دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: pollution that crosses political or governmental or geographical boundaries.

n: the movement of molecules. transmission n: the gear or chain arrangement by which power is transmitted from the prime mover to the drawworks, the mud pump, or the rotary table of a drilling rig.

n: a body of permeable oil-bearing rock surrounded or overlain by an impermeable barrier that prevents oil from escaping. The types of traps are structural, stratigraphic, or a combination of these.

n: A configuration of rocks suitable for containing hydrocarbons and sealed by a relatively impermeable formation through which hydrocarbons will not migrate. Traps are described as structural traps (in deformed strata such as folds and faults) or stratigrap

a blind flange over a valve at the top of the tree.

an indefinite term normally used to identify a producing formation over a large area of production.

n: a correction applied to cargo ullages when the vessel is not on an even keel. Valid only when liquid completely covers the tank bottom and is not in contact with the underside of the deck.

n: the operation of hoisting the drill stem from and returning it to the wellbore. v: shortened form of make a trip." See make a trip, overspeed governor.

n: The complete operation of removing the drillstring from the wellbore and running it back in the hole. This operation is typically undertaken when the bit becomes dull or broken, and no longer drills the rock efficiently.


pulling all pipe from the well and rerunning the pipe to bottom.

n: the small amount of additional mud weight carried over that needed to balance formation pressure to overcome the pressure-reduction effects caused by swabbing when a trip out of the hole is made.

any mud density over the amount needed to balance the formation with a static mud column. Related to overbalance.

n: a device with three extensions (legs) that is suspended over a manway or other vertical access into a space. It supports hoisting gear and cables used to pull a person from a confined space.

n: a well-servicing and workover rig that is mounted on a truck chassis.

n: The self-migratory rig that be fixed main linkwork of drilling work.