POSC Specifications
Version 2.2 		Epicentre Standard Values
facility_class

facility_class

Changes Document
 Standard Instance Values

Go to POSC/Caesar facility_class values.

name classification _system description source _reference source version status
  classification _system .name   ref _source _reference .ref _source .name ref _source .name ref _epicentre _version .name  
oil POSC well fluid type The well is classified as an oil well.   POSC 2.2 provisional
gas POSC well fluid type The well is classified as a gas well, producing or injecting a hydrogen gas.   POSC 2.2 provisional
brine POSC well fluid type The well is classified as producing or injecting salt water.   POSC 2.2 provisional
fresh water POSC well fluid type The well is classified as producing fresh water that is capable of use for drinking or crop irrigation.   POSC 2.2 provisional
water POSC well fluid type The well is classified as a water well without distinguishing between brine or fresh water.   POSC 2.2 provisional
oil-gas POSC well fluid type The well is classified as producing both gas and oil.   POSC 2.2 provisional
oil-water POSC well fluid type The well is classified as producing both oil and water.   POSC 2.2 provisional
gas-water POSC well fluid type The well is classified as producing both gas and water.   POSC 2.2 provisional
other POSC well fluid type The well is not classified as any of the other fluid types. This would include as examples helium, carbon dioxide, fluid samples in monitoring wells, etc.   POSC 2.2 provisional
injector POSC well fluid direction Is the well injecting fluids into the subsurface.   POSC 2.2 provisional
producer POSC well fluid direction Is the well producing fluids from the subsurface.   POSC 2.2 provisional
huff-n-puff POSC well fluid direction The well alternately injects (usually a steam or hot fluid) and produces.   POSC 2.2 provisional
wildcat POSC well purpose A exploratory well drilled in an unproved area to test for a new field, a new pay, a deeper reservoir, or a shallower reservoir. Also known as an exploration well. PIDD POSC 2.2 provisional
new-field wildcat POSC well purpose An exploratory well drilled to search for an occurrence of hydrocarbon at a relatively considerable distance outside the limits of known pools of hydrocarbon, as those limits were understood at the time. Manual of O and G Terms POSC 2.2 provisional
new-pool wildcat POSC well purpose An exploratory well drilled to search for additional pools of hydrocarbon in close proximity and at the same stratigraphic level as known pools.   POSC 2.2 provisional
shallower-pool wildcat POSC well purpose An exploratory well drilled to search for additional pools of hydrocarbon in close proximity, but at a shallower stratigraphic levels than the known pools.   POSC 2.2 provisional
deeper-pool wildcat POSC well purpose An exploratory well drilled to search for additional pools of hydrocarbon in close proximity to known pools of hydrocarbon but at a deeper stratigraphic levels than the known pools.   POSC 2.2 provisional
outpost wildcat POSC well purpose An exploratory well drilled to search for additional pools of hydrocarbon or to extend the limits of a known pool by searching in the same interval at some distance from a known pool. Manual of O and G Terms POSC 2.2 provisional
stratigraphic test POSC well purpose A research well drilled for the purpose of gathering geologic information on the stratigraphy of an area. A C.O.S.T. well would be included in this category. Manual of O and G Terms POSC 2.2 provisional

facility_class

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name classification _system description source _reference source version status
appraisal POSC well purpose A well drilled into a formation shown to be potentially productive of oil or gas by an earlier well for the purpose of obtaining more information about the reservoir. Also known as a delineation well. Manual of O and G Terms POSC 2.2 provisional
exploratory appraisal POSC well purpose An appraisal well, generally drilled in an area unknown to be part of the reservoir, whose purpose is to determine the extent of the reservoir.   POSC 2.2 provisional
confirmation appraisal POSC well purpose An appraisal well, generall drilled in a location interpreted to be in the reservoir, whose purpose is to confirm the interpretation.   POSC 2.2 provisional
development POSC well purpose A well drilled in a zone in an area already proved productive. PIDD POSC 2.2 provisional
infill development POSC well purpose A developmental well drilled to fill in between established wells, usually part of a drilling program to reduce the spacing between wells to increase production. Langenkamp Terms POSC 2.2 provisional
injection POSC well purpose A well that is drilled with the purpose of injecting fluids into a reservoir, usually for enhanced recovery.   POSC 2.2 provisional
general service POSC well purpose A well drilled to provide a service such as subsurface fluid monitoring, waste disposal, fluid storage, and blowout relief. Not necessarily an E & P well.   POSC 2.2 provisional
monitor POSC well purpose A service well drilled to allow continuous or periodic measurement of a property of the subsurface through time.   POSC 2.2 provisional
waste disposal POSC well purpose A service well drilled for the purpose of injection of sewage, industrial waste, or other waste fluids into the subsurface for disposal. Manual of O and G Terms POSC 2.2 provisional
fluid storage POSC well purpose A service well drilled for the purpose of injection of fluids into a reservoir for storage and later withdrawal.   POSC 2.2 provisional
blowout relief POSC well purpose A service well drilled with the specific purpose to provide communication at some point below the surface to another well which is out of control. PIDD POSC 2.2 provisional
borehole re-acquisition POSC well purpose A service well drilled to intersect another well below the surface for the purpose of extending the life of a well whose surface borehole has been lost or damaged.   POSC 2.2 provisional
drilling test POSC well purpose A research well drilled to test the suitablity of a particular type of equipment or drilling practice.   POSC 2.2 provisional
mineral POSC well purpose A non-E&P well drilled for the purpose of locating and/or extracting a mineral from the subsurface, usually through the injection and/or extraction of mineral-bearing fluids.   POSC 2.2 provisional
research POSC well purpose A well drilled with the purpose of obtaining information on the stratigraphy, on drilling practices, for logging tests, or other such purpose. It is not expected to find economic reserves of hydrocarbons.   POSC 2.2 provisional
initial POSC wellbore type The first, original wellbore drilled in a well.   POSC 2.1 current
re-spud POSC wellbore type A new surface wellbore spudded a short distance from an original surface wellbore following the collapse or otherwise failure of this original wellbore.   POSC 2.1 current
remedial sidetrack POSC wellbore type A redrilling of a portion of the wellbore to bypass a blockage of the borehole or otherwise correct a problem in drilling. No change in bottom hole location or target.   POSC 2.1 current
sidetrack POSC wellbore type A new wellbore drilled from an existing wellbore to a new bottom hole location or target. (PIDD 1/25/93 #P0002038) PIDD POSC 2.1 current
re-entry POSC wellbore type A wellbore is re-entered with drilling equipment in order to make it active again. PIDD POSC 2.2 provisional

facility_class

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name classification _system description source _reference source version status
vertical POSC wellbore trajectory shape A wellbore that is nearly vertical with respect to the surface location. PIDD POSC 2.1 current
deviated POSC wellbore trajectory shape A wellbore that significantly departs from vertical with respect to the surface location. PIDD POSC 2.1 current
build and hold POSC wellbore trajectory shape A wellbore configuration where the inclination is increased to some terminal angle of inclination and maintained at that angle to the specified target. PIDD POSC 2.1 current
double kick off POSC wellbore trajectory shape Incorporates two tangential (constant, non-zero inclination) sections. The second of which must be at a higher inclination than the first.   POSC 2.1 current
s shaped POSC wellbore trajectory shape A wellbore drilled with a vertical segment, a deviated segment, and a return toward a vertical segment. PIDD POSC 2.1 current
horizontal POSC wellbore trajectory shape A wellbore whose path deviates from the vertical by at least 75 degrees. PIDD POSC 2.1 current
producing POSC completion flow direction The fluids in the completion are flowing from the surrounding rocks into the wellbore.   POSC 2.2 provisional
injecting POSC completion flow direction The fluids in the completion are flowing into the surrounding rocks from the wellbore.   POSC 2.2 provisional
both POSC completion flow direction The fluids in the completion are alternately flowing from the surrounding rocks into the wellbore and from the wellbore into the surrounding rocks. This is similar to the huff n puff method for a well.   POSC 2.2 provisional
proposed POSC completion status The status of a completion that has been planned, but has not yet been opened to flow.   POSC 2.2 provisional
approved POSC completion status The completion that has been approved by regulatory authorities.   POSC 2.2 provisional
active POSC completion status A completion is open to production or injection, and is actively flowing.   POSC 2.2 provisional
shut-in POSC completion status A completion is open to production or injection, but is not actively flowing. A completion that is shut-in for a short period probably should not have its status changed from open, but no standard is set for what is considered to be a short period.   POSC 2.2 provisional
closed POSC completion status A completion is no longer open for production or injection, and cannot be re-opened without re-completing the interval. There may be plans to re-open the segment.   POSC 2.2 provisional
subsumed POSC completion status The completion interval has been re-perforated or re-completed over a larger interval. The completion status will be subsumed under the status of the larger interval.   POSC 2.2 provisional
suspended POSC completion status The completion interval is not active due to a fixed blockage (such as a bridge plug). The completion may later be activated by removing the blockage.   POSC 2.2 provisional
abandoned POSC completion status The completion interval has been abandoned. There are no further plans to re-open the completion interval.   POSC 2.2 provisional
sold POSC completion status The well completion has been sold.   POSC 2.2 provisional
single POSC completion multiplicity The well or wellbore has a single completion in it.   POSC 2.2 provisional
multiple POSC completion multiplicity The well or wellbore has more than one completion in it.   POSC 2.2 provisional

facility_class

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name classification _system description source _reference source version status
dual POSC completion multiplicity The well or wellbore has two completions in it.   POSC 2.2 provisional
triple POSC completion multiplicity The well or wellbore has three completions in it.   POSC 2.2 provisional
proposed POSC perforation status The status of a perforation that has been planned, but has not yet been opened to flow.   POSC 2.2 provisional
open POSC perforation status A perforation set is open to production or injection, and is actively flowing.   POSC 2.2 provisional
closed POSC perforation status A perforation set is no longer open for production or injection, and cannot be re-opened without re-perforating the interval.   POSC 2.2 provisional
subsumed POSC perforation status The perforation interval has been re-perforated or re-completed over a larger interval. The perforation status will be subsumed under the status of the larger perforation set.   POSC 2.2 provisional
suspended POSC perforation status The perforation interval is not active due to a fixed blockage (such as a bridge plug). The perforations have not been closed permanently and may later be activated by removing the blockage.   POSC 2.2 provisional
wildcat POSC wellbore purpose A exploratory wellbore drilled in an unproved area to test for a new field, a new pay, a deeper reservoir, or a shallower reservoir. Also known as an exploration well. PIDD POSC 2.2 provisional
new-field wildcat POSC wellbore purpose An exploratory wellbore drilled to search for an occurrence of hydrocarbon at a relatively considerable distance outside the limits of known pools of hydrocarbon, as those limits were understood at the time. Manual of O and G Terms POSC 2.2 provisional
new-pool wildcat POSC wellbore purpose An exploratory wellbore drilled to search for additional pools of hydrocarbon in close proximity and at the same stratigraphic level as known pools.   POSC 2.2 provisional
shallower-pool wildcat POSC wellbore purpose An exploratory wellbore drilled to search for additional pools of hydrocarbon in close proximity, but at a shallower stratigraphic levels than the known pools.   POSC 2.2 provisional
deeper-pool wildcat POSC wellbore purpose An exploratory wellbore drilled to search for additional pools of hydrocarbon in close proximity to known pools of hydrocarbon but at a deeper stratigraphic levels than the known pools.   POSC 2.2 provisional
outpost wildcat POSC wellbore purpose An exploratory wellbore drilled to search for additional pools of hydrocarbon or to extend the limits of a known pool by searching in the same interval at some distance from a known pool. Manual of O and G Terms POSC 2.2 provisional
stratigraphic test POSC wellbore purpose A research wellbore drilled for the purpose of gathering geologic information on the stratigraphy of an area. A C.O.S.T. well would be included in this category. Manual of O and G Terms POSC 2.2 provisional
appraisal POSC wellbore purpose A wellbore drilled into a formation shown to be potentially productive of oil or gas by an earlier well for the purpose of obtaining more information about the reservoir. Also known as a delineation wellbore. Manual of O and G Terms POSC 2.2 provisional
exploratory appraisal POSC wellbore purpose An appraisal wellbore, generally drilled in an area unknown to be part of the reservoir, whose purpose is to determine the extent of the reservoir.   POSC 2.2 provisional
confirmation appraisal POSC wellbore purpose An appraisal wellbore, generall drilled in a location interpreted to be in the reservoir, whose purpose is to confirm the interpretation.   POSC 2.2 provisional
development POSC wellbore purpose A wellbore drilled in a zone in an area already proved productive. PIDD POSC 2.2 provisional
infill development POSC wellbore purpose A developmental wellbore drilled to fill in between established wellbores, usually part of a drilling program to reduce the spacing between wellbores to increase production. Langenkamp Terms POSC 2.2 provisional
injection POSC wellbore purpose A wellbore that is drilled with the purpose of injecting fluids into a reservoir, usually for enhanced recovery.   POSC 2.2 provisional

facility_class

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name classification _system description source _reference source version status
general service POSC wellbore purpose A wellbore drilled to provide a service such as subsurface fluid monitoring, waste disposal, fluid storage, and blowout relief. Not necessarily an E & P wellbore.   POSC 2.2 provisional
monitor POSC wellbore purpose A service wellbore drilled to allow continuous or periodic measurement of a property of the subsurface through time.   POSC 2.2 provisional
waste disposal POSC wellbore purpose A service wellbore drilled for the purpose of injection of sewage, industrial waste, or other waste fluids into the subsurface for disposal. Manual of O and G Terms POSC 2.2 provisional
fluid storage POSC wellbore purpose A service wellbore drilled for the purpose of injection of fluids into a reservoir for storage and later withdrawal.   POSC 2.2 provisional
blowout relief POSC wellbore purpose A service wellbore drilled with the specific purpose to provide communication at some point below the surface to another wellbore which is out of control. PIDD POSC 2.2 provisional
borehole re-acquisition POSC wellbore purpose A service wellbore drilled to intersect another wellbore below the surface for the purpose of extending the life of a well whose surface borehole has been lost or damaged.   POSC 2.2 provisional
drilling test POSC wellbore purpose A research wellbore drilled to test the suitablity of a particular type of equipment or drilling practice.   POSC 2.2 provisional
mineral POSC wellbore purpose A non-E&P wellbore drilled for the purpose of locating and/or extracting a mineral from the subsurface, usually through the injection and/or extraction of mineral-bearing fluids.   POSC 2.2 provisional
research POSC wellbore purpose A wellbore drilled with the purpose of obtaining information on the stratigraphy, on drilling practices, for logging tests, or other such purpose. It is not expected to find economic reserves of hydrocarbons.   POSC 2.2 provisional
GPS satellite system Geographic Position System. It measures latitude, longitude, z based on a pseudo-range, carrier phase measurement. The orbit scheme is high altitude, inclined.   POSC 2.1 current
Transit satellite system It measures latitude, longitude, x, y, z, based on a doppler frequency shift. The orbit scheme is low altitude, polar.   POSC 2.1 current
Glonass satellite system It measures latitude, longitude, based on a pseudo-range, carrier phase measurement. The orbit scheme is high altitude, inclined.   POSC 2.1 current
Starfix satellite system It measures latitude, longitude, based on a range measurement. The orbit scheme is geostationary.   POSC 2.1 current
live seismic streamer section A section of the streamer containing active hydrophones.   POSC 2.1 current
dead seismic streamer section A section of the streamer containing inactive geophones, used as a spacer.   POSC 2.1 current
depth controller seismic streamer section A device on the streamer that insures proper towing depth.   POSC 2.1 current
elastic isolators seismic streamer section A section of the streamer that isolates the streamer from shocks from the ship or tail buoy.   POSC 2.1 current
cable compass seismic streamer section A device that indicates the orientation of the streamer.   POSC 2.1 current
tail buoy seismic streamer section A buoy with a radar reflector or other locator device that shows the position of the end of the streamer.   POSC 2.1 current
lead in section seismic streamer section The portion of the streamer from the towing bridle down to the first depth controller.   POSC 2.1 current

facility_class

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name classification _system description source _reference source version status
towing bridle seismic streamer section The harness used to anchor the streamer to the ship.   POSC 2.1 current
horizontal angle positioning sensor A sensor which measures horizontal angle.   POSC 2.1 current
vertical angle positioning sensor A sensor which measures vertical angles.   POSC 2.1 current
azimuth positioning sensor A sensor which measures azimuths.   POSC 2.1 current
length positioning sensor A sensor which measures lengths.   POSC 2.1 current
range positioning sensor A sensor which measures horizontal distances.   POSC 2.1 current
composite range positioning sensor A sensor which measures composite ranges.   POSC 2.1 current
hyperbolic line of position positioning sensor A sensor which measureshyperbolic line of position.   POSC 2.1 current
depth positioning sensor A sensor which measures depths.   POSC 2.1 current
pitch roll heave positioning sensor A sensor which measures pitch, roll, and heave.   POSC 2.1 current
new-field wildcat lahee class An exploratory well drilled to search for an occurrence of hydrocarbon at a relatively considerable distance outside the limits of known pools of hydrocarbon, as those limits were understood at the time. Manual of O and G Terms POSC 2.1 current
new-pool wildcat lahee class An exploratory well drilled to search for additional pools of hydrocarbon in close proximity and at the same stratigraphic level as known pools.   POSC 2.1 current
shallower-pool wildcat lahee class An exploratory well drilled to search for additional pools of hydrocarbon in close proximity, but at a shallower stratigraphic levels than the known pools.   POSC 2.1 current
deeper-pool wildcat lahee class An exploratory well drilled to search for additional pools of hydrocarbon in close proximity to known pools of hydrocarbon but at a deeper stratigraphic levels than the known pools.   POSC 2.1 current
outpost wildcat lahee class An exploratory well drilled to search for additional pools of hydrocarbon or to extend the limits of a known pool by searching in the same interval at some distance from a known pool. Manual of O and G Terms POSC 2.1 current
development lahee class A well drilled in a zone in an area already proved productive. PIDD POSC 2.1 current
stratigraphic test lahee class An exploratory well drilled for the purpose of gathering geologic information on the stratigraphy of an area. Also called core test or C.O.S.T. well. Manual of O and G Terms POSC 2.1 current
service lahee class A well drilled to provide a service such as subsurface fluid monitoring, waste disposal, fluid storage, blowout relief and borehole re-acquisition. Not necessarily an E & P well.   POSC 2.1 current
discovery POSC well outcome The prospective well was a discovery.   POSC 2.2 provisional
dry hole POSC well outcome The prospective well was a dry hole. It was not a discovery, and was abandoned.   POSC 2.2 provisional

facility_class

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name classification _system description source _reference source version status
in-line seismic array pattern The sources or geophones are arranged within the seismic line.   POSC 2.2 current
perpendicular seismic array pattern The sources or geophones a linearly arrayed perpendicular to the seismic line.   POSC 2.2 current
cross seismic array pattern The sources or geophones are partly in-line and partly perpendicular to the seismic line.   POSC 2.2 current
diamond seismic array pattern The sources or geophones form a quadrilateral with the seimsic line running along the diagonal.   POSC 2.2 current
crow's foot seismic array pattern The sources or geophones consist of three lines. One is in-line, and the other two branch off at approximately 60 degrees from the end of the first line.   POSC 2.2 current
x-array seismic array pattern The sources or geophones form two lines, each oblique to the seismic line, and the seismic line forming an axis of symmetry of the x-array.   POSC 2.2 current
odd arm star seismic array pattern There are an odd number of lines or sources and geophones, one being in-line, and the others forming equal angles. For example, a 3 arm star would have the lines at 120 degrees each.   POSC 2.2 current
herringbone seismic array pattern The sources or geophones form many lines, each being oblique at a common angle to the seismic line, but being on opposite sides of the line. The several lines have no points in common.   POSC 2.2 current
rectangular seismic array pattern Several lines of sources or geophones that form a rectangle, with one side parallel to the seismic line.   POSC 2.2 current

facility_class

name classification _system description source _reference source version status
  classification _system .name   ref _source _reference .ref _source .name ref _source .name ref _epicentre _version .name  
proposed POSC well status The status of a well from conception to either regulatory approval or commencement of drilling.   POSC 2.2 provisional
permitted POSC well status A well that has been granted regulatory approval to drill but has not yet been spudded. PIDD POSC 2.2 provisional
drilling POSC well status The status of a well in which drilling operations are ongoing.   POSC 2.2 provisional
drilling suspended POSC well status The status of a well in which drilling operations are suspended temporarily in a manner that allow immediate resumption of activities.   POSC 2.2 provisional
active POSC well status The status of a well that is operating or is capable of being operated.   POSC 2.2 provisional
suspended POSC well status A well whose operations have been suspended temporarily in a manner that allow immediate resumption of activities.   POSC 2.2 provisional
temporarily abandoned POSC well status A well whose operations have been terminated temporarily in a manner that precludes immediate resumption of activities.   POSC 2.2 provisional
abandoned POSC well status The status of a well in which drilling, completion, and production operations have been permanently terminated. PIDD POSC 2.2 provisional
plugged and abandoned POSC well status Also abbreviated P&A. An abandoned well whose wellbores have been plugged in such a way or manner as to prevent the migration of oil, gas, salt water, or other substance from one stratum to another. Manual of O and G Terms POSC 2.2 provisional
proposed POSC wellbore status The status of a wellbore from conception to either regulatory approval or commencement of drilling.   POSC 2.2 provisional
permitted POSC wellbore status A wellbore that has been granted regulatory approval to drill but has not yet been spudded. (PIDD 1/25/93 #P0003884) PIDD POSC 2.2 provisional
drilling POSC wellbore status The status of a wellbore in which drilling operations are ongoing.   POSC 2.2 provisional
drilling suspended POSC wellbore status The status of a wellbore in which drilling operations are suspended temporarily in a manner that allow immediate resumption of activities.   POSC 2.2 provisional
active POSC wellbore status A completed wellbore that has ongoing activity.   POSC 2.2 provisional
suspended POSC wellbore status A wellbore whose operations have been suspended temporarily in a manner that allow immediate resumption of activities.   POSC 2.2 provisional
temporarily abandoned POSC wellbore status A wellbore whose operations have been terminated temporarily in a manner that precludes immediate resumption of activities.   POSC 2.2 provisional
abandoned POSC wellbore status The status of a wellbore in which drilling, completion, and production operations have been permanently terminated. (PIDD #P0000001, modified) PIDD POSC 2.2 provisional
plugged and abandoned POSC wellbore status Also abbreviated P&A. An abandoned well whose wellbores have been plugged in such a way or manner as to prevent the migration of oil, gas, salt water, or other substance from one stratum to another. Manual of O and G Terms POSC 2.2 provisional
delineation POSC wellbore purpose A wellbore drilled outward from a successful wildcat well to determine the extent of the oil find, the boundaries of the productive formation. Langenkamp Terms POSC 2.2 provisional

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