دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

a secondary fault, often in a set, with an opposite direction to the primary fault.

n: Used in the condition of ultra high temperature and pressure, usually from 3000m to 4800m.

n: See API filtration.

n: The method that can measure drilling fluid filtration regulated by API. Refered to the filtrated volume of drilling fluid in the condition of routine pressure of 690kpa(+ or -35kpa),filter area of 4580mm2(+ or - 60mm2) and 30min.

n: the standard unit of gamma ray measurement. Standardisation of this unit results from the normalisation of the detector-measurement systems of all primary service companies in the API test pits at the University of Houston. The API gamma ray unit is defined as 1/200 of the difference in log deflection between two zones of different gamma ray intensity. The test pit is constructed so that the average midcontinent shale will record about 100 API gamma ray units.

n: the standard unit of measurement for neutron logs. Standardisation of this unit results from the calibration of each logging tool model in the API neutron test pit at the University of Houston.

n: the product of volts and amperes in an AC circuit when voltage and current are measured separately. If voltage and current are not in phase, apparent power is greater than true power.

v: to join metals by utilising the arc created between the welding rod, which serves as an electrode, and a metal object. The arc is a discharge of electric current across an air gap. The high temperature generated by the arc melts both the electrode and the metal, which fuse.

n: a sandstone in which less than 15% of the total volume is silt and clay.

n: Schlumberger wireline tool designed to acquire multilevel triaxial seismic data in cased holes. Provides high quality seismic images in relatively close proximity to the wellbore.