دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the volume of oil delivered to a pipeline in a complete cycle of a measuring tank in a LACT installation. A series of such dumps covered by a single scheduling ticket is called a run.

n: a bailing device with a release valve. usually of the disk or flapper type. used to place. or spot, material (such as cement slurry) at the bottom of the well. dump meter n: a liquid-measuring device consisting of a small tank with narrowed sections at top and bottom that automatically fills and empties itself and records the number of dumps.

a hollow tube with a flapper or other opening valve at the bottom, run on wireline to place cement or sand in a well.

n: a calibrated metering tank designed to release a specific volume of liquid automatically. Also called a measuring tank.

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

a deposit of sand produced by wind or running water. The dune may be massive, but usually lower energy and permeability varies.

direct crossover valve.

n: the trade name for a directional drilling tool that deflects the drilling assembly off vertical without having to be pulled from the hole. The device that causes the tool to be deflected can be caught and retrieved with a wireline.

n: the vertical loading caused by the speed changement of thd drilling pipe during tripping

n: the flowing pressure of slurry when it cycles in the well,and the pressure is in connection with the density,plastic viscosity,shearing force and flow velocity of the slurry

n: a sophisticated monitoring system for laying pipe offshore. It is used to control pipe release off a stinger. This system compensates immediately for horizontal and vertical wave motion by either paying out the pipe string or hauling it back. Dynamic tensioning maintains a constant level of tension on the pipe and prevents excessive stress on the line.