auv - autonomous underwater vehicle
bcm - billion cubic metres
b/d - barrels per day
bw/d - barrels of water per day
bnbbls - billion barrels of reserves
bboe - billion barrels of oil equivalent
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...)
dp - dynamic positioning
dhp - downhole hydraulic pump
dlb - derrick/laybarge
dsv - diving support vessel
€ - euro
EOR/IOR - enhanced/improved oil recovery
EPC - engineering, procurement and construction
EPCI - engineering, procurement, construction and installation
esp - electric submersible pump
FEED - front end engineering and design
flexi-pipe - flexible pipe (either riser or flowlines)
fpso - floating production storage and offloading unit
fps - floating production system
fsru - floating regasification unit (for LNG)
fsu/fso - floating storage/and offloading unit
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
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
MMS - US Minerals Management Service
mpv/mpsv - multipurpose (supply) vessel
mt/a - million tonnes per annum
mux - multiplexed (as in control systems)
NGL - natural gas liquids
NOK - Norwegian krone
NPD - Norwegian Petroleum Directorate
opex - operating expenditure
PIP - pipe-in-pipe
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
SURF - subsea umbilicals, risers and flowlines
tlp - tension leg platform
TTRD - through tubing rotary drilling
ulcc - ultra-large crude carrier
vlcc - very large crude carrier
VXT - vertical subsea xmas tree