ABSTRACT
This paper presents the study of the mechanism of well deepening in diamond drilling. Destruction of rocks under diamond drilling is represented by a set of deformation processes arising in rocks when destroying efforts are applied. Modern requirements to the technology and economic feasibility of drilling operations suggest continuous improvement in the field of the mechanism of bottom rock breaking. The article proposes a procedure to analyze situations at well bottom drilling deeper per a revolution of the diamond rock cutting tool. On the basis of the proposed procedure the authors analyze and operating influences to preserve the set and optimum deepening per a revolution are revealed under effective destruction of firm rocks. The estimation method of stress-strain state of rocks to be drilled and the choice of the maximum axial load in diamond drilling of rocks with different physical and mechanical properties.
