classification_system

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Standard Instance Values

name	kind	description	source	version	status
	ref _classification _system .name		ref _source .name	ref _epicentre _version .name
POSC certainty terms	certainty	An expression of certainty using terms such as certain, doubtful, likely.	POSC	2.2	provisional
POSC certainty levels	certainty	An expression of certainty using levels from low to high, in which certainty is relative.	POSC	2.2	provisional
POSC completion status	completion	The status of a well completion facility.	POSC	2.2	provisional
POSC completion fluid type	completion	The type of fluid being produced from a well completion.	POSC	2.2	provisional
POSC completion flow direction	completion	Is the well completion a producer or an injector (or both).	POSC	2.2	provisional
POSC completion multiplicity	well facility	Is the well completion completed in a single zone, or more than one zones.	POSC	2.2	provisional
POSC document content	documents	Classification of a document specification by its content. Similar to the idea of keywords.	POSC	2.2	provisional
POSC document life cycle	documents	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	2.2	provisional
POSC document security	documents	Classification of a document specification according to its accessibility both within the business entity and between business entities.	POSC	2.2	provisional
POSC mineral agreement	documents	Classification of mineral agreements based on the type of government with whom the agreement is made.	POSC	2.2	provisional
POSC perforation status		The status of a perforation set in a wellbore.	POSC	2.1	current
POSC proved reserves	reserves	The classification of proved reserves in a reservoir.	POSC	2.2	provisional
POSC structural feature		The classification of structural features of geologic objects.	POSC	2.2	provisional
POSC unproved reserves	reserves	The classification of unproved reserves in a reservoir.	POSC	2.2	provisional
POSC well status	well classification	The status of a well.	POSC	2.2	provisional
POSC well fluid type	well classification	Classification of a well based upon the fluid type injected or produced.	POSC	2.2	provisional
POSC well fluid direction	well classification	Classification of a well based on whether it is a producer (outflow), and injector (inflow), or huff n puff (both).	POSC	2.2	provisional
POSC well outcome	well classification	A classification of a prospective well based on the outcome. Examples are discovery, dry hole.	POSC	2.2	provisional
POSC well purpose	well classification	Classification of a well by the purpose for which it was initially drilled.	POSC	2.2	provisional

classification_system

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name	kind	description	source	version	status
POSC wellbore status	wellbore classification	The status (producing, abandoned, etc.) of a wellbore.	POSC	2.2	provisional
POSC wellbore type	wellbore classification	Classification of a wellbore based on its type, such as initial, re-spud, sidetrack, etc.	POSC	2.2	provisional
POSC wellbore trajectory shape	wellbore classification	Classification of a wellbore based on its shape.	POSC	2.2	provisional
POSC wellbore purpose	wellbore classification	Classification of a wellbore by the purpose for which it was drilled.	POSC	2.2	provisional
POSC well log trace classes	well log traces	Standard well log trace classes as specified by POSC.	POSC	2.2	current
POSC well log acquisition type	well log traces	Intended to describe the way in which the well log traces were acquired. For example, logging while drilling, wireline, etc.	POSC	2.2	provisional
POSC well log trace activity	well log traces	Activities performed on well log traces, as specified by POSC.	POSC	2.2.2	provisional
POSC/Caesar		Equipment, material, and facility classes as developed by the POSC/Caesar project.	POSC	2.2	current
WIME 1.0	well activity	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	2.2.2	current
Epicentre subtype activity	well activity	Existing sub-type of Activity entity in Epicentre Logical Model	POSC	2.2.2	current
API drilling fluid	drilling fluid	A classification system for drilling fluids (muds) as defined by the API.	POSC	2.2	current
biostratigraphic unit	sedimentary rock	The unit names for organization of strata into groups based on their fossil content	POSC	2.2	provisional
boundary class	feature contact	The various kinds of boundary relationships that occur at feature boundaries.	POSC	2.2	provisional
carbonate grain type	sedimentary rock	Classification of carbonate grains based on generic properties.	POSC	2.1	current
carbonate pores and porous systems	sedimentary rock	Classification of naturally occuring voids in carbonate rocks, based on shape, size, selectivity with respect to rock fabric and geologic process.	POSC	2.1	current
carbonate texture Dunham	sedimentary rock	Classification of carbonate rock texture based on grain size and structural criteria. Originally proposed by Dunham.	POSC	2.1	current
carbonate type Folk	sedimentary rock	Classification of carbonate rock texture based on grain type and matrix. Originally proposed by Folk.	POSC	2.1	current
chemical classification	chemical	A classification of a substance based on a chemical criterion.	POSC	2.1	current
chronostratigraphic unit	sedimentary rock	The unit names for organization of rock strata into groups on the basis of their age or time of origin.	POSC	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	2.1	current

classification_system

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name	kind	description	source	version	status
coated grain microfabric	sedimentary rock	The classification of the microfabric structure of the coats of coated carbonate grains (ooids, pisoids, and oncoids).	POSC	2.1	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	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	2.1	current
directional survey analysis method	calculation activity	Methods (not necessarily software) used to calculated a wellbore path from directional survey data.	POSC	2.2.1	provisional
drilling fluid additive	drilling fluid	A classification of additives to drilling fluids based on their functions.	POSC	2.2	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	2.1	current
field life cycle		A classification by life cycle of the field: exploration through abandonment.	POSC	2.1	current
fluid characterization		A classification of produced or injected fluids.	POSC	2.1	current
fossil type		A classification for fossils.	POSC	2.1	current
frequency range		Classification of elastic waves based on their frequency range.	POSC	2.1	current
geologic process		Classification of pores (holes) based on geologic processes affecting it after deposition and burial.	POSC	2.1	current
grain size		A classification system of sedimentary materials by size of the individual grains.	POSC	2.1	current
iadc bearing and gauge	drill bit	A classification of the roller bearing type and gauge protected characteristic of a drill bit, as originally defined by the iadc.	POSC	2.1	current
iadc body material	drill bit	A classification of a drill bit based on its body material, as originally defined by the iadc.	POSC	2.1	current
iadc body style	drill bit	A classification of the body style of a drill bit.	POSC	2.1	current
iadc cutter density	drill bit	A classification of a drill bit based on its cutter material and the density of the cutters, as originally defined by the iadc.	POSC	2.1	current
iadc cutter size	drill bit	A classification of drill bits based on the size of the cutters, as originally defined by the iadc.	POSC	2.1	current
iadc cutting structure	drill bit	A classification of the cutting structure of a drill bit, as originally defined by the iadc.	POSC	2.1	current
iadc cutting structure series	drill bit	A classification of a drill bit bassed on the tooth classification and the formation characteristic, as originally defined by the iadc.	POSC	2.1	current
iadc dull characteristic	drill bit	A classification of a drill bit based on its reason for being declared inoperable, as originally defined by the iadc.	POSC	2.1	current

classification_system

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name	kind	description	source	version	status
iadc feature available	drill bit	A classification of a drill bit based on special characteristics, as originally defined by the iadc.	POSC	2.1	current
iadc wear location	drill bit	A classification characteristic describing where the drill bit is worn, as originally defined by the iadc.	POSC	2.1	current
iadc wear or condition scale	drill bit	A classification of the degree of wear on a drill bit bearing, as originally defined by the iadc.	POSC	2.1	current
iadc wear scale	drill bit	A classification of the degree of wear on a drill bit tooth, insert, or cutter, as originally defined by the iadc.	POSC	2.1	current
injected materials		Materials which are injected into subsurface reservoirs.	POSC	2.1	current
lahee class	well classification	A classification of wells.	POSC	2.1	current
lithostratigraphic unit	sedimentary rock	The lithologic unit type (formation, bed, etc.) to which the rock classifications are referring.	POSC	2.2	provisional
micrite grain size	sedimentary rock	Classification of the crystalline carbonate, micrite (limestone fine grained fabric), based on the crystal size.	POSC	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	2.1	current
physical state		A classification of a material based on its being a solid, a liquid, or a gas.	POSC	2.1	current
pore size		Classification system for the void space in a material based on void size.	POSC	2.1	current
positioning sensor		A classification of positioning sensors based on the types of measurements it makes.	POSC	2.1	current
recommended additive system		The drilling fluid systems for which a particular drilling fluid additive is recommended for use.	POSC	2.2	current
reflection configuration	seismic analysis	A classification of shape and distribution of seismic reflections.	POSC	2.1	current
reflection continuity	seismic analysis	A classification of the lateral continuity of seismic reflections.	POSC	2.1	current
reflection gross amplitude	seismic analysis	A classification of the gross amplitude of seismic reflections.	POSC	2.1	current
satellite system		A classification of a satellite positioning system.	POSC	2.1	current
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	2.1	current
seismic indicator	seismic analysis	A pattern or other measureable attribute on seismic data that indicates a significant, geologic feature.	POSC	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	2.1	current

classification_system

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name	kind	description	source	version	status
seismic array pattern		Patterns of seismic sources to be fired simultaneously, or of seismic geophones connected to a single recording channel.	POSC	2.2	current
sequence stratigraphic unit	sedimentary rock	The unit names for organization of rock strata into groups on the basis of the sedimentary sequence coverage	POSC	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	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	2.1	current
time of formation		Classification of a material or of its void space based on its age.	POSC	2.1	current
van Krevelen		A classification of organic matter in rocks.	POSC	2.1	current
waveform position	seismic analysis	A classification of position on a seismic waveform.	POSC	2.1	current
well log calculation	calculation activity	Methods (not necessarily software) used in the calculation of properties from well logs.	POSC	2.2.1	provisional
well log property measurement	measurement activity	Activities that are performed to measure properties used for well log calculations.	POSC	2.2.1	provisional
Schlumberger Well Services	well log traces	Well log trace names as used by Schlumberger Well Services.	POSC	2.2	current
Halliburton Logging Services	well log traces	Well log trace names as used by Halliburton Logging Services	POSC	2.2	current
Atlas Wireline Services	well log traces	Well log trace names as used by Atlas Wireline Services.	POSC	2.2	current
BPB Wireline Services	well log traces	Well log trace names as used by BPB Wireline Services.	POSC	2.2	current
Numar	well log traces	Well log trace names as used by Numar.	POSC	2.2	current
Anadrill Schlumberger	well log traces	Logging While Drilling trace names used by Anadrill.	POSC	2.2	current
Baker Hughes Inteq	well log traces	Logging While Drilling trace names used by Inteq.	POSC	2.2	current
Halliburton MWD	well log traces	Logging While Drilling trace names used by Halliburton.	POSC	2.2	current
Sperry-Sun	well log traces	Logging While Drilling trace names used by Sperry-Sun.	POSC	2.2	current
mud additive		Deprecated in 2.2. Use drilling fluid additive.	POSC	2.2	deprecated

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