Development and improvement of design factors for PDC cutter bits

Authors: Ратов Б. Т., Федоров Б. В., Омирзакова Э. Ж., Коргасбеков Д. Р.

The process of hole making is examined. First, a pilot hole is made with formation of additional free surfaces. In further deepening of coal, cutters come into contact with core. As a result, the core column is only connected to rock mass at bottom, which facilitates core breaking and removal by wash liquid fed from hydraulic nozzle. At the same time, picks in the first row on the blade of the reamer get into contact with rock mass, break it and ream out the hole to an intermediate diameter. The further deepening of the hole goes in parallel with core breaking and hole reaming to the second intermediate diameter under the contact between the second row picks and rock mass. The process is continued until the hole is reamed to the rated diameter DH. The hole reaming up to a required size needs much less energy than the pilot hole making; for this reason, each reamer blade has only 4 PDC cutters (in accordance with the number of the blades) despite much greater volume of rock breaking. Mud cleaning is carried out using the washing system composed of channels connected to the central end-to-end channel and hydraulic nozzles mounted at the end of the pilot hole maker, internal brattice in the tube body and on the blades of the reamer.


Keywords: Drill bit, drilling, plant, bladed bit, mud, core, core breaker, blade, diamond carbide blades, mud flow channel.
For citation:

Ratov B. T., Fedorov B. V., Omirzakova E. J., Korgasbekov D. R. Development and improvement of design factors for PDC cutter bits. MIAB. Mining Inf. Anal. Bull. 2019;(11):73-80. [In Russ]. DOI: 10.25018/0236-1493-2019-11-0-73-80.

Issue number: 11
Year: 2019
Page number: 73-80
ISBN: 0236-1493
UDK: 622.17
DOI: 10.25018/0236-1493-2019-11-0-73-80
Article receipt date: 01.01.1970
Date of review receipt: 01.01.1970
Date of the editorial board′s decision on the article′s publishing: 01.01.1970
About authors:

B.T. Ratov1, Dr. Sci. (Eng.), Professor, e-mail:,
B.V. Fedorov1, Dr. Sci. (Eng.), Professor,
E.J. Omirzakova1, Cand. Sci. (Eng.), Assoc. professor,
Caspian Public University, (Caspian University), Almaty, Kazakhstan,
D.R. Korgasbekov1, Tyutor, Master of technical science,
1 Satbayev University, 050013, Almaty, Kazakhstan.

For contacts:

B. T. Ratov, e-mail:


1. Kalinin A. G., Oganov A. S., Sazonov A. A., Bastrikov S. N. Stroitel'stvo neftyanykh i gazovykh skvazhin. T. 1 [Oil and gas well construction. Vol. 1], Moscow, Izd. tsentr RGU nefti i gaza im. I.M. Gubkina, 2013.
2. Fedorov B., Ratov B., Sharauova A. Development of the model of petroleum well boreability with PDC bore bits for Uzen oil field (the Republic of Kazakhstan). Eastern-European Journal of Enterprise Technologies. 2017, 3/1 (87), p. 16—22. DOI: 10.15587/1729-4061.2017.99032.
3. Volodin Yu. I. Osnovy bureniya [Drilling fundamentals], Moscow, Nedra, 1996.
4. Fedorov B. V., Korgasbekov D. R. Bladed bit and scientific justification of its parameters. Gornyy zhurnal Kazakhstana. 2018, no 11, pp. 39—43. [In Russ].
5. Fedorov B. V., Khuzina L. B., Ratov B. T., Sharauova A. B. Modeling borehole drilling by PDC cutter bits. Neft' i gaz. 2017, no 4 (100), pp. 77—85. [In Russ].
6. Gandzhumyan R. A. Prakticheskie raschety v razvedochnom burenii [Practical calculus in exploration drilling], Moscow, Nedra, 1986.
7. Protasov Yu. I. Teoreticheskie osnovy mekhanicheskogo razrusheniya gornykh porod [Theory of rock disintegration], Moscow, Nedra, 1985. 242 p.
8. Kulikov I. V., Voronov V. N., Nikolaev I. I. Pnevmoudarnoe burenie razvedochnykh skvazhin [Air-percussion drilling of exploration holes], Moscow, Nedra, 1987.
9. Kryukov G. M. Teoriya razrusheniya porod pri sharoshechnom i udarno-vrashchatel'nom burenii vzryvnykh skvazhin [Theory of rock disintegration in roller-bit and rotary–percussive drilling of blastholes], Doctor’s thesis, Moscow, 1981.
10. Sudakov А. К., Khomenko О. Ye., Isakova M. L., Sudakova D. A. Concept of numerical experiment of isolation of absorptive horizons by the rmoplastic materials. Scientific bulletin of National Mining University, 2016, no. 5(155), рр. 12—16.
11. Khomenko О. Ye., Sudakov A. K., Malanchuk Z. R., Malanchuk Ye. Z. Principles of rock pressure energy usage during under ground mining of deposits. Scientific Bulletin of NMU. 2017, no 2(158), рр. 34—43.
12. Sudakov А. К., Dreus A. Yu., Khomenko О. Ye., Sudakova D. A. Analitic study of heattransfer in absorbing horizon of boreholesin the formation of protection cryogenic plugging material. Scientific Bulletin of NMU. 2017, no 3(159). рр. 32—46.
13. Rakishev B. R., Shashenko A. N., Kovrov A. S. Trends of therock failure conceptions development. News of the national academy of sciences of the republic of Kazakhstan. Series of geology and technical sciences. 2018, vol. 5, no 431, pp. 161—169.
14. Wills B. A., Finch J. Wills Mineral Processing Technology. An Introduction to the Practical Aspects of Ore Treatment and Mineral Recovery. 2015. Edition 8. p. 512.
15. Krylov I. O., Valavin V. S. Effects of ultrasonic treatment of old tailings at the Kamysh-Burun Iron Ore Plant. Ekologiya i promyshlennost Rossii. 2018. Vol. 22. No. 2. pp. 13—19.
16. Rovin S. L., Rovin L. E. Processing of iron-bearing mining waste. Litie i metally. 2015. No 4(81). pp. 67—70.
17. Povolotsky A. D., Povolotsky V. D., Potapov K. O., Roshchin V. E., Shestakov A. L., Rozovsky A. L. Patent RU 2 539 884 s1. 21.07.2015. Method for processing iron-bearing waste.
18. Bortnikov A. V., Samukov A. D., Spiridonov P. A., Shuloyakov A. D. Batch preparation technology for mineral cotton production based on the use of mineral processing waste. Obogashchenie Rud. 2015. No. 3. pp. 45—49. DOI: 10.17580/or.2015.03.09.
19. Yushina T. I., Krylov I. O., Valavin V. S., Sysa P. A. Producibility of iron-bearing materials from industrial waste of Kamysh-Burin Iron Ore Plant using Romelt process. Gornyy Zhurnal. 2017. No. 6. pp. 53—57. DOI: 10.17580/gzh.2017.06.10.


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