دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a metal strip inserted into a system to monitor corrosion rate and to indicate corrosion inhibitor effectiveness. corrosion fatigue n: metal fatigue concentrated in corrosion pits. See fatigue.

a representative piece of metal cut to a specific size and shape that is immersed in a test bath of placed in the flow stream to enable an estimation of the active corrosion occurring in a given set of conditions.

n: drill pipe run in a well in a definite position, often a requisite in directional drilling.

n: according to the demand of oriented drilling, the pipe can oriented trip in to the bottom.

n: The full time from trip out to trip in for changing bit or logging .

n: the rapid turning of the drill stem when one length of pipe is being joined to another.

n: After aimming at thread when trip in ,then banding manilla rope or iron chain on join and calling on cathead to screw on thread.

v: to pull off during a trip into or out of the hole because of pressure differential. For example, if a packer is run in too quickly, the pressure differential across the packer swabs off the packing elements, making it necessary to trip back out to replace them.

n: Casing string be trip in the wellbore that its diameter smaller than the diameter of bit,then the casing string cannt trip in or pick up readily.

trip in hole.

n: The slight gas of wellbore come from layer when trip in .

gas that enters the wellbore during a trip of the drilling string. May be due to swabbing and/or lowering the mud equivalent circulating density during pump shutdowns.

v: to go in the hole.

n: To run drillstring back in the hole.

run in the hole with tubing or drill pipe.

n: The phenomenon of finding slight oil and gas in the returns when trip in.