دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a laboratory unit used for evaluating or testing drilling fluids. One gram of material, when added to 350 millilitres of fluid, is equivalent to 1 pound of material added to one 42-gallon barrel of fluid.

a laboratory measuring scale for expressing mixtures of products used to formulate muds. One gram of material added to 350 cc of liquid is equivalent to 1 lb of material added to a 42 gallon barrel.

n: (cm3) a commonly used unit of volume measurement in the metric system equal to 10-6 cubic metre, or I millilitre. The volume of a cube whose edge is 1 centimetre.

n: in sampling petroleum and petroleum products, a small sample, usually 1.5 millilitres (0.05 ounce),obtained by the probe and sampler in an automatic sampling system. Several grabs constitute a sample. graben n: a block of the earths crust that has slid downward between two faults. Compare horst.

log-inject-log.

n: one-thousandth of a litre. In analysing drilling mud. this term is used interchangeably with cubic centimetre. A quart equals 964 millilitres.

abbr: megajoule. m1 abbr: millilitre.

megajoule. 1,000,000 joules.

n: one of a series of open tanks, usually made of steel plate, through which the drilling mud is cycled to remove sand and fine sediments. Additives are mixed with the mud in the tanks, and the fluid is temporarily stored there before being pumped back into the well. Modem rotary driJ1ing rigs are gen- erally provided with ~ or more tanks, fitted with txlilt-in piping, valves, and mud agitators. Also called mud pits.

n: see drilling fluid tank.

abbr: the phenolphthalein alkalinity of the filtrate, reported as the number of millilitres of 0.02 Normal (N/50) acid required per millilitre of filtrate to reach the phenolphthalein end point. Pc is a measure of the alkalinity of the drilling mud. Usually, muds should have a high alkalinity (pH) to ensure adequate performance.

friction pressure – may be annulus or tubing.

n: a laboratory unit used in pilot testing. One gram or pound equivalent, when added to 350 millilitres of fluid, is equivalent to I pound/barrel.

n: A downhole tool which has minor interspace with borehole,usually be fixed on the drill string.