دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a phenomenon that sometimes occurs when a well blows out. Rocks, sand, clay, and other debris clog the hole and stop the blowout.

n: The wellbore blinding due to borehole wall sloughing.

n: the collapse of the walls of the wellbore.

n: A severe form of sloughing (See also Sloughing).

n: collapsing of the walls of the wellbore. Also called sloughing.

n: Collapse of the walls of the borehole. Also referred to as sloughing.

n pi: particles that fall off (are sloughed from) the wall of the wellbore. Compare cuttings.

n: The block dropping into the wellbore due to fluctuation of borehole face.

loose formation materials that falls into the wellbore.

collapse of part of the formation into the wellbore during drilling or completions.

n: the factors leading stuck are as follow:(1)the cuttings not being cleared (2).borehole wall sloughing (3) wellbore
leaking (4) key slot or pressure difference

n: a break in the earths crust along which rocks on one side have been displaced (upward, downward, or laterally) relative to those on the other side.

n: Geological term denoting a formation break, upward or downward, in the subsurface strata. Faults can significantly affect the drilling fluid and casing programs due to possibilities for lost circulation, sloughing hole, or kicks.

where rock splits or ruptures with associated movement occurs on either side.

v: to pump drilling fluid into the wellbore while the pipe is being withdrawn to ensure that the wellbore remains full of fluid enen though the pipe is being withdrawn to ensure that the wellbore remains full of fluid even though the pipe is withdrawn. Filing the hole lessens the danger of a kick or caving the wall of the wellbore.

n: pour fluid into the well during hoisting to fill up the wellbore so as to prevent blowing and slough caused by less fluid column pressure

n: the first casing or conductor string (generally with a diameter of 30 to 36 inches-76 to 91 centimetres) set when drilling a well from a floating offshore drilling rig. It prevents sloughing of the ocean-floor formations and is a structural support for the permanent guide base and the blowout preventers.

n: a kind of shale formation and a kind of sloughing formation with low cementation force