THE FORCES GENERATED WHEN DRILLING BITS ARE APPLIED VERTICALLY AND OBLIQUELY: ANALYTICAL ANALYSIS AND INFLUENCE ON NORMAL OPERATION AT ANGLES OF 15° AND 30° INCLINATION
Keywords:
Drill bit, oblique well, axle load (WOB), side force, normal force, frictional force, 15° inclination, 30° inclination, force analysis, circle dynamics, torque.Abstract
In this article the system of forces generated by operation of drilling bits at angles of vertical (0°), 15° and 30° inclinations of mining enterprises is analyzed. A mathematical model of the axle load (WOB), side force (Side Force), frictional force and the oblique angle of normal force was developed on the basis of a trigonometric approach and their effect on the normal operation of the bullet was determined. The results of the study show that slope angles from 15° to 30° reduce the axle load by 3.4-13.4%, and increase the side force by 25.9-50%. This condition significantly changes the drilling velocity, drill speed, and stabilizer load. The article provides recommendations based on modern Scopus index scientific sources.
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