Drilling Glossary

Acronyms and Abbreviations

AFP	Annular Friction Pressure	AIS	Automatic Identification System	API	American Petroleum Institute
APV	Air Pressure Vessel	AX/VX	Ring gasket	BCP	Blowout Contingency Plan
BHA	Bottomhole Assembly	BHP	Bottomhole Pressure	BOEMRE	Bureau of Ocean Energy Management, Regulation and Enforcement
BOP	Blowout Preventer	BOPE	Blowout Preventer Equipment	BSEE	Bureau of Safety & Environmental Enforcement
BSR	Blind Shear Ram	BTF	Blowout Task Force	BU	Business Unit
C&K	Choke and Kill	CBHP	Constant Bottomhole Pressure	CBL	Cement Bond Log
CCC	Central Control Console	CLFP	Choke and Kill Line Friction Pressures (also used for Choke Line Friction Pressures)	CLP	Classification, Labeling and Packaging
CO2	Carbon dioxide	COC	Certificate of Conformance	CRA	Corrosion Resistant Alloy
CRT	Casing Running Tool	CSGS	Critical Static Gel Strength	CSR	Casing Shear Ram
CWOP	Completing the Well on Paper (also, Completion Well Optimization Process)	DCP	Driller’s Control Panel	DGD	Dual Gradient Drilling
DGPS	Differential Global Positioning Satellite	DOD	Department of Defense (US)	DP	Dynamic Positioning or Dynamic Positioned
DWOP	Drill Well on Paper	DWWCG	Deepwater Well Control Guidelines	ECD	Equivalent Circulating Density
EDS	Emergency Disconnect Sequence	EHBS	Electro-Hydraulic Back-Up System	EHBS	Emergency Hydraulic Back-Up System
EMW	Equivalent Mud Weights	ERD	Extended Reach Drilling	ERT	Emergency Response Team
ESD	Emergency Shut Down	ETF	Emergency Task Force	FAT	Factory Acceptance Test
FEMA	Federal Emergency Management Agency (US)	FIT	Formation Integrity Test	FLOT	Flying Lead Orientation Tool
FOSV	Full Opening Safety Valve	GOM	Gulf of Mexico	GOR	Gas Oil Ratio
GPS	Global Positioning Satellite	H2S	Hydrogen Sulfide	HID	Hydraulic Isolation Depth
HPHT	High-Temperature High-Pressure	HPU	Hydraulic Power Unit	HSE	Health, Safety and the Environment
HSEQ	Health, Safety, Environment and Quality	IADC	International Association of Drilling Contractors	ICP	Initial Circulating Pressure
ICS	Incident Command System	ID	Inside Diam	IR	Infrared
ISO	International Standards Organization	KT	Kick Tolerance	LCM	Lost Circulation Material
LMRP	Lower Marine Riser Package	LOP	Leak-Off Pressure	LOT	Leak-Off Test
LVE	Low Volumetric Expansion	LWC	Loss of Well Control	LWD	Logging While Drilling
MAASP	Maximum Allowable Annulus Surface Pressure	MAE	Major Accident Event	MASP	Maximum Anticipated Surface Pressure
MAWP	Maximum Anticipated Water Pressure	MD	Measured Depth	MGS	Mud Gas Separator
MMS	Minerals Management Service	MOC	Management of Change	MODU	Mobile Offshore Drilling Unit
MOP	Minimum Operating Pressure	MPD	Managed Pressure Drilling	MRT	Marine Riser Tensioner
MUX	Multiplex	MW	Mud Weight	MWD	Measurement While Drilling
NAF	Non-Aqueous Drilling Fluid	NIMS	National Incident Management System	NORSOK	Norwegian Petroleum Standards
OB	Overburden	OBM	Oil-Based Muds	OD	Outer Diam
OEM	Original Equipment Manufacturer	OHSAS	Occupational Health and Safety Advisory Services	ORM	Operational Risk Management
ORT	Onsite Response Team	OSHA	Occupational Safety and Health Administration	PMCD	Pressurized Mud Cap
PP	Pore Pressure	PPD	Pore Pressure Detection	PPDSPA	Pore Pressure Detection Single Point of Accountability
PPFG	Pore and Fracture Pressure	ppg	Pounds Per Gallon	PR	Public Relations
PWD	Pressure While Drilling	QA/QC	Quality Assurance / Quality Control	RCD	Rotating Control Device
RFC-HSE	Returns Flow Control	RITT	Riser Insertion Tube Tool	RKB	Rotary Kelly Bushing
ROP	Rate of Penetration	ROV	Remotely Operated Vehicle	RWP	Rated Working Pressure
SBM	Synthetic-Based Muds	SCP	Slow Circulating Pressure	SCR	Slow Circulating Rates; also Silicon Controlled Rectifier
SEMS	Safety and Environmental Management System	SHE	Safety, Health and the Environment	SICP	Shut-In Casing Pressure
SIDPP	Shut-In Drillpipe Pressure	SIMOPS	Simultaneous Operations	SIT	System Integrity Test
SPM	Side Pocket Mandrel	SPP	Slow Pump Pressure	SWD	Seismic While Drilling
SWF	Shallow Water Flow	TCP	Toolpusher’s Control Panel	TD	Total Depth
TJ	Telescopic Joint	TMS	Tether Management System	TOC	Top of Cement
TVD	True Vertical Depth	TVH	True Vertical Height	UB	Underbalanced
UPS	Uninterruptible Power Supply	VIV	Vortex Induced Vibration	VOC	Volatile Organic Compounds
WI	Well Integrity	WICD	Well Control Interface Document	WOC	Waiting on Cement
WSOG	Well Specific Operating Guideline (Criteria)