دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: 1. an accurately calibrated, usually U-shaped, pipe used to check, or prove, the accuracy of a meter on a LACT unit or other oil measuring installation. 2. a type of continuous-flow volumetric prover comprising a length of pipe from which a known volume is displaced by a displacer to or from a meter being proved at normal operating conditions.

n: when drilling, if not increasing the fluid artifically , the surface of mud pool would rise, it is often overflow happened..

v: to place cement in or near the bottom of a well to exclude bottom water, to sidetrack, or to produce from a fonna- tion higher in the well. Plugging back can also be accomplished with a mechanical plug set by wireline, tubing, or drill pipe.

n/v: 1 the cement at the bottom of well isolates basal water,. 2 pumping cement at certain depth to side track. 3 sealed off the exhausted reservior underneath , recovery exploring the
top reservior.

to set a plug (usually permanent) in a wellbore, giving a new bottom.

n: a fluid moving as a unit in which all shear stress occurs at the pipe wall and hole wall. The stream thus assumes the shape of several telescopic layers of fluid with lowest velocities near the pipe and hole walls and the fastest in the middle.

n: the movement of a meterial as a unit without shearing within the mass. Plug flow is the first type of flow exhibited by a plastic fluid after overcoming the initial force required to produce flow.

fluid moves as a unit.

n: an increase in the effective stroke length of the plunger of a sucker rod pump caused by the elongation of the rod string due to the dynamic loads imposed by the pumping cycle.

magna extruded into overlying rock that is not exposed to atmospheric conditions during cooling.

n: a reciprocal pumping unit in which one or more power cylinders are placed over the wellhead and a counterbalance system using compressed air or gas is provided. On the upstroke, high-pressure gas is applied to the underside of the pistons of the inside power cylinders, and low-pressure gas above the pistons is exhausted to the sales line. On the downstroke, high-pressure gas is applied to the top of the pistons, and the low-pressure gas below the pistons is exhausted to the sales line.

As a rock is compressed axially, the ratio of longitudinal compressive strain to the transverse extension strain (length change over width change). Always between the range of 0 to 0.5.