Kinematics of Large-Diameter Multiple Rolling-Cutter Rock Drilling Bits Under the Conditions of Reactive Turbo-Drilling
Special features of the kinematics of large-diameter multiple rolling-cutter rock drilling bits under the conditions of reactive turbo-drilling are considered. An analysis of the kinematics of the rolling cutters of drilling bits functioning with slippage of the cutting structures along the well bottom is undertaken. Factors that influence the magnitude and direction of slippage of the teeth of the cutting structures along the well bottom are determined. Shortcomings of the geometry of the cutting structures of rolling-cutter drilling bits designed for full-diameter drilling when used in reactive turbo-drilling units are identified. On the basis of these studies, it is concluded that fabrication of drilling bits of increased diameter with the use of sections of standard box-type drills is not an efficient approach for full-diameter drilling, since the geometry of the cutting structures of conventional drilling bits does not take into account the specific features that arise in the interaction of the teeth of the cutting structures with the well bottom surface under the conditions of reactive turbo-drilling.
Keywordsreactive turbo-drilling rolling-cutter drilling bit instantaneous rotational speed
- 1.“Reactive turbo-drilling,” Tr. VNIIBT, Iss. 18, Nedra, Moscow (1967).Google Scholar
- 2.D. Yu. Serikov, “Six-rolling cutter drilling bits of large diameter with solid alloy cutting structures for use in reactive turbo-drilling,” Territ. NEFTEGAZ, No. 4, 20–23 (2016).Google Scholar
- 3.R. M. Bogomolov, N. V. Nosov, S. M. Krylov, and V. I. Kremlev, Improving the Technology of Processing and Assembling Rolling Cutter Drilling Bits, Mashinostroenie, Moscow (2013).Google Scholar
- 4.Yu. G. Burimov, A. S. Kopylov, and A. V. Orlov, Drilling in the Upper Intervals of Deep Large-Diameter Wells, Nedra, Moscow (1975).Google Scholar