دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: formation fluid pressure equivalent to about 0.465 pounds per square inch per foot (10.5 kilopascals per metre) of depth from the surface. If the formation pressure is 4,650 pounds per square inch (32,062 kilopascals) at 10,000 feet (3,048 metres),it is considered normal.

n: the pressure developed by a column of fluid as the depth of the column increases when the column contains a fluid of normal density. This gradient varies from area to area, but along the Gulf Coast of the United States, it is considered to be 0.465-0.468 psi/foot (10.53-10.59 kPa/metre),which is the pressure develped by the salt water that naturally occurs in the formations of this area. See also normal formation pressure.

n: The pressure lower than normal hydrostatic column pressure.

n: 1. the area in which underground pressures begin to change from normal to abnormally high as a well is being deepened. 2. the areas in the drill stem near the point where drill pipe is made up on drill collars.

n: The transition formation from the normal formation pressure to abnomal formation pressure.