| xxx/a - some unit per annum
AHC - active heave compensated
auv - autonomous underwater vehicle
bcm - billion cubic metres
b/d - barrels per day
bnbbls - billion barrels of reserves
bboe - billion barrels of oil equivalent BOEMRE - Bureau of Ocean Energy Management, Regulation and Enforcement
BOP - blowout preventor
bw/d - barrels of water per day
capex - capital/development expenditure
CEO-CFO-COO - chief executive-financial-operating officer
CNG - compressed natural gas
CS - continental shelf (as in UKCS, Norwegian CS, Outer...)
DECC - UK Dept of Energy and Climate Change
dp - dynamic positioning
dhp - downhole hydraulic pump
dlb - derrick/laybarge
dsv - diving support vessel
DW - deepwater
EBITDA - earnings before interest, tax, depreciation and amortisation
€- euro
EIS - environmental impact statement
EOR/IOR - enhanced/improved oil recovery
EPC - engineering, procurement and construction
EPCI - engineering, procurement, construction and installation
EPCM - engineering, procurement and construction management
esp - electric submersible pump
FID - final investment decision
FDP - field development plan (UK)
FEED - front end engineering and design
flexi-pipe - flexible pipe (either riser or flowlines)
fpso - floating production storage and offloading unit
fps/fpu - floating production system/unit
fsru - floating storage and regasification unit (for LNG)
fsu/fso - floating storage/offloading unit
ha - hectare
HP/T - high pressure and temperature
HXT or H-tree - horizontal subsea xmas tree | IWOCS - intervention and workover control system
jip - joint industry project (as in R&D work)
£ - pounds sterling
LMRP - lower marine riser package
LNG - liquefied natural gas
LOI - letter of intent
LWI - light well intervention
mboe - million barrels of oil equivalent
mcm/d - million cubic meters per day
mmbbls - millions of barrels
MOU - memorandum of understanding
mpv/mpsv - multipurpose (support) vessel
mt/a - million tonnes per annum
mux - multiplexed (as in control systems)
NGL - natural gas liquids
NOIA - National Association of Ocean Industries (USA)
NOK - Norwegian krone
NPD - Norwegian Petroleum Directorate
opex - operating expenditure
PDO - plan for development & operations (Norway)
PDQ - production, drilling and quarters
PIP - pipe-in-pipe
PRT - Petroleum Revenue Tax (UK)
R&D - research and development
rot - remotely operated tool
rov - remotely operated vehicle
$ - US dollars (other dollars will be annotated)
SCR - steel catenary risers
SLOR - single leg offset riser
STOOIP - stock tank original oil in place
SURF - subsea umbilicals, risers and flowlines
tlp - tension leg platform
TTR - top tension riser
TTRD - through tubing rotary drilling
TVD - total vertical depth
ulcc - ultra-large crude carrier
veep - vice president
vlcc - very large crude carrier
VXT - vertical subsea xmas tree | 
