دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a type of portable service or workover rig that is self-propelled, using power from the hoisting engines. The drivers cab and steering wheel are mounted on the same end as the mast support;thus the unit can be driven straight ahead to reach the wellhead. See carrier rig.

n: the solid adsorption materials such as molecular sieves, charcoal, or other materials used for purifying or for recovering liquid from a gas. See adsorption.

n: 1. gas whose water content has been reduced by a dehydration process. 2.gas containing few or no hydrocarbons commercially recoverable as liquid product. Also called lean gas.

n: a type of open tank prover that has a gauge glass on the neck of the prover but not on the bottom of the prover. Compare wet-bottom prover.

a wireline or tubing run into a well with a dummy piece of equipment of the same size, shape and stiffness of a valuable or unrecoverable piece of equipment to make sure the equipment can be placed.

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.

direct crossover valve.

n: a condition in which several processes act simultaneously to maintain a system in an overall state that does not change with time.

events such pressure surge or fracturing that occur over a few hundred milliseconds.

n: a method by which a floating offshore drilling rig is maintained in position over an offshore well location without the use of mooring anchors. Generally, several propulsion units, called thrusters, are located on the hulls of the structure and are actuated by a sensing system. A computer to which the system feeds signals directs the thrusters to maintain the rig on location.

n: A method by which a floating drilling rig or drill ship is kept on location. A control system of sensors and thrusters is required.