Page 444 - Hydrocarbon Exploration and Production Second Edition

Terms and Abbreviations 431

N/G net to gross ratio
NGL natural gas liquid
NGO non-government organisation
NMO normal move out
NMR nuclear magnetic resonance
NOC National Oil Company
NOS net oil sand
NPC net present cost
NPV net present value
OBC ocean bottom cables
OBM oil-based mud
OBP overburden pressure
OBS ocean bottom stations
OD outside diameter
ODT oil down to
OPEC The Organization of the Petroleum Exporting Countries
OPEX operating expenditure
OUT oil up to
OWC oil–water contact
PBR polished bore receptacle
PDC polycrystalline diamond compact
PDF probability density function
PDSG permanent downhole strain gauge
PFS process flow schemes
PGOC possible gas–oil contact
PI productivity index
PIF productivity improvement factor
PIR profit-to-investment ratio
PLT production logging tool
POOH pulling out of hole
POS probability of success
ppm parts per million
PSA production sharing agreement
PSC production sharing contract
PSDM pre-stacked depth migration
PTW permit to work (systems)
PV present value
PVT pressure volume and temperature
PWRI produced water re-injection
QRA quantative risk assessment/analysis
RCI reservoir characterization instrument
RF recovery factor
RFT repeat formation tester
RIF recordable injury frequency
RMS root mean square
ROP rate of penetration