دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a condition in which the drill stem becomes stuck against the wall of the wellbore because part of the drill stem (usually the drill collars) has become embedded in the filter cake. Necessary conditions for differential-pressure sticking, or wall sticking, are a permeable formation and a pressure differential across a nearly impermeable filter cake and drill stem. Also called wall sticking. See differential pressure, filter cake.

n: One of the mechanisms causing stuck pipe by having excessive mud weight.

a common method of pipe sticking where the overbalance pressure in the wellbore pushes the tubing against the side of the wellbore in a permeable formation.

n: a tool to cut drill pipe stuck in the hole. Tools that cut the pipe either internally or externally, permitting some of it to be withdrawn, are available. Jet cutoff or chemical cutoff is also used to free stuck pipe.

n: a mechanical cutting tool that can cut the stuck pipe in or out of the pipe

see Free Point Constant. Used in stuck pipe depth calculations.

n: an area or point above the point at which a tubular, such as drill pipe, is stuck in the wellbore.

n: the depth at which pipe is struck, or more specifically the depth immediately above the point at which pipe is stuck.

a technique for estimating the highest free point in a string of stuck pipe. It is based on a differential stretch calculation with amount of pull and the free point constant (FPC).

a calculation used in the stuck pipe calculation to correct for pipe wall thickness and diameter.

n: A wireline tool used to determine the free point on a stuck string. The free-point indicator operates by detecting stretch in the tubular when tension is applied at surface. If stretch is not detected, the string must be stuck above the tool;if stretch i

a tool with strain gauges that is run on wireline and moved along the stuck pipe with successive pipe pulls until the stuck point is located.

n: a device run on wireline into the wellbore and inside the fishing string and fish to locate the area where a fish is stuck. When the drill string is pulled and turned, the electromagnetic fields of free pipe and stuck pipe differ. The freepoint indicator is able to distinguish these differences, which are registered on a metering device at the surface.

n: refer to frozen stuck pipe.

n: refer to frozen stuck pipe.

n: pipe or column which can not move down and up and turn because wellbore fall scraps amassed around pipe or other reasons.