Oil Field Acronyms

#

  • 2D - Two dimensional (geophysics)
  • 2P - Proved and Probable Reserves
  • 3D - Three dimensional (geophysics)

A

  • AADE - American Association of Drilling Engineers
  • AAODC - American Association of Oilwell Drilling Contractors (obsolete; superseded by IADC)
  • ABAN - Abandonment
  • ACOU - Acoustic
  • ACQU - Acquisition Log
  • ADROC - Advanced Rock Properties Report
  • ADT - ADT Log
  • AFE - Authorization for Expenditure, a process of submitting a business proposal to investors
  • AHBDF - Along Hole Below Derrick Floor
  • AIRG - Airgun
  • AIRRE - Airgun Report
  • AIT - Array Induction Tool
  • AL - Appraisal Licence (United Kingdom), a type of onshore licence issued before 1996
  • ALC - Vertical Seismic Profile Acoustic Log Calibration Report
  • ALR - Acoustic Log Report
  • AMS - Aux.iliary Measurement Service Log
  • ANACO - Analysis of Core Logs Report
  • ANARE - Analysis Report
  • AOF - Absolute Open Flow
  • AOFP - Absolute Open Flow Potential
  • APD - Application for Permit to Drill
  • API - American Petroleum Institute: both the organisation and measure of oil weight (API gravity) in ºAPI
  • APPRE - Appraisal Report
  • APS - Active Pipe Support
  • ARACL - Array Acoustic Log
  • ARESV - Analysis of Reservoir
  • ARI - Azimuthal Resistivity Image
  • ARRC - Array Acoustic Report
  • AS - Array Sonic Processing Log
  • ASI - ASI Log
  • ASME - American Society of Mechanical Engineers
  • ASP - Array Sonic Processing Report
  • ASV - Annular Safety Valve
  • AV - Annular Velocity or Apparent Viscosity
  • AVO - Amplitude Versus Offset (geophysics)
  • AWB - Annulus Wing Block
  • AWO - Approval for Well Operation

B

  • B or b - prefix denoting a number in billions
  • bbl - barrel
  • bcf - billion cubic feet (of natural gas)
  • BDF - Below Derrick Floor
  • BDL - Bit Data Log
  • 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 Group Water Protection
  • 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
  • BHTV - Borehole Television Report
  • BINXQ - Bond Index Quicklook Log
  • BIOR - Biostratigraphic Range Log
  • BIORE - Biostratigraphy Study Report
  • BIVDL - BI/DK/WF/Casing Collar Locator/Gamma Ray Log
  • BO - Back Off Log
  • boe - barrel(s) of oil equivalent
  • boed - barrel(s) of oil equivalent per day
  • boepd - barrel(s) of oil equivalent per day
  • BOM - Bill of Materials
  • BOP - Blowout preventer
  • bopd - barrel(s) of oil per day
  • BOREH - Borehole Seismic Analysis
  • BOTHL - Bottom Hole Locator Log
  • BOTTO - Bottom Hole Pressure/Temperature Report
  • bpd - barrels per day
  • BPFL - Borehole Profile Log
  • BPLUG - Baker Plug
  • 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&W - Basic Sediments and Water
  • BTHL - Bottom Hole Log
  • BTU - British Thermal Units
  • BUR - Build-Up Rate
  • bwd - barrels of water per day (often used in reference to oil production)
  • bwpd - barrels of water per day

C

  • 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
  • CALIL - Caliper Log
  • CALOG - Circumferential Acoustic Log
  • CALVE - Calibrated Velocity Log Data
  • CAPP - Canadian Association of Petroleum Producers
  • CAS - Casing Log
  • 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
  • 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 casaing features)
  • 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
  • CDP - Common Depth Point (geophysics)
  • CDP - Comprehensive Drilling Plan
  • CDRCL - Compensated Dual Resistivity Cal. Log
  • CE - CE Log
  • CERE - Cement Remedial Log
  • CECAN - CEC Analysis
  • CEME - Cement Evaluation
  • CET - Cement Evaluation Tool
  • CFD - Computational Fluid Dynamics
  • 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)
  • CIMV - Chemical Injection Metering Valve
  • CHCNC - CHCNC Gamma Ray Casing Collar Locator
  • CHDTP - Caliper HDT Playback Log
  • CHECK - Checkshot and Acoustic Calibration Report
  • CHKSR - Checkshot Survey Report
  • CHKSS - Checkshot Survey Log
  • CHP - Casing Hanger Pressure (pressure in an annulus as measured at the casing hanger)
  • CHROM - Chromatolog
  • CILD - Conduction Log
  • 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
  • CMP - Common Midpoint (geophysics)
  • CMR - CMR Log
  • 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
  • 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
  • COXY - Carbon/Oxygen Log
  • CPI - CPI Log
  • CPICB - CPI Coriband Log
  • CPIRE - CPI Report
  • CRET - Cement Retainer Setting Log
  • CsF - Caesium Formate (coincidentally also an acronym of the sole large-scale supplier of caesium formate brine, Cabot Specialty Fluids.)
  • csg - casing
  • CSHN - Cased Hole Neutron Log
  • CSI - CSI Log
  • CSMT - Core Sampler Tester Log
  • CSPG - Canadian Society of Petroleum Geologists
  • CST - CST Log
  • CSTAK - Core Sample Taken Log
  • CSTRE - CST Report
  • CSUG - Canadian Society for Unconventional Gas
  • CT - Coiled Tubing
  • CTD - Coiled Tubing Drilling
  • CTCO - Coiled Tubing Clean Out
  • CTRAC - Cement Tracer Log
  • CUT - Cutter Log
  • CUTTD - Cuttings Description Report
  • CWOR- Completion Work Over Riser
  • CYBD - Cyberbond Log
  • CYBLK - Cyberlook Log
  • CYDIP - Cyberdip Log
  • CYDN - Cyberdon Log
  • CYPRO - Cyberproducts Log

D

  • D&C - Drilling and Completions
  • DAC - Dipole Acoustic Log
  • DARCI - Darci Log
  • DAZD - Dip and Azimuth Display
  • DC - Drill Collar(s)
  • DCALI - Dual Caliper Log
  • DD - Directional Driller or Directional Drilling
  • 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
  • DECC - Department for Energy and Climate Change (United Kingdom)
  • DECT - Decay Time
  • DEFSU - Definitive Survey Report
  • DELTA - Delta-T Log
  • DEN - Density Log
  • DEPAN - Deposit Analysis Report
  • DEPC - Depth Control Log
  • DESFL - Deep Induction SFL Log
  • DEV - Development Well, Lahee classification
  • DEVLG - Deviation Log
  • DEXP - D-Exponent Log
  • DF - Derrick Floor
  • DFR - Drilling Factual Report
  • DH - Drilling History
  • DHC - Depositional History Curve
  • DHSV - Downhole Safety Valve
  • DHPTT - Downhole Pressure/Temperature Transducer
  • DIBHC - DIS BHC Log
  • DIEGR - Dielectric Gamma Ray Log
  • 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 Licence (United Kingdom), a type of onshore licence issued before 1996
  • DLIST - Dip List Log
  • DLL - Dual Laterolog
  • DLS - Dog-Leg Severity (directional drilling)
  • DNHO - Downhole Logging
  • DOE - Department of EnergyUnited States
  • DOWRE - Downhole Report
  • DP - Drill Pipe
  • 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
  • DRLCT - Drilling Chart
  • DRLOG - Drilling Log
  • DRLPR - Drilling Proposal/Prog. Report
  • DRPG - Drilling Program Report
  • DRPRS - Drilling Pressure
  • DRREP - Drilling Report
  • DRYRE - Drying Report
  • DS - Deviation Survey
  • DSCAN - DSC Analysis Report
  • DSI - Dipole Shear Imager
  • 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
  • DSV - Diving Support Vessel or Drilling Supervisor
  • DTI - Department of Trade and Industry (United Kingdom) (obsolete; superseded by dBERR, which was then superseded by DECC)
  • DTPB - CNT True Vertical Depth Playback Log
  • DTT - Depth To Time
  • 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

  • E&A - Exploration and Appraisal
  • E&P - Exploration and Production
  • ECD - Equivalent Circulating Density
  • ECP - External Casing Packer
  • ECRD - Electrically Controlled Release Tool
  • EDP - Exploration Drilling Program Report
  • EDP - Emergency Disconnect Package
  • EFR - Engineering Factual Report
  • EGMBE - Ethylene Glycol Mono-Butyl Ether
  • ELT - Economic Limit Test
  • EL - Electric Log
  • EM - EMOP Log
  • EMOP - EMOP Well Site Processing Log
  • EMP - Electromagnetic Propagation Log
  • EN PI - Enhanced Productivity Index Log
  • ENG - Engineering Log
  • ENGF - Engineer Factual Report
  • ENGPD - Engineering Porosity Data
  • ENJ - Enerjet Log
  • EOFL - End of Field Life
  • EOR - Enhanced Oil Recovery
  • EOW - End Of Well Report
  • 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
  • EPT - EPT Log
  • EPTNG - EPT-NGT Log
  • ER(D) - Extended Reach (Drilling)
  • ESD - Emergency Shut-Down
  • ESP - Electric Submersible Pump
  • ETAP - Eastern Trough Area Project
  • ETTD - Electromagnetic Thickness Test
  • EVARE - Evaluation Report
  • 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

F

  • FAC - Factual Report
  • FACHV - Four Arm Caliper Log
  • FANAL - Formation Analysis Sheet Log
  • FC - Float Collar
  • FCP - Final circulating pressure
  • FCVE - F Curve Log
  • FDC - Formation Density Log
  • FDP - Field Development Plan
  • FDS - Functional Design Specification
  • FEED - Front End Engineering and Design
  • FEWD - Formation Evaluation While Drilling
  • FFAC - Formation Factor Log
  • FFM - Full Field Model
  • FGEOL - Final Geological Report
  • FH - Full Hole tool joint
  • FID - Final Investment Decision
  • FIL - FIL Log
  • FINST - Final Stratigraphic Report
  • FINTP - Formation Interpretation
  • FIT - Formation Integrity Test
  • FIV - Formation Isolation Valve
  • FL - F Log
  • FLIV - FlowLine Injection Valve
  • FLIV - Flowline Isolation Valve
  • FLOG - FLOG PHIX RHGX Log
  • FLOPR - Flow Profile Report
  • FLOT - Flying Lead Orientation Tool
  • FLOW - Flow & Buildup Test Report
  • FLS - Fluid Sample
  • flt - Fault (geology)
  • FMECA - Failure Modes, Effects, and Criticality Analysis
  • FMI - Formation Microimager Log
  • FMP - Formation Microscan Report
  • FMS - Formation Multiscan Log
  • FMTAN - FMT Analysis Report
  • FOSV - Full Opening Safety Valve
  • FPIT - Free Point Indicator Tool
  • FPL - Flow Analysis Log
  • FPLAN - Field Plan Log
  • FPSO - Floating Production Storage and Offloading vessel
  • FPU - Floating Processing Unit
  • FRA - Fracture Log
  • FRARE - Fracture Report
  • FRES - Final Reserve Report
  • FS - Fail Safe (as in FS valve)
  • FSO - Floating Storage Offloading vessel
  • FT - Formation Tester Log
  • FTRE - Formation Testing Report
  • FULDI - Full Diameter Study Report
  • FV - Funnel Viscosity or Float Valve
  • FWL - Free water level
  • FWR - Final Well Report
  • FWV - Flow Wing Valve (also known as Production Wing Valve on a Xmas tree)

G

  • G/C - Gas Condensate
  • GAS - Gas Log
  • GASAN - Gas Analysis Report
  • GBS - Gravity Based Structure
  • GBT - Gravity Base Tank
  • GCLOG - Graphic Core Log
  • GCT - GCT Log
  • GDIP - Geodip Log
  • GE - Condensate gas equivalent
  • 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 Prog. Report
  • GEORE - Geological Report
  • GGRG - Gauge Ring
  • GIIP - Gas Initially In Place
  • GIS - Geographic Information System(s)
  • GL - Gas Lift
  • GLM - Gas Lift Mandrel (alternative name for Side Pocket Mandrel)
  • GLR - Gas Liquid Ratio
  • GLT - GLT Log
  • GLV - Gas Lift Valve
  • GOC - Gas Oil Contact
  • GOM - Gulf of Mexico
  • GOP - Geological Operations Report
  • GOR - Gas Oil Ratio
  • GOSP - Gas/Oil Separation Plant
  • GPIT - Inclinometry Tool Log
  • GPLT - Geol Plot Log
  • GPSL - Geo Pressure Log
  • GRAD - Gradiometer Log
  • GRLOG - Grapholog
  • GRN - Gamma Ray Neutron Log
  • GRV - Gross Rock Volume
  • GRSVY - Gradient Survey Log
  • GST - GST Log
  • GTL - Gas to liquids
  • GTW - Gas To Wire
  • GUN - Gun Set Log
  • GWREP - Geo Well Report

H

  • HAZID - Hazard Identification (meeting)
  • HC - Hydrocarbons
  • HCCS - Horizontal Clamp Connection System
  • HDT - High Resolution Dipmeter Log
  • HEXT - Hex Diplog
  • HGS - High (specific-)Gravity Solids
  • HL - Hook Load
  • HP - Hydrostatic Pressure
  • HPGAG - High Pressure Gauge
  • HPHT - High Pressure High Temperature (same as HTHP)
  • HPPS - HP Pressure Log
  • HSE - Health, Safety and Environment or Health & Safety Executive (United Kingdom)
  • HTHP - High Temperature High Pressure (same as HPHT)
  • HVDC - High Voltage Direct Current
  • HWDP - Heavy-Weight Drill Pipe (sometimes spelled Hevi-Wate)
  • HUD - Hold Up Depth
  • HWDP - Heavy Weight Drill Pipe
  • HYPJ - Hyperjet
  • HYROP - Hydrophone Log

I

  • I:P - Injector To Producer Ratio
  • IADC - International Association of Drilling Contractors
  • IBC - Intermediate Bulk Container
  • ICoTA - Intervention and Coiled Tubing Association
  • ICV - Interval Control Valve
  • 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
  • IH - Gamma Ray Log
  • IJL - Injection Log
  • IL - Induction Log
  • ILOGS - Image Logs
  • IMAG - Image Analysis Report
  • 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
  • IPAA - Independent Petroleum Association of America
  • IPC - Installed Production Capacity
  • IPLS - IPLS Log
  • IPR - Inflow Performance Relationship
  • IR - Interpretation Report
  • 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
  • ITS - Influx To Surface
  • IWCF - International Well Control Federation
  • IWOCS- Installation / Workover Control System

[edit]J

[edit]K

  • KOP - Kick-Off Point (directional drilling)
  • KOP - Kick Off Plug
  • KRP - Kill rate pressure
  • KB - Kelly Bushing

L

  • LACT - Lease Automatic Custody Transfer
  • LAT - Lowest Astronomical Tide
  • LCM - Lost Circulation Material
  • LCNLG - LDT CNL Gamma Ray Log
  • LDL - Litho Density Log
  • LDTEP - LDT EPT Gamma Ray Log
  • LEAKL - Leak Detection Log
  • LEPRE - Litho-Elastic Property Report
  • LGR - Liquid Gas Ratio
  • LGS - Low (specific-)Gravity Solids
  • LINCO - Liner and Completion Prog. Report
  • LIOG - Lithography Log
  • 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 - Liquified Natural Gas
  • 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
  • LP - Low Pressure
  • LSBGR - Long Spacing BHC GR Log
  • LSSON - Long Spacing Sonic Log
  • LT - Linear Time
  • LUMI - Luminescence Log
  • LVEL - Linear Velocity Log
  • LWD - Logging While Drilling

M

  • M or m - prefix designating a number in thousands (not to be confused with SI prefix M for mega- or m for milli)
  • MAASP - Maximum Acceptable [or Allowable] Annular Shut-in Pressure
  • MAC - Multipole Acoustic Log
  • MACL - Multiarm Caliper Log
  • MAGST - Magnetostratigraphic Report
  • MARA - Maralog
  • MAWP - Maximum Allowable Working Pressure
  • mbd - thousand barrels per day
  • mbod - thousand barrels of oil per day
  • MCM - Manifold Choke Module
  • 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
  • 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
  • MEG - Mono Ethylene Glycol
  • MEPRL - Mechanical Properties Log
  • MERCR - Mercury Injection Study Report
  • MERG - Merge FDC/CNL/Gamma Ray/Dual Laterolog/Micro SFL Log
  • MEST - MEST Log
  • MF - Marsh Funnel (mud viscosity)
  • MFCT - Multifinger Caliper Tool
  • MGL - Magnelog
  • MIFR - Mini Frac Log
  • MINL - Minilog
  • MIPAL - Micropalaeo Log
  • MIYP - maximum internal yield pressure
  • mKB - Meters below Kelly Bushing
  • ML - Microlog
  • MLL - Microlaterolog
  • MM or mm - prefix designating a number in millions (not to be confused with SI unit mm for millimetre)
  • mmbd - million barrels per day
  • mmbod - million barrels of oil per day
  • MMS - Minerals Management Service, (United States)
  • mmscfd - million standard cubic feet per day
  • mmstb - million stock barrels
  • MNP - Merge and Playback Log
  • MODU - Mobile Offshore Drilling Unit
  • MOPU - Mobile Offshore Production Unit
  • MPA - Micropalaeo Analysis Report
  • MPD - Managed Pressure Drilling
  • MPFM - Multi-Phase Flow Meter
  • MPK - Merged Playback Log
  • MPS - Manufacturing Procedure Specification
  • MQC - Multi Quick Connection Plate
  • MR - Marine Riser
  • MRCV - Multi Reverse Circulating Valve
  • MRIRE - Magnetic Resonance Image Report
  • MSCT - MSCT Gamma Ray Log
  • MSFL - Micro SFL Log
  • MSL - Mean sea level
  • MSL - Micro Spherical Log
  • MSS - Magnetic Single Shot
  • MST - MST EXP Resistivity Log
  • MTT - MTT Multi-Isotope Trace Tool
  • MUD - Mud Log
  • MUDT - Mud Temperatire Log
  • MuSol - Mutual Solvent
  • MVB - Master Valve Block
  • MWD - Measurement While Drilling
  • MWDRE - Measurement While Drilling Report

N

  • NACE - National Association of Corrosion Engineers
  • 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
  • NEUT - Neutron Lhttp://en.wikipedia.org/w/index.php?title=List_of_oil_field_acronyms&action=edit§ion=15og
  • NFI - No Further Investment
  • NFW - New Field Wildcat, Lahee classification
  • 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 - NGT Log
  • 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
  • NNS - Northern North Sea
  • NOISL - Noise Log
  • NOC - National Oil Company
  • NPD - Norwegian Petroleum DirectorateNorway
  • NPS - Nominal Pipe Size (sometimes NS)
  • NPSH - Net Positive Suction Head
  • NPV - Net Present Value
  • NRV - Non Return Valve (Chicksan valve that only allows flow in one direction)
  • NPW - New Pool Wildcat, Lahee classification
  • NS - North Sea
  • NTHF - Non-Toxic High Flash
  • NTU - Nephelometric Turbidity Unit
  • NUMAR - Magnetic Resonance Image Log

O

  • O&G - Oil and Gas (referring to the industry or the companies in it)
  • OBDTL - OBDT Log
  • OBEVA - OBDT Evaluation Report
  • OBM - Oil-Based Mud
  • OCL - Quality Control Log
  • OCTG - Oil Country Tubular Goods
  • OD - Outer Diameter (of a tubular component such as casing)
  • ODT - Oil Down To
  • OFST - Offset Vertical Seismic Profile
  • OH - Openhole Log
  • OIM - Offshore Installation Manager
  • OMRL - OMRL Log
  • OOE - Offshore Operation Engineer (senior technical authority on an offshore oil platform)
  • OPEC - Organization of Petroleum Exporting Countries
  • OPL - Operations Log
  • OPRES - Overpressure Log
  • OPS - Operations Report
  • ORICO - Oriented Core Data Report
  • OTL - Operations Team Leader
  • OWC - Oil Water Contact
  • OT - Off Tree
  • OUT - Outpost, Lahee classification
  • OVCH - Oversize Charts
  • OBCS- Ocean Bottom Cable System

P

  • P&A - plugged and abandoned (of a well)
  • PEA - Palaeo Environment Study Report
  • PAL - Palaeo Chart
  • PALYN - Palynological Analysis Report
  • PAR - Pre-Assembled Rack
  • PAU - Pre-Assembled Unit
  • PBDMS - Playback DMSLS Log
  • PBR - Polished Bore Receptacle (component of a completion string)
  • PBTD - Plug Back Total Depth
  • PBU - Pressure Build Up (applies to integrity testing on valves)
  • PCCL - Perforation Casing Collar Locator Log
  • PCDM - Power and Control Distribution Module
  • PCKR - Packer Log
  • PCOLL - Perforation and Collar
  • PDC - Perforation Depth Control
  • PDC - Polycrystalline Diamond Composite (a type of drilling bit)
  • PDG - Permanent Downhole Gauge
  • PDKL - PDK Log
  • PDKR - PDK 100 Report
  • PDP - Proved Developed Reserves
  • PE - Petroleum Engineer
  • PEDL - Petroleum Exploration and Development Licence (United Kingdom), introduced in the 8th Onshore Licensing Round
  • PENL - Penetration Log
  • PEP - PEP Log
  • PERDC - Perforation Depth Control
  • PERFO - Perforation Log
  • PERM - Permeability
  • PERML - Permeability Log
  • PESBG - 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
  • PLET - Pipeline End Termination
  • 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
  • PHOL - Photon Log
  • PHYFM - Physical Formation Log
  • PI - Productivity Index
  • PINTL - Production Interpretation
  • PL - Production Licence (United Kingdom), a type of onshore licence issued before 1996
  • PLG - Plug Log
  • PLS - Position Location System
  • PLT - Production Logging Tool
  • PLTQ - Production Logging Tool Quicklook Log
  • PLTRE - Production Logging Tool Report
  • POBM - Pseudo-Oil-Based Mud
  • POOH - Pull Out Of Hole
  • PON - Petroleum Operations Notice (United Kingdom)
  • POR - Density Porosity Log
  • POSFR - Post Fracture Report
  • POSTW - Post Well Appraisal Report
  • POSWE - Post Well Summary Report
  • PP - DXC Pressure Plot Log
  • ppcf - Pounds Per Cubic Foot
  • 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 peculiar to Shell
  • PPS - Production Packer Setting
  • PRA - Production Reporting & Allocation
  • PREC - Perforation Record
  • PRESS - Pressure Report
  • PROD - Production Log
  • PROTE - Production Test Report
  • PROX - Proximity Log
  • PRSRE - Pressure Gauge Report
  • PSANA - Pressure Analysis
  • PSA - Production Sharing Agreement
  • PSC - Production Sharing Contract
  • PSIA - Pounds Per Square Inch Atmospheric
  • PSIG - Pounds Per Square Inch Gauge
  • PSL - Product Specification Level
  • PSLOG - Pressure Log
  • PSP - pseudostatic spontaneous potential
  • PSPL - PSP Leak Detection Log
  • PSQ - Plug Squeeze Log
  • PST - PST Log
  • PSVAL - Pressure Evaluation Log
  • PTS - Pipeline Termination Structure
  • PTSET - Production Test Setter
  • PTTC - Petroleum Technology Transfer Council, United States
  • PUD - Proved Undeveloped Reserves
  • PUN - Puncher Log
  • PUR - Plant Upset Report
  • PUWER - Provision and Use of Work Equipment Regulations
  • PV - Plastic Viscosity
  • PVT - Pressure Volume Temperature
  • PVTRE - Pressure Volume Temperature Report
  • PW - Produced Water
  • PWB - Production Wing Block
  • PWRI - Produced Water Re-Injection
  • PWV - Production Wing Valve (also known as a flow wing valve on a Xmas tree)
  • PSD - Planned Shut-Down
  • PMV - Production Master Valve

Q

  • QC - Quality control
  • QCR - Quality Control Report
  • QL - Quicklook Log

R

  • RAC - Ratio Curves
  • RAWS - Raw Stacks VSP Log
  • RBP - Retrievable Bridge Plug
  • RCKST - Rig Checkshot
  • RCD - Rotating Control Device
  • RCL - Retainer Correlation Log
  • RCR - Remote Component Replacement(Tool)
  • RE - Reservoir Engineer
  • REOR - Reorientation Log
  • RE-PE - Re-Perforation Report
  • RESAN - Reservoir Analysis
  • RESEV - Reservoir Evaluation
  • RESFL - Reservoir Fluid
  • RESI - Resistivity Log
  • RESL - Reservoir Log
  • RESOI - Residual Oil
  • REZ - Renewable Energy Zone (United Kingdom)
  • RF - Recovery Factor
  • RFMTS - Repeat Formation Tester
  • RFSU - Ready For Start-Up
  • RFT - Repeat Formation Tester
  • RFTRE - Repeat Formation Tester Report
  • RFTS - Repeat Formation Tester Sample
  • RIGMO - Rig Move
  • RIH - Run In Hole
  • RITT - Riser Insertion Tube (Tool) [1]
  • RKB - Rotary Kelly Bushing (a datum for measuring depth in an oil well)
  • RLOF - Rock Loadout Facility
  • RMLC - Request for Mineral Land Clearance
  • RMS - Ratcheting Mule Shoe
  • RNT - RNT Log
  • ROCT - Rotary Coring Tool
  • ROP - Rate of Penetration
  • ROV - Remotely Operated Vehicle, used for subsea construction and maintenance
  • ROWS - Remote Operator Workstation
  • RPCM - Ring Pair Corrosion Monitoring
  • RROCK - Routine Rock Properties Report
  • RSS - Rig Site Survey
  • RST - RST Log
  • RTTS - Retrievable Test-Treat-Squeeze (packer)
  • RWD - RWD Log

S

  • SAGD - Steam Assisted Gravity Drainage
  • SALM - Single Anchor Loading Mooring
  • SAML - Sample Log
  • SAMTK - Sample Taker Log
  • SANDA - Sandstone Analysis Log
  • SAT - SAT Log
  • SB - SIT-BO Log
  • SBF - Synthetic Base Fluid
  • SBM - Synthetic Base Mud
  • SBT - Segmented Bond Tool
  • SC - Seismic Calibration
  • SCAL - Special core analysis
  • SCAP - Scallops Log
  • SCDES - Sidewall Core Description
  • scf - standard cubic feet (of natural gas)
  • SCHLL - Schlumberger Log also SCHLO, SCHLU
  • SCM - Subsea Control Module
  • SCO - Synthetic Crude Oil
  • SCRS - Sidewall Cores
  • SCSSSV - Surface Controlled Sub Surface Safety Valve
  • SD - Sonic Density
  • SDFN - Shut Down For Night
  • SDIC - Sonic Dual Induction
  • SDL - Supplier Document List
  • SDPBH - SDP Bottom Hole Pressure Report
  • SDT - Step Draw-down Test (sometimes SDDT)
  • SDU - Subsea Distribution Unit
  • 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
  • SG - Static Gradient
  • SGUN - Squeeze Gun
  • SHA - Sensor Harness Assembly
  • SHDT - SHDT Log
  • SHO - Stab and Hinge Over
  • SHOCK - Shcok Log
  • SHOWL - Show Log
  • SI/TA - Shut In/Temporarily Abandoned
  • SICP - Shut-In Casing Pressure
  • SIDPP - Shut-In Drill Pipe Pressure
  • SIDSM - Sidewall Sample
  • SIP - Shut In Pressure
  • SIPES - Soceity of Independent Professional Earth Scientists, United States
  • SIT - System Integration Test
  • SITHP - Shut In Tubing Hanger Pressure (another term for CITHP)
  • SITT - Single TT Log
  • SKPLT - Stick Plot Log
  • SL - Seismic Lines
  • SLS - SLS GR Log
  • SLT - SLT GR Log
  • SMLS - Seamless Pipe
  • SNP - Sidewall Neutron Porosity
  • SNS - Southern North Sea
  • SONCB - Sonic Calibration Log
  • SONRE - Sonic Calibration Report
  • SONWR - Sonic Waveform Report
  • SONWV - Sonic Waveform Log
  • SP - Shot point (geophysics)
  • SP - Spontaneous Potential (Well Log)
  • SPCAN - Special core analysis
  • SPE - Society of Petroleum Engineers
  • SPEAN - Spectral Analysis
  • SPEL - Spectralog
  • SPFM - Single Phase Flow Meter
  • SPH - SPH Log
  • SPM - Side Pocket Mandrel or Strokes Per Minute (of a positive-displacement pump)
  • SPOP - Spontaneous Potential Log
  • SPP - Stand Pipe Pressure
  • SPROF - Seismic Profile
  • SPT - Shallower Pool Test, Lahee classification
  • SQL - Siesmic Quicklook Log
  • SREC - Seismic Record Log
  • SRT - Site Receival Test
  • SS - Subsea, as in a datum of depth, e.g. TVDSS (true vertical depth subsea)
  • SSG - Sidewall Sample Gun
  • 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
  • SSV - Surface Safety Valve
  • stab - Stabiliser
  • STAGR - Static Gradient Survey Report
  • stb - stock tank barrel
  • STC - STC Log
  • STGL - Stratigraphic Log
  • STIMU - Stimulation Report
  • STKPT - Stuck Point
  • STL - STL Gamma Ray Log
  • STRAT - Stratigraphy, stratigraphic
  • STRRE - Stratigraphy Report
  • STOIIP - Stock Tank Oil Initially In Place
  • STOP - Safety Training Observation Program
  • STSH - String Shot
  • SUML - Summarised Log
  • SUMRE - Summary Report
  • SUMST - Geological Summary Sheet
  • SURFR - Surface Sampling Report
  • SURRE - Survey Report
  • SURVL - Survey Chart Log
  • SUT(A/B) - Subsea Umbilical Termination (Assembly/Box)
  • SWE - Senior Well Engineer
  • SV - Sleeve Valve
  • SYNRE - Synthetic Seismic Report
  • SYSEI - Synthetic Seismogram Log

T

  • TAGOGR - Thermally Assisted Gas/Oil Gravity Drainage
  • TAPLI - Tape Listing
  • TAPVE - Tape Verification
  • TAR - True Amplitude Recovery
  • TB - Tubing Puncher Log
  • TBT - Through Bore Tree
  • TCI - Tunsgten Carbide Insert (a type of rollercone drillbit)
  • TCPD - Tubing-Conveyed Perforating Depth
  • 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)
  • TDS - Top Drive System
  • TDT - TDT Log
  • TDTCP - TDT CPI Log
  • TDT GR - TDT Gamma Ray Casing Collar Locator Log
  • TELER - Teledrift Report
  • TEMP- Temperature Log
  • TFL - Through Flow Line
  • TGB - Temporary Guide Base
  • TGOR - Total Gas Oil Ratio (GOR uncorrected for gas lift gas present in the production fluid)
  • THERM - Thermometer Log
  • THP - Tubing Hanger Pressure (pressure in the production tubing as measured at the tubing hanger)
  • TIE - Tie In Log
  • TIEBK - Tieback Report
  • TLOG - Technical Log
  • TMCM - Tranverse Mercator Central Meridian
  • TNDT - Thermal Neutron Decay Time
  • TNDTG - Thermal Neutron Decay Time/Gamma Ray Log
  • TOC - Top Of Cement
  • TOC - Total Organic Content
  • TOOH - Trip Out Of Hole
  • TOL - Top Of Liner
  • TORAN - Torque and Drag Analysis
  • TPERF - Tool Performance
  • TSI - Temporarily Shut In
  • TR - Temporary Refuge
  • TRA - Tracer Log
  • TRACL - Tractor Log
  • TRD - Total Report Data
  • TREAT - Treatment Report
  • TREP - Test Report
  • TRIP - Trip Condition Log
  • TRSV - Tubing Retrievable Safety Valve
  • TRSCSSV - Tubing Retrievable Surface Controlled Sub-Surface Valve
  • TRSCSSSV - Tubing Retrievable Surface Controlled Sub-Surface Safety Valve
  • TT - Transit Time Log
  • TTRD - Through Tubing Rotary Drilling
  • TV/BIP - Ratio of Total Volume (ore and overburden) to Bitumen In Place
  • TVBDF - True Vertical Depth Below Derrick Floor
  • 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

V

  • VDENL - Variation Density Log
  • VDL - VDL Log
  • VDU - Vacuum Distillation Unit, used in processing bitumen
  • VELL - Velocity Log
  • VERAN - Verticality Analysis
  • VERIF - Verification List
  • VERLI - Verification Listing
  • VERTK - Vertical Thickness
  • VIR - Value Investment Ratio
  • VISME - Viscosity Measurement
  • VIV - Vortex induced Vibration
  • VLP - Vertical Lift Performance
  • VO - Variation Order
  • VOR - Variation Order Request
  • VRR - Voidage Replacement Ratio
  • 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

W

  • WABAN - Well Abandonment Report
  • WAG - Water Alternating Gas (describes an injection well which alternates between water and gas injection)
  • WALKS - Walkaway Seismic Profile
  • WATAN - Water Analysis
  • WAVF - Waveform Log
  • WBM - Water-Based Mud
  • WC - Watercut
  • 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
  • WFAC - Waveform Acoustic Log
  • WGEO - Well Geophone Report
  • WGFM - Wet Gas Flow Meter
  • WGUNT - Water Gun Test
  • WH - Well History
  • WHIG - Whitehouse Gauge
  • WHP - Wellhead Pressure
  • WI - Water Injection
  • WI - Working Interest
  • WIPSP - WIP Stock Packer
  • WLC - Wireline Composite Log
  • WLL - Wireline Logging
  • WLSUM - Well Summary
  • WHM - Wellhead Maintenance
  • WHP - Wellhead Pressure
  • WOB - Weight On Bit
  • WOC - Wait on Cement
  • WOE - Well Operations Engineer (a key person of Well services)
  • WOM - Wait on Material
  • WORKO - Workover
  • WOS - West of Shetland, oil province on the UKCS
  • WOW - Wait On Weather
  • WP - Well Proposal or Working Pressure
  • WPLAN - Well Course Plan
  • WPQ - Weld Procedure Qualification
  • WPR - Well Prognosis Report
  • 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
  • WSP - Well Seismic Profile
  • WSR - Well Shoot Report
  • WSS - Well Services Supervisor (leader of Well services at the wellsite)
  • WSSAM - Well Site Sample
  • WSSOF - WSS Offset Profile
  • WSSUR - Well Seismic Survey Plot
  • WSSVP - WSS VSP Raw Shots
  • WSSVS - WSS VSP Stacks
  • WSTL - Well Site Test Log
  • WT - Well Test
  • WTI - West Texas Intermediate benchmark crude
  • WUT - Water Up To
  • WVS - Well Velocity Survey

X

  • XL - or EXL, Exploration Licence (United Kingdom), a type of onshore licence issued between the First Onshore Licensing Round (1986) and the Sixth (1992)
  • XMT - or XT, XMas Tree (Christmas Tree, the valve assembly on a production well-head)
  • XO - Cross-Over

Y

  • yl - Holdup Factor
  • YP - Yield Point

Z

  • Z - Depth, in the geosciences referring to the depth dimension in any x,y,z data.

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