دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

abbr: circulated;used in drilling reports. circle wrench n: see wheel-type back-off wrench.

n: This method assumes the borehole axis in adjacent measurement station is arc which located in oblique plane. It is a kind of well path computational method.

v: to join metals by utilising the arc created between the welding rod, which serves as an electrode, and a metal object. The arc is a discharge of electric current across an air gap. The high temperature generated by the arc melts both the electrode and the metal, which fuse.

n: a welding technique for joining pipe ends. Two general types of automatic welding used in pipeline construction are submerged-arc welding and automatic wire welding.

n: 1. in directional drilling, the direction of the wellbore or of the face of a deflection tool in degrees (0-359") clockwise from true north. 2. an arc of the horizon measured between a fixed point (such as true north) and the vertical circle passing through the centre of an object.

n: Reflecting the direction of wellbore deflection.

n:1. intentional deviation of a wellbore from the vertical. Although well bores are normally drilled vertically, it is sometimes necessary or advantageous to drill at an angle from the vertical. Controlled directional drilling makes it possible to reach subsurface areas laterally remote from the point where the bit enters the earth. It often involves the use of deflection tools. 2. a technique of river crossing in pipeline construction in which the pipe is buried under the riverbed at very much greater than those of conventional crossings. With this technique, a hole in the form of an inverted arc is drilled beneath the river, and the made-up pipeline is pulled through it.

n: The intentional deviation of a wellbore in order to reach an objective some distance from the rig.

drilling the wellbore in a planned angle of deviation or trajectory.

n: a kind of drilling method in which the rock is melted and evaporated by the power arc generated between the electrode and rock

n: the assembly mounted on a coiled tubing injector head that guides the tubing string as it passes through an arc from the reel into a vertical alignment with the injector-head chains and wellbore. The radius of the guide arch is generally designed to be as

n: the arc or portion of the earths equator intersected between the meridian of a given place and the prime meridian (at Greenwich, England) and expressed either in degrees or in time.