Page 22 - Practical Well Planning and Drilling Manual

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Practical Well Planning and Drilling Manual
HW Heavyweight
IBOP Inside blowout preventer
ID Inside diameter
IEU Internal-external upset
IOEM Invert oil emulsion mud
ISIP Initial shut-in pressure
IU Internal upset
JB Junk basket
jt Joint
KB Kelly bushing
KOP Kickoff point
LCM Lost circulation material
LCTD Last crystal to dissolve
LD Lay down
LDL Litho Density Log
Lig Lignosulphonate
LIH Left in hole
LP Low pressure
LTC Long thread and coupling
LWD Logging while drilling
MD Measured depth
MDT Modular Formation Dynamics Tester
ML Mudline
MSCT Mechanical Sidewall Coring Tool
mu Makeup
MUT Make up torque
mw Mud weight
ND Nipple down
NGS Natural Gamma Ray Spectrometry Log
NML Nuclear Magnetism Log
NPLT Nuclear Porosity Lithology Tool
NU Nipple up
NV Nozzle velocity
OBDT Oil Base Dipmeter Tool
OBM Oil based mud
OD Outside diameter
OS Overshot
P&A Plug and abandon
PAC Poly anionic cellulose
PBR Polished bore receptacle
PBTD Plug back total depth

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