دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the kill method that the density of drilling fluid volume actually above the needed density of kill fluid.

n: the pressure that overburden rock quality enforces the given depth layer is devided by the vertical depth of the layer.

n: the stress that the pressure of given layer bears overburden rock quality causes the base and the fluid in the pores is devided by the vertical depth of the layer.

n: the amount by which the actual volume that has passed through the meter exceeds the indicated volume registered by a meter. See absolute error:

n: the effluent of a cone-shaped centrifuge that passes up the inside of the cone and leaves through the vortex finder.

n: 1 the volume of fluid return from the mouth above the pump input , the phenomenonof fluid automatic flowing out. 2. the fluid derived from the overflow pipe of whirling current separator.

n: a pipe installed at the top of a tank to enable the liquid within it to be discharged to another vessel when the tank is filled to capacity.

n: the vapour stream leaving the top of a tower, column, or vessel.

over production, beyond the allotment or contract volume, that must be accounted for in a contract.

n: the amount by which the indicated volume registered by a meter exceeds the actual volume that has passed through the meter. Determined by means of a suitable standard device. Compare underregistration.

n: a fishing tool that is attached to tubing or drill pipe and lowered over the outside wall of pipe or sucker rods lost or stuck in the wellbore. A friction de- vice in the overshot, usually either a basket or a spiral grapple, firmly grips the pipe, allowing the fish to be pulled from the hole.

n: a fishing tool that is attached to the drill pipe and is lowered over the fish and engages externally. An overshot can also be used to recover a wireline survey tool (single shot).

a fishing tool designed to slip over the fish and grasp the outside.