List of acronyms in oil and gas exploration and production ( from M to Z )

2019.06.17

6 986

M

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
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
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).^[10]
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
MOPU – Mobile Offshore Production Unit
MOT – Materials/Marine Offloading Terminal
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 - 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)
MSCT – Mechanical Sidewall Coring Tool
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)
MSIPC – Multi Stage inflatable Packer Collar
MSL – Mean Sea Level
MSL – Micro Spherical Log
MSS – Magnetic Single Shot
MST – MST EXP Resistivity Log
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

N

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
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,
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 – Net Positive Suction Head
NPV – Net Present Value
NRI - Net Revenue Interest
NRV – Non Return Valve
NPW – New Pool Wildcat,
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
OH – Openhole
OH – Openhole Log
OHC – Open Hole Completion
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
OTDR – Optical Time Domain Reflectometry
OTIP – Operational Testing Implementation Plan
OTL – Operations Team Leader
OTSG - One-time Through Steam Generator
OWC – Oil Water Contact
OT – Off Tree
OUT – Outpost,
OUT – Oil Up To
OVCH – Oversize Charts
OVID – Offshore Vessel Inspection Database
OWC – Oil-Water Contact

P

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
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
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 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
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)
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 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

R/B- RACK BACK
R&M - Repair and Maintenance
RAC – Ratio Curves
RACI – Responsible / Accountable / Consulted / Informed
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.)
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
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

S

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^[12]
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
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,
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
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
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

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
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
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
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
TUTB – Topside Umbilical Termination Box/Unit (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
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)
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

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
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