دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the aging of specimens for test purposes at normal atmospheric pressure for a designated period of time under specified conditions of temperature and humidity.

n: Stop drilling before pulling out of hole and continue circulating to carry cuttings to the surface. Be convenient for observing rock specimen and geologic analysis.

a V-shaped pattern on a fatigue or brittle-fracture surface. The pattern may also be one of straight radial lines on round specimens.

Canadian Institute of Mining

n: a decimal system of weights and measures based on the metre as the unit of length, the gram as the unit of weight, the cubic metre as the unit of volume, the litre as the unit of capacity, and the square metre as the unit of area. The international system of measurement (SI) is based on the metric system.

n pi: 1. value that indicates hook load or force, read from a weight indicator;1 point = 1,000 pounds, or 500 decanewtons. 2. in mud density measurement, the portion of the muds weight expressed in decimal points. For example, a mud that weighs 12.2 pounds per gallon (1,461.8 kilograms per cubic metre) weighs two points more than 12 pounds ( 1,438 kilograms). Also, if a 12.2 potmd-per-gallon muds density is increased to 12.5 pounds per gallon (1,497.8 kilograms per cubic metre),the density has been raised by 3 points.

the number of significant decimals expressed in a measurement.