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Oil and Gas Glossary
Oil and Gas Glossary

Oil and Gas Glossary



Abandoned well A well permanently closed off when no viable hydrocarbons are discovered or it is depleted and no longer capable of producing profitably. The well is permanently plugged downhole, producing subsurface formations have been isolated and permanently plugged and is basically permanently decommissioned
Abandonment Converting a drilled well to a condition that can be left indefinitely without further attention and will not damage freshwater supplies, potential petroleum reservoirs, or the environment as per Part 5 of the Drilling and Production Regulation
Acid Gas A natural gas or any other gas mixture containing significant quantities of hydrogen sulfide (H2S), carbon dioxide (CO2), or similar contaminants
Activity An activity includes Wells, Pipelines, Facilities, Roads, Geophysical Programs, Associated Oil & Gas Activities, NEB Related Ancillaries, NEB Pipeline Rights of Way, NEB Road Rights of Way, Short Term Water Use and Changes In and About a Stream. OGAA Activities include Wells, Roads, Facilities, Pipelines, Geophysical Programs. Related Activities include AOGA (Associated Oil and Gas Activities), Short Term Water Use and Changes in and about a Stream. NEB Activities include NEB Roads, NEB Pipeline Rights of Way, and NEB Related Ancillaries.
Administration boundaries Administration boundaries established through consultation agreements guide consultation for each First Nations community. Where there is no agreement in place, the boundaries are guided by the Provincial Consultation Boundaries.
Agricultural Land Reserve (ALR) A provincial zone where agriculture is recognized as the priority use. Farming is encouraged and non-agricultural uses are controlled.
Agricultural Land Commission (ALC) The B.C. provincial agency responsible for the administration of the ALR.
Aggregate operations The excavation of clay, gravel, rock, sand or soil used in the construction or maintenance of oil and gas infrastructure, but not sourced from a borrow pit. Aggregate operations are a mining activity to which the Mines Act applies. Oil and Gas Aggregate Operation are defined as the excavation or quarrying of aggregate that: produces material solely for the construction and maintenance of oil and gas infrastructure; is not located within a construction corridor; does not produce materials for sale to or use by any party other than for the permit holder, or the holder of an approval referred to in Section 9 of OGAA, with authorization for its use; does not produce sand for use in hydraulic fracturing; and is subject to the requirements of the Health, Safety, and Reclamation Code for Mines in British Columbia.
ALC-OGC Delegation Agreement A signed agreement between the ALC and the Commission. It issues limited delegated authority to the Commission to authorize non-farm use of agricultural lands for oil and gas activities within the Northern Rockies and Peace River Regional Districts
Amendment An application to add, modify or change a permissioned activity.
Ancillary aquifer The underground layer of water-soaked sand and rock acting as a water source for a well
Anomaly investigation Investigative excavations in follow-up areas of interest / concern identified by inline tool inspection.
Applicant A company or operator is referred to as the applicant prior to and during the application phase while seeking an oil and gas and associated activity permit.
Application A person can apply to the Commission for an oil and gas permit by submitting an application in the form and manner the Commission requires. An application can include one (a single activity) or more activities submitted as a bundle (multiactivity). The application must include specific legal locations and detailed technical information with all other required information for all the activities applied in order for the application to be reviewed and a determination made. Regardless of the number of activities applied for within one application, one permit will be issued.
Application Determination Number (AD) An Application Determination number is assigned to an application upon determination. Only one AD number is assigned per project. Permit holders must reference the original AD number when applying for an amendment
Application Management System (AMS) The Commission’s online system applicants use to submit oil and gas and associated activity applications
Area-based analysis (ABA) A framework for managing the cumulative impacts of oil and gas development
Archaeological impact assessment (AIA) Archaeological field work conducted prior to any development activity
As-built documents Collection of drawings, or other related material that describes the specifications of an asset that has been constructed.
BCGS Maps The name of the complete set of maps and plans illustrating in detail the location and extent of planned activities at an appropriate scale required by applicants
Barrel (bbl) A measure of volume for petroleum products. One barrel is the equivalent of 35 imperial gallons or 42 U.S. gallons or 0.15899 cubic metres (9,702 cubic inches). One cubic metre equals 6.2897 barrels.
Battery site A gas or oil facility with product separation and multiphase delivery point measurement (as defined in the BCOGC Measurement Requirements for Upstream Oil and Gas Operations Guideline) for one or more wells. Drilling & Production Regulation definition: a battery means a system or arrangement of tanks or other surface equipment receiving the effluents of one or more wells prior to delivery to market or other disposition, and may include equipment or devices for separating the effluents into petroleum, natural gas or water and for measurement. Examples include · Single oil well with solution gas flared and oil tanked on site. · Multi-well battery with a test and group separator. · Temporary gas well test unit producing marketable hydrocarbons trucked to a TRD (Treatment, Recovery & Disposal) facility. · Water source well installation for oil and gas drilling, completions, or enhanced recovery production operations.
Best practices The management practices or techniques recognized to be the most effective and practical means to develop an oil and gas resource, while minimizing adverse environmental and other effects.
Biogeoclimatic Ecosystem Classification (BEC) An ecological framework and language for ecosystem management in British Columbia. BEC provides a multi-scale classification framework to describe broad biogeoclimatic zones used for applications such as protected area and land management planning, forest pest risk and wildlife habitat management. The BEC program, managed by the Ministry of Forests, Lands and Natural Resource Operations (FLNRO), is continually being updated and as such, the biogeoclimatic zones, names and spatial distribution may change from time to time. The EPMR references the BEC zones at the time the Regulation was created; however, the names and distribution of the zones have changed since then and the new zones should be used when applying the requirements in the EPMR.
Blowout An uncontrolled flow of gas, oil, or other fluids from a well.
Blowout preventer (BOP) Equipment installed on the wellhead to prevent the escape of fluids under pressure from the wellbore during drilling, completion, or workover operations. The BOP stack incorporates different sets of hydraulic rams enabling the well to be sealed with or without pipe in the hole, pumping of fluids into the well under pressure, and controlled release of fluids from the well.
Bog Wetland with organic soils and a water table at or near the surface. Soils are predominantly poorly to moderately decomposed sphagnum moss peats. The bog surface is usually unaffected by groundwater and thus waters are generally acid and low in nutrients. Bogs are usually carpeted by sphagnum mosses and ericaceous shrubs. They may be treed or treeless. Bogs with an open growth of scrubby trees are commonly referred to as muskeg.
Bore Trenchless stream crossing method by which a hole is drilled horizontally from bell hole to bell hole (with or without casing) to allow the installation of a pipeline
Borehole The wellbore; the hole made by drilling or boring a well
Borrow pit An area where clay, gravel, rock, sand or soil has been removed/excavated and used for the construction of oil and gas infrastructure.
Bottom hole assembly The lower portion of the drillstring, consisting of (from the bottom up in a vertical well) the bit, bit sub, a mud motor (in certain cases), stabilizers, drill collars, heavy-weight drillpipe, jarring devices (“jars”) and crossovers for various threadforms. The bottomhole assembly must provide force for the bit to break the rock (weight on bit), survive a hostile mechanical environment and provide the driller with directional control of the well.
Bottom hole pressure The pressure in a well at the bottom of the hole, usually measured in pounds per square inch (psi).
Butane (C4H10) An organic compound found in natural gas. Reported volumes may contain some propane or pentanes plus.
CSA Z662 CSA Z662 is the standard developed and maintained by the Canadian Standards Association covering the design, construction, operation and maintenance of oil and gas industry pipeline systems conveying liquid hydrocarbons, oilfield water and/or steam, carbon dioxide, or gas. It is a legal requirement for operators to meet this standard for pipelines operating under OGAA in B.C
Casing Pipe or tubing of appropriate material, diameter and weight used to support the sides of a well hole and prevent the walls from caving, to prevent loss of drilling mud into porous formations, or to prevent fluid from entering or leaving the well.
CAS number A unique identifier for chemical substances. Chemical Abstracts Service (CAS) is a division of the American Chemical Society responsible for the administration, quality assurance and maintenance of the CAS registry. A CAS Number itself has no inherent chemical significance but provides an unambiguous way to identify a chemical substance or molecular structure when there are many possible systematic, generic, proprietary or trivial names.
Cavitation Creation of a cavity around the wellbore in a coal formation generally using high pressure water jets to increase the area of the coal exposed to the wellbore
Cementing Permanently securing the casing to the wellbore or plugging and sealing the wellbore with cement.
Cement plug A plug of cement slurry placed in the wellbore to seal the well.
Certificate of restoration (COR) A document issued by the Commission certifying abandoned well site has been restored to meet regulatory requirements.
Clean snow Snow free of mineral soil, silt, coarse woody debris, or deleterious substances. When snow is bladed for snowfill construction it is not uncommon for small amounts of grass and other vegetative matter, which may have fallen on the snowpack as it accumulated, are in the gathered material. Grass is often present as it extends well up into the snowpack and may be cut off by the cat blade
Clearspan bridge A channel spanning structure requiring no in-stream support abutments, footings or pilings. Clearspan structures include native timber bridges and fabricated wood, metal and concrete construction mediums.
Closed bottom structure A tunneled drainage structure for the passage of water. Typically constructed of metal or concrete and may be box or cylindrical in shape. Closed bottom structures involve in-stream disturbance of stream channel bed and/or banks
Coalbed gas (CBG) The natural gas found in most coal deposits. It is formed during coalification, a process that converts deposits of plant material into coal. It is also referred to as coalbed methane (CBM) or natural gas in coal (NGC).
Competent Proven qualified, trained, and experienced to perform the required duties
Completed well A well with the necessary work done to enable production
Completion The process of finishing a well to produce gas or oil.
Compressor A machine used to boost natural gas pressure to move it through pipelines or other facilities.
Compressor dehydrator A facility that includes both natural gas compression equipment and dehydration equipment for one or more wells.
Compressor station A facility that includes natural gas compression equipment for one or more wells. This does not include booster compressors for single wells, or for well pads with more than one well.
Condensate A mixture mainly of pentanes and heavier hydrocarbons (C5+) that may be contaminated with Sulphur compounds. It is recovered at a well or facility from an underground reservoir and may be gaseous in its virgin reservoir state but is liquid at the conditions under which its volume is measured.
Construction corridor An additional mapped area and shown spatially around the application area of the proposed activities that allows a permit holder some flexibility in the movement, placement and construction of permitted oil and gas activity. Using this approach can reduce the need for permit amendments, subject to the terms and conditions of the permit. The width of the construction corridor is left to the discretion of the applicant. A construction corridor on a construction plan should include the proposed location of proposed activities being applied for.
Construction plan A plan required for all oil and gas activity. The plan must include all roads, rights of way, public utilities, easements, road allowances and places of public concourse located within 60 metres of storage tanks and production equipment, and/or within 80 metres of flare stacks and incinerators. The plan must also show drainages and the proximity to the lease, adjacent surface improvements and surveyed polygons of facilities.
Consultation The exchange of information regarding proposed oil and gas activities between applicants and recipients within the consultation distance. It begins when a recipient receives an Invitation to Consult from an applicant

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