Известия Томского политехнического университета: Инжиниринг георесурсов (Feb 2022)

ALGORITHM OF DIAMOND DRILLING SYSTEM CONTROL

  • Vyacheslav V. Neskoromnykh,
  • Marina S. Popova,
  • Zakhar G. Zotov,
  • Liu Baochang

DOI
https://doi.org/10.18799/24131830/2022/2/3562
Journal volume & issue
Vol. 333, no. 2
pp. 81 – 89

Abstract

Read online

The relevance. Diamond drilling is characterized by high rotational speed of the tool at great depths. Such conditions of rock destruction require special control of drilling parameters and their correction. All drilling parameters are interrelated. To achieve the most efficient operation of a diamond rock cutting tool, an optimal mechanism for its operation is required. Analysis of the situation and selection of the required parameters of the drilling mode with diamond tools is the laborious work. This must be done continuously online. The urgent task is the development of the automated control system for diamond drilling in order to rationalize the use of diamond tools. This is possible with the use of modern computer programming technologies. Software algorithm must take into account all the requirements for optimizing the interdependent drilling parameters. The main aim of the research is to develop a control algorithm for a diamond drilling system for its further implementation into software. Objects: diamond drilling, technical and economic indicators of drilling and parameters affecting the results of drilling. Methods: analytical method, full factorial experiment method, modeling method. Results. The main parameters affecting the results of drilling operations are ROP, tool life and power spent on rock destruction. The deepening per revolution as an optimality criterion makes it possible to ensure an acceptable drilling speed and low power consumption while maintaining a high resource of the tool. The control process for diamond drilling consists in analyzing the change at a specific point in time in ROP and power. After the analysis, a decision is made to correct the value of the speed and axial load. A control algorithm for the diamond drilling system was developed. The algorithm can be implemented in an accessible programming language.

Keywords