دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

v: to place a special mixture of clay and oil, or other materials, at a specific point in the wellbore. The size of the pill is usually several barrels. For example, a rig crew may spot a 20-barrel (3,180-litre) pill of bentonite clay and diesel oil at or near a formation into which drilling mud is escaping. By lowering the driI1 stem to the desired depth, the pill is slowly pumped down the stem and into the annulus. If all goes well, the pill will migrate into the formation taking the driI1ing mud and plug it closed.

n: the buying and selling of crude oil in a commodities exchange market on a daily basis, just as other commodities, such as gold, wheat, and heating oil, are bought and sold.

a market for short term transactions of specific volumes of product without a long term commitment.

n: generally a short-term sale on an interruptible or best efforts basis, usually for one month.

n: in tank sampling, a sample obtained at some specific location in the tank by means of a thief, a bottle, or a beaker.

n: the pumping of a substance such as oil into an interval in the well. See spot.

n: A small volume or pill of fluid placed in a wellbore annulus to free differentially stuck pipe.


placing fluid at a specific place in the wellbore.

n: Immersing oil or diesel oil at known stuck hole section in well,making stucked drill pipe be lubricated and loose then free the drill pipe.