دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

v: to pull on pipe with enough force to exceed the pipes weight.

n: pull on pipe over and beyond its weight in either air or fluid.

the load applied when pulling equipment that is in excess of the actual string weight.

adj. when applied to metering, indicates that the maximum permitted flow of the meter is being exceeded.

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: an interest carved out of the lessees working interest. It entitles its owner to a fraction of production free of any production or operating expense, but not free of production or severance tax levied on production. An overriding royalty may be created by grant or by reservation. Commonly, an override is reserved by the assignor in a farmout agreement or other assignment. An overrides duration corresponds to that of the lease from which it was created.

a royalty interest that may be retained by a third party as payment or investment. This interest normally bears no part of the drilling and completion expenses of the well.

n: 1. a special clutch that permits a rotating member to turn freely under certain conditions but not under others. 2. a clutch that is used in a starter and transmits cranking effort but overruns freely when the engine tries to drive the starter.

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.

n: see bull-dog slip socket.

n: the fishing socket that chippered three claws inword on its slight tube wall .