دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a substance of dark to black colour consisting almost entirely of carbon and hydrogen with very little oxygen, nitrogen, or sulphur. Bitumens occur naturally and can also be obtained by chemical decomposition.

pyrogeneous, essentially non reactive, hydrocarbon. Most bitumen is not considered as movable through the reservoir under normal conditions of flow unless heated.

a soft coal, intermediate in coal development, containing 15 to 20% volatiles.

an asphatic or tar based protective surface coating.

Byron Jackson Service Company.

abbr: black;used in drilling reports. black granite n: see diorite.

balance line.

n: the total loss of power on a drilling rig or production facility

a measure of the particle size of a cement.

an unperforated piece of casing or tubing in an otherwise perforated section. Used for isolation.

n: casing without perforations.