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Analysis of the performance of the removable diamond tools of new design

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Category: Mining mechanics

Last Updated on Monday, 08 February 2016 22:26

Published on Monday, 08 February 2016 22:26

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Authors:

A.Ye. Asan, Kazakh National Technical University named after K.I. Satpaev, doctoral student, Almaty, Kazakhstan.

Yu.Ye. Budyukov, Dr. Sci. (Tech.), Professor, Open Joint-Stock Company “Tula Scientific-Research Geologic Enterprise”, Tula, Russian Federation.

V.I. Spirin, Dr. Sci. (Tech.), Professor, Open Joint-Stock Company “Tula Scientific-Research Geologic Enterprise”, General Director, Research Fellow, Tula, Russian Federation.

Z.A. Ibragimova, Ph.D., M.O. Auezov South-Kazakhstan State University, Shymkent, Kazakhstan.

Abstract:

Purpose. Modernization of the technical solutions to improve the removable diamond rock-breaking tools taking into account the various stages of wear out of diamond bits.

Methodology. The methods of mathematical modelling and comparative analysis were employed in the research, experimental study was carried out.

Findings. The bar rigged shell has been proposed that contains an outer pipe, a shoe with grooves, a retrievable core receiver with a core catcher adapter linked with the removable telescoping drill bit consisting of drill bit members, arranged according to the collet’s sectors, there are cants on its internal surfaces. The lugs have been made on the outer cone of core catcher, and there are longitudinal grooves on an internal surface of cants sectors. When changing the position of the drill bit from transport to operational position, the lugs and grooves interact with each other, and in the working position of the drill bit lugs through grooves on collet sectors interact with the shoe grooves.

Originality. The analysis of the research showed the following:

- The greatest efforts for rotation of drill bit from the transport to operational position and back are in the angular range of 75−90º, i.e. in the final and the initial stages of the corresponding operations.

- The bearing springs influence greatly on the effort of the drill bit rotation. Because of their consecutive operation, the efforts step change depending on the turn angle of the drill bit.

Practical value. The values of the calculated efforts suggest a possible mechanism for the implementation of the structural removal and installation of a removable diamond drill bit with the diameter of 59 mm inside the drill. To expand the rational use of removable bits it is necessary to complete the SRK-76 with the pilot drill bits and sectors, which are similar to the type of the diamonds grains, matrix and geometry of the end to the diamond bit of serial-type SSK, and special attention should be paid to increasing the wear resistance of the pilot part of the sectors at greatest wear out.

The use of removable bits is the most expedient as the shells part with removable core receivers.

References:

1. Patent No. 2158344 RF MPK7 E21V 10/64. Onischin, V.P., Andrianov, I.N. (2000), Burovoy snaryad [Drill Stem], Publ. October 27, 2000.

Пат. № 2158344 РФ МПК⁷ Е21В 10/64. Буровой снаряд / В.П. Онищин, И.Н. Андрианов и др. − Опубл. 27.10.2000.

2. Onischin, V.P. and Holloway, J.T. (1997), “Test of replaceable drill through tools under alternating loads”, Proc. of the 3rd International Symposium on Drilling in Abnormal Operating Conditions, St. Petersburg, SPGGI, pp. 10−12.

Онищин В.П. Испытание съемного породоразрушающего инструмента в условиях знакопеременных загрузок: сб. док. 3-го международного симпозиума по бурению скважин в осложненных условиях / В.П. Онищин, J.T. Холлуэй − СПб: изд. СПГГИ, 1997.− С. 10−12.

3. Onischin, V.P. and Blinov, G.A., (1990), Metody, tekhnologiya i organizatsyya burovykh rabot [Methods, Technology and Organization of Drilling with the Use of Removable Tools], Nedra, St. Petersburg, Russian Federation.

Методы, технология и организация буровых работ с использованием съемного инструмента / [Онищин В.П., Блинов Г.А. и др.] − СПб.: Недра, 1990. − 138 с.

4. Budyukov, Yu.Ye., Vlasyuk, V.I. and Spirin, V.I. (2007), Almaznyi instrument dlya bureniya napravlennykh skvazhyn [Diamond Tools for Drilling Directional Wells], “Grief and K”, Tula, Russian Federation.

Будюков Ю.Е. Алмазный инструмент для бурения направленных скважин / Будюков Ю.Е., Власюк В.И., Спирин В.И. – Тула: «Гриф и К», 2007 – 176 с.

5. Vlasyuk, V.I., Budyukov, Yu.Ye. and Spirin, V.I. (2013), [Technical Tools and Technologies to Improve the Quality of Drilling], “Grief and K”, Tula, Russian Federation.

Власюк В.И. Технические средства и технологии для повышения качества бурения скважин / Власюк В.И., Будюков Ю.Е., Спирин В.И. – Тула: Гриф и К, 2013. − 176 с.

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