دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a bent sub which can slope at two directions ,connected between the bit and the dynamic drill tool

n: a kind of joint whose inner bits of the double-tube guide sub are connected together

the direction going down the tilt angle of the formation.

n: the wall of a fault that has moved relatively downward.

diaminopropanoltetraacetic acid, a calcium scale remover and solvent.

n: 1. an excess of draft at the stem of a ship or drill ship, as compared to the bow.2.friction between a moving device (such as a bit) and another moving or nonmoving part (such as the formation). 3. the bending of rock strata adjacent to a fault.

n: The extra force required to move the drill string owing to the drill strings being in contact with the wall of the borehole.

n: the annular belt driven by gyro wheel in the solids control device

n: refer to drill string failture

n: the filtration unit installed in the first drill pipe of the kelly
to prevent the filth jaming the channal of the turbine

n: the amount of pressure exerted inside the drill pipe as a result of circulating pressure, entry of formation pressure into the well, or both.