List of abbreviations in oil and gas exploration and production - wikipedia List of abbreviations in oil and gas exploration and production Bold text This list is incomplete ; you can help by expanding it. 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. Contents 1 # 6 E 7 F 8 G 9 H 10 I 11 J 12 K 13 L 14 M 15 N 16 O 17 P 18 Q 19 R 20 S 21 T 22 U 23 V 24 W 25 X 26 Y 27 Z 28 See also 29 References 30 External links # 1C -- Proved Contingent Resources 1P -- Proven reserves 2C -- Proved and probable Contingent Resources 2D -- two - dimensional ( geophysics ) 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 ) 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American Association of Professional Landmen AAODC -- American Association of Oilwell Drilling Contractors ( obsolete ; superseded by IADC ) AAV -- Annulus Access Valve ABAN -- Abandonment, ( also as AB and ABD ) ABSA -- Alberta Boilers Safety Association ACHE -- Air - Cooled Heat Exchanger ACOU -- Acoustic ACQU -- Acquisition log 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 ) AFE -- Authorization For Expenditure, a process of submitting a business proposal to investors AFP -- Active Fire Protection AGRU -- acid gas removal unit AGT - Agitator, used in Drilling AHBDF -- along hole ( depth ) below Derrick floor AHD -- along hole depth AHU -- Air Handling Unit AICD -- autonomous inflow control device AIR -- Assurance Interface and Risk AIRG -- airgun AIRRE -- airgun report 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 -- aertical seismic profile acoustic log calibration report ALLMS - Anchor Leg Load Monitoring System ALQ -- Additional Living Quarters ALR -- acoustic log report aMDEA -- activated methyldiethanolamine AMS -- auxiliary measurement service log ; Auxiliary Measurement Sonde ( temperature ) AMSL -- above mean sea level AMI -- area of mutal interest AMV -- annulus master valve ANACO -- analysis of core logs report ANARE -- analysis report AOF -- absolute open flow AOFP -- absolute open - flow potential AOL -- Arrive on location APD -- application for permit to drill API -- American Petroleum Institute : organization which sets unit standards in the oil and gas industry APPRE -- appraisal report APS -- active pipe support APWD -- annular pressure while drilling ( tool ) ( 2 ) 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 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 -- authonomus 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 or b -- prefix denoting a number in billions BA -- Bottom Assembly ( of a riser ) bbl -- barrel BBG -- Buy Back Gas BBSM -- behaviour - based safety management BCPD -- barrels condensate per day Bcf -- billion cubic feet ( of natural gas ) Bcfe -- billion cubic feet ( of natural gas equivalent ) 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 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 BIVDL -- BI / DK / WF / Casing collar locator / gamma ray log BLI -- bottom of logging interval BO -- back - off log boe -- barrel ( s ) of oil equivalent boed -- barrel ( s ) of oil equivalent per day BOEM -- Bureau of Ocean Energy Management boepd -- barrel ( s ) of oil equivalent per day BOB -- back on bottom BOD -- Biological Oxygen Demand BOM -- bill of materials BOP -- blowout preventer BOP -- bottom of pipe BOPD -- barrel ( s ) 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 BPO - By - Pass Override 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 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 ) bwpd -- barrels of water per day C&E -- well completion and equipment cost C&S -- cased and suspended C1 -- methane C2 -- ethane C3 -- propane C4 -- butane C6 -- hexanes C7+ -- heavy hydrocarbon components CA -- core analysis log CAAF - Contract Authorization Approval Form CALI -- calliper log CALOG -- circumferential acoustic log CALVE -- calibrated velocity log data CAODC -- Canadian Association of Oilwell Drilling Contractors CAPP -- Canadian Association of Petroleum Producers CART -- cam - actuated running tool ( housing running tool ) CART -- Cap Replacement Tool CAS -- casing log CAT -- Connector Actuating Tool CB -- core barrel 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 CDFT -- critical device function test CE -- CE log CERE -- cement remedial log CECAN -- CEC analysis CEME -- cement evaluation CER - Central Electrical / Equipment Room CET -- cement evaluation tool CF -- completion fluid CFD -- computational fluid dynamics CFU - Compact flotation unit CGEL -- CG EL log CGL -- core gamma log 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 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 & Takeover CHROM -- chromatolog CHRT -- casing hanger running tool CIBP -- cast iron bridge plug 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 CL -- core log CLG -- core log and graph CM -- choke module CMC -- crown mounted compensators CMP -- common midpoint ( geophysics ) CMR -- Combinable Magnetic Resonance ( NMR log tool ) ( 3 ) ( 4 ) 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 CNCF -- field - normalised compensated neutron porosity CNR -- Canadian Natural Resoures CO -- change out ( ex. from rod equipment to casing equipment ) COA -- Conditions of Approval COC -- Certificate of Conformance COD -- Chemical Oxygen Demand COL -- collar log COMAN -- compositional analysis COML -- compaction log COMP -- composite log COMPR -- completion program report COMPU -- computest report COMRE -- completion record log CONDE -- condensate analysis report CONDR -- continuous directional log CORAN -- core analysis report CORE -- core report CORG -- corgun log CORIB -- coriband log CORLG -- correlation log COROR -- core orientation report COW -- Control of Work COXY -- carbon / oxygen log CP -- Cathodic Protection cP -- centiPoise ( Viscosity unit of measurement ) CPI separator -- corrugated plate interceptor CPI -- CPI log ( computer - processed interpretation ), CPI ( corrugated plate interceptor ) CPICB -- CPI coriband log CPIRE -- CPI report CRA -- corrosion - resistant alloy CRET -- cement retainer setting log CRP -- control riser platform CRP -- common / central reference point ( subsea survey ) CRT -- Clamp Replacement tool CRT -- Casing Running Tool CSE -- Confined Space Entry CsF -- Caesium formate ( coincidentally also an acronym of the sole large - scale supplier of caesium formate brine, cabot specialty fluids. ) CSG -- Coal Seam Gas csg -- casing CSHN -- cased - hole neutron log CSI -- Combinable Seismic Imager ( VSP ) log ( Schlumberger ) CSMT -- core sampler tester log CSO -- complete seal - off CSPG -- Canadian Society of Petroleum Geologists CSR - Corporate Social Responsibility CST -- Chronological Sample Taker log ( Schlumberger ) CSTAK -- core sample taken log CSTRE -- CST report CSU -- Commissioning and Start Up CSUG -- Canadian Society for Unconventional Gas CT -- coiled tubing CTD -- coiled tubing drilling CTCO -- coiled tubing clean - out CTLF -- coiled tubing lift frame CTLF -- compensated tension lift frame CTOD -- crack tip opening displacement CTP -- Commissioning Test Procedure CTRAC -- cement tracer log CUI -- Corrosion Under Insulation CUT -- cutter log CUTTD -- cuttings description report CWOP -- complete well on paper CWOR -- completion work over riser X / O -- X-Over, Cross Over CYBD -- cyberbond log CYBLK -- cyberlook log CYDIP -- cyberdip log CYDN -- cyberdon log CYPRO -- cyberproducts log D - Development D&C -- drilling and completions D&I - direction and inclinitation ( MWD borehole deviation survey ) ( 5 ) DAC -- dipole acoustic log DARCI -- Darci log DAS - Data Acquisition System DAT -- wellhead housing drill - ahead tool DAZD -- dip and azimuth display DBB -- double block and bleed DBP - drillable bridge plug DC -- drill centre DC -- drill collar ( s ) DCAL -- dual caliper log DCC -- Distance cross course DCS -- Distributed Control System DD -- directional driller or directional drilling DDC - daily drilling cost DDC - De-watering and Drying Contract DDBHC -- DDBHC waveform log DDET -- depth determination log DDM -- Derrick drilling machine ( a.k.a. top drive ) DDNL -- dual det. neutron life log DDPT -- drill data plot log DDPU - Double drum pulling unit DEA - diethanol amine DECC -- Department for Energy and Climate Change ( UK ) DECT -- decay time DEFSU -- definitive survey report DEH - Direct Electrical Heating DELTA -- delta - T log DEN -- density log DEPAN -- deposit analysis report DEPC -- depth control log DEPT -- depth DESFL -- deep induction SFL log DEV -- development well, Lahee classification DEVLG -- deviation log DEXP -- D - exponent log DF -- Derrick floor DFI -- Design, Fabrication and Installation résumé DFIT - Diagnostic Fracture Injection Test DFR -- drilling factual report DGP -- dynamic geohistory plot ( 3D technique ) DH -- drilling history DHC -- depositional history curve DHSV -- downhole safety valve DHPG - downhole pressure gauge DHPTT -- downhole pressure / temperature transducer DIBHC -- DIS BHC log DIEGR -- dielectric gamma ray log DIF -- drill in fluids DIL -- dual - induction log DILB -- dual - induction BHC log DILL -- dual - induction laterolog DILLS -- dual - induction log - LSS DILSL -- dual - induction log - SLS DIM -- directional inertia mechanism DINT -- dip interpretation DIP -- dipmeter log DIPAR -- dipole acoustic report DIPBH -- dipmeter borehole log DIPFT -- dipmeter fast log DIPLP -- dip lithology pressure log DIPRE -- dipmeter report DIPRM -- dip removal log DIPSA -- dipmeter soda log DIPSK -- dipmeter stick log DIRS -- directional survey log DIRSU -- directional survey report DIS -- DIS - SLS log DISFL -- DISFL DBHC gamma ray log DISO -- dual induction sonic log DL -- development license ( United Kingdom ), a type of onshore license issued before 1996 DLIST -- dip - list log DLL -- dual laterolog ( deep and shallow resistivity ) DLS -- dog - leg severity ( directional drilling ) DM - dry mate DMA -- dead - man anchor DMAS - dead - man auto - shear DMAS DMRP - Density - Magnetic Resonance Porosity ( wireline tool ) DMT - Down hole Monitoring Tool DNHO -- downhole logging DOA -- delegation of authority DOE -- Department of Energy, United States DOWRE -- downhole report DP -- drill pipe DP -- dynamic positioning DPDV -- dynamically positioned drilling vessel DPL -- dual propagation log DPLD -- differential pressure levitated device ( or vehicle ) DPRES -- dual propagation resistivity log DPT -- deeper pool test, Lahee classification DQLC -- dipmeter quality control log DR -- dummy - run log DR -- drilling report DRI -- drift log DRL - Drilling DRLCT -- drilling chart DRLOG -- drilling log DRLPR -- drilling proposal / progress report DRO -- Discovered Resources Opportunities DRPG -- drilling program report DRPRS -- drilling pressure DRREP -- drilling report DRYRE -- drying report DS -- Deviation survey, ( also directional system ) DSCAN -- DSC analysis report DSI -- dipole shear imager DSL - digital spectralog ( Western Atlas ) DSPT -- cross-plots log DST -- drill - stem test DSTG -- DSTG log DSTL -- drill - stem test log DSTND -- dual - space thermal neutron density log DSTPB -- drill - stem test true vertical depth playback log DSTR -- drill - stem test report DSTRE -- drill - stem test report DSTSM -- drill - stem test summary report DSTW -- drill - stem test job report / works DSU - drill spacing unit DSV -- diving support vessel or drilling supervisor DTI -- Department of Trade and Industry ( UK ) ( obsolete ; superseded by dBERR, which was then superseded by DECC ) DTPB -- CNT true vertical - depth playback log DTT -- depth to time DVT - Differential Valve Tool ( for cementing multiple stages ) DWOP -- drilling well on paper ( a theoretical exercise conducted involving the service - provider managers ) DWQL -- dual - water quicklook log DWSS -- dig - well seismic surface log DXC -- DXC pressure pilot report E -- Exploration E&A -- Exploration and Appraisal E&I -- Electrical and Instrumentation E&P -- Exploration and Production EA -- Exploration Asset EAGE -- European Association of Geoscientists & Engineers ECD -- Equivalent Circulating Density EDG / EDGE - Emergency Diesel Generator ECMS -- Electrical Control and Monitoring System ECP -- External Casing Packer ECRD -- Electrically Controlled Release Device ( for abandoning stuck wireline tool from cable ) ECT - External Cantilevered Turret EDP -- Exploration Drilling Program Report EDP -- Emergency Disconnect Package EDR -- Exploration Drilling Report EDR -- Electronic Drilling Recorder EDS -- Emergency Disconnection Sequence EEHA - Electrical Equipment for Hazardous Areas ( IECEx ) EFL -- Electrical Flying Lead EFR -- Engineering Factual Report EHT -- Electric Heat Trace EGMBE -- Ethylene Glycol Mono - Butyl Ether EHU - Electro - Hydraulic Unit EIA - Environmental Impact Assessment ELEC TECH - Electronics Technician ( See also : ETech ) ELT -- Economic Limit Test EL -- Electric Log EM -- EMOP Log EMCS - Energy Management and Control Systems EMD -- Equivalent Mud Density EMG -- Equivalent Mud Gradient EMOP -- EMOP Well Site Processing Log EMP -- Electromagnetic Propagation Log EMS - Environment measurement sonde ( wireline multi-caliper ) ( 6 ) EMW -- Equivalent Mud Weight EN PI -- Enhanced Productivity Index Log ENG -- Engineering Log ENGF -- Engineer Factual Report ENGPD -- Engineering Porosity Data Eni -- Ente Nazionale Idrocarburi S.p.A. ( Italy ) ENJ -- Enerjet Log ENMCS - Electrical Network Monitoring and Control System EOFL -- End of Field Life EOR -- Enhanced Oil Recovery EOT -- End of Tubing EOT - Electric Overhead Travelling ELV - Extra Low Voltage EOW -- End Of Well Report EPCM / I -- Engineering Procurement Construction & Management / Installation EPCU -- Electrical Power Conditioning Unit EPIDORIS -- Exploration and Production Integrated Drilling Operations and Reservoir Information System EPL -- EPL Log EPLG -- Epilog EPLPC -- EPL - PCD - SGR Log EPS -- Early Production System EPT -- Electromagnetic Propagation EPU -- Electrical Power Unit EPTNG -- EPT - NGT Log EPV - Early Production Vessel ER ( D ) -- Extended Reach ( Drilling ) ERT -- Emergency Response Training ESD -- Emergency Shut - Down ESHIA - Environmental, Social and Health Impact Assessment ESIA - Environmental and Social Impact Assessment ESP -- Electric Submersible Pump ETAP -- Eastern Trough Area Project ETD -- External Turret Disconnectable ETECH -- Electronics Technician ( See also : Elec Tech ) ETTD -- Electromagnetic Thickness Test ETU -- Electrical Test Unit EUE -- External - upset - end ( tubing connection ) EUR -- Estimated Ultimate Recovery EVARE -- Evaluation Report EWMP - Earthworks / Electrical Works / Excavation Works Management Plan EWR -- End Of Well Report EXL -- or XL, Exploration Licence ( United Kingdom ), a type of onshore licence issued between the First Onshore Licensing Round ( 1986 ) and the Sixth ( 1992 ) EZSV -- EZSV Log FAC -- factual report FAC - first aid case FACHV -- four - arm calliper log FANAL -- formation analysis sheet log FAT -- factory acceptance testing FBE -- fusion - bonded epoxy FC -- float collar FCGT - Flood Clean Gauge Test FCP -- final circulating pressure FCV - Flow Control Valve FCVE -- F - curve log FDC -- formation density log FDF - Forced Draft Fan FDP -- Field Development Plan FDS -- functional design specification FEED -- front - end engineering design FER -- field equipment room FEWD -- formation evaluation while drilling FFAC -- formation factor log FFM -- full field model FG - Fiberglass FGHT - Flood Gauge Hydrotest FRP - Fiberglass Reinforced Plastics FGEOL -- final geological report FH -- full - hole tool joint FI -- final inspection FID -- final investment decision FID - flame ionisation detection FIL -- FIL log FI ( M ) -- free issue ( materials ) FINST -- final stratigraphic report FINTP -- formation interpretation FIP -- flow - induced pulsation FIT -- fairing intervention tool FIT -- fluid identification test FIT -- formation integrity test FIT -- formation interval tester FIV -- flow - induced vibration FIV -- formation isolation valve FJC - Field Joint Coating FL -- F log FLAP - fluid level above pump FLDF - Flying Lead Deployment Frame FLIV -- flowline injection valve FLIV -- flowline isolation valve FLET - Flowline End Termination aFLET - Actuated Flowline End Termination FLNG - Floating liquefied natural gas FLOG -- FLOG PHIX RHGX Log FLOPR -- flow profile report FLOT -- flying lead orientation tool FLOW -- flow and buildup test report FLRA -- field - level risk assessment FLS -- fluid sample FLT -- fault ( geology ) FMEA -- failure modes, & effects analysis FMECA -- failure modes, effects, and criticality analysis FMI -- formation micro imaging log ( azimuthal microresistivity ) FMP -- formation microscan report FMP - Field Management Plan FMS -- formation multi-scan log ; formation micro-scan log FMT - Flow Management Tool FMTAN -- FMT analysis report FOBOT - Fibre Optic Break Out Tray FOET -- Further Offshore Emergency Training FOF - Face of Flange FOSA - Field Operating Services Agreement FOSV -- full - opening safety valve FPDM -- fracture potential and domain modelling / mapping FPH -- feet per hour FPIT -- free - point indicator tool FPL -- flow analysis log FPLAN -- field plan log FPS - field production system FPSO -- floating production storage and offloading vessel FPU -- floating processing unit FRA -- fracture log FRARE -- fracture report FRES -- final reserve report FS -- fail safe FSB -- flowline support base FSI -- flawless start - up initiative FSLT - Flexible Sealine Lifting Tool FSO -- floating storage offloading vessel FSR - Facility Status Report FT -- formation tester log FTM -- fire - team member FTP -- first tranche petroleum FTR -- Function Test Report FTRE -- formation testing report FULDI -- full diameter study report FV -- funnel viscosity or float valve FWHP -- flowing well - head pressure FWKO -- free water knock - out FWL -- free water level FWR -- final well report FWV -- flow wing valve ( also known as production wing valve on a xmas tree ) F_L - FNL / FEL, from north / east line G / C -- Gas Condensate GC - Gathering Center G&P -- Gathering and Processing G&T - Gathering and Transportation GALT - Gross Air Leak Test GAS -- Gas Log GASAN -- Gas Analysis Report GBS -- Gravity Based Structure GBT -- Gravity Base Tank GCLOG -- Graphic Core Log GCT -- GCT Log GDAT -- Geodetic Datum GDE - Gross Depositional Environment GDIP -- Geodip Log GDT -- Gas Down To GE -- Condensate gas equivalent GE -- Ground Elevation ( also ( GR or GRE ) ) GEOCH -- Geochemical Evaluation GEODY -- GEO DYS Log GEOEV -- Geochemical Evaluation Report GEOFO -- Geological & Formation Evaluation Report GEOL -- Geological Surveillance Log GEOP -- Geophone Data Log GEOPN -- Geological Well Prognosis Report GEOPR -- Geological Operations Progress Report GEORE -- Geological Report GGRG -- Gauge Ring GIIP -- Gas Initially In Place GIH -- Go In Hole GIS -- Geographic Information System GL -- Gas Lift GL -- Ground Level GLE -- Ground Level Elevation ( generally in metres above mean sea level ) GLM -- Gas Lift Mandrel ( alternative name for Side Pocket Mandrel ) GLR -- Gas Liquid Ratio GLT -- GLT Log GLV -- Gas Lift Valve GLW -- GOC -- Gas Oil Contact GOM -- Gulf of Mexico GOP -- Geological Operations Report GOR -- Gas Oil Ratio GOSP -- Gas / Oil Separation Plant GPIT -- General Purpose Inclinometry Tool ( borehole survey ) ( 7 ) GPLT -- Geol Plot Log GPTG - Gallons Per Thousand Gallons GPM - Gallons Per Mcf GPSL -- Geo Pressure Log GR -- Ground Level ( or Elevation / / ( also ( GE or GRE ) ) ) or Gamma Ray. Or Gauge Ring ( measure hole size ) GRAD -- Gradiometer Log GRE -- Ground Elevation ( also ( GR or GE ) ) GRLOG -- Grapholog GRN -- Gamma Ray Neutron Log GRP -- Glass Reinforced Plastic GRV -- Gross Rock Volume GRSVY -- Gradient Survey Log GS -- Gas Supplier GS -- Gel Strength GST -- GST Log GTC / G - Gas Turbine Compressor / Generator GTL -- Gas To Liquid GTW -- Gas To Wire GUN -- Gun Set Log GWC -- Gas - Water Contact GWR -- Guided Wave Radar GWREP -- Geo Well Report HAZ -- Heat Affected Zone HAZID -- Hazard Identification ( meeting ) HAZOP -- Hazardous Operation HBE - High Build Epoxy HBP - Held By Production HC -- Hydrocarbons HCAL -- HRCC Calliper ( in Logs ) ( in Inches ) HCCS -- Horizontal Clamp Connection System HCM -- Horizontal Connection Module. To connect the Xmas Tree to the Manifold HCS - High - Capacity Square mesh screens HDA -- Helideck Assistant HDD -- Horizontal Directional Drilling HDPE - High Density Polyethylene HDT -- High Resolution Dipmeter Log HDU - Horizontal Drive Unit HEXT -- Hex Diplog HFE -- Human Factors Engineering HFL -- Hydraulic Flying Lead HGO - Heavy Gas Oil HGS -- High ( Specific - ) Gravity Solids HH - Horse Head ( on pumping unit ) HHP -- Hydraulic Horsepower HI - Hydrogen Index HIPPS -- High Integrity Pressure Protection System HIRA - Hazard Identification and Risk Assessment HISC -- Hydrogen induced stress cracking HL -- Hook Load HLCV - Heavy Lift Crane Vessel HLO -- Heavy Load - out ( Facility ) HLO -- Helicopter Landing Officer Hmax -- Maximum Wave Height HNGS - flasked Hostile Natural Gamma - ray Spectrometry tool ( 8 ) HOB - Hang on bridle ( cable assy ) HP -- Hydrostatic Pressure HPGAG -- High Pressure Gauge HPHT -- High Pressure High Temperature ( same as HTHP ) HPPS -- HP Pressure Log HPU -- Hydraulic Power Unit HPWBM -- High Performance Water Base Mud HRCC -- HCAl of Calliper ( in Inches ) HRLA - High Resolution Laterolog Array ( resistivity logging tool ) HRF - Hyperbaric Rescue Facility / Vessel Hs -- Significant Wave Height HSE -- Health, Safety and Environment or Health & Safety Executive ( United Kingdom ) HSV - Hyperbaric Support Vessel HTHP -- High Temperature High Pressure ( same as HPHT ) HTM -- Helideck Team Member HVDC -- High Voltage Direct Current HWDP -- Heavy - Weight Drill Pipe ( sometimes spelled Hevi - Wate ) HUD -- Hold Up Depth HUN - Hold Up Nipple HUET - Helicopter Underwater Escape Training HWDP -- Heavy Weight Drill Pipe HYPJ -- Hyperjet HYROP -- Hydrophone Log I :P -- Injector To Producer Ratio IADC -- International Association of Drilling Contractors IAT - Internal Active Turret IBC -- Intermediate Bulk Container ICoTA -- Intervention and Coiled Tubing Association ICC - Isolation Confirmation Certificate ICD -- Inflow Control Device ICEX ; IECEx - International Electrotechnical Commission System for Certification to standards relating to equipment for use in Explosive Atmospheres ( EEHA ) ICP -- Intermediate Casing Point ICSS - Integrated Controls and Safety System ICSU -- Integrated Commissioning and Start Up ICV -- Interval Control Valve ICV -- Integrated Cement Volume ( of Borehole ) ( in Cubic Metres ) ICW - InComplete Work ID -- Inner or Internal Diameter ( of a tubular component such as a casing ) IDC -- Intangible Drilling Costs IDEL -- IDEL Log IEB -- Induction Electro BHC Log IEL -- Induction Electrical Log IF -- Internal Flush tool joint iFLS - intelligent fast load shedding IGPE - Immersion Grade Phenolic Epoxy IH -- Gamma Ray Log IHEC - Isolation of Hazardous Energy Certificate IHUC - Installation, Hook - Up and Commissioning IHV -- Integrated Hole Volume ( of Borehole ) ( in Cubic Metres ) IIC - Infield Installation Contractor IJL -- Injection Log IL -- Induction Log ILI -- InLine Inspection ( Intelligent Pigging ) ILOGS -- Image Logs ILT - In - Line Tee IMAG -- Image Analysis Report IMCA -- International Marine Contractors Association IMPP - Injection Molded Polypropylene Coating System IMR - Inspection Maintenance and Repair INCR -- Incline Report INCRE -- Incline Report INDRS -- IND RES Sonic Log INDT -- INDT Log INDWE -- Individual Well Record Report INJEC -- Injection Falloff Log INSUR -- Inrun Survey Report INVES -- Investigative Program Report IOC -- International Oil Company IOM - Installation, Operation and Maintenance Manual IPAA -- Independent Petroleum Association of America IPC -- Installed Production Capacity IPLS -- IPLS Log IPR -- Inflow Performance Relationship IPT - Internal Passive Turret IR -- Interpretation Report IRC -- Inspection Release Certificate IRTJ -- IRTJ Gamma Ray Slimhole Log ISF -- ISF Sonic Log ISFBG -- ISF BHC GR Log ISFCD -- ISF Conductivity Log ISFGR -- ISF GR Casing Collar Locator Log ISFL -- ISF - LSS Log ISFP -- ISF Sonic True Vertical Depth Playback Log ISFPB -- ISF True Vertical Depth Playback Log ISFSL -- ISF SLS MSFL Log ISIP - Initial Shut In Pressure ISSOW - Integrated Safe System of Work ISV - Infield Support Vessel ITD - Internal Turret Disconnectable ITR - Inspection Test Record ITS -- Influx To Surface ITT - Internal Testing Tool. ( For BOP test ). IUG - Instrument Utility Gas IWCF -- International Well Control Federation IWOCS -- Installation / Workover Control System J J&A -- Junked and Abandoned JB -- Junk Basket JIB - Joint Interest Billing JLT - J - Lay Tower JT -- Joule - Thomson ( effect / valve / separator ) JTS - Joints JU -- Jack - Up drilling rig JV - Joint Venture JVP -- Joint Venture Partners / Participants KBE -- Kelly Bushing Elevation ( in meters above sea level, or meters above Ground Level ) KBUG -- Kelly Bushing under ground ( drilling up in coal mines, West Virginia, Baker & Taylor Drilling ) KCI - Potassium Chloride ( KCI ) mud KD -- Kelly Down KMW - Kill Mud Weight KOP -- Kick - Off Point Directional Drilling KOP -- Kick Off Plug KP -- Kilometre post KRP -- Kill Rate Pressure KB -- Kelly Bushing KBG -- Kelly Bushing Height above Ground Level KT - Kill Truck LACT -- Lease Automatic Custody Transfer LAH -- Lookahead LAOT -- Linear Activation Override Tool LARS -- Launch & Recovery System LAS - Log ASCII Standard LAT -- Lowest Astronomical Tide LCM -- Lost Circulation Material LCNLG -- LDT CNL Gamma Ray Log LD -- Lay Down ( tubing, rods, etc. ) LDAR - Leak Detection and Repair LDHI - Low Dosage Hydrate Inhibitor LDL -- Litho Density Log LDS - Leak Detection System ( pipeline monitoring ) LDTEP -- LDT EPT Gamma Ray Log LEAKL -- Leak Detection Log LEPRE -- Litho - Elastic Property Report LER -- Lands Eligible for Remining or Land Equivalent Ratio LER - Local Equipment Room LGO -- Light Gas Oil LGR -- Liquid Gas Ratio LGS -- Low ( specific - ) Gravity Solids LIC -- License LIB - Lead Impression Block LINCO -- Liner and Completion Progress Report LIOG -- Lithography Log LIT -- Lead Impression Tool LITDE -- Litho Density Quicklook Log LITHR -- Lithological Description Report LITRE -- Lithostratigraphy Report LITST -- Lithostratigraphic Log LKO -- Lowest Known Oil LL -- Laterolog LMAP -- Location Map LMRP -- Lower Marine Riser Package LMV -- Lower Master Valve ( on a Xmas tree ) LNG -- Liquefied Natural Gas LOA -- Letter of Authorisation / Agreement / Authority LOD - Lines of Defence LOE -- Lease Operating Expenses LOGGN -- Logging Whilst Drilling LOGRS -- Log Restoration Report LOGSM -- Log Sample LOLER -- Lifting Operations and Lifting Equipment Regulations LOT -- Leak - Off Test LOT -- Linear Override Tool LOT -- Lock Open Tool LOTO -- Lock Out / Tag Out LP -- Low Pressure LPG -- Liquefied Petroleum Gas LPH -- Litres Per Hour LPWHH -- Low Pressure Well Head Housing LRA -- Lower Riser Assembly LRP -- Lower Riser Package LSBGR -- Long Spacing BHC GR Log LSD -- Land Surface Datum LSP -- Life Support Package LSSON -- Long Spacing Sonic Log LT -- Linear Time or Lag Time L&T - Load and Test LTC - Long Thread and Coupled LT&C - Long Thread and Coupled LTI ( FR ) -- Lost Time Incident ( Frequency Rate ) LTP - liner shaker, tensile bolting cloth, perforated panel backing. LUMI -- Luminescence Log LUN - Livening Up Notice LVEL -- Linear Velocity Log LVOT -- Linear Valve Override Tool LWD -- Logging While Drilling LWOL - Last Well on Lease LWOP -- Logging Well on Paper M or m -- prefix designating a number in thousands ( not to be confused with SI prefix M for mega - or m for milli ) m -- metre MAASP -- Maximum Acceptable ( or Allowable ) Annular Surface Pressure MAC -- Multipole Acoustic Log MACL -- Multiarm Caliper Log MAE - Major Accident Event MAGST -- Magnetostratigraphic Report MAOP -- Maximum Allowable Operating Pressure MARA -- Maralog MAST - sonic tool ( records waveform ). MAWP -- Maximum Allowable Working Pressure MBC - Membrane Brine Concentrator Mbd -- thousand barrels ( of oil ) per day Mbod -- thousand barrels of oil per day Mboe -- thousand barrels of oil equivalent Mboed -- thousand barrels of oil equivalent per day MBP - Mixed Bed Polisher Mbpd -- thousand barrels of oil per day MBR - Minimum Bend Radius MBRO -- Multi-Bore Restriction Orifices MBT -- Methylene Blue Test MBWH - Multi Bowl Wellhead MCD -- Mechanical Completion Dossier Mcf -- thousand cubic feet of natural gas Mcfe -- thousand cubic feet of natural gas equivalent MCHE -- Main Cryogenic Heat Exchanger MCM -- Manifold Choke Module MCP -- Monocolumn Platform MCS -- Manifold & Connection System MCS -- Master Control Station mD -- millidarcy, measure of permeability, with units of area MD -- Measured Depth ( see also MDSS ) MD -- Measurements / Drilling Log MDEA -- Methyl Diethanolamine ( aMDEA ) MDL -- Methane Drainage Licence ( United Kingdom ), a type of onshore licence allowing natural gas to be collected `` in the course of operations for making and keeping safe mines whether or not disused '' MDSS -- Measured Depth Sub-Sea MDT -- Modular formation Dynamic Tester MDR - Mud Damage Removal ( acid bullheading ) MEA -- Monoethanolamine MEG -- Mono - Ethylene Glycol MEIC - Mechanical Electrical Instrumentation Commission MEPRL -- Mechanical Properties Log MERCR -- Mercury Injection Study Report MERG -- Merge FDC / CNL / Gamma Ray / Dual Laterolog / Micro SFL Log MEST -- Micro-electrical scanning tool ( a dipmeter, aka. MST or FMS ). MF -- Marsh Funnel ( mud viscosity ) MFCT -- Multifinger Calliper Tool MGL -- Magnelog MGPS - Marine Growth Prevention System MLH -- Mud Liner Hanger MIFR -- Mini Frac Log MINL -- Minilog MIPAL -- Micropalaeo Log MIRU -- Move In and Rig Up MIST -- Minimum Industry Safety Training MIT - Mechanical Integrity Test MIYP -- Maximum Internal Yield Pressure mKB -- Meters below Kelly Bushing ML -- Microlog, or Mud Log MLL -- Microlaterolog MLF -- Marine Loading Facility MM or mm -- prefix designating a number in millions ( or SI unit -- millimetre ) MMbd -- million barrels per day MMbod -- million barrels of oil per day MMboe -- million barrels of oil equivalent MMboed -- million barrels of oil equivalent per day MMbpd -- million barrels per day MMcf -- million cubic feet ( of natural gas ) MMcfe -- million cubic feet ( of natural gas equivalent ) MMS -- Minerals Management Service, ( United States ) mmscfd -- million standard cubic feet per day MMTPA -- Millions of Metric Tonnes per Annum mmstb -- million stock barrels MNP -- Merge and Playback Log MODU -- Mobile Offshore Drilling Unit MOF -- Marine Offloading Facility MOPO - Matrix of Permitted Operations MOPU -- Mobile Offshore Production Unit MOT -- Materials / Marine Offloading Terminal MOV - Motor Operated Valve MPA -- Micropalaeo Analysis Report MPD -- Managed Pressure Drilling MPFM -- Multi-Phase Flow Meter MPK -- Merged Playback Log MPP -- Multiphase Pump MPQT -- Manufacturing Procedure Qualification Test MPS -- Manufacturing Procedure Specification MPSP -- Maximum Predicted Surface Pressure MPSV - Multi-Purpose Support Vessel MPV -- Multi Purpose Vessel MQC -- Multi Quick Connection Plate MR -- Marine Riser MR - Mixed Refrigerant MR - Morning Report MRBP - Magna Range Bridge Plug MRCV -- Multi Reverse Circulating Valve MRIRE -- Magnetic Resonance Image Report MRR - Material Receipt Report MRX - Magnetic resonance expert ( wireline NMR tool ) ( 9 ) MSCT -- Mechanical Sidewall Coring Tool ( 10 ) MSDS - Material Safety Data Sheet MSFL -- Micro SFL Log ; Micro-Spherically Focussed Log ( resistivity ). MSI -- Mechanical and Structural Inspection MSIP - Modular Sonic Imaging Platform ( Sonic Scanner ) ( 11 ) MSIPC -- Multi Stage inflatable Packer Collar MSL -- Mean Sea Level MSL -- Micro Spherical Log MSS -- Magnetic Single Shot MST -- MST EXP Resistivity Log MSV - Multipurpose Support Vessel MTBF - Mean Time Between Failure MT - Motor Temperature ; DMT Parameter for ESP motor MTO - Material Take - Off MTT -- MTT Multi-Isotope Trace Tool MUD -- Mud Log MUDT -- Mud Temperature Log MuSol -- Mutual Solvent MVB -- Master Valve Block on Xmas Tree MVC - Minimum Volume Commitment MW -- Mud weight MWD -- Measurement While Drilling MWDRE -- Measurement While Drilling Report MWS -- Marine Warranty Survey NACE -- National Association of Corrosion Engineers NAM - North American NAPF -- Non Aqueous Phase Fluid NASA -- Non Active Side Arm ( term used in the North Sea for kill wing valve on a Xmas tree ) NAVIG -- Navigational Log NB -- Nominal Bore NCC - Normally Clean Condensate ND - Nipple Down NDE -- Non Destructive Examination NEFE - Non Emulsifying Iron Inhibitor ( usually used with hydrochloric acid ) NEUT -- Neutron Log NFG -- ' No Fucking Good ' used for marking damaged equipment, not to be confused with NG being natural gas NFI -- No Further Investment NFW -- New Field Wildcat, Lahee classification NG -- Natural Gas NGDC -- National Geoscience Data Centre ( United Kingdom ) NGL -- Natural Gas Liquids NGR -- Natural Gamma Ray NGRC -- National Geological Records Centre ( United Kingdom ) NGS -- NGS Log NGSS -- NGS Spectro Log NGT -- Natural Gamma Ray Tool NGTLD -- NGT LDT QL Log NGLQT -- NGT QL Log NGTR -- NGT Ratio Log NHDA -- National Hydrocarbons Data Archive ( United Kingdom ) NHPV -- Net Hydrocarbon Pore Volume NMDC - Non Magnetic Drill Collar NMHC -- Non-Methane Hydrocarbons NMR -- Nuclear Magnetic Resonance Log NMVOC -- Non-Methane Volatile Organic Compounds NNS -- Northern North Sea NOISL -- Noise Log NOC -- National Oil Company NORM -- Naturally Occurring Radioactive Material NP -- Non Producing well ( as opposed to P -- Producing well ) NPD -- Norwegian Petroleum Directorate NPS -- Nominal Pipe Size ( sometimes NS ) NPSH ( R ) -- Net Positive Suction Head ( Required ) NPV -- Net Present Value NRI - Net Revenue Interest NRV -- Non Return Valve NPW -- New Pool Wildcat, Lahee classification NS -- North Sea ; can also refer to the North Slope Borough, Alaska, the North Slope, which includes Prudhoe Bay Oil Field ( the largest US oil field ), Kuparuk Oil Field, Milne Point, Lisburne, and Point McIntyre among others. NTHF -- Non-Toxic High Flash NTU -- Nephelometric Turbidity Unit NUMAR -- Magnetic Resonance Image Log O O&G -- Oil and Gas O&M -- Operations and Maintenance O / S - Overshot, fishing tool OBCS -- Ocean Bottom Cable System OBDTL -- OBDT Log OBEVA -- OBDT Evaluation Report OBM -- Oil - Based Mud OBO - Operated by Others OCIMF -- Oil Companies International Marine Forum OCI - Oil Corrosion Inhibitor ( Vessels ) OCL -- Quality Control Log OCTG -- Oil Country Tubular Goods ( oil well casing, tubing, and drill pipe ) OD -- Outer Diameter ( of a tubular component such as casing ) ODT -- Oil Down To OFST -- Offset Vertical Seismic Profile OEM -- Original Equipment Manufacturer OFIC - Offshore Interim Completion Certificate OLAF - Offshore Footless Loading Arm OH -- Openhole OH -- Openhole Log OHC -- Open Hole Completion OHD - Open Hazardous Drain OHUT - Offshore Hook - up team OI - Oxygen Index OIM -- Offshore Installation Manager OMRL -- Oriented Micro-Resistivity Log ONAN -- Oil Natural Air Natural cooled transformer ONNR - Office of Natural Resources Revenue ( formerly MMS ) OOE -- Offshore Operation Engineer ( senior technical authority on an offshore oil platform ) OOIP -- Original Oil In Place OOT / S -- Out of Tolerance / Straightness OPITO - Offshore Petroleum Industry Training Organization OPEC -- Organization of Petroleum Exporting Countries OPL -- Operations Log OPRES -- Overpressure Log OPS -- Operations Report ORICO -- Oriented Core Data Report ORM - Operability Reliability Maintainability ORRI - Overriding Royalty Interest OS&D - Over, Short & Damage ( Report ) OSV - Offshore Supply Vessel OT -- A Well On Test OT -- Off Tree OTDR -- Optical Time Domain Reflectometry OTIP -- Operational Testing Implementation Plan OTL -- Operations Team Leader OTSG - One - time Through Steam Generator OWC -- Oil Water Contact OUT -- Outpost, Lahee classification OUT -- Oil Up To OVCH -- Oversize Charts OVID -- Offshore Vessel Inspection Database OWC -- Oil - Water Contact P -- Producing well ( as opposed to NP -- Non Producing ) P&A -- plug and abandon ( well ) PA - Producing Asset PA - Polyamide PA - Producing Asset with Exploration Potential PACO - Process, Automation, Control And Optimisation PACU - Packaged Air Conditioning Unit PADPRT -- Pressure Assisted Drillpipe Running Tool PAGA -- Public Address General Alarm PAL -- Palaeo Chart PALYN -- Palynological Analysis Report PAR -- Pre-Assembled Rack PAU -- Pre-Assembled Unit PBDMS -- Playback DMSLS Log PBHL - Proposed Bottom Hole Location PBR -- Polished Bore Receptacle ( component of a completion string ) PBD -- Pason Billing System PBTD -- Plug Back Total Depth PBU -- Pressure Build Up ( applies to integrity testing on valves ) PCA - Production Concession Agreement PCB -- Poly Chlorinated BiPhenyl PCCC - Pressure Containing anti ‐ Corrosion Caps PCCL -- Perforation Casing Collar Locator Log PCDC - Pressure Cased Directional ( Geometry i.e. borehole survey ) MWD tool PCDM -- Power and Control Distribution Module PCKR -- Packer PCMS - Polymer Coupon Monitoring System PCN - Process Control Network PCO -- Pre-commission Preparations ( pipeline ) PCOLL -- Perforation and Collar PCP - Progressing Cavity Pump PCPT - Piezo - Cone Penetration Test PDC -- Perforation Depth Control PDC -- Polycrystalline Diamond Compact ( a type of drilling bit ) PDG / PDHG -- Permanent Downhole Gauge PDKL -- PDK Log PDKR -- PDK 100 Report PDM - Positive Displacement Motor PDP -- Proved Developed Producing ( Reserves ) PDPM -- Power Distribution Protection Module PDNP -- Proved Developed Not Producing PDR - Physical Data Room PDT - Differential Pressure Transmitter PE - Product Emulsion PE -- Petroleum Engineer PE -- Professional Engineer PE - Polyethylene PEA -- Palaeo Environment Study Report PEDL -- Petroleum Exploration and Development Licence ( United Kingdom ), introduced in the 8th Onshore Licensing Round PEFS - Process Engineering Flow Scheme ( a confusing name for P&ID ) PENL -- Penetration Log PEP -- PEP Log PERDC -- Perforation Depth Control PERFO -- Perforation Log PERM -- Permeability PERML -- Permeability Log PESGB -- Petroleum Exploration Society of Great Britain PETA -- Petrographical Analysis Report PETD -- Petrographic Data Log PETLG -- Petrophysical Evaluation Log PETPM -- Petrography Permeametry Report PETRP -- Petrophysical Evaluation Report PEX - Platform Express toolstring ( resistivity, porosity, imaging ) PFD - Process Flow Diagram PFE -- Plate / Frame Heat Exchanger PFHE -- Plate Fin / Frame Heat Exchanger PFC -- PFC Log PFPG -- Perforation Plug Log PFREC -- Perforation Record Log PG -- Pressure Gauge ( Report ) PGB -- Permanent Guide Base PGOR -- Produced Gas Oil Ratio PH -- Phasor Log PHASE -- Phasor Processing Log PHB - Pre-Hydrated Bentonite PHC - Passive Heave Compensator PHOL -- Photon Log PHPU - Platform Hydraulic Power Unit PHPA - Partially hydrolyzed polyacrylamide ( mud ) PHYFM -- Physical Formation Log PI -- Productivity Index PI -- Permit Issued P&ID - Process and Instrument Diagram PINTL -- Production Interpretation PIP - Pump Intake Pressure PIP -- Pipe in Pipe PIT - Pump Intake Temperature PJSM - Per Job Safety Meeting PL -- Production Licence PLEM -- Pipeline End Manifold PLES - Pipeline End Structure PLET -- Pipeline End Termination PLG -- Plug Log PLR -- Pig Launcher / Receiver PLS -- Position Location System PLSV - Pipelay Support Vessel PLT -- Production Logging Tool PLTQ -- Production Logging Tool Quicklook Log PLTRE -- Production Logging Tool Report PLQ - Permanent Living Quarters PMI -- Positive Material Identification PMOC - Project Management of Change PMR - Precool Mixed Refrigerant PMV - Production Master Valve PNP - Proved Not Producing POB -- Personnel on Board POBM -- Pseudo-Oil - Based Mud POD - Plan of Development POF -- Permanent Operations Facility POOH / POH -- Pull Out Of Hole PON -- Petroleum Operations Notice ( United Kingdom ) POP - Pump Out Plug POR -- Density Porosity Log POSFR -- Post Fracture Report POSTW -- Post Well Appraisal Report POSWE -- Post Well Summary Report PP -- DXC Pressure Plot Log PP -- Pump Pressure ppb - Pounds Per Barrel PPC - Powered Positioning Caliper ( Schlumberger dual - axis wireline caliper tool ) ( 12 ) ppcf -- Pounds Per Cubic Foot PPE -- Preferred Pressure End PPE - Personal Protective Equipment PPFG - Pore Pressure / Fracture Gradient ppg -- Pounds Per Gallon PPI -- Post Production Inspection / Intervention PPI -- Post Pipelay Installation pptf -- Pounds ( per square inch ) Per Thousand Feet ( of depth ) -- a unit of fluid density / pressure PPS -- Production Packer Setting PQR - Procedure Qualification Record PR2 -- Testing regime to API6A Annex F PRA -- Production Reporting & Allocation PREC -- Perforation Record PRESS -- Pressure Report PRL - Polished Rod Liner PROD -- Production Log PROTE -- Production Test Report PROX -- Proximity Log PRSRE -- Pressure Gauge Report PSANA -- Pressure Analysis PSA -- Production Service Agreement PSA -- Production Sharing Agreement PSC -- Production Sharing Contract PSD -- Planned Shut - Down PSD - Pressure Safety Device PSIA -- Pounds Per Square Inch Atmospheric PSIG -- Pounds Per Square Inch Gauge PSL -- Product Specification Level PSLOG -- Pressure Log PSM - Process Safety Management PSP -- Pseudostatic Spontaneous Potential PSP - Positive Sealing Plug PSPL -- PSP Leak Detection Log PSSR - Pre-Startup Safety Review PSQ -- Plug Squeeze Log PST -- PST Log PSV -- Pipe / Platform Supply Vessel PSV -- Pressure Safety Valve PSVAL -- Pressure Evaluation Log PTA / S -- Pipeline Termination Assembly / Structure PTO - Permit to Operate PTRO - Test rack opening pressure ( For a gas lift valve ) PTSET -- Production Test Setter PTTC -- Petroleum Technology Transfer Council, United States PTW -- Permit to Work PU -- Pick Up ( tubing, rods, power swivel, etc. ) PUD -- Proved Undeveloped Reserves PUN -- Puncher Log PUR -- Plant Upset Report PUWER -- Provision and Use of Work Equipment Regulations PV -- Plastic Viscosity PVDF - Polyvinylidene Fluoride PVSV - Pressure Vacuum Safety Valve PVT -- Pressure Volume Temperature PVTRE -- Pressure Volume Temperature Report PW -- Produced Water PWD - Pressure While Drilling. ( See also Annular - APWD. ) PWB -- Production Wing Block ( XT ) PWHT -- Post Weld Heat Treat PWRI -- Produced Water Re-Injection PWV -- Production Wing Valve ( also known as a flow wing valve on a Xmas tree ) Q QC -- Quality control QCR -- Quality Control Report QL -- Quicklook Log R / B - RACK BACK R&M - Repair and Maintenance RAC -- Ratio Curves RACI -- Responsible / Accountable / Consulted / Informed RAT - Riser Assembly Tower RAM -- Reliability, Availability, and Maintainability RAWS -- Raw Stacks VSP Log RBP -- Retrievable Bridge Plug RBS - Riser Base Spool RCA -- Root Cause Analysis RCKST -- Rig Checkshot RCD -- Rotating Control Device RCI -- Reservoir Characterization Instrument ( for downhole fluid measurements e.g. spectrometry, density, etc. ) ( 13 ) RCL -- Retainer Correlation Log RCM -- Reliability Centred Maintenance RCR -- Remote Component Replacement ( Tool ) RCU -- Remote Control Unit RDMO - Rig Down Move Out RDRT - Rig Down Rotary Tools RDVI - Remote Digital Video Inspection RDWL - Rig Down Wireline RE -- Reservoir Engineer REOR -- Reorientation Log RE-PE -- Re-Perforation Report RESAN -- Reservoir Analysis RESDV - Riser Emergency Shut Down Valve RESEV -- Reservoir Evaluation RESFL -- Reservoir Fluid RESI -- Resistivity Log RESL -- Reservoir Log RESOI -- Residual Oil REZ -- Renewable Energy Zone ( United Kingdom ) RF -- Recovery Factor RFCC - Ready for Commissioning Certificate RFLNG -- Ready for Liquefied Natural Gas RFMTS -- Repeat Formation Tester RFO -- Ready for operations ( pipelines / cables ) RFSU -- Ready For Start - Up RFT -- Repeat Formation Tester RFTRE -- Repeat Formation Tester Report RFTS -- Repeat Formation Tester Sample RHA - Riser Heel Anchor RHD - Rectangular Heavy Duty - usually screens used for shaking. RIGMO -- Rig Move RIH -- Run In Hole RIMS -- Riser Integrity Monitoring System RITT -- Riser Insertion Tube ( Tool ) RKB -- Rotary Kelly Bushing ( a datum for measuring depth in an oil well ) RLOF -- Rock Load - out Facility RMLC -- Request for Mineral Land Clearance RMP -- Reservoir Management Plan RMS -- Ratcheting Mule Shoe RMS -- Riser Monitoring System RNT -- RNT Log ROCT -- Rotary Coring Tool ROP -- Rate of Penetration ROP - Rate of Perforation ROT -- Remote Operated Tool ROV / WROV -- Remotely Operated Vehicle / WorkClass Remotely Operated Vehicle, used for subsea construction and maintenance ROZ -- Recoverable Oil Zone ROWS -- Remote Operator Workstation RPCM -- Ring Pair Corrosion Monitoring RPM -- Revolutions Per Minute, ( Rotations Per Minute ) RRC - Rail Road Commission ( governs oil and gas production in Texas ) RROCK -- Routine Rock Properties Report RSES -- Resonsible for Safety and Environment on Site RSPP - a publicly traded, oil and gas producer focused on horizontal drilling of multiple stacked pay zones in the oil - rich Permian Basin RSS -- Rig Site Survey RSS -- Rotary Steerable Systems RST -- Reservoir Saturation Tool ( Schlumberger ) Log RTMS -- Riser Tension Monitoring System RTE - Rotary Table Elevation RTP - Return to production RTTS -- Retrievable Test - Treat - Squeeze ( packer ) RU - Rig Up RURT - Rig Up Rotary Tools RVI - Remote Video Inspection RWD -- Reaming While Drilling SABA -- Supplied Air Breathing Apparatus SAGD -- Steam Assisted Gravity Drainage SALM -- Single Anchor Loading Mooring SAM -- Subsea Accumulator Module SAML -- Sample Log SAMTK -- Sample Taker Log SANDA -- Sandstone Analysis Log SAPP -- sodium acid pyrophosphate SAS - Safety and Automation System SAT -- SAT Log SAT -- Site Acceptance Test SB -- SIT - BO Log SBF -- Synthetic Base Fluid SBM -- Synthetic Base Mud SBT -- Segmented Bond Tool SC -- Seismic Calibration SCADA -- Supervisory Control and Data Acquisition SCAL -- Special core analysis SCAP -- Scallops Log SCBA -- Self - Contained Breathing Apparatus SCC - System Completion Certificate SCDES -- Sidewall Core Description SCF -- standard cubic feet ( of natural gas ) SCHLL -- Schlumberger Log also SCHLO, SCHLU SCM ( MB ) -- Subsea Control Module ( Mounting Base ) SCO -- Synthetic crude oil SCRS -- Slow Circulation Rates SCSG -- type of pump SCSSV -- Surface Controlled Subsurface Safety Valve SDON - Shut Down Over Night SPCU - Subsea Control Unit SCVF - Surface Casing Vent Flow. It 's kind of test SD -- Sonic Density SDFD -- Shut Down For Day SDFN -- Shut Down For Night SDIC -- Sonic Dual Induction SDL -- Supplier Document List SDM / U -- Subsea Distribution Module / Unit SDPBH -- SDP Bottom Hole Pressure Report SDSS - Super Duplex Stainless Steel SDT -- Step Draw - down Test ( sometimes SDDT ) SDU / M -- Subsea Distribution Unit / Module SEA -- Strategic Environmental Assessment ( United Kingdom ) SECGU -- Section Gauge Log SEDHI -- Sedimentary History SEDIM -- Sedimentology SEDL -- Sedimentology Log SEDRE -- Sedimentology Report SEM -- Subsea Electronics Module Semi ( or Semi-Sub ) -- Semi-Submersible Drilling Rig SEPAR -- Separator Sampling Report SEQSU -- Sequential Survey SFERAE -- Global Association for the use of knowledge on Fractured Rock in a state of Stress, in the field of Energy, Culture and Environment SFL -- Steel Flying Lead SG -- Static Gradient, Specific Gravity SGR - Shale Gouge Ratio SGS -- Steel Gravity Structure SGSI -- Shell Global Solutions International SGUN -- Squeeze Gun SHA -- Sensor Harness Assembly SHC - System Handover Certificate SHDT -- Stratigraphic High Resolution Dipmeter Tool SHO -- Stab and Hinge Over SHOCK -- Shock Log SHOWL -- Show Log SI -- Shut In well SI - Structural Integrity SI - Scale Inhibitor SI / TA -- Shut In / Temporarily Abandoned SIA - Social Impact Assessment SIC - Subsea installation Contractor SICP -- Shut - In Casing Pressure SIDPP -- Shut - In Drill Pipe Pressure SIDSM -- Sidewall Sample SIGTTO -- Society of International Gas Tanker and Terminal Operators SIMCON -- Simultaneous Construction SIMOPS -- Simultaneous Operations SIP -- Shut In Pressure SIPES -- Society of Independent Professional Earth Scientists, United States SIS - Safety Instrumented System SIT -- System Integration Test FR SIT -- Field Representation SIT SIT - ( Casing ) Shoe Integrity Test SITHP -- Shut In Tubing Hanger / Head Pressure ( another term for CITHP ) SITT -- Single TT Log SIWHP -- Shut - in Well Head Pressure SKPLT -- Stick Plot Log SL -- Seismic Lines SLS -- SLS GR Log SLT -- SLT GR Log SM or S / M - Safety Meeting SMA -- Small Amount SMLS -- Seamless PipeMPP : SMO -- Suction Module SMPC - Subsea Multiphase Pump : Pump, which can increase flowrate and pressure of the untreated wellstream SN -- Seat Nipple SNAM -- Societá NAzionale Metanodotti now Snam S.p.A. ( Italy ) SNP -- Sidewall Neutron Porosity SNS -- Southern North Sea SOBM -- Synthetic Oil Based Mud SOLAS -- Safety of Life at Sea SONCB -- Sonic Calibration Log SONRE -- Sonic Calibration Report SONWR -- Sonic Waveform Report SONWV -- Sonic Waveform Log SOP - Shear Out Plug SOW _ Slip - On Wellhead SP - Set Point SP -- Shot point ( geophysics ) SP -- Spontaneous Potential ( Well Log ) SPAMM - Subsea Pressurization and Monitoring Manifold SPCAN -- Special core analysis SPCU - Subsea Power and Control Unit SPE -- Society of Petroleum Engineers SPEAN -- Spectral Analysis SPEL -- Spectralog SPFM -- Single Phase Flow Meter SPH -- SPH Log SPHL - Self Propelled Hyperbaric Lifeboats SPM -- Side Pocket Mandrel or Strokes Per Minute ( of a positive - displacement pump ) SPMT -- Self - Propelled Modular Transporter SPOP -- Spontaneous Potential Log SPP -- Stand Pipe Pressure SPROF -- Seismic Profile SPS -- Subsea Production Systems SPT -- Shallower Pool Test, Lahee classification SPWLA - Society of Petrophysicists and Well Log Analysts SQL -- Seismic Quicklook Log SQZ - Squeeze job SR -- Shear Rate SRD -- Seismic Reference Datum, an imaginary horizontal surface at which TWT is assumed to be zero SREC -- Seismic Record Log SRT -- Site Receival Test SS -- Subsea, as in a datum of depth, e.g. TVDSS ( True Vertical Depth Subsea ) SSCC -- Sulphide Stress Corrosion Cracking SSCP - Subsea Cryogenic Pipeline SSCS -- Subsea Control System SSD -- Sub Sea Level depth ( in Metres or Feet, positive value in downwards direction with respect to the Geoid ) SSD -- Sliding Sleeve Door SSFP - Subsea Flowline & Pipeline SSG -- Sidewall Sample Gun SSIV -- Subsea Isolation Valve SSTV - Subsea Test Valve SSM -- Subsea Manifolds SSMAR -- Synthetic Seismic Marine Log SSPLR -- Subsea Pig Launcher / Receiver SSSL -- Supplementary Seismic Survey Licence ( United Kingdom ), a type of onshore licence SSSV -- Sub-Surface Safety Valve SSTT -- Subsea Test Tree SSU -- Subsea Umbilicals SSV -- Surface Safety Valve SSWI -- Subsea Well Intervention STAB -- Stabiliser STAGR -- Static Gradient Survey Report STB -- stock tank barrel STC -- STC Log STD - 2 - 3 joints of tubing STFL -- Steel Tube Fly Lead STG - Steam Turbine Generator ( not to be confused with a GTG ) STGL -- Stratigraphic Log STIMU -- Stimulation Report STKPT -- Stuck Point STL -- STL Gamma Ray Log STL - Submerged Turret Loading STRAT -- Stratigraphy, stratigraphic STRRE -- Stratigraphy Report STOIIP -- Stock Tank Oil Initially In Place STOP -- Safety Training Observation Program STP - Submerged Turret Production STSH -- String Shot STTR -- Single Top Tension Riser ST&C - Short Thread and Coupled STC - Short Thread and Coupled STU - Steel Tube Umbilical SUML -- Summarised Log SUMRE -- Summary Report SUMST -- Geological Summary Sheet SURF -- Subsea / Umbilicals / Risers / Flowlines SURFR -- Surface Sampling Report SURRE -- Survey Report SURU - Start - up Ramp - up SURVL -- Survey Chart Log SUT ( A / B ) -- Subsea Umbilical Termination ( Assembly / Box ) SUTU -- Subsea Umbilical Termination Unit SW -- Salt Water SWC - Side Wall Core SWD -- Salt Water Disposal Well SWE -- Senior Well Engineer SWHE -- Spiral Wound Heat Exchanger SWOT -- Strengths, Weaknesses, Opportunities and Threats SWT - Surface Well Testing SV -- Sleeve Valve or Standing Valve SVLN - Safety Valve Landing Nipple SWLP - seawater lift pump SYNRE -- Synthetic Seismic Report SYSEI -- Synthetic Seismogram Log T -- well flowing to Tank TA -- Temporarily Abandoned well TA -- Top Assembly TAC -- Tubing Anchor TAGOGR -- Thermally Assisted Gas / Oil Gravity Drainage TAN - Total Acid Number TAPLI -- Tape Listing TAPVE -- Tape Verification TAR -- True Amplitude Recovery TB -- Tubing Puncher Log TBE -- Technical Bid Evaluation TBG - Tubing TBT -- Through Bore Tree / Toolbox Talk TCA -- Total Corrosion Allowance TCC - Tungsten Carbide Coating TCCC - Transfer of Care, Custody and Control TCF -- Temporary Construction Facilities TCF -- Trillion Cubic Feet ( of gas ) TCI -- Tungsten Carbide Insert ( a type of rollercone drillbit ) TCP - Tubing Conveyed Perforating ( Gun ) TCPD -- Tubing - Conveyed Perforating Depth TCU - Thermal Combustion Unit TD -- Target Depth TD -- Total Depth ( depth of the end of the well ; also a verb, to reach the final depth, used as an acronym in this case ) TDD -- Total Depth ( Driller ) TDC - Total Drilling Cost TDL -- Total Depth ( Logger ) TDM -- Touch Down Monitoring TDP - Touch Down Point TDS -- Top Drive System TDS -- Total Dissolved Solids TDT -- Thermal Decay Time Log TDTCP -- TDT CPI Log TDT GR -- TDT Gamma Ray Casing Collar Locator Log TEFC -- Totally Enclosed Fan Cooled TEG -- Tri-Ethylene Glycol TEG - Thermal Electric Generator TELER -- Teledrift Report TEMP - Temperature Log TFE -- TotalFinaElf ( obsolete ; Now Total S.A. ) major French multinational oil company TFL -- Through Flow Line TFM -- TaskForceMajella Research Project TGB -- Temporary Guide Base TGT / TG - Tank Gross Test TGOR -- Total Gas Oil Ratio ( GOR uncorrected for gas lift gas present in the production fluid ) TH -- Tubing Hanger THD -- Tubing Head THERM -- Thermometer Log THP -- Tubing Hanger Pressure ( pressure in the production tubing as measured at the tubing hanger ) THRT -- Tubing Hanger Running Tool THS - Tubing Head Spool TIE -- Tie In Log TIH -- Trip Into Hole TIW -- Texas Iron Works ( pressure valve ) TIEBK -- Tieback Report TLI -- Top of Logging Interval TLOG -- Technical Log TLP - Tension - leg platform TMCM -- Transverse Mercator Central Meridian TMD -- Total Measured Depth in a wellbore TNDT -- Thermal Neutron Decay Time TNDTG -- Thermal Neutron Decay Time / Gamma Ray Log TOC -- Top Of Cement TOC -- Total Organic Content / Carbon TOF - Top of Fish TOFD -- Time of first data sample ( on seismic trace ) TOFS -- Time of first surface sample ( on seismic trace ) TOH -- Trip Out of Hole TOOH -- Trip Out Of Hole TOL -- Top Of Liner TORAN -- Torque and Drag Analysis TPC - Temporary Plant Configuration TPERF -- Tool Performance TQM -- Total Quality Management TRCFR -- Total Recordable Case Frequency Rate TRT -- Tree Running Tool TR -- Temporary Refuge TRA -- Top Riser Assembly TRA -- Tracer Log TRACL -- Tractor Log TRD -- Total Report Data TREAT -- Treatment Report TREP -- Test Report TRIP -- Trip Condition Log TRS - Tubing Running Services TRSV -- Tubing Retrievable Safety Valve TRSCSSV -- Tubing Retrievable Surface Controlled Sub-Surface Valve TRSCSSSV -- Tubing Retrievable Surface Controlled Sub-Surface Safety Valve TSA -- Thermally Sprayed Aluminium TSI -- Temporarily Shut In TSS - Total Suspended Solids TSOV - Tight shut off valve TT -- Torque Tool TT -- Transit Time Log TTVBP - Through Tubing Vented Bridge Plug TTRD -- Through Tubing Rotary Drilling TUC - Topside Umbilical Connection TUC - Turret Utility Container TUM -- Tracked Umbilical Machine TUPA -- Topside Umbilical Panel Assembly TUTB -- Topside Umbilical Termination Box / Unit / Assembly ( TUTU ) TVBDF -- True Vertical Depth Below Derrick Floor TV / BIP -- Ratio of Total Volume ( ore and overburden ) to Bitumen In Place TVD -- True Vertical Depth TVDPB -- True Vertical Depth Playback Log TVDSS -- True Vertical Depth Sub Sea TVELD -- Time and Velocity to Depth TVRF -- True Vertical Depth versus Repeat Formation Tester TWT -- Two - Way Time ( seismic ) TWTTL -- Two - Way Travel Time Log U UBHO - Universal Bottom Hole Orientation ( sub ) UBI -- Ultrasonic Borehole Imager UBIRE -- Ultrasonic Borehole Imager Report UCH - Umbilical Connection Housing UCR - Unsafe Condition Report UCSU -- Upstream Commissioning and Start - Up UFJ -- Upper Flex Joint UFR -- Umbilical Flow lines & Risers UGF -- Universal Guide Frame UIC -- Underground Injection Control UKCS -- United Kingdom Continental Shelf UKOOA -- United Kingdom Offshore Operators Association UKOOG -- United Kingdom Onshore Operators Group ULCGR -- Uncompressed LDC CNL Gamma Ray Log UMCA -- Umbilical Midline Connection Assembly UMV -- Upper Master Valve ( from a Xmas tree ) UPB - Unmanned Production Buoy UPL - Upper pressure limit UPR -- Upper Pipe Ram UPT - Upper pressure threshold URA -- Upper Riser Assembly URT -- Universal Running Tool USBL - Ultra-short - baseline systems USIT - Ultrasonic imaging tool ( cement bond logging ) ( 14 ) USGS -- United States Geological Survey UTA / B -- Umbilical Termination Assembly / Box UTAJ - Umbilical Termination Assembly Jumper UTM -- Universal Transverse Mercator UWI -- Unique Well Identifier UWILD -- Underwater Inspection in Lieu of Dry Docking V VDENL -- Variation Density Log VDL -- VDL Log ( Variable Density Log ) VDU -- Vacuum Distillation Unit, used in processing bitumen VELL -- Velocity Log VERAN -- Verticality Analysis VERIF -- Verification List VERLI -- Verification Listing VERTK -- Vertical Thickness VFC - Volt Free Contact VIR -- Value Investment Ratio VISME -- Viscosity Measurement VIV -- Vortex induced Vibration VLP -- Vertical Lift Performance VLS - Vertical Lay System VLTCS -- Very Low Temperature Carbon Steel VO -- Variation Order VOCs -- Volatile Organic Compounds VOR -- Variation Order Request VRS - Vapor Recovery System VRR -- Voidage Replacement Ratio VS -- Vertical Section VSD -- Variable Speed Drive VSI - Versatile Seismic Imager ( Schlumberger VSP tool ) VSP -- Vertical Seismic Profile VSPRO -- Vertical Seismic Profile VTDLL -- Vertical Thickness Dual Laterolog VTFDC -- Vertical Thickness FDC CNL Log VTISF -- Vertical Thickness ISF Log VWL -- Velocity Well Log VXT -- Vertical Christmas Tree W -- Watt W / C -- Water Cushion WCC - Work Control Certificate WABAN -- Well Abandonment Report WAC - Weak Acid Cation WAG -- Water Alternating Gas ( describes an injection well which alternates between water and gas injection ) WALKS -- Walkaway Seismic Profile WAS - Well Access System WATAN -- Water Analysis WAV3 -- Amplitude ( in Seismics ) WAV4 -- Two Way Travel Time ( in Seismics ) WAV5 -- Compensate Amplitudes WAVF -- Waveform Log WBM -- Water - Based drilling Mud WBS - Well Bore Schematic WBS - Work Breakdown Structure WC -- Watercut / Wildcat well WCT - Wet Christmas Tree WE -- Well Engineer WEG -- Wireline Entry Guide WELDA -- Well Data Report WELP -- Well Log Plot WEQL -- Well Equipment Layout WESTR -- Well Status Record WESUR -- Well Summary Report WF -- Water Flooding WGFM - Wet Gas Flow Meter WFAC -- Waveform Acoustic Log WGEO -- Well Geophone Report WGR - Water Gas Ratio WGFM -- Wet Gas Flow Meter WGUNT -- Water Gun Test Wh -- White WH -- Well History WHIG -- Whitehouse Gauge WHM -- Wellhead Maintenance WHP -- Wellhead Pressure WHSIP - Wellhead Shut - In Pressure WI -- Water Injection WI -- Working Interest WIKA - Definition Needed WIR - Water Intake Risers WIT - Water Investigation Tool WITS -- Well Site Information Transfer System WIPSP -- WIP Stock Packer WLC -- Wireline Composite Log WLL -- Wireline Logging WLSUM -- Well Summary WLTS Well Log Tracking System WLTS -- Well Log Transaction System WM - Wet Mate WHM -- Wellhead Maintenance WHMIS -- WorkPlace Hazardous Material Information Systems WHP -- Wellhead Pressure WO -- Well in Work Over WO / O -- Waiting on Orders WOA -- Well Operations Authorization WOB -- Weight On Bit WOC -- Wait on Cement WOC -- Water Oil Contact ( or Oil Water Contact ) WOE -- Well Operations Engineer ( a key person of Well services ) WOM -- Wait ( ing ) on Material WOR -- Water - Oil Ratio WORKO -- Workover WOS -- West of Shetland, oil province on the UKCS WOW -- Wait ( ing ) On Weather WP -- Well Proposal or Working Pressure WPC -- Water Pollution Control WPLAN -- Well Course Plan WPQ / S / T -- Weld Procedure Qualification / Specification / Test WPR -- Well Prognosis Report WQ -- A textural parameter used for CBVWE computations ( Halliburton ) WQCA -- Water Quality Control Act WQCB -- Water Quality Control Board WR -- Wireline Retrievable ( as in a WR Plug ) WR -- Wet Resistivity WRS -- Well Report Sepia WRSCSSV -- Wireline Retrievable Surface Controlled Sub-Surface Valve WSCL -- Well Site Core Log WSE -- Well Seismic Edit WSERE -- Well Seismic Edit Report WSHT -- Well Shoot WSL -- Well Site Log WSO -- Water Shut Off WSOG -- Well Specific Operation Guidelines WSP -- Well Seismic Profile WSR -- Well Shoot Report WSS -- Well Services Supervisor ( leader of Well services at the wellsite ) WSS -- Working Spread Sheet ( for logging ) WSSAM -- Well Site Sample WSSOF -- WSS Offset Profile WSSUR -- Well Seismic Survey Plot WSSVP -- WSS VSP Raw Shots WSSVS -- WSS VSP Stacks WST - Well Seismic Tool ( checkshot ) WSTL -- Well Site Test Log WSU -- Well Service Unit wt - wall thickness WT -- Well Test WTI -- West Texas Intermediate benchmark crude WUT -- Water Up To WVS -- Well Velocity Survey X XC -- Cross-connection, cross correlation XL -- or EXL, Exploration Licence ( United Kingdom ), a type of onshore licence issued between the First Onshore Licensing Round ( 1986 ) and the Sixth ( 1992 ) Xln -- Crystalline ( minerals ) XLPE - Cross-linked Polyethylene XMAC -- Cross-Multipole Array Acoustic log XMAC - E -- XMAC Elite ( Next generation of XMAC ) XMRI -- Extended Range Micro Imager ( Halliburton ) XMT / XT / HXT -- XMas Tree ( Christmas Tree, the valve assembly on a production well - head ) XO -- Cross-Over XOM -- Exxon Mobil XOV -- Cross-Over Valve XPERM -- Matrix Permeability in the X-Direction XPHLOC -- Crossplot Selection for XPHI XPOR -- Crossplot Porosity XPT -- Formation Pressure Test log ( Schlumberger ) XV - On / Off Valve ( Process Control ) XYC -- XY Calliper Log ( Halliburton ) Y yd -- yard yl -- Holdup Factor YP -- Yield Point yr -- year Z Z -- depth, in the geosciences referring to the depth dimension in any x, y, z data ZDENP -- Density Log ZDL -- Compensated Z - Densilog ZLD - Zero Liquid Discharge ZOI -- Zone of Influence Zug Put abbreviations that you do not know in this section. Other people might have an idea. If you received an answer, delete the abbreviation from this section, and add it to its alphabetical section ( If it is not there yet ). BOL CK - Context : Notes on drilling logs OOA -- Context : OOA Group MDT - Modular Dynamic Tester < Schlumberger > RDT - Reservoir Description Tool < Halliburton > SPM - Context : Notes on drilling logs SPR - Context : Notes on drilling logs SPUD SPV THF URB WWS See also Oilfield terminology Petroleum industry Petroleum Primary energy Benchmarks Argus Sour Bonny Light Brent Dubai Indian Basket Indonesian Isthmus - 34 Light Japan Cocktail OPEC Reference Basket Tapis Urals West Texas Intermediate Western Canadian Select Data Natural gas Consumption Production Reserves Imports Exports Price Petroleum Consumption Production Reserves Imports Exports Price ( of gasoline and diesel ) Exploration Core sampling Geophysics Integrated asset modelling Petroleum engineering Reservoir simulation Seismic to simulation Petroleum geology Petrophysics Reflection seismology ( Seismic inversion ) Seismic source Drilling Blowout Completion ( Squeeze job ) Differential sticking Directional drilling ( Geosteering ) Drilling engineering Drilling fluid ( invasion ) Drill stem test Lost circulation Measurement Tracers Underbalanced drilling Well logging Production Petroleum fiscal regime Concessions Production sharing agreements Artificial lift Pumpjack Submersible pump ( ESP ) Gas lift Downstream Enhanced oil recovery ( EOR ) Steam injection Gas reinjection Midstream Petroleum product Pipeline transport Refining Upstream Water injection Well intervention XT History 1967 Oil Embargo 1973 oil crisis 1979 energy crisis 1980s oil glut 1990 oil price shock 2000s energy crisis 2010s oil glut Founders History of the petroleum industry Nationalization OPEC GECF Seven Sisters Standard Oil Oil market timelines Provinces and fields List of natural gas fields List of oil fields East Midlands Oil Province East Texas Gulf of Mexico Niger Delta North Sea Permian Basin Persian Gulf Prudhoe Bay Oil Field Russia Venezuela Western Canadian Sedimentary Basin Other topics Acronyms Oil shale gas Peak oil mitigation timing People Petrocurrency Petrodollar recycling Shale gas Swing producer Unconventional oil heavy crude oil sands oil shale Companies and organisations Major petroleum companies Supermajors BP Chevron Eni ExxonMobil Royal Dutch Shell Total National oil companies ADNOC ( UAE ) CNOOC ( China ) CNPC ( China ) Ecopetrol ( Colombia ) Gazprom ( Russia ) Iraq National Oil Company Indian Oil Corporation KazMunayGas ( Kazakhstan ) Kuwait Petroleum Corporation Lotos ( Poland ) Nigerian National Petroleum Corporation NIOC ( Iran ) NISOC ( Iran ) OGDCL ( Pakistan ) ONGC ( India ) PDVSA ( Venezuela ) PKN Orlen ( Poland ) Pemex ( Mexico ) Pertamina ( Indonesia ) PetroBangla ( Bangladesh ) Petrobras ( Brazil ) PetroChina Petronas ( Malaysia ) Petrovietnam PTT ( Thailand ) Qatar Petroleum Rosneft ( Russia ) Saudi Aramco ( Saudi Arabia ) Sinopec ( China ) SOCAR ( Azerbaijan ) Sonangol ( Angola ) Sonatrach ( Algeria ) Statoil ( Norway ) TPAO ( Turkey ) YPF ( Argentina ) Energy trading Glencore Gunvor Mercuria Naftiran Intertrade Trafigura Vitol Other Anadarko Apache BG Group Cenovus Energy Compañía Española de Petróleos ConocoPhillips Devon Galp Energia Hess Husky Energy Imperial Oil Lukoil Marathon Oil Nippon Oil Occidental OMV Port Harcourt Refining Company Reliance Industries Repsol Suncor Energy Surgutneftegas TNK - BP Tullow Oil Tüpraş Major services companies Amec Foster Wheeler Baker Hughes Cameron CGG CH2M Hill Chicago Bridge & Iron Company China Oilfield Services Enbridge Ensco GE Oil & Gas Halliburton Nabors Industries Naftiran Intertrade National Oilwell Varco Petrofac Saipem Schlumberger Snam Subsea 7 TransCanada Transocean Weatherford Wood Group Other International Association of Oil & Gas Producers International Energy Agency International Petroleum Exchange OPEC Society of Petroleum Engineers World Petroleum Council Commons References Jump up ^ http://www.aade.org Jump up ^ http://www.aapg.org ^ Jump up to : http://www.standard.no/PageFiles/1315/D-010r3.pdf Jump up ^ Bureau of Safety and Environmental Enforcement Jump up ^ van Dijk, J.P. ( 1993 ) ; Three - dimensional quantitative restoration of central Mediterranean Neogene basins. In : Spencer, A.M. ( Ed. ). Generation, accumulation and production of Europe 's hydrocarbons III. Special publication of the European Association of Petroleum Geologists No. 3, Springer - Verlag, Heidelberg, 267 -- 280. Jump up ^ http://www.eaeg.org Jump up ^ http://www.eni.com Jump up ^ van Dijk, J.P. ( 1998 ) ; Analysis and modelling of fractured reservoirs. SPE paper 50570, Europec ; European Petroleum Conference, Vol. 1, 31 -- 43. Jump up ^ van Dijk, J.P. ( 1996 ) ; Fracture potential and domain mapping ; a new technique applied to Maastrichtian - Danian chalk in Block 2 / 5 ( Norway ). In : Chalk Geoscience Workshop. PL006, 018, 067, 2 -- 3 Dec 1996, NPD Stavanger, Extended Abstracts. Jump up ^ ( 1 ) Jump up ^ `` OCTG ( casing and tubing ) ''. Network International Oilfield Glossary. Network International. Jump up ^ http://www.sferae.org Jump up ^ http://www.snam.it Jump up ^ http://www.spe.org Jump up ^ http://www.spwla.org Jump up ^ http://www.total.com Jump up ^ http://www.slb.com/services/characterization/geophysics/wireline/vertical_seismic_imager.aspx External links Network International Glossary July - 11 Oil Field Acronyms and Abbreviations July - 11 Oil Gas Technical Terms Glossary July - 11 Schlumberger Oilfield Glossary July - 11 Oil Drum Acronyms July - 11 Oiltrashgear Oilfield Acronyms & Terminology November - 15 OCIMF Acronyms Oct - 11 SPWLA Petrophysical Curve Names and Mnemonics Oct - 11 American Royalty Council Glossary Nov - 11 Technip Glossary Apr - 13 Retrieved from `` https://en.wikipedia.org/w/index.php?title=List_of_abbreviations_in_oil_and_gas_exploration_and_production&oldid=804969300 '' Categories : Petroleum industry Oil wells Oil platforms Drilling technology Energy - related lists Lists of acronyms Hidden categories : Use dmy dates from September 2012 Incomplete lists from July 2014 Talk Contents About Wikipedia Add links This page was last edited on 12 October 2017, at 06 : 39. 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Question: what does fid mean in oil and gas
Answer: final investment decision