دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the pattern of minute projections from a metal surface produced by sandblasting, shot blasting, or chemical etching to enhance the adhesiveness of surface coatings.

n: a boring tool that consists of a shaft with spiral channels. An auger may be used to bore the hole for a pipeline that must cross beneath a roadbed.

a long thin sandbar parallel to shore formed by wave action.

n: term used to refer to a pipeline when other pipe, called casing, is used with it in crossing under roadbeds and railroad rights-of-way. See casing.

dump bailer.

double block and bleed.

drive down bailer.

drilling, recompletion and repair data base.

n: the valve through which oil and water are discharged from separators. treaters. and so on. It is usually a motor valve. but may be a liquid-level controller as well. dunefield n: an accumulation of windbome sand on that part of the seashore that lies above storm-flood level.

n: the window slide valve installed on the top of the screwdrill
which closes when trun on the pump and open when stop the pump

enhanced vertical tree, dual bore.