Abbreviation List

Abbreviation	Meaning	Explanation
4PC	4-Point Check	Safety
AECD		company
AFE	Authorization For Expenditure / Approval For Expenditure	Cost
AGR		Company
ANN	Artificial Neural Networks	prediction tool
API	American Petroleum Institute
API RP	American Petroleum Institute Recommended Practice
APPE	Average Absolute Percent Error	error calculation
ATK	Auto Trak	BHA motor
AV	Apparent Viscosity
AV	Annular Velocity
bbl	barrel (usually US Oil Barrel)
BH	Bingham	rheology
BH	BottomHole	well
BHA	BottomHole Assembly	component downhole
BHP	Bottomhole Pressure
bn	billion	unit
BOP	Blow-Out Preventer	component
BOT	Baker Oil Tools	Company
BPD	Barrels Per Day
BS&W	Basic Sediment & Water	quantification of the impurities in the crude
C&WI	Completion & Well Intervention
CAPEX	Capital Expenditure	The initial cost
CBL	Cement Bond Log	cement evaluation techniques
CDTP	Constant-Density Temperature Profile	the temperature profile which produces a constant density throughout the entire depth interval
CFD		bit
CFD	Computational Fluid Dynamics
CMC	CarboxyMethylCellulose	mud additive
CPF	Cost Per Feet	bit selection
CSD	Casing Setting Depth
CSDP	Compressive Service DrillPipe	Drillcollar
CSG	Casing
CT	Coiled Tubing
D	Depth	well
D	darcy	unit
DCE	Drilling Cost Equation
DE	Drilling Engineer
DECC	Department of Energy & Climate Change	UK
DG	Dual-Gradient
DGD	Dual-Gradient Drilling
DH	DownHole
DKD	Dynamic Kill Drilling (fluid)
DNV	Det Norske Veritas	company
DP	Drillpipe
DP-meter	Differential Pressure Transmitter
DSV	Drill-string Valve / Drilling Supervisor
DTF	Dynamic Testing Facility
E	East
ECD	Equivalent Circulating Density
EMW	Equivalent Mud Weight
EOQ	European Organization for Quality
EPCIC	Engineering, Procurement, Construction, Installation & Commissioning
ERD	Extended Reach Drilling
ESD	Equivalent Static Density
EXMT	Extended X-Mas Tree
FG	Formation gradient
FLNG	Floating Liquified Natural Gas
ft	Feet	unit
G	gravity
gal	gallon
GC	Green Clay	Formation
GE	General Electric	company
GLV	Gas-Lift Valve
GOC	Gas-Oil Contact
GOM	Gulf of Mexico	area
GoM	Gulf of Mexico	area
gpm	gallons per minute	unit
HB	Herschel-Bulkley	rheology model
HEC	Hydroxyethyl-Cellulose
HMR	Halliburton Memory Recorder	tools
HP	Horsepower / High Pressure
HP	High-Pressured
HPG	HydroxyPropylGuar
HPHT	High-Pressure High-Temperature	pressure/temperature state
HPLT	High-Pressure Low-Temperature	pressure/temperature state
HSE	Health, Safety and Environment
HSI	Horsepower per square inch	bit hydraulics
HSP	Hydrostatic Pressure
HWDP	Heavy-Weight Drillpipe
IADC	International Association of Drilling Contractors
ID	Inner Diameter
ID	Internal Diameter
ID	Inside Diameter
IE	Industri Energi
IISD	Det internasjonale instituttet for bærekraftig utvikling
in	inch
IRIS	International research institute of Stavanger
ISM	International Safety Management (Code)
JIP	Joint Industry Project
kg	kilo
KIP
lam	laminar
lbf	pound-force
lbm	pound mass
LNG	Liquified Natural Gas
LNR	Liner
LP	Low-Pressured
LPG	Liquified Petroleum Gas
LPHT	Low-Pressure High-Temperature	pressure/temperature state
LPLT	Low-Pressure Low-Temperature	pressure/temperature state
LRRS	Low Riser Return System
M	Million	number
m	meter	unit
MCD	Mechanical Cleaning Devices	hole cleaning
MODU	Mobil Offshore Drilling Unit
MPCT	Model Predictive..
MPD	Managed Pressure Drilling
MSL	Measured Sea Level
MTV	Minimum Transport Velocity
MW	Mudweight / Molecular Weight
MW	Mudweight
MWD	Measurement While Drilling
N	North / Newton
NCEI	norsk senter for ekspertise og instrumentering
NCS	Norwegian Continental Shelf	area
NFKR	Norsk Forening for Kvalitet og Risikostyring
NIOC	National Iranian Oil Company	company
NOFO	Norsk Oljevernforening for Operatørselskap	organization
NOV	National Oilwell Varco	company
NPT	Non-Productive Time
NSGI	Norwegian Sea Gas Infrastructure	company
O&G NWE	Oil & Gas, North West Europe
OBD	Overbalanced Drilling
OBM	Oil-Based Mud
OD	Outer Diameter
OH	Open Hole
OPEX	Operational Expenditure	The operational cost each year
ORS	Ocean Riser Systems	Company
OSV	Offshore Support Vessels
OWC	Oil-Water Contact
oz	ounce	unit
P	Pressure
P	Pressure drop
Pa	Pascal	unit
PAC	Polyacrylamid	Mud viscosifier
PAC	PolyAnionic Cellulose
PAO	PolyAlphaOlefin	additive
PBR
PDC	Polycrystalline Diamond Compact	Bit
PDH	Partially Dehydrated Gelled	mud
PE	Petroleum Engineering	school
PH	Power of Hydrogen (not defined)	unit
PID	Proportional Integral Derivative	Control system taking into account these 3 parameters
PL	Power Law	rheology
PLR	Pressure Loss Ratio
P-pack	Production Packer
PPG	Pounds Per Gallon	unit
PSI	Pounds Per Square Inch	unit
psi	Pound-force Per Square Inch	unit
psia	Pound-force Per Square Inch Absolute	unit
psig	Pound-force Per Square Inch Gauge	unit
Ptil	Petroleumstilsynet	company
PUD	Plan for utbygging og drift
PV	Plastic Viscosity	mud
PVC	Polyvinyl Chloride	to make pipes
PVT	Pressure Volume Temperature	core data
QC	Quality Control	cement evaluation techniques
R	Correlation coeffiecient	error calculation
RC	Roller Cone	Bit
RCH	Rotating Control Head	component
RE	Reactive Element
RFP	Request for Proposal
RKB	Rotary Kelly Bushing
RMR	Riserless Mud Return	System by AGR
RMSE	Root Mean Square Error	error calculation
RNNP	Risikonivårapporten
ROB	Rotating Off-Bottom
ROI
ROP	Rate Of Penetration
ROV	Remotely Operated Vehicle
RP	Recommended Practice	see API RP
RPM	Rotations Per Minute/Revelations Per Minute
RRR	reserveerstatningsrate
S	South	parameter
SAGD	Steam-Assisted Gravity Drainage	system
SBL	Segmented Bond Log	cement evaluation techniques
SBM	Single Buoy Mooring	company
SDØE	Statens direkte økonomiske engasjement	1983
SF	Safety Factor	parameter
sg	Specific Gravity	unit
SI	Système International (d'unités)	unit system
SICP	Shut-In Casing Pressure	pressure
SIDPP	Shut-In DrillPipe Pressure	pressure
SIP	Shut-In Pressure	parameter
SLB	Schlumberger	Company
SOM	Suction Module	RMR component
SPE	Society of Petroleum Engineers	organization
SpG	Specific Gravity	mud
SPP	Standpipe Pressure	parameter
ST	Straight Tubing	vs coiled tubing
SWE	Senior Well Engineer	job position
T	Temperature	parameter
TBG	Tubing
TBT	Tool-Box Talk	Safety
TCI	Tungsten Carbide Insert	Bit
TCP	Tubing Conveyed Perforating
TD	Terminal Depth / True Depth	well
TFA	Total Flow Area	nozzles
TJ	Tooljoint	drillstring component
TLP	strekkstagplattformer
TOC	Top Of Cement	well
TOL	Top Of Liner	well
TRQ	Torque	parameter
TSP	Thermally Stable Polycrystalline	bit
TTRD	Through Tubing Rotary Drilling	drilling technique
TUDRP	Tulsa University Drilling Research Projects
TVD	Terminal Vertical Depth / True Vertical Depth	parameter
U	University
UBD	Underbalanced Drilling	method
ULTHI	Umbilical-Less Tubing Hanger Intervention	component
UR	Upper Region	parameter
USD	United States Dollars	unit
USIT	UltraSonic Imager Tool	cement evaluation techniques
V	Volume / Volt	parameter / unit
VCO
VDL	Variable Density Log	cement evaluation techniques
VIV	Vortex-Induced Vibrations
VP	Vøring Plateau	area
VSD	Variable Speed Drive	compressor
W	West	direction
WBM	Water-Based Mud	type of mud
WH	Wellhead	component
WL	Wireline	method
WO
WOB	Weight On Bit	parameter
XCD	Xanthan Gum
XMT	X-Mas Tree	major component
XO	Crossover	component
YP	Yield Point	mud
YPL	Yield Power Law	rheology model
Y-PL	Yield Power Law	rheology model
YS	Yield Stress	parameter