دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

v: To stop drilling or production operations when it becomes unprofitable. A wildcat may be abandoned after poor results from a well test. Cement plugs are placed in the wellbore to prevent fluid migration between different zones.

a resin formed by reaction of polyhydric alcohols and polybasic salts. Saturated or unsaturated oils or fats are involved.

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.

an operation or transaction that results in movement of gas in a direction opposite of the normal flow direction in a pipeline.

a backlash of tongs that results in a grip in the wrong direction.

a set of formation blocks, separated by normal faults into different elevations.

n: water that contains relatively low concentrations of soluble salts. Brackish water is saltier than fresh water but not as salty as salt water.

n: The water which contains lesser salt, including hard water whose pH is from 7 to 9. Usually the content of chloride is less than 18970g/L. It comes from coastal waters, bay, variole or inland lake. This kind of water contain more Ca2+ and Mg2+. We should

indefinite term meaning water with small amounts of salt. Saltier than fresh water.