دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: see riser angle indicator.

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.

in a horizontal plane, it is the angle (measured clockwise) of well path departure usually from true or magnetic north. It may also be expressed as the compass direction of the path of the well bore as measured by a borehole survey. (Note: check the speci

n: A factor reflecting wellbore deflection. It is defined as the included angle between the north and the projection of tan of survey point in the level.

n: see riser angle indicator.

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: Usually refers to the operation that ogging device measures deviation angle and azimuth. There are two types: single-shot survey and multimetering.

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

n: The component of a survey instrument used to measure azimuth.

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