Control the wellbore trajectory: the stabilizer mainly plays the role of pointing and righting in the combination of drilling tools, and the position of the stabilizer installation controls the well inclination angle and borehole curvature within the specified range, and also concentrates most of the weight of the drill collar on the drill bit, reducing the non-borehole central force and other external forces borne by the drill string and the drill bit. With the development of stabilizers and the large-scale exploitation of horizontal and directional wells, stabilizers have become an indispensable bottomhole drilling tool in modern wellbore trajectory control technology. Expansion effect: at the curved borehole or borehole retraction, it is drilled together with the drill string, and the chamfer of the transition between the lower end of the body and the working section plays a certain role in expanding the eye. Rest the borehole: In the process of friction contact between the stabilizer and the borehole, there are different degrees of dressing effect on the borehole, which makes the borehole smoother and smoother, and improves the quality of the borehole. [2] function broadcast edit The stabilizing effect of the stabilizer is mainly to reduce the severe radial and axial vibration of the elastic system of the drill pipe string in the hole; Reduced drill bit and drill pipe eccentric grinding; Ensure the quality of coring; Prevent well deviation or manual directional drilling. The structure of the stabilizer is relatively simple, it is a coarse-diameter joint with rib pieces (straight or spiral). The form of its stabilizer can be divided into drill string type and bottom hole type.
Grace Ma
Post time: Feb-05-2025
