===== Terms beginning with M =====

[[Machine computation]]

[[Macroscopic anisotropy]]

[[Macroscopic capture cross section]]

[[Magma]]

[[Magmatic water]]

[[Magnaflux]]

[[Magnetic declination]]

[[Magnetostriction]]

[[Make a trip]]

[[Mandrel]]

[[Manometer]]

[[Manual shift]]

[[Marine drilling riser]]

[[Mark]]

[[Mark detector]]

[[Marker bed]]

[[Marl]]

[[Marsh funnel]]

[[Mass absorption]]

[[Mast]]

[[Master bushing]]

[[Matrix]]

[[Maximum pressure rating]]

[[Maximum reading thermometer|Maximum-reading thermometer]]

[[Maximum temperature rating]]

[[Md]]

[[Measured depth]]

[[Measurements while drilling|Measurements-while-drilling]]

[[Measure point]]

[[Mechanical shift]]

[[Mechanical zero]]

[[M electrode]]

[[Memorizer]]

[[Merged data]]

[[Metamorphic rock]]

[[Meteoric water]]

[[Metric system]]

[[Metric ton]]

[[Mho]]

[[Mho per meter]]

[[Mica]]

[[Microannulus]]

[[Microinverse]]

[[Microlaterolog]]

[[Microlog]]

[[Micronormal]]

[[Microresistivity log]]

[[Micro Seismogram|Micro-Seismogram]]

[[Microspherically focused log]]

[[Migration]]

[[Millidarcy]]

[[Milligal]]

[[Millivolt box]]

[[Mineral]]

[[Mineral composition of rocks]]

[[mms and rmo|Minerals Management Service (MMS) and Royalty Management Operations (RMO)]]

[[Minute mark|Minute-mark]]

[[Miscible drive]]

[[Mist flow]]

[[MKS]]

[[Mmho]]

[[MMS]]

[[MN spacing]]

[[Mobility]]

[[Modified Schmidt diagram]]

[[Mol]]

[[Mold]]

[[Moldic porosity]]

[[Mole]]

[[Molecule]]

[[Molecular weight]]

[[Mole percent]]

[[Monitor curve]]

[[Monocable]]

[[Monoelectrode]]

[[Montmorillonite]]

[[MOP]]

[[Movable oil plot]]

[[Mud]]

[[Mud ball]]

[[Mud cake]]

[[Mud cup]]

[[Mud density]]

[[Mud filtrate]]

[[Mud hose]]

[[Mud log]]

[[Mud logging]]

[[Mud pit]]

[[Mud resistivity log]]

[[Mud pump]]

[[Mud viscosity]]

[[Mud weight]]

[[Multiphase flow]]

[[Multiple completion]]

[[Multishot survey]]

[[MWD]]