دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: see drift angle.

n: The angle between the tangent of borehole axis and vertical line, measured by inclinometer.

n: see drift angle.

n: See angle of deviation.

n: the tendency of the bit to move other than vertically, caused by an interaction between the rotation of the bit and the varying resistance of the formation being drilled.

a flat bottom, short steel tool run on wireline to tag the surface of water or solids in the well. It is nearly the drift diameter of the tubular.

n: The rate at which drift angle is increasing as the wellbore is being deviated from vertical. Usually measured in degrees per 100 ft drilled.

n: That part of the wellbores trajectory where the drift angle is increasing.

n: A BHA specially designed to increase drift angle.

n: according to a theory proposed by Alfred Wegener, a German meteorologist, in 1910, the migration of continents across the ocean floor like rafts drifting at sea. Compare plate tectonics.