دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: A kind of instrument used to measure the well deviation, direction of deflection and tool face orientation continuously and real time.The instrument is made of downhole electron detector,
ground computer,typer and displayer

n: the electronic instrument with microcomputer and accompanying with drilling , able to measure and compute the angle of inclination,angle of orientation,tool face orientation,vertical depth ,horizontal shift and so on with the display and calculation pro

n: in perforating, the distance a jet or bullet must travel in the wellbore before encountering the wall of the hole.

n: The distance between the external surface of a logging tool and the borehole wall. This distance has an important effect on the response of some logging measurements, notably induction and neutron porosity logs.


the clearance from casing to the tool face.

n: the part of a deflection toolusually marked with a scribe line-that is oriented in a particular direction to make a predetermined deflection of the wellbore.

n: The perpendicular plane along the direction of application of kickover tool.

n: The angle between the direction of magnetic north and the direction of tool face is called magnetic tool face orientation;the angle between the direction of high-edge of bore hole and the direction of tool face is called high-edge tool face orientation.

n: The angle from normal north to directional azimuth line along clockwise.

n: The angle between tool face and azimuth line of bore hole.