دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a walled round hole or well in the hull of a drill ship, ship-shape barge, or semisubmersible drilling rig (usually in the centre) through which the drilling assembly and other assemblies pass while a well is being drilled, completed, or abandoned.

an open shaft in a deep-sea drilling vessel, usually located in the center of the hull, through which the drilling takes place.

n: an estate created by a conveyance absolute in form but intended to secure the performance of some act, such as the payment of money, and to become void if the act is performed in agreement with terms. Compare deed of trust.

n: a hydraulic or pneumatic device usually installed between the travelling block and hook.its function is to keep a more constant weight on the drillbit when drilling from a floating vessel.as the rig heaves up and down,a piston moves within the device to c

n: any device (such as a bumper sub or heave compensator) that serves to maintain constant weight on the bit in spite of vertical motion of a floating offshore drilling rig.

n: a valve operated by power other than manual (i.e., hydraulic, electric, or mechanical).

n: also called power-driven viscosimeter, it refers to a kinds of rotary viscosimeter dirved by motor.

n: a kinds of fishing tool, it is round, openhole at the bottom, inner-open value .it is used to fish the metal debric in the holebore.

n: a single that put into mouse hole. Which is easily to connect with the volume.

n: the semisolid, gel-like masses of water-in-oil emulsions that form from heavier crude oils after a spill. Sometimes called chocolate mousse." The masses may contain up to 80% water and are more viscous than the component oil. Mousse weathers slowly, with the oil retaining its initial toxicity, and may become tar balls that float at or near the sea surface and strand on beaches. The transport of mousse and tar balls can increase the area and duration over which a spill is felt.

thousand standard feet.