Тип публикации: статья из журнала
Год издания: 2020
Идентификатор DOI: 10.18799/24131830/2020/1/2455
Ключевые слова: Destruction, Drilling, Eccentricity, Experiment, Productivity, Recess per one revolution, Rock
Аннотация: The relevance of the research is caused by the need to find the ways to increase the maximum depth of well drilling by the rotarypercussion method and its productivity. The main aim of the research is to establish the fact of growth of rotary-percussion drilling productivity through rising the mechanical speed of drilling while increasing the impact application eccentricity; determine the basic dependencies of the mechanical drilling speed and recess per one revolution as responses of the drilling system on the values of axial load, rotation frequency and eccentricity of impact application pulses; justify the expansion of the range of effective destruction of plastic rocks. Objects: mechanism of rock destruction by eccentric impact pulses. Methods: formulation and description of the experiment on rock destruction by eccentric impact pulses using the high-frequency hydrohammer HV-6 as a generator of eccentric impact pulses; measurement of empirical data obtained during the experiment; statistical processing of the obtained experimental data to establish the average values of the system responses; processing the data obtained by the method of a full factorial experiment, finding mathematical models of the mechanical drilling speed and recess per one revolution, depending on the values of the axial load and rotational speed and their graphical interpretation; analysis of the data obtained by empirical methods, formation of the main conclusions on the results of the study. Results. The authors have established the fact of increasing the productivity of the rotary-percussion drilling by determining the fact of mechanical drilling speed growth with rising eccentricity of the impact application in the range of 0-2 millimeters. The main dependences of the mechanical drilling speed and recess per one revolution on the values of axial load, rotation frequency and eccentricity of application of impact pulses were established. © 2020 Tomsk Polytechnic University, Publishing House. All rights reserved.
Журнал: Bulletin of the Tomsk Polytechnic University, Geo Assets Engineering
Выпуск журнала: Vol. 331, Is. 1
Номера страниц: 135-147
ISSN журнала: 25001019
Издатель: Tomsk Polytechnic University, Publishing House
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