دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a workover performed with wireline lowered into the well through the tubing string. A lubricator is rigged up over the wellhead and wireline tools are inserted through the lubricator under pressure. A variety of wireline tools is available.

n: movement between the mating surfaces of box and pin in a tool joint. v: to move in a rocking motion.

lock ring that anchors the gas lift valve in the side pocket mandrel.

v: to perform one or more of a variety of remedial operations on a producing oilwell to try to increase production. Examples of workover operations are deepening, plugging back, pulling and resetting liners, and squeeze cementing.

n: the outer shell of a downhole plunger pump. The pumping cycle starts with an upward stroke of the rods, which pulls the plunger up through the working barrel. On the upstroke, the traveling valve closes, the standing valve in the working barrel opens, fluid above the traveling valve is lifted out of the well, and a new charge is drawn into the pump. On the downstroke, the traveling valve opens, the standing valve closes, and the fluid is forced from the working barrel through the traveling valve in the plunger and into the tubing. Repeated strokes bring the fluid to the surface.

n: the volume of gas in an underground storage reservoir above the designed level of the base. It mayor may not be completely withdrawn during any particular withdrawal season.

n: a standard that is calibrated against a reference standard and is intended to verify working measuring instruments of lower accuracy. Compare primary standard, secondary standard.

n: the performance of one or more of a variety of remedial operations on a producing oilwell to try to increase production. Examples of workover jobs are deepening, plugging back, pulling and resetting liners, and squeeze cementing.

The process of performing major maintenance or remedial treatments on an oil or gas well. In many cases, workover implies the removal and replacement of the production tubing string after the well has been killed and a workover rig has been placed on loca

repairing a well. Usually implies opening the well and running in with a tubing string. May or may not involve killing the well and may or may not involve a conventional rig.

n: the worst possible spill from a vessel or facility. Such a spill is determined by the maximum amount of discharge possible from the facility, or the total release of a full cargo from the firms largest vessel, in the worst weather conditions.