadc.   POSC epicentre 2.1 current
iadc cutting structure A classification of the cutting structure of a drill bit, as originally defined by the iadc.   POSC epicentre 2.1 current
iadc cutting structure series A classification of a drill bit bassed on the tooth classification and the formation characteristic, as originally defined by the iadc.   POSC epicentre 2.1 current
iadc dull characteristic A classification of a drill bit based on its reason for being declared inoperable, as originally defined by the iadc.   POSC epicentre 2.1 current
iadc feature available A classification of a drill bit based on special characteristics, as originally defined by the iadc.   POSC epicentre 2.1 current

naming_system

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identifier description source _reference source version status
iadc wear location A classification characteristic describing where the drill bit is worn, as originally defined by the iadc.   POSC epicentre 2.1 current
iadc wear or condition scale A classification of the degree of wear on a drill bit bearing, as originally defined by the iadc.   POSC epicentre 2.1 current
iadc wear scale A classification of the degree of wear on a drill bit tooth, insert, or cutter, as originally defined by the iadc.   POSC epicentre 2.1 current
injected materials Materials which are injected into subsurface reservoirs.   POSC epicentre 2.1 current
lithostratigraphic unit The lithologic unit type (formation, bed, etc.) to which the rock classifications are referring.   POSC epicentre 2.2 provisional
micrite grain size Classification of the crystalline carbonate, micrite (limestone fine grained fabric), based on the crystal size.   POSC epicentre 2.1 current
mineral class A classification of minerals based on their general composition. For example, a chloride would be a mineral class, and halite would be a mineral type.   POSC epicentre 2.1 current
mineral type A classification of minerals based on their specific characteristics. Compare with mineral class. For example, a chloride would be a mineral class, and halite would be a mineral type.   POSC epicentre 3.0 current
physical state A classification of a material based on its being a solid, a liquid, or a gas.   POSC epicentre 2.1 current
positioning sensor A classification of positioning sensors based on the types of measurements it makes.   POSC epicentre 2.1 current
recommended additive system The drilling fluid systems for which a particular drilling fluid additive is recommended for use.   POSC epicentre 2.2 current
reflection configuration A classification of shape and distribution of seismic reflections.   POSC epicentre 2.1 current
satellite system A classification of a satellite positioning system.   POSC epicentre 2.1 current
POSC sedimentary material A classification of sedimentary rocks based on their materials. The three end materials are sand (clastic, sand size), silt or clay (clastic, smaller grained), and limestone or dolomite (carbonate materials).   POSC epicentre 2.1 current
seismic streamer section A classification of a section of a seismic streamer based on the type and/or purpose of the equipment in that section.   POSC epicentre 2.1 current
seismic array pattern Patterns of seismic sources to be fired simultaneously, or of seismic geophones connected to a single recording channel.   POSC epicentre 2.2 current
sequence stratigraphic unit The unit names for organization of rock strata into groups on the basis of the sedimentary sequence coverage   POSC epicentre 2.2 provisional
stabilizer classification A classification of a stabilizer: a tool placed near the drill bit in the drilling assembly to change the deviation angle of a wellbore by controlling the location of the contact point between the borehole wall and drill collars.   POSC epicentre 2.1 current
standard microfacies A classification of carbonate sediments based on lithology, but with an interpretation of environment. The classification was devised by Wilson in 1975.   POSC epicentre 2.1 current
van Krevelen A classification of organic matter in rocks.   POSC epicentre 2.1 current

naming_system

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identifier description source _reference source version status
waveform position A classification of position on a seismic waveform.   POSC epicentre 2.1 current
Schlumberger Well Services Well log trace names as used by Schlumberger Well Services.   POSC epicentre 2.2 current
Halliburton Logging Services Well log trace names as used by Halliburton Logging Services   POSC epicentre 2.2 current
Atlas Wireline Services Well log trace names as used by Atlas Wireline Services.   POSC epicentre 2.2 current
BPB Wireline Services Well log trace names as used by BPB Wireline Services.   POSC epicentre 2.2 current
Numar Well log trace names as used by Numar.   POSC epicentre 2.2 current
Anadrill Schlumberger Logging While Drilling trace names used by Anadrill.   POSC epicentre 2.2 current
Baker Hughes Inteq Logging While Drilling trace names used by Inteq.   POSC epicentre 2.2 current
Halliburton MWD Logging While Drilling trace names used by Halliburton.   POSC epicentre 2.2 current
Sperry-Sun Logging While Drilling trace names used by Sperry-Sun.   POSC epicentre 2.2 current
mud additive Deprecated in 2.2. Use drilling fluid additive.   POSC epicentre 2.2 deprecated

naming_system

identifier entity _constraint parent description source _reference source version status
  ref _entity .identifier naming _system .identifier       ref _version .identifier  
EPSG name aliasable_technical_reference   The unique, long name developed by the EPSG for referring to geodetic objects. This is generally located in column 2 of the EPSG tables. EPSG web site: http://www.petroconsultants.com/products/geodetic.html POSC epicentre 3.0 current
EPSG variant name coordinate_transformation   Where more than one transformation exists between coordinate systems, a variant is added to characterize which of the transformations this one is. The variant is the additional part to determine the uniqueness of the transformation. It is in Column 5 of the Coordinate transformation table in v5.0 of the EPSG release. EPSG web site: http://www.petroconsultants.com/products/geodetic.html POSC epicentre 3.0 current
POSC contract status contract   These are values selected by POSC to describe in a general sense, the status of a contract or agreement.   POSC epicentre 3.0 current
POSC document content document_specification   Classification of a document by its content. Similar to the concept of a keyword.   POSC epicentre 3.0 current
POSC document life cycle document_specification   Classification of a document specification by the life cycle information it contains. For example, a document relating to a planned seismic survey would be classed as plan, while a document relating to a survey that has occurred would be actual.   POSC epicentre 3.0 current
POSC document security document_specification   Classification of a document specification according to its accessibility both within the business entity and between business entities.   POSC epicentre 3.0 current
POSC mineral agreement contract   Classification of a mineral agreement based on the type of govenrnmental body with which the agreement is made.   POSC epicentre 3.0 current
POSC structural feature geologic_feature   The classification of structural features of geologic objects.   POSC epicentre 3.0 current
POSC stratigraphic feature earth_feature   The classification of solid, generally subsurface, geologic bodies. The classification is based on some observation of the stratigraphy.   POSC epicentre 3.0 current
POSC geologic boundary feature_boundary   The classification of geologic boundary between two geologic features   POSC epicentre 3.0 current
SDTS geographic_feature   A classification of geographic objects, such as trees, rivers, airports, roads, that was developed in the Spatial Data Transfer Standard. It may be supplemented with values that are not covered in the standard. http://mcmcweb.er.usgs.gov/sdts/standard.html POSC epicentre 3.0 current
POSC seismic location earth_surface_feature   Seismic related features that are mappable on the surface of the earth, or within a well. This is meant to include features such as line geometries, binsets, VSP locations, points of interest. It is not meant to include interpreted horizons and similar such features.   POSC epicentre 3.0 current
POSC field field   The classification of oil and gas fields based on the method by which its boundaries were determined.   POSC epicentre 3.0 current
POSC certainty level     An expression of certainty using levels from low to high, in which certainty is relative.   POSC epicentre 3.0 current
POSC certainty term     An expression of certainty using terms such as certain, doubtful, likely.   POSC epicentre 3.0 current
Epicentre subtype activity activity   Activities that, in versions previous to 3.0, were subtypes of activity. It also includes extensions to these activities.   POSC epicentre 3.0 current
POSC well log process state well_log_trace   Activities performed on well log traces, as specified by POSC.   POSC epicentre 3.0 current
field life cycle activity   A classification by life cycle of the field: exploration through abandonment.   POSC epicentre 2.1 current
POSC reserves type reserves   The type of reserves that are being referenced. They may be proved and unproved, with subcategories of these two choices.   POSC epicentre 3.0 current

naming_system

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identifier entity _constraint parent description source _reference source version status
POSC seismic indicator seismic_pick   A pattern or other measureable attribute on seismic data that indicates a significant, geologic feature.   POSC epicentre 3.0 current
POSC reflection amplitude seismic_pick   A classification of the gross amplitude of seismic reflections.   POSC epicentre 3.0 current
POSC reflection continuity seismic_pick   A classification of the lateral continuity of seismic reflections.   POSC epicentre 3.0 current
POSC well fluid type facility   Classification of a well, wellbore, or completion based upon the fluid type injected or produced.   POSC epicentre 3.0 current
POSC well fluid direction facility   Classification of a well, wellbore, or completion based on whether it is a producer (outflow), and injector (inflow), or huff n puff (both).   POSC epicentre 2.2 provisional
POSC well structure rule facility   The well is classified by the complexity for which it still considered to be a single well. Questions are: is a sidetrack part of the same well? and if the well is skidded, is it a new well?   POSC epicentre 3.0 current
POSC well facility purpose facility   Classification of a well facility (generally a well or wellbore) by the purpose for which it was initially drilled.   POSC epicentre 2.2.3 current
lahee class facility   Classification of a well facility (generally a well or wellbore) by the purpose for which it was initially drilled.   POSC epicentre 2.2.3 current
POSC well facility status facility   The status of a well or wellbore, or facility related to a well or wellbore. Generally, a completion status will be classified using POSC well completion status.   POSC epicentre 2.2.3 current
POSC well facility outcome facility   The outcome of the drilling of the well or wellbore, or of testing a completion.   POSC epicentre 2.2.3 current
POSC wellbore type wellbore   Classification of a wellbore based on its type, such as initial, re-spud, sidetrack, etc.   POSC epicentre 2.2 current
POSC wellbore trajectory shape wellbore   Classification of a wellbore based on its shape.   POSC epicentre 2.2 current
POSC completion status well_completion   The status of a well completion facility.   POSC epicentre 2.2 current
POSC completion flow direction well_completion   Is the well completion a producer or an injector (or both).   POSC epicentre 2.2 current
POSC completion multiplicity well_completion   Is the well completion completed in a single zone, or more than one zones.   POSC epicentre 2.2 current
POSC perforation status perforation_set   The status of a perforation set in a wellbore.   POSC epicentre 2.1 current
POSC positioning system position_sensor_facility   The classification of a positioning system.   POSC epicentre 3.0 current
POSC positioning device position_sensor_facility   The class of devices that are a part of a positioning system.   POSC epicentre 3.0 current
POSC seismic streamer section streamer_section   A classification of a section of a seismic streamer based on the type and/or purpose of the equipment in that section.   POSC epicentre 3.0 current
POSC positioning measurement type position_sensor_facility   The positioning sensor is classified by the type of measurement that it takes.   POSC epicentre 3.0 current

naming_system

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identifier entity _constraint parent description source _reference source version status
POSC rig type drilling_rig   The classification of drilling rigs.   POSC epicentre 3.0 current
POSC seismic array pattern geophysical_facility   Patterns of seismic sources to be fired simultaneously, or of seismic geophones connected to a single recording channel.   POSC epicentre 3.0 current
POSC seismic source geophysical_facility   The type of seismic source that was used in the experiment.   POSC epicentre 3.0 current
POSC seismograph type geophysical_facility   The type of system used to collect the seismic data, and to control the firing of the shots and recording from the detectors.   POSC epicentre 3.0 current
POSC core type core   The type of core that a particular material is or is taken from.   POSC epicentre 3.0 current
POSC tubular wellbore_tubular   The type of tubular that is in a wellbore.   POSC epicentre 3.0 current
taxonomic class level material   When classifying a fossil or a group of fossils, a class at some level is used. This is the level of the class that is used.   POSC epicentre 3.0 current
chemical element material   The material is being classified by its chemical element.   POSC epicentre 3.0 current
molecule type material   The material is being classified by its molecular nature.   POSC epicentre 3.0 current
drilling fluid material   Classification of drilling fluids (muds). This category is meant to encompass all well operation fluids - not just drilling fluids. The term is used because of industry familiarity.   POSC epicentre 2.2 current
drilling fluid additive material   A classification of additives to drilling fluids based on their functions.   POSC epicentre 2.2 current
fluid characterization material   A classification of produced or injected fluids.   POSC epicentre 2.1 current
hydrocarbon fluid constituents material fluid characterization A classification of hydrocarbon fluids based on their constituent types.   POSC epicentre 2.1 current
reservoir fluid type material fluid characterization A gross characterization of the fluid produced from or injected into a reservoir   POSC epicentre 3.0 current
POSC porosity material   Classification of porosity in rocks.   POSC epicentre 3.0 current
carbonate pores and porous systems material POSC porosity Classification of naturally occuring voids in carbonate rocks, based on shape, size, selectivity with respect to rock fabric and geologic process.   POSC epicentre 2.1 current
pore size material POSC porosity Classification system for the void space in a material based on void size.   POSC epicentre 2.1 current
time of formation material POSC porosity Classification of a material or of its void space based on its age at the time of porosity formation.   POSC epicentre 2.1 current
porosity formation process material POSC porosity Classification of pores (holes) based on geologic processes affecting it after deposition and burial   POSC epicentre 3.0 current
isotope type material   The particular isotope of a given material.   POSC epicentre 3.0 current

naming_system

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identifier entity _constraint parent description source _reference source version status
POSC state plane zone geodetic_zone   The areas within a state in the United States for which a map projection is appropriate. The areas are generally a list of counties, but may differ for some states.   POSC epicentre 3.0 current

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