Right here in America there is a modern day oil & gas boom. Using a geology-based assessment methodology, the U.S. Geological Survey estimated mean undiscovered volumes of 3.65 billion barrels of oil, 1.85 trillion cubic feet of associated/dissolved natural gas, and 148 million barrels of natural gas liquids in the Bakken Shale Formation of the Williston Basin Province, Montana and North Dakota.

Oil And Gas Boom Plays In The USA And Canada

Antrim Shale ANWAR Oil Shale - Austin Chalk - Avalon Shale - Bakken Oil Shale - Barnett Shale- Bone Spring - Bossier Shale - Brazil Oil Field - Cardium Shale - Chainman Shale - Chattanooga Shale -Collingwood Shale - Cumnock Shale - Duvernay Shale - Eagle Ford Shale - Exshaw Shale - Fayetteville Shale - Granite Wash - Green River Basin Oil Shale - Haynesville Shale - Horn River Shale - Huron Shale - Kern County Oil Field - Leonard Shale - Marcellus Shale - Monterey Shale - Montney Shale -Niobrara Shale - Permian Basin - Piceance Basin - Smackover Brown Dense Formation - Spraberry Field - Tuscaloosa Marine Shale - Utica Shale - Wolfberry Trend - Wolfcamp Shale - Woodford Shale -Oil Sands - China Shale - Mineral Rights - Index of Shale

OilField 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  • AAODC – American Association of Oilwell Drilling Contractors (obsolete; superseded by IADC)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 Energy, United 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&section=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 Directorate, Norway
  • 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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