دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: The drill string or tubing string used to clean the wellbore.

n: The operation of circulating drill fluid when running in hole in order to clean wellbore or borehole face.

testing the well into a chamber open at the bottom, but closed at the surface. Fluid entering the wellbore is equal to the fluid production minus the gas volume charge. A material balance approach.

n: a continuous string of flexible steel tubing, often hundreds or thousands of feet long, that is wound onto a reel, often dozens of feet in diameter. The reel is an integral part of the coiled tubing unit, which consists of several devices that ensure the tubing can be safely and efficiently inserted into the well from the surface. Because tubing can be lowered into a well without having to make up joints of tubing, running coiled tubing into the well is faster and less expensive than running conventional tubing. Rapid advances in the use of coiled tubing make it a popular way in which to run tubing into and out of a well. Also called reeled tubing.

n: (1)A long, continuous length of pipe wound on a spool. The pipe is straightened prior to pushing into a wellbore, and is recoiled to spool the pipe back onto the transport and storage spool. (2)A generic term relating to the use of a coiled tubing techniq

a continuous reeled tube from 1” diameter to >3.5” diameter. The tubing is injected into a well via a coiled tubing unit (CTU) and can be used to unload wells with liquid, foams or gasses, logging, fracturing, etc.

n: A kind of fishing tool by chucking the neck of junk in the wellbore when fishing.

when the drill bit in a new-drill well contacts an existing wellbore.

n: a combination of two or more natural energies that work together in a reservoir to force fluids into a wellbore. Possible combinations include gas-cap and water drive, solution gas and water drive, and gas-cap drive and gravity drainage.

v: to pull the drill stem out of the wellbore to change the bit, to change from a core barrel to the bit, to run electric logs, to prepare for a drill stem test, to run casing, and so on. Also called trip out.

n: See trip.

the pay zone exposed to the wellbore. This may or may not be the entire pay.

a relative permeability effect where condensate, usually hydrocarbon, drops out of the vapor phase around the wellbore when the pressure drops below the dew point in response to drawdown or depletion. Gas rates can be severely reduced by the permeability