Oil & Gas abbreviations/اختصارات نفت و گاز

Oil & Gas abbreviations

Abandonment: End of production, plug and abandon wells, dismantle and remove all material and equipment

Acidising: Treatment of reservoir with hydrochloric or hydrochloric acid to improve performance

AFC: Approved for construction

AFD: Approved for Design

AFE: Approved for Expenditure

AHV: Anchor Handling Vessel

Alkane: Any of a series of open-chain hydrocarbons having the general formula CnH2n+2, the most abundant of which is methane and butane

Alkane: Any of a series of aliphatic hydrocarbon with the general formula C2H2n such as ethylene, also known as olefins

Alluvial fan: Pattern of sedimentary deposit frequently laid down by streams or rivers which spread out into plains

Annulus: Space between two concentric objects such as between the wellbore and casing

Anoxic: Greatly deficient in oxygen

Anticline: An arch of stratified rock in which the layers bend downward in opposite directions from the crest

API: American Petroleum Institute

* API gravity: A measure of how heavy or light a petroleum liquid is compared to water. API gravity=141.5/(Specific Gravity)-131.5

Aromatics: Relating to an organic compound containing at least one benzene ring (C6 ring) or similar ring-shaped component. Notable for their distinctive, usually fragrant smell

Artificial lift: A process used on oil wells to increase pressure within the reservoir and encourage oil to the surface

Asphalt: Soild petroleum residue, similar to bitumen, tar and pitch

Associated gas: Gas produced as a byproduct of the production of crude oil

Bar: unit of pressure

Bara: bar,absolute pressure

Barg: bar,gauge pressue

Barrel:42 US Gallons

Bbl: Barrel

bbi/d: barrel of oil per day

bbi/MMscf: barrels per million standard cubic feet

bcf:billion cubic feet (109)

BH: Bottom Hole

BHA: Bottom Hole Assembly

BHP: Bottom Hole Pressure

Bit: the cutting/ boring element used in drilling wells, consisting of a cutting and a circulating element

Bitumen: Form of heavy, Soil petroleum. See Asphalt

Block: Subdivided areas for the purpose of licensing to a company for exploration or production rights

Blow down: Process of releasing pressure. Producing a gas cap after oil production has concluded

Blowout: Uncontrolled release of fluids from the well bore

Blowout preventer: See BOP

BOD: Basis of Design

BOE: Barrels of oil equivalent

BOP: Blowout preventer, arrangement of valves and rams installed at wellhead to prevent sudden escape of fluids from reservoir

Bopd: Barrels of oil per day

Borehole: refers to the face of the rock outside or below the casing

Bottom-hole: Deepest part of a well

Bottom-Hole Assembly (BHA): the lower part of the drill string. includes drill collars, stabilizers and other drilling components

Bottom-Hole Pressure (BHP): The pressure at the bottom of a well