دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the crew member who handles the upper end of the drill string as it is being hoisted out of or lowered into the hole. On a drilling rig, he or she is also responsible for the circulating machinery and the conditioning of the drilling or workover fluid.

n: a drilling or workover fluid in which oil is the continuous phase and which contains from less than 2 percent and up to 5 percent water. This water is spread out, or dispersed, in the oil as small droplets. See invert emulsion mud. oil mud.

n: A kind of oil soluble substance,which usually used as filtrate reducer of completion fluid and workover fluid.

products that increase the temperature stability of a material, usually a drilling or workover fluid above its normal expected range.

n: a relatively small volume of water that is put into the drill string or tubing string on top of the drilling or workover fluid.

removal of solids, completion fluid, sand workover fluids by production.

n: a special drilling mud used to keep a well under control while it is being worked over. A workover fluid is compounded carefully so that it will not cause formation damage.