دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

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.