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ADP |
Aluminium drill pipe |
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AFE |
Authority for expenditure |
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API |
American Petroleum Institute |
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B/U |
Bottoms up |
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BHA |
bottom hole assembly |
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BHOsub |
Bottom hole orientation sub |
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BHP |
Bottom hole pressure |
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BOD |
Basis of Design |
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BOP |
Blow out preventer |
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CBL |
Cement bond log |
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CHH |
Casing head housing |
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CLP |
Choke line pressure |
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CMC |
Carboxymethylcelluose |
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DC |
Drill collar |
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DDR |
Daily drilling report |
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DIMS |
Drilling information management system |
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DMS |
Drilling management system |
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DP |
Drill pipe |
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DS1 |
Drill string standard |
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DST |
Drill string test |
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DSV |
Down hole safety valve |
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DSV |
Drilling supervisor |
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ECD |
Equivalent circulating density |
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ECP |
External casing packer |
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ECPICV |
External casing packer internal control valve |
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EMW |
Equivalent mud weight |
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ESD |
Emergency shut down |
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FG |
Formation pressure equivalent density |
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FIT |
Formation integrity test |
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FMS |
Flush mounted slips |
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FMS |
Formal method statement |
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FRAC |
Fracture |
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GOR |
Gas oil ratio |
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HAZOP |
Hazard and operability analysis |
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HCR |
High closing ratio |
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HP |
High pressure |
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HPE |
Hydrostatic pressure equivalent of 1bbl mud in well |
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HPHT |
High pressure high temperature |
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HWDP |
Heavy weight drill pipe |
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IBOP |
Internal blow out preventer |
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ID |
Internal diameter |
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IFG |
Influx density |
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ISP |
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IWCF |
International well control forum |
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JSA |
Job Safety Analysis |
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KOP |
Kick off point |
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KPI |
Key performance indicator |
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KT |
Kick tolerance |
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LCM |
Lost circulation material |
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LMRP |
Lower marine riser package |
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LOT |
Leak off test |
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LP |
Low pressure |
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LTI |
Lost time incident |
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LWD |
Logging while drilling |
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MAASP |
Maximum annular allowable surface pressure |
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MD |
Measured depth |
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MMSCF/D |
Million standard cubic feet per day |
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MODU |
Mobile offshore drilling unit |
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MPI |
Magnetic particle inspection |
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MPLT |
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MR |
Migration rate |
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MST |
Magnetic steering toll |
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MW |
Mud weight |
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MWD |
Measurement while drilling |
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NDT |
Non destructive testing |
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NMDC |
Non-magnetic drill collar |
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NPT |
Non productive time |
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OBM |
Oil based mud |
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OD |
Outside diameter |
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OIM |
Operations installation manager |
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OWE |
Offshore well engineer |
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P&IDS |
Piping and instrumentation diagram |
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PBR |
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PBR |
Polished ball receptacle |
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PCWD |
Pressure control while drilling - rotating diverter / head |
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PDC |
Polycrystalline diamond compact |
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PDHG |
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PDM |
Positive displacement mud motor |
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PFD |
Process flow diagram |
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POB |
Personnel on board |
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POBM |
Pseudo oil based mud |
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POOH |
Pull out of hole |
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ppg |
Pounds per gallon |
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PSI |
Pounds per square inch |
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PTW |
permit to work |
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PVT |
Pit volume totaliser |
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RDM |
Regional drilling manager |
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RIH |
Run in hole |
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ROV |
Remotely operated vehicle - robotic submarine |
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RPM |
Revolutions per minute |
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RTTS |
retrievable packer |
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SCR |
Slow circulation rate |
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SCSSV |
Sub surface safety valve |
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SF |
Safety factor |
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SICP |
Shut in casing pressure |
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SIDPP |
Shut in drill pipe pressure |
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SPM |
Strokes per minute |
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SSP |
Stand pipe pressure |
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TCL |
Tubing conveyed logging |
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TFA |
Total force area |
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TIW |
Texas iron works |
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TOC |
Top of cement |
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TRSSSV |
Tubing retrievable sub surface safety valve. |
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TVD |
Total vertical depth |
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TVDRKB |
Total vertical depth rotary Kelly bushing |
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UBD |
Under balanced drilling |
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UBHOsub |
Universal bottom hole orientation sub |
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ULSEL |
Ultra-long spaced electronic log |
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VBR |
Variable bore rams |
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W O H |
Weight on hook |
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W&W |
wait & weight well kill method |
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WBM |
Water based mud |
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WEG |
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WOB |
Weight on bit |
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WWD |
World wide drilling |