GLOSSARY
299
MEOR: Microbial enhanced oil recovery.
Methanol: A fuel typically derived from natural gas, but which can
be produced from the fermentation of sugars in biomass.
Microcrystalline wax: Wax extracted from certain petroleum
residua and having a finer and less apparent crystalline structure than paraffin wax.
Middle distillate: Distillate boiling between the kerosene and
lubricating oil fractions.
Migration (primary): The movement of hydrocarbons (oil and
natural gas) from mature, organic-rich source rocks to a point
where the oil and gas can collect as droplets or as a continuous
phase of liquid hydrocarbon.
Migration (secondary): The movement of the hydrocarbons as a
single, continuous fluid phase through water-saturated rocks,
fractures, or faults followed by accumulation of the oil and
gas in sediments (traps, q.v.) from which further migration is
prevented.
Million: 1 x 10
6
.
Mill residue: Wood and bark residues produced in processing logs
into lumber, plywood, and paper.
Mineral hydrocarbons: Petroleum hydrocarbons, considered mineral because they come from the earth rather than from plants
or animals.
Mineral oil: The older term for petroleum; the term was introduced
in the 19th century as a means of differentiating petroleum
(rock oil) from whale oil which, at the time, was the predominant illuminant for oil lamps.
Minerals: Naturally occurring inorganic solids with well-defined
crystalline structures.
MMbbls: 1,000,000 barrels of oil.
MMBOE: 1,000,000 barrels of oil equivalent.
MMcf: 1,000,000 cubic feet of natural gas.
MMcfe: 1,000,000 cubic feet of gas equivalent, determined using
the ratio of 6 Mcf of natural gas to 1 bbl of crude oil, condensate
or natural gas liquids.
Modified/unmodified diesel engine: Traditional diesel engines
must be modified to heat the oil before it reaches the fuel injectors in order to handle straight vegetable oil. Modified, any diesel engine can run on veggie oil; without modification, the oil
must first be converted to biodiesel.
299
MEOR: Microbial enhanced oil recovery.
Methanol: A fuel typically derived from natural gas, but which can
be produced from the fermentation of sugars in biomass.
Microcrystalline wax: Wax extracted from certain petroleum
residua and having a finer and less apparent crystalline structure than paraffin wax.
Middle distillate: Distillate boiling between the kerosene and
lubricating oil fractions.
Migration (primary): The movement of hydrocarbons (oil and
natural gas) from mature, organic-rich source rocks to a point
where the oil and gas can collect as droplets or as a continuous
phase of liquid hydrocarbon.
Migration (secondary): The movement of the hydrocarbons as a
single, continuous fluid phase through water-saturated rocks,
fractures, or faults followed by accumulation of the oil and
gas in sediments (traps, q.v.) from which further migration is
prevented.
Million: 1 x 10
6
.
Mill residue: Wood and bark residues produced in processing logs
into lumber, plywood, and paper.
Mineral hydrocarbons: Petroleum hydrocarbons, considered mineral because they come from the earth rather than from plants
or animals.
Mineral oil: The older term for petroleum; the term was introduced
in the 19th century as a means of differentiating petroleum
(rock oil) from whale oil which, at the time, was the predominant illuminant for oil lamps.
Minerals: Naturally occurring inorganic solids with well-defined
crystalline structures.
MMbbls: 1,000,000 barrels of oil.
MMBOE: 1,000,000 barrels of oil equivalent.
MMcf: 1,000,000 cubic feet of natural gas.
MMcfe: 1,000,000 cubic feet of gas equivalent, determined using
the ratio of 6 Mcf of natural gas to 1 bbl of crude oil, condensate
or natural gas liquids.
Modified/unmodified diesel engine: Traditional diesel engines
must be modified to heat the oil before it reaches the fuel injectors in order to handle straight vegetable oil. Modified, any diesel engine can run on veggie oil; without modification, the oil
must first be converted to biodiesel.