| MB | Mistelbach Block|| | Mistelbach block | Mistel Block | bloc Mistelbach | Details |
| MB | Merchant Broker | | | | Details |
| MB | Material Balance | | | | Details |
| MB | Thousand Barrels | | | | Details |
| Mb | Mega bit | | | | Details |
| MB | Millions of barrels | | | | Details |
| MB | MARTINIQUE | | | | Details |
| MB | methylene blue | | | | Details |
| MB | Moody’s Branch | | | | Details |
| MB | Mistelbach Block | | | | Details |
| mbbl | Million Barrels|| | million barrels | Millionen Barrel | millions de barils | Details |
| amb | ambient | | | | Details |
| BMB | Bahrain Middle East Bank | | | | Details |
| Camb | cambrian | | | | Details |
| CHMBR | chamber | | | | Details |
| comb | combined, combination | | | | Details |
| COMB | combustion | | | | Details |
| EGMBE | Ethylene Glycol Mono-Butyl Ether | | | | Details |
| EGMBE | ethylene glycol mono-butyl ether A mutual solvent | | | | Details |
| Emb | Embar | | | | Details |
| EMBL | Emirates Merchant Bank Ltd. | | | | Details |
| FLMB | flammable | | | | Details |
| FMBK | Basket Flowmeter | | | | Details |
| GMB | GAMBIA | | | | Details |
| Gumbo | sticky, reactive shale formation | | | | Details |
| Humb | Humblei | | | | Details |
| Mbal | material balance calculation of fluid production | | | | Details |
| mbd | thousand barrels per day | | | | Details |
| MBD | Millions of barrels per day | | | | Details |
| MBD | thousands of barrel per day | | | | Details |
| mBDF | meters Below Drill Floor | | | | Details |
| MBE | Material Balance Equation | | | | Details |
| MBF | Main Boundary Fault | | | | Details |
| MBF/D | thousand barrels fluid per day | | | | Details |
| MBGS | Michigan Basin Geological Society | | | | Details |
| MBL | Thousand barrels of petroleum liquids; includes crude, condensate & natural gas liquids | | | | Details |
| Mbl | Fls Marble Falls | | | | Details |
| MBN | Compact Borehole Navigator | | | | Details |
| MBNGL | Thousand Barrels of Natural Gas Liquids | | | | Details |
| MBO | management by objective | | | | Details |
| MBO | Thousand barrels of crude oil | | | | Details |
| Mbo/d | thousand barrels oil per day | | | | Details |
| Mbod | thousand barrels of oil per day | | | | Details |
| mboe | million barrels oil equiv | | | | Details |
| MBOE | Thousand barrels of oil equivalent | | | | Details |
| Mboed | thousand barrels of oil equivalent per day | | | | Details |
| MBPD | Million barrels per day | | | | Details |
| MBPD | thousands of barrels per day | | | | Details |
| Mbr | Member | | | | Details |
| MBR | Minimum Bending Ratio | | | | Details |
| mbr | member(geologic) | | | | Details |
| MBRO | Multi-Bore Restriction Orifices | | | | Details |
| MBT | Methylene Blue Dye test (see comment) | | | | Details |
| MBT | Methylene Blue Test (see comment) | | | | Details |
| MBT | methylene blue test | | | | Details |
| mBTHF | meters Below Tubing Head Flange | | | | Details |
| MBTU | thousand British thermal units | | | | Details |
| MBU | Multi rate Build Up | | | | Details |
| MBW/D | thousand barrels of water per day | | | | Details |
| MBWH | Multi Bowl Wellhead | | | | Details |
| MMB | Million Barrels | | | | Details |
| MMBBL | Million barrel | | | | Details |
| MMbd | million barrels per day | | | | Details |
| MMBL | Million barrels of petroleum liquids; includes crude, condensate, & natural gas liquids | | | | Details |
| MMbls | million barrels | | | | Details |
| MMBLS | millions of barrels | | | | Details |
| MMBNGL | Million barrels of natural gas liquids | | | | Details |
| MMBO | Million Barrels of crude Oil | | | | Details |
| MMbod | million barrels of oil per day | | | | Details |
| MMboe | million barrels of oil equivalent | | | | Details |
| MMboed | million barrels of oil equivalent per day | | | | Details |
| MMbpd | million barrels per day | | | | Details |
| MMBTU | Million British Thermal Unit (See comment on BT) | | | | Details |
| MMBtu | million British thermal units | | | | Details |
| MMBTU | Million Metric British Thermal Unit | | | | Details |
| MMBtu/hr | million British thermal units per hour | | | | Details |
| MMBtu/scf | million British thermal units per standard cubic foot | | | | Details |
| NIMBY | Not In My Backyard | | | | Details |
| OMB | Office of Management and Budget | | | | Details |
| PLMB | plumbing | | | | Details |
| Samba | Saudi American Bank | | | | Details |
| SCM(MB) | Subsea Control Module (Mounting Base) | | | | Details |
| TMB | Twin Monobore Wellhead (Dual Wellhead) | | | | Details |
| UMB | umbrella(s) | | | | Details |
| ZMB | ZAMBIA | | | | Details |
| MBWA | Management By Walking (Wandering) Around | | | | Details |
| Gemba | See Genba | | | | Details |
| MBH | Matthews, Brons, and Hazebroek | | | | Details |
| CMB | Channel Mouth Bar | | | | Details |
| mbbl | Million Barrels | | | | Details |
| MMBC | Million Barrels Condensate | | | | Details |
| MMBC/D | Million Barrels Condensate per day | | | | Details |
| MBC | Thousand Barrels Condensate | | | | Details |
| MBC/D | Thousand Barrels Condensate per day | | | | Details |
| mb/d | Million Barrel per Day | | | | Details |
| MBSL | Meter Below See Level | | | | Details |
| MBSL | Meters Below See Level | | | | Details |
| FMB | Flowing Material Balance | | | | Details |
| mbar | millibar | | | | Details |
| MBq | megabecquerel | | | | Details |
| CMBD | Resistivity Medium Button down from RAB | | | | Details |
| CMBU | Resistivity Medium Button up from RAB | | | | Details |
| embay | embayed | | | | Details |
| rhmb | rhombs | | | | Details |
| rhmbc | rhombic | | | | Details |
| MBN | Compact Borehole Navigation | | | | Details |
| MbO | Management by Objectives | | | | Details |
| MMBBL | Million Barrels of Oil Equivalent | | | | Details |
| PMBOK | Project Management Book Of Knowledge | | | | Details |
| MBS | mortgage backed security | | | | Details |
