PPI Oilfield Acronym Glossary
PPI Technology Services is pleased to provide its Oilfield Acronym Glossary. We regularly update this resource with various oil-related terms (not all of which are acronyms). These terms include acronyms and phrases used across the worldwide oil and gas industry, including regulatory; association; seismic; laboratory; health, safety, and environmental; exploration; production; upstream; midstream; and downstream terms.
We hope you find these helpful. Check back regularly, because we add oilfield acronyms and terms on a weekly or monthly basis.
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y
1D: One-dimensional (usually a checkshot seismic survey)
2D: Two-dimensional
30 CFR Part 250, Subpart E: Oil and Gas and Sulphur Operations in the Outer Continental Shelf—Oil and Gas Well-Completion Operations (US Regulation)
30 CFR Part 250, Subpart F: Oil and Gas and Sulphur Operations in the Outer Continental Shelf—Oil and Gas Well-Workover Operations (US Regulation)
30 CFR Part 250, Subpart O: Oil and Gas and Sulphur Operations in the Outer Continental Shelf—Well Control and Production Safety Training (US Regulation)
30 CFR Part 250, Subpart S: Oil and Gas and Sulphur Operations in the Outer Continental Shelf—Safety and Environmental Management Systems (US Regulation)
30 CFR Part 250: Oil and Gas and Sulphur Operations in the Outer Continental Shelf (US Regulation)
33 CFR 142: Navigation and Navigable Waters, Workplace Safety and Health (US Regulation)
3C: Three-component (seismic survey)
3D: Three-dimensional
4D seismic: Time-lapse seismic survey
A
AADE: American Association of Drilling Engineers
AAPG: American Association of Petroleum Geologists
AAR: After action reviews
AC: Alaminos Canyon Gulf of Mexico leasing area
ACP: Annular casing pressure
AFE: Authorization for expenditure
AIChE: American Institute of Chemical Engineers
AIME: American Institute of Mining, Metallurgical, and Petroleum Engineers
AIP: Australian industry participation
AIT: Auto-ignition temperature
AIV: Alternate isolation valve
AL: Artificial lift
ALARP: As low as reasonably practicable
ANPR: Advance notice of proposed rulemaking
ANSI: American National Standards Institute
AP: Apalachicola Gulf of Mexico leasing area
APD: Application for permit to drill
API: American Petroleum Institute
API RP 14C: Recommended Practice for Analysis, Design, Installation and Testing of Basic Surface Safety Systems for Offshore Production Platforms
API RP 14G: Recommended Practice for Fire Prevention and Control on Open Type Offshore Production Platforms
API RP 14J: Recommended Practice for Design and Hazards Analysis for Offshore Production Facilities
API RP 2D: Recommended Practice for Operation and Maintenance of Offshore Cranes
API RP 49: Recommended Practice for Drilling and Well Servicing Operations Involving Hydrogen Sulfide
API RP 55: Recommended Practices for Oil and Gas Producing and Gas Processing Plant Operations Involving Hydrogen Sulfide
API RP 59: Recommended Practices for Well Control Operations
API RP 65: Cementing Shallow Water Flow Zones in Deep Water Wells
API RP 75: Recommended Practice for Development of a Safety and Environmental Management Program for Offshore Operations and Facilities (3rd ed., May 2004, affirmed 2008)
API RP 76: Contractor Safety Management for Oil & Gas Drilling and Production Operations
API RP T-1: Recommended Practice for Orientation Program for Personnel Going Offshore for the First Time
API RP T-2: Recommended Practice for Qualification Programs for Offshore Production Personnel Who Work With Anti-Pollution Safety Devices
API RP T-4: Recommended Practice for Training of Offshore Personnel in Non-Operating Emergencies
API RP T-6: Recommended Practice for Training and Qualifications of Personnel in Well Control Equipment and Techniques for Completion and Workover Operations on Offshore Locations Recommended Practices for Well Control Operations
API RP T-7: Recommended Practice for Training of Personnel in Rescue of Persons in Water
APM: Application for permit to modify
APM: Application to drill—modification
ASCE: American Society of Chemical Engineers
ASME: American Society of Mechanical Engineers
ASR: Atmosphere-supplying respirator
ASTM F1166-95: Standard Practice for Human Engineering Design for Marine Systems, Equipment and Facilities
ASTM: ASTM International, formerly the American Society for Testing and Materials
AT: Atwater Valley Gulf of Mexico leasing area
AVO: Amplitude variation with offset (seismic)
B
BA: Brazos Area Gulf of Mexico leasing area
BA: Bridging agreement
BARS: Borehole acoustic reflection survey
BAST: Best available and safest technology
bbl: Traditional oilfield abbreviation for barrels of oil (42 galUS)
Bcf: Billion cubic feet
BFOE: Brent, Forties, Oseberg, and Ekofisk (oil fields)
BFPD: Barrels of fluid per day
BHA: Bottomhole assembly
BHCT: Bottomhole circulating temperature
BHL: Bottomhole location
BHP: Bottomhole pressure
BHP: Bottomhole pressure
BHST: Bottomhole static temperature
BLP: Bridge-linked platform
BLPD: Barrels of liquid per day
BM: Bay Marchand Area Gulf of Mexico leasing area
boe/d: barrels of oil equivalent per day
boe: Barrels of oil equivalent
BOEM: US Bureau of Ocean Energy Management (BOEM); created by splitting BOEMRE into two parts, BOEM and BSEE, as of Oct. 1, 2011
BOEMRE: The former US Bureau of Ocean Energy Management, Regulation, and Enforcement (successor to the US Minerals Management Service [MMS]); BOEMRE was replaced Oct. 1, 2011 by the Bureau of Ocean Energy Management (BOEM) and the Bureau of Safety and Environmental Enforcement (BSEE).
BOEPD: Barrels of oil equivalent per day
BOP: Blowout preventer
BOPD: Barrels of oil per day
BOPE: Blowout preventer equipment
BPD: barrels per day
BPV: Back pressure valve
Brent crude: Collection of contracts and futures contracts regarding oil from the Brent, Forties, Oseberg, and Ekofisk fields
Brownfields: Oil or gas fields that are beyond their production plateau but are still producing
BRT: Below rotary table
BS&W: Basic sediment and water
BS: Breton Sound Area Gulf of Mexico leasing area
BSDV: Boarding shutdown valve
BSEE: US Bureau of Safety and Environmental Enforcement,created by splitting BOEMRE into two parts, BOEM and BSEE, as of Oct. 1, 2011.
BSEE-0123: US Form for Application for Permit to Drill
BSEE-0123S: US Form for Supplemental APD Information Sheet
BSEE-0124: US Form for Application for Permit to Modify
BSEE-0125: US Form for End of Operations Report
BSEE-0126: US Form for Well Potential Test Report
BSEE-0128: US Form for Semiannual Well Test Report
BSEE-0131: US Form for Performance Measures Data
BSEE-0132: US Form for Hurricane and Tropical Storm Evacuation and Production Curtailment Statistics, Gulf of Mexico OCS Region (GOMR)
BSEE-0133: US Form for Well Activity Report
BSEE-0133S: US Form for Open Hole Data Report
BSEE-0143: US Form for Facility/Equipment Damage Report
BSEE-0144: US Form for Rig Movement Notification Report
BSEE-0149: US Form for Assignment of Federal OCS Pipeline Right-of-Way Grant
BSEE-1832: US Form for Notification of Incidents of Noncompliance
BSL: Burner safety low (burner flame detector)
BSR: Bend strength ratio
BWOC: By weight of cement
BWOW: By weight of water
BWPD: Barrels of water per day
C
CA: Chandeleur Area Gulf of Mexico leasing area
CATS: Central Area Transmission System
CBL: Cement bond log
CBM: Coalbed methane
CBT: Computer-based training
CC: Corpus Christi Gulf of Mexico leasing area
CCL: Casing collar locator
CCS: Carbon capture and storage (or sequestration)
CFR: Code of Federal Regulations
CH: Cased hole
CH: Charlotte Harbor Gulf of Mexico leasing area
CHOPS: Cold heavy oil production with sand
COFR: Certificate of Financial Responsibility
CRA: Corrosion-resistant alloy
CS: Chandeleur Sound Gulf of Mexico leasing area
CSS: Cyclic steam stimulation (method)
CT: Coiled tubing
CTD: Coiled tubing drilling
D
D: Darcy
D: Day
DART: Days Away, Restricted work, or job Transfer
DBCP: 1,2-dibromo-3-chloropropane
DC: Desoto Canyon Gulf of Mexico leasing area
DD: Dustin Dome Gulf of Mexico leasing area
Delta: Difference between plan and performance
DLS: Dogleg severity
DMR: Discharge monitoring report
DOCD: Development operations coordination documents
DOI: US Department of Interior
DOO: Designation of operator
DOT: US Department of Transportation
dP: Delta pressure
DP: Dynamically positioned
DPP: Development and production plan
DPS: Dynamic positioning system
DST: Drillstem test
DT: Day Tortugas Gulf of Mexico leasing area
DTI: UK Department of Trade and Industry
DW: Deep water
DWOP: Deepwater operations plan
DWOP: Drilling well on paper (exercise)
DWRRA: US Deep Water Royalty Relief Act
E
E&P: Exploration and production
EA: Environmental Assessment
EB: East Breaks Gulf of Mexico leasing area
EC: East Cameron Area Gulf of Mexico leasing area
ECC: Emergency control center
ECD: Equivalent circulating density
EDRC: Effective daily recovery capacity (of oil skimmers)
EEHA: Electrical equipment in hazardous areas
EER: Emergency escape and refuge (system)
EERA: Escape, evacuation, and rescue analysis
EI: Eugene Island Area Gulf of Mexico leasing area
EIA: Environmental impact assessment
EIA: US Energy Information Administration
EIS: Environmental impact statement
EL: The Elbow Gulf of Mexico leasing area
EMT: Electrical metallic tubing (conduit)
EOR: End of operations (report)
EOR: Enhanced oil recovery
EOS: Equation of state
EOW: End of well (report)
EP: Exploration plan
EPA: US Environmental Protection Agency
ERC: Emergency response and control
EPCI: Engineering, procurement, construction, and installation
ERP: Emergency response plan
ERP: Enterprise resource planning
ERT: Emergency response team
ESA: US Endangered Species Act
ESD: Electrostatic discharge
ESD: Emergency shutdown
ESP: Electrical submersible pump
ESP: Expected surface pressure
ESPcc: Expected surface pressure for the completion case
ETA: Event tree analysis
ETAP: Eastern Trough Area Project
EUR: Estimated ultimate recovery
EW: Ewing Bank Gulf of Mexico leasing area
Extra-heavy oil: Crude oil with API gravity of 10 or less
F
FAT: Factory Acceptance Testing
FDP: Field development planning
FEED: Front-end engineering and design
FERC: US Federal Energy Regulatory Commission
FG: Fracture gradient
FIR: Failure investigation reports
FIT: Formation integrity test
FM: Florida Middle Ground Gulf of Mexico leasing area
FMEA: Failure modes and effects analysis
FMECA: Failure modes, effects, and criticality analysis
FMP: Facility measurement point
FNOS: Final notice of sale
FPS: Floating production system
FPSO: Floating production, storage, and offloading (vessel)
FSA: Formal safety assessment
FSO: Floating storage and offloading (vessel)
FTA: Fault tree analysis
G
G&G: Geology and geophysics
GA: Galveston Area Gulf of Mexico leasing area
GA: General arrangement (of offshore equipment)
GB: Garden Banks Gulf of Mexico leasing area
GC/MS: Gas chromatography/mass spectrometry
GC: Gas chromatography
GC: Green Canyon Gulf of Mexico leasing area
GFCI: Ground fault circuit interrupter
GHG: Greenhouse gas
GI: Grand Isle Area Gulf of Mexico leasing area
G-INC: General US INCs. G-110: Operations conducted in a safe and workmanlike manner; G-111: Equipment maintained in a safe condition; G-112: Safety of personnel and all necessary precautions taken to correct and remove any hazards.
GOM: Gulf of Mexico
GOMR: Gulf of Mexico region
GOR: Gas/oil ratio
GP: Gravel pack
GPRA: The US Government Performance and Results Act
GR: Gamma ray
GRC: Galvanized rigid conduit
GV: Gainesville Gulf of Mexico leasing area
H
H2S: Hydrogen sulfide
HA: Hazard analysis
HAZCOM: Hazard communications
HAZID: Hazard identification (study)
HAZOP: Hazard and operability (analysis)
HAZWOPER: Hazardous waste operations and emergency response
HE: Henderson Gulf of Mexico leasing area
Heavy oil: Crude oil with API gravity of 20 or less
HEC: Hydroxyethylcellulose
Henry Hub: The Henry hub is the pricing point for natural gas futures contracts traded on NYMEX. It is a point on the natural gas pipeline system in Erath, Louisiana.
HES: Health, environment, and safety
HH: Howell Hook Gulf of Mexico leasing area
HI: High Island Area Gulf of Mexico leasing area
HP/IP: High-pressure and/or intermediate pressure
HP: High pressure
HPHT: High pressure, high temperature
HSE: Health, safety, and environmental
HT: High temperature
HTHP: High temperature, high pressure
HUET: Helicopter underwater egress training
HWCG: Helix Well Containment Group (an industry cooperative of 24 deepwater E&P companies working in the Gulf of Mexico)
I
I3P: Independent third party
IADC: International Association of Drilling Contractors
IC: Incident commander
IC: Information collection
ICE: Intercontinental Exchange
ICoTA: Intervention and Coiled Tubing Association
ID: Inner diameter
IDLH: Immediately dangerous to life or health
IEA: International Energy Agency
IEEE: Institute of Electrical and Electronics Engineers
IEP/DOCD: Initial exploration plan and development operations coordination documents
IEP: Initial exploration plan
IMO: International Marine Organization
IMT: Intermediate metal conduit
INC: US Incident of Noncompliance
IOC: Independent oil company
IOC: International oil company
IP: Intellectual property
IP: Intermediate pressure
IP: Internet protocol
IPE: International Petroleum Exchange
IPR: Inflow performance relationship
IR: Inspection report
ISM: IMO's International Safety Management (code)
ISN: ISNetworld
ISO 31010: Risk Management Risk Assessment Techniques
ISO: International Standards Organization (formally, International Organization for Standardization)
ITP: Inspection and test plan
J
JHA: Job hazard analysis
JITF: Joint industry task force
JSA: Job safety analysis. Reviews site-specific detailed job hazards. In the final CFR 30 Part 250 subpart S rule, BSEE replaced references to JHAs with references to JSAs.
JV: Joint venture
K
KB: Kelly bushing
KC: Keathley Canyon Gulf of Mexico leasing area
kh: permeability thickness (k = permeability, h = height)
JV: Joint venture
KOP: Kickoff point
KPI: Key performance indicator
kpsi: Thousand pounds per square inch
KW: Key West Gulf of Mexico leasing area
L
LACT: Lease automatic custody transfer (unit)
lbf: pounds force
lbm: pounds mass
LCM: Lost circulation material
LCV: Level control valve
LEEA: Lifting Equipment Engineers Association
LEL: Lower explosive limit
LEL: Lower explosive limit
LFL: Lower flammable limit
LL: Lloyd Gulf of Mexico leasing area
LMRP: Lower marine riser package
LNG: Liquefied natural gas
LOGGS: Lincolnshire Offshore Gas Gathering System
LOPA: Layers of protection analysis
LOT: Leakoff test
LOTO: Lock out tag out
LP: Limited partnership
LPG: Liquefied petroleum gas
LQ: Living quarters
LSH: Level safety high (sensor)
LSL: Level safety low (sensor)
LU: Lund Gulf of Mexico leasing area
LWD: Logging while drilling
M
M&R: Measurement and regulation
MA: Miami Gulf of Mexico leasing area
MAOP: Maximum allowable operating pressure
MASP: Maximum allowable surface pressure
MASP: Maximum anticipated surface pressure
MASPcc: Maximum anticipated surface pressure for the completion case
MAWOP: Maximum allowable wellhead operating pressure
MAWP: Maximum allowable working pressure
MC: Mississippi Canyon Gulf of Mexico leasing area
MCC: Molded case circuit breaker
Mcf: Thousand cubic feet
MCP: Manifold compression platform
MD: Measured depth
md: millidarcy
MEM: Mechanical earth model
MHA: Major hazards analysis
MI: Matagorda Island Area Gulf of Mexico leasing area
MI: Mechanical integrity
ML: Multilateral
MMcf: Million cubic feet
MMPA: US Marine Mammal Protection Act
MMS: The former US Minerals Management Service (MMS), split into three entities
MMS-131: The former name of the BSEE-0131 form, which must be submitted annually
MO: Mobile Gulf of Mexico leasing area
MOC: Management of Change
MODU: Mobile offshore drilling unit
MOPU: Mobile offshore production unit
MOU: Memorandum of understanding
MOU: Mobile offshore unit
MP: Main Pass Area Gulf of Mexico leasing area
MQ: Marqesas Gulf of Mexico leasing area
MS: Mass spectrometry
MSA: Master service agreement
MSC: Management system coordinator
MSDS: Material Safety Data Sheets
MSP: Maximum source pressure
MT: Magnetotellurics
MTBE: Methyl tertiary butyl ether
MU: Mustang Island Area Gulf of Mexico leasing area
MW: Mud weight
MWCC: Marine Well Containment Co. Partners in the nonprofit include BP, BHP Billiton, Apache Corp., Anadarko Petroleum, and Statoil.
MWD: Measurement while drilling
N
NACE: NACE International, formerly the National Association of Corrosion Engineers
NCR: Nonconformance report
NDT: Nondestructive testing
NEPA: US National Environmental Policy Act
NGL: Natural gas liquids
NIOSH: National Institute for Occupational Safety, a US agency working to prevent work-related injury and illness
NOC: National oil company
NOI: Notice of intent
NOIA: National Ocean Industries Association
NORM: Naturally occurring radioactive material
NOW: Non-hazardous oilfield waste
NPDES: National Pollutant Discharge Elimination System, authorized by the US Clean Water Act
NPR: Notice of proposed rulemaking
NPT: Nonproductive time
NPV: Net present value
NTE: Not to exceed
NTL: Notice to Lessees and Operators
NYMEX: New York Mercantile Exchange
O
OAPEC: Organization of Arab Petroleum Exporting Countries
OBC: Ocean-bottom cable (seismic collection)
OBM: Oil-based mud
OCS: Outer Continental Shelf
OCTG: Oil country tubular goods
OD: Outer diameter
OGP: International Association of Oil & Gas Producers
OH: Open hole
OIM: Offshore installation manager
OMB: US Office of Management and Budget
OML: Oil mining lease
ONRR: Office of Natural Resources Revenue
OOC: Offshore Operators Committee
OOIP: Original oil in place
OP: Operating procedure
OPA 90: US Oil Pollution Act of 1990
OPA: US Oil Pollution Act of 1990
OPEC: Organization of Petroleum Exporting Countries
ORM: Other regulated materials (a DOT materials classification)
OSCP: Oil spill contingency plan
OSHA: US Occupational Safety and Health Administration
OSRAM: Oil Spill Risk Analysis Model
OSRP: Oil spill response plan
OT: Overtime
OTC: Offshore Technology Conference
OTJ: On the job
OVSP: Offset vertical seismic profiling
OWR: Oil/water ratio
P
P&A: Plug and abandon
P&ID: Piping and Instrument diagrams
PART: Program Assessment Rating Tool
PB: St. Petersburg Gulf of Mexico leasing area
PBR: Polished bore receptacle
PCV: Pressure control valve
PDC: Polycrystalline diamond compact (drillbit)
PDM: Positive displacement motors
PE: Pensacola Gulf of Mexico leasing area
PESA: Petroleum Equipment Suppliers Association
PFD: Process flow diagrams
PHA: Process hazards analysis
PI: Port Isabel Gulf of Mexico leasing area
PI: Productivity index
PIC: Person in charge
PINC: Potential incident of noncompliance
PL: South Pelto Area Gulf of Mexico leasing area
PLC: Programmable logic controller
PLC: Public limited company
PM: Project management
PN: North Padre Island Area Gulf of Mexico leasing area
POB: Person on board
POOH: Pull out of hole
PP: Pore pressure
PPE: Personal protective equipment
ppg: pounds per gallon (lbm/gal)
PR: Pully Ridge Gulf of Mexico leasing area
PRA: Probabilistic risk assessment
PS: South Padre Island Gulf of Mexico leasing area
PSE: Pressure safety element
PSH: Pressure safety high (sensor)
PSHL: Pressure safety high low
psi: Pounds per square inch
psia: Pounds per square inch (absolute)
psig: Pounds per square inch (gauge)
PSL: Pressure safety low (sensor)
PSM: Process safety management
PSR: Pre-startup review
PSV: Pressure safety valve
PTW: Permit to work
PV: Plastic viscosity
PVC: Polyvinyl chloride
PVC: Pressure control valve
PVSV: Pressure vacuum safety valves
PVT: Pressure/volume/temperature
Q
QA/QC: Quality assurance/quality control
QA: Quality assurance
QAE: Quality assurance engineer
QC: Quality control
QHSE: Quality, health, safety, and environmental
QI: Qualified individual
QRA: Quantitative risk assessment
R
R&D: Records and documentation
R&D: Research and development
R&R: Roles and responsibilities
RACI: Responsible, accountable, consult, and inform (chart)
RCRA: US Resource Conservation and Recovery Act
RFI: Requests for inspection
RFID: Radio-frequency identification
RIH: Run in hole
RIK: Replacement in kind
RIR: Recordable incident rate
RK: Rankin Gulf of Mexico leasing area
RKB: Rotary kelly bushing
RMC: Rigid metal conduit
RN: Release notes
ROP: Rate of penetration
ROV: Remotely operated vehicle
ROW: Right of way
RP: Recommended practice
RPD: Revised application for permit to drill
RPM: Revised application for permit to modify
RPM: Revolutions per minute
RQ: Reportable quantity
RSFO: Regional Supervisor, Office of Field Operations, for BSEE
RT: Real time
RT: Regular time
RUE: Right-of-use and easement
S
SA: Sabine Pass (Louisiana) Gulf of Mexico leasing area
SA: Société Anonyme, Sociedad Anónima
SAFE: Safety analysis function evaluation (charts)
SAGD: Steam-assisted recovery drainage
SAGE: Scottish Area Gas Evacuation
SALM: Single anchor leg mooring
SBM: Synthetic-based mud
SCADA: Supervisory control and data acquisition (system)
SCBA: Self-contained breathing apparatus
SCE: Safety-critical equipment
SCP: Sustained casing pressure
SCSSV: Surface-controlled subsurface safety valve
SCUBA: Self-contained underwater breathing apparatus
SDV: Shutdown valve
SEA: Site-specific environmental assessment
SEG: Society of Exploration Geophysicists
SEIS: Supplemental environmental impact statement
SEMP: Safety and environmental management plan as defined in API RP 75
SEMS: Safety and Environmental Management System policy, as defined in US regulation CFR 30 Part 250 Subpart S
SGS: Steel Gravity Substructure
SHL: Surface hole location
SIMOPS: Simultaneous operations
SIS: Safety instrumented systems
SITP: Shut-in tubing pressure
SLCO: Saudi Light Crude Oil (benchmark crude)
SM: South Marsh Island Gulf of Mexico leasing area
SMI: South Marsh Island Gulf of Mexico leasing area
SMS: Safety management systems
SNIP: Scotland-Northern Ireland Pipeline
SOP: Standard operating procedure
SOP: Suspension of production
Sour: Oil/gas with high sulfur content
SOW: Statements of work
SP: South Pass Area Gulf of Mexico leasing area
SPBM: Single-point buoy mooring system
SPE: Society of Petroleum Engineers
spf: Shots per foot
SPR: US Strategic Petroleum Reserve
SPS: Submerged production system
SPWLA: Society of Petrophysicists and Well Log Analysts (formerly the Society of Professional Well Log Analysts)
SS: Semisubmersible (MOU)
SS: Ship Shoal Area Gulf of Mexico leasing area
SS: Subsea
SSCSV: Subsurface-controlled safety valve
SSCV: Subsea control valves
SSE: Short service employee
SSIV: Subsea isolation valve
SSSV: Subsurface safety valve
SSV: Subsea safety valve
SSV: Surface safety valve
ST: Sidetrack
ST: South Timbalier Area Gulf of Mexico leasing area
STOOIP: Stock tank oil initially in place
STP: Standard temperature and pressure
SW: Water saturation
SWA: Stop work authority
Sweet: Oil/gas that has low sulfur content
SWF: Shallow water flow
SWP: Safe work practices
SX: Sabine Pass (Louisiana) Gulf of Mexico leasing area
T
TAML: Technology Advancement for Multilaterals
Tcf: Trillion cubic feet
TCP: Tubing-conveyed perforating
TDH: Total dynamic head
TEMPSC: Totally enclosed motor-propelled survival craft
THAI: Toe-to-heel air injection (method)
THERP: Technique for human error rate prediction
TLP: Tension leg platform
TP: Tarpon Springs Gulf of Mexico leasing area
TPI: Third-party inspector
TR: Temporary refuge
TRIR: Total recordable incident rate
TS: Tiger Shoal Gulf of Mexico leasing area
TSE: Temperature safety element
TSH: Temperature safety high (sensor)
TTP: Through-tubing perforating
TVD: True vertical depth
TVDSS: True vertical depth subsea
TWA: Time-weighted average
TWT: Two-way travel time
TZ: Transition zone
U
UBD: Underbalanced drilling
UCS: Unconfined compressive strength
UFL: Upper flammable limit
UKCS: UK continental shelf
UKOCS: UK outer continental shelf
UKOOA: UK Offshore Operators Association
UKOOG: United Kingdom Onshore Operators Group
UOT: Unscheduled overtime
USCG: US Coast Guard
USV: Underwater safety valve
V
VK: Viosca Knoll Gulf of Mexico leasing area
VLCC: Very large crude carrier
VN: Vernon Gulf of Mexico leasing area
VR: Vermillion Area Gulf of Mexico leasing area
VRU: Vapor recovery unit
VSP: Vertical seismic profiling
W
WAR: Well activity report
WBS: Wellbore schematic OR wellbore stability
WC: West Cameron Area Gulf of Mexico leasing area
WCD: Worst-case discharge (scenario)
WCID: Well construction interface document
WD: West Delta Area Gulf of Mexico leasing area
WHFP: Wellhead flowing pressure
WHP: Wellhead pressure
WL: Wireline
WOB: Weight on bit
WOC: Waiting on cement
WOR: Water/oil ratio
WR: Walker Ridge Gulf of Mexico leasing area
WTI: West Texas Intermediate (crude benchmark)
X
X-over: Crossover
XRD: X-ray diffraction
XRF: X-ray fluorescence
Y
YM: Young's Modulus
YP: Yield point