List of abbreviations in oil and gas exploration and production

The oil and gas industry uses many acronyms and abbreviations. This list is meant for indicative purposes only and should not be relied upon for anything but general information.

# 1C – Proved contingent resources 1oo2 – One out of two voting (instrumentation) 1P – Proven reserves 2C – Proved and probable contingent resources 2D – two-dimensional (geophysics) 2oo2 – Two out of two voting (instrumentation) 2oo2D – Two out of two voting with additional diagnostic detection capabilities (instrumentation) 2oo3 – Two out of three voting (instrumentation) 2ooN detection – to reach specified alarm limit when N ≥ 3 (instrumentation) 2P – proved and probable reserves 3C – three components seismic acquisition (x, y, and z) 3C – Proved, probable and possible contingent resources 3D – three-dimensional (geophysics) 3P – proved, probable and possible reserves 4D – multiple 3Ds acquired over time (the 4th D) over the same area with the same parameters (geophysics) 8rd – eight round (describes the number of revolutions per inch of pipe thread)

Symbol

°API – degrees API (American Petroleum Institute) density of oil

A A – Appraisal (well) AADE – American Association of Drilling Engineers AAPG – American Association of Petroleum Geologists AAPL – American Association of Professional Landmen AAODC – American Association of Oilwell Drilling Contractors (obsolete; superseded by IADC) AAV – Annulus access valve ABAN – Abandonment, (also as AB and ABD and ABND) ABSA – Alberta Boilers Safety Association ABT – Annulus bore test ACC – Air-cooled heat condenser ACHE – Air-cooled heat exchanger ACOU – Acoustic ACP – Alkali-cosolvent-polymer ACQU – Acquisition log ACV – Automatic control valve ADE – Advanced decision-making environment ADEP – Awaiting development with exploration potential, referring to an asset ADROC – advanced rock properties report ADT – Applied drilling technology, ADT log ADM – Advanced diagnostics module (fieldbus) AER – Auto excitation regulator AEMO – Australian Energy Market Operator AFE – Authorization for expenditure, a process of submitting a business proposal to investors AFP – Active fire protection AGA – American Gas Association AGRU – acid gas removal unit AGT – (1) agitator, used in drilling AGT – (2) authorised gas tester (certified by OPITTO) AGT – (3) Azerbaijan – Georgia – Turkey (a region rich in oil related activity) AHBDF – along hole (depth) below Derrick floor AHD – along hole depth AHU – air handling unit AICD – autonomous inflow control device AIChemE – American Institute of Chemical Engineers AIM – asset integrity management AIPSM – asset integrity and process safety management AIR – assurance interface and risk AIRG – airgun AIRRE – airgun report AISC – American Institute of Steel Construction AISI – American Iron and Steel Institute AIT – analyzer indicator transmitter AIT – array induction tool AL – appraisal license (United Kingdom), a type of onshore licence issued before 1996 ALAP – as low as possible (used along with density of mud) ALARP – as low as reasonably practicable ALC – vertical seismic profile acoustic log calibration report ALLMS – anchor leg load monitoring system ALQ – additional living quarters ALR – acoustic log report ALT – altered AM – asset management aMDEA – activated methyldiethanolamine AMS – auxiliary measurement service log; auxiliary measurement sonde (temperature) AMSL – above mean sea level AMI – area of mutual interest AMV – annulus master valve ANACO – analysis of core logs report ANARE – analysis report ANSI - American National Standards Institute AOF – absolute open flow AOFP – absolute open-flow potential AOI – area of interest AOL – arrive on location AOR – additional oil recovery AP – alkali-polymer APD – application for permit to drill API – American Petroleum Institute: organization which sets unit standards in the oil and gas industry °API – degrees API (gravity of oil) APPRE – appraisal report APS – active pipe support APWD – annular pressure while drilling (tool) ARACL – array acoustic log ARESV – analysis of reservoir ARI – azimuthal resistivity image ARRC – array acoustic report ART – actuator running tool AS – array sonic processing log ASD – acoustic sand detection ASI – ASI log ASME – American Society of Mechanical Engineers ASOG – activity-specific operating guidelines ASP – array sonic processing report ASP – alkali-surfactant-polymer ASTM – American Society for Testing and Materials ASCSSV – annulus surface controlled sub-surface valve ASV – anti-surge valve ASV – annular safety valve ASV – accommodation and support vessel ATD – application to drill ATU – auto top-up unit AUV – autonomous underwater vehicle AV – annular velocity or apparent viscosity AVGMS – annulus vent gas monitoring system AVO – amplitude versus offset (geophysics) AWB/V – annulus wing block/valve (XT) AWO – approval for well operation ATM – at the moment

B B or b – prefix denoting a number in billions BA – bottom assembly (of a riser) bbl – barrel bbl/MMscf – barrels per million standard cubic feet BBG – buy back gas BBSM – behaviour-based safety management BCPD – barrels condensate per day Bcf – billion cubic feet (of natural gas) Bcf/d – billion cubic feet per day (of natural gas) Bcfe – billion cubic feet (of natural gas equivalent) BD – bursting disc BDF – below derrick floor BDL – bit data log BDV – blowdown valve BGL – borehole geometry log BGL – below ground level (used as a datum for depths in a well) BGS – British Geological Survey BGT – borehole geometry tool BGWP – base of ground-water protection BH – bloodhound BHA – bottom hole assembly (toolstring on coiled tubing or drill pipe) BHC – BHC gamma ray log BHCA – BHC acoustic log BHCS – BHC sonic log BHCT – bottomhole circulating temperature BHKA – bottomhole kickoff assembly BHL – borehole log BHP – bottom hole pressure BHPRP – borehole pressure report BHSRE – bottom hole sampling report BHSS – borehole seismic survey BHT – bottomhole temperature BHTV – borehole television report BINXQ – bond index quicklook log BIOR – biostratigraphic range log BIORE – biostratigraphy study report BSLM – bend stiffener latch mechanism BSW – base sediment and water BIVDL – BI/DK/WF/casing collar locator/gamma ray log BLAT - BOP landing assist tool BLD – bailed (refers to the practice of removing debris from the hole with a cylindrical container on a wireline) BLI – bottom of logging interval BLP – bridge-linked platform BO – back-off log BO – barrel of oil boe – barrels of oil equivalent boed – barrels of oil equivalent per day BOEM – Bureau of Ocean Energy Management boepd – barrels of oil equivalent per day BOB – back on bottom BOD – biological oxygen demand BOL – bill of lading BOM – bill of materials BOP – blowout preventer BOP – bottom of pipe BOPD – barrels of oil per day BOPE – blowout prevention equipment BOREH – borehole seismic analysis BOSIET – basic offshore safety induction and emergency training BOTHL – bottom hole locator log BOTTO – bottom hole pressure/temperature report BP – bridge plug BPD – barrels per day BPH – barrels per hour BPFL – borehole profile log BPLUG – baker plug BPM – barrels per minute BPV – back pressure valve (goes on the end of coiled tubing a drill pipe tool strings to prevent fluid flow in the wrong direction) BQL – B/QL log BRPLG – bridge plug log BRT – below rotary table (used as a datum for depths in a well) BS – bend stiffener BS – bumper sub BS – booster station BSEE – US: Bureau of Safety and Environmental Enforcement (formerly the MMS) BSG – black start generator BSR – blind shear rams (blowout preventer) BSML – below sea mean level BS&W – basic sediments and water BT – buoyancy tank BTEX – benzene, toluene, ethyl-benzene and xylene BTHL – bottom hole log BTO/C – break to open/close (valve torque) BTU – British thermal units BTU – Board of Trade Unit (1 kWh) (historical) BU – bottom up BUL – bottom-up lag BUR – build-up rate BVO – ball valve operator bwd – barrels of water per day (often used in reference to oil production) bwipd – barrels of water injected per day – barrels of water per day

C C – completion (downhole equipment in a finished well) C&E – well completion and equipment cost C&S – cased and suspended C1 – methane C2 – ethane C3 – propane C4 – butane C5 – pentanes C6 – hexanes C7+ – heavy hydrocarbon components CA – core analysis log CAAF – contract authorization approval form CalGEM – California Geologic Energy Management Division (oil & gas regulatory body) CALI – caliper log CALOG – circumferential acoustic log CALVE – calibrated velocity log data CAODC – Canadian Association of Oilwell Drilling Contractors CAPP – Canadian Association of Petroleum Producers CAR – Company Appointed Representative CART – cam-actuated running tool (housing running tool) CART – cap replacement tool CAS – casing log CAT – connector actuating tool CB – casing bowl CB – core barrel CBF – casing bowl flange CBIL – CBIL log CBL – cement bond log (measurement of casing cement integrity) CBM – choke bridge module – XT choke CBM – conventional buoy mooring CBM – coal-bed methane CCHT – core chart log CCL – casing collar locator (in perforation or completion operations, the tool provides depths by correlation of the casing string's magnetic anomaly with known casing features) CCLBD – construction / commissioning logic block diagram CCLP – casing collar locator perforation CCLTP – casing collar locator through tubing plug CD – core description CDATA – core data CDIS – CDI synthetic seismic log CDU – control distribution unit CDU – crude distillation unit CDP – common depth point (geophysics) CDP – comprehensive drilling plan CDRCL – compensated dual resistivity cal. log CDF – core contaminated by drilling fluid CDFT – critical device function test CE – CE log CEC – cation-exchange capacity CECAN – CEC analysis CEME – cement evaluation CEOR – chemical-enhanced oil recovery CER – central electrical/equipment room CERE – cement remedial log CET – cement evaluation tool CF – completion fluid CF – casing flange CFD – computational fluid dynamics CFGPD – cubic feet of gas per day CFU – compact flotation unit CGEL – CG EL log CGL – core gamma log CGPA – Canadian Gas Processors Association CGPH – core graph log CGR – condensate gas ratio CGTL – compact gas to liquids (production equipment small enough to fit on a ship) CHCNC – CHCNC gamma ray casing collar locator CHDTP – calliper HDT playback log CHECK – checkshot and acoustic calibration report CHESM – contractor, health, environment and safety management CHF – casing head flange CHK – choke (a restriction in a flowline or a system, usually referring to a production choke during a test or the choke in the well control system) CHKSR – checkshot survey report CHKSS – checkshot survey log CHOPS – cold heavy oil production with sand CHP – casing hanger pressure (pressure in an annulus as measured at the casing hanger) CHOTO – commissioning, handover and takeover CHROM – chromatolog CHRT – casing hanger running tool CIBP – cast iron bridge plug CICR – cast iron cement retainer CIDL – chemical injection downhole lower CIDU – chemical injection downhole upper CIL – chemical injection line CILD – conduction log CIMV – chemical injection metering valve CIRC – circulation CITHP – closed-in tubing head pressure (tubing head pressure when the well is shut in) CIV – chemical injection valve CK – choke (a restriction in a flowline or a system, usually referring to a production choke during a test or the choke in the well control system) CL – core log CLG – core log and graph CM – choke module CMC – crown mounted compensators CMC – critical micelle concentration CMP – common midpoint (geophysics) CMR – combinable magnetic resonance (NMR log tool) CMT – cement CNA – clay, no analysis CND – compensated neutron density CNFDP – CNFD true vertical-depth playback log CNGR – compensated neutron gamma-ray log CNL – compensated neutron log CNLFD – CNL/FDC log CNS – Central North Sea