دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a well completion in which a liner is used to obtain communication between the reservoir and the wellbore.

n: the completion method, fistly down the oil tubing to the top of working layer and make a completion, then drill open working layer,finally down the preliminary
liner with a hole to the oil layer.

when gas is slipping by the liquids, emptying only a part of the liquids in the well and leaving a portion of the liquid in the wellbore.

leak off point. The departure from the straight line of a limit test on a wellbore. Usually from at leakoff test after casing is set and before drilling ahead.

a high permeability zone that takes fluids from the wellbore and the conventional filter cake building materials have no effect on fluid losses.

n: A mud additive for lowering torque (rotary friction) and drag (axial friction) in the wellbore and to lubricate bit bearings if not sealed. Lubricants may be solids, such as plastic beads, glass beads, nut hulls and graphite, or liquids, such as oils, syn

n: a device used to determine the direction and drift angle of a deviated wellbore. It uses a magnetic compass to measure magnetic direction, which differs from true direction by the amount of local declination.

n: the apparatus that measures drift azimuth and deviation angle.

motherbore or main wellbore from which a lateral bore is drilled.

v: to attach a joint of drill pipe onto the drill stem suspended in the well bore to permit deepening the wellbore by the length of the joint (usually about 30 feet, or 9 metres).

n: the procedure that add the single to the volume and make the volume extension.

v: to hoist the drill stem out of the wellbore to perform one of a number of operations, such as changing bits or taking a core, and so forth, and then to return the drill stem to the well bore.

the round trip of pulling the drill string from a well and returning it to bottom. Usually done to change or check the bit or to change the BHA.

an adaptive drilling process used to precisely control the annular pressure profile throughout the wellbore (IADC definition).