دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: (STCW) a standard that resulted from an International Maritime Organization (IMO) Conference in 1978 to establish minimum professional standards for those who work at sea.

v: The operation that setting upbright the screw off tripple and collar in the pipe setback when tripping out .

n: a fixed ball-and-seat valve at the lower end of the working barrel of a sucker rod pump. The standing valve and its cage do not move, as does the traveling valve. Compare traveling valve.

the fixed position valve at the bottom of a beam lift pump.

n: in perforating, the distance a jet or bullet must travel in the wellbore before encountering the wall of the hole.

n: The distance between the external surface of a logging tool and the borehole wall. This distance has an important effect on the response of some logging measurements, notably induction and neutron porosity logs.


the clearance from casing to the tool face.

n: difficulty in obtaining proper penetration with a tubing perforating gun in casing due to the casing guns lying against one side of the casing because of hole deviation.

n: a vertical pipe rising along the side of the derrick or mast, which joins the discharge line leading from the mud pump to the rotary hose and through which mud is pumped into the hole.

n: A rigid metal conduit that provides the high-pressure pathway for drilling mud to travel approximately one-third of the way up the derrick, where it connects to a flexible high-pressure hose (kelly hose). Many large rigs are fitted with dual standpipes so

the pipe in the derrick that delivers mud to the kelly hose.

n: a complex carbohydrate sometimes added to drilling fluids to reduce filtration loss.

n: A drilling-mud additive used to control fluid loss in water muds ranging from freshwater to saturated-salt to high-pH lime muds.

n: All kinds of starch additives by modified process to starch .

n: in meter proving, when the opening and closing meter readings of the test run are determined at no-flow conditions. Compare running start-and-stop method.