ІRSTІ 52.13.07                                                                                       №4 (2019г.)

Mendebaev T.N., Smashov N.Zh.

The problems of diamond drilling in deep wells are the preservation of a given direction, the energy costs growing with depth and obtaining informative geological core material. This is due to the complication of the working conditions, namely the tool on the face, the properties of rocks, and especially fracturing. The analysis of information sources indicates that the solution of problems is possible by attracting new resources, physical effects, investing them in the structural scheme of tools, revising the manufacturing technology. A scheme was created with the hydrodynamic effect of the destruction of rocks by a directed jet of working fluid, an increase in the intensity of sludge removal, providing favorable bottomhole
working conditions of the tool, thereby the integrity of the core, the source of information. A technology has been developed for making tools based on a phased implementation of the operation – vacuum filtration of diamonds with cold pressing and hot pressing. According to the experimental data, in comparable conditions, the prototypes of the instruments have similar performance indicators with serial NQ crowns, with significantly lower values of axial load and rotation frequency, the main causes of the curvature of the wells and the increase in energy costs.
Keywords: drilling, well drilling, diamond tool, drilling scheme, drilling technology.