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: 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.

n: The method assuming that borehole axis of two adjoining measured points is a polygonal line. The length of one part of polygonal line is equal to another part. The deviation angle and azimuth of upper part is same with upper measured point and the deviati

n: Borehole axis deflect vertical line. Deviation angle and azimuth can be measured by inclinometer.

n: The trajectory of borehole axis.

n: The well whose hole axis presents bent shape. The deviation angle and azimuth change violently.

n: Controlling the deviation angle and azimuth of wellbore according to borehole axis in directional drilling.

n: the tools which can make the bit deviate the drilled hole axis when they rotate in the well ,such as unbalanced drill collar,three-cone bit that lacks a cone

n: the centre line of wellbore

n: the included angle between hole axis and vertical line