دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: A kind of deflecting tool for drilling directional well.

n: A kind of automatic document generating system designed for user retrieving abundant data about drilling and direction well, developed by American Eastman Whipstock.

n: The arching, acclive and cavernous surface of whipstock.

n: See whipstock.

n: departure of the wellbore from the vertical, measured by the horizontal distance from the rotary table to the target. The amount of deviation is a function of the drift angle and hole depth. The term is sometimes used to indicate the angle from which a bit has deviated from the vertical during drilling. See drift angle.

n: The angle at which a wellbore diverges from vertical. Wells can deviate from vertical because of the dips in the beds being drilled through. Wells can also be deliberately deviated by the use of a whipstock or other steering mechanism. Wells are often dev

n: drilling more 3m small hole when drill out the whipstock

n: a larger of tank whipstock.

n: the primary angle built tool.

n: a bit especially designed for use in drilling a hole around an obstruction in the main borehole. Usually, a cement plug is set on top of the obstruction, the side tracking bit is run into the hole on a whipstock or other directional drilling device, and the new borehole begun. Because the new borehole goes off to the side of the plugged borehole, the operation is called side tracking.

v: to use a whipstock, turbodrill, or other mud motor to drill around broken drill pipe or casing that has become lodged permanently in the hole.

v: Binder GG, Carlton LA and Garrett RL: Evaluating Barite as a Source of Soluble Carbonate and Sulfide Contamination in Drilling Fluids, Journal of Petroleum Technology 33, no. 12 (December 1981): 2371-2376.

a second (or higher) attempt to drill a wellbore after the first wellbore has been junked. This saves re-drilling the top part of the hole but requires drop back to a smaller wellbore size in the sidetrack. Also can be a second wellbore.