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.

n: metal fatigue concentrated by surface imperfection, either mechanical (such as a notch) or metallurgical (such as a defect in the metal itself).

n: the metal fatigue intesify on the metal surface that caused by the mechanical reason or smelting reason.

abbr: oil and salt water;used in drilling reports.

n: slip at an angle between the dip and the strike in a fault plane.

n: also called piezometric well. The well that drill for the purpose of observing the effection of pumping gas or water and mastering the pressure alternation of oil or gas reservior.



a well with primary purpose of monitoring fluid movement or other reservoir function.

n: (OSH Act) a congressional act passed to assure so far as possible every working man and woman in the nation safe and healthful working conditions and to preserve our human resources." The OSH Act establishes the Occupational Safety and Health Administration as a federal agency and authorises it to promulgate, modify, or revoke occupational safety and health standards.

n: (OSHA) a US government agency that conducts research into the causes of occupational diseases and accidents. It is responsible for administration of the certification of respiratory safety equipment. Address: Department of Labour;200 Constitution Avenue, NW;Washington, DC 20210;(202) 219-8148.

n: (OCSIP) an MMS program that generates reports and documents to assist state and local officials in planning for potential impacts resulting from offshore oil and gas exploration, development, and production activities.

n: a type of chain alignment in which the ends of the shafts, and therefore the sprockets, are not in line with each other. Some sprockets can slide on the shaft, so it is possible for them to be misalign even if the shafts are not. Offset misalignment alternately stresses the link plates on one side of the chain and then those on the other side. Compare angular misalignment.