Calculations on Enhancement of Polycrystalline Diamond Bits through Addition of Superhard Diamond-Reinforced Elements

Ratov B. Rucki M. Fedorov B. Hevorkian E. Siemiatkowski Z. Muratova S. Omirzakova E. Kuttybayev A. Mechnik V. Bondarenko N.
April 2023 MDPI

Machines
2023 #11 Issue 4

The paper is dedicated to the enhancement of Polycrystalline Diamond Bits (PDC) designed for oil and gas industry. A novel diamond-reinforced composite was applied for cutting inserts, with the addition of 4 wt% chromium diboride to the WC-Co matrix. The addition of CrB₂ ensured improvement of bending strength and fracture toughness by nearly 30% and 40%, respectively, and enhanced the diamond retention force. The efficiency of PDC bits was further improved by incorporating constructional features in both bottomhole and reaming parts. An analytical relationship between the feeding speed and geometrical parameters was found, including the wings and calibrating inserts numbers, as well as the rotational speed of the cutter. Under the conditions of rock fracture by reaming inserts, the approximate value of the required power was calculated.

drilling efficiency , mining , PDC bit design , Polycrystalline Diamond Bits , well drilling

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Institute of Geology, Oil and Mining, K. Satbayev Kazakh National Technical University, 22a Satpaev Str, Almaty, 050013, Kazakhstan
Institute of Mechanical Science, Vilnius Gediminas Technical University, Saulėtekio al. 11, Vilnius, LT-10223, Lithuania
Faculty of Mechanical Engineering, Kazimierz Pulaski University of Technology and Humanities in Radom, Stasieckiego 54, Radom, 26-600, Poland
Institute of Oil, Mining, Geology, and IT, Caspian University, Dostyk 85A, Almaty, 050000, Kazakhstan
V. Bakul Institute for Superhard Materials of the Nationa Academy of Sciences of Ukraine, Avtozavodska Str. 2, Kyiv, 04074, Ukraine

Institute of Geology
Institute of Mechanical Science
Faculty of Mechanical Engineering
Institute of Oil
V. Bakul Institute for Superhard Materials of the Nationa Academy of Sciences of Ukraine

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