Research on cutter surface shapes and rock breaking efficiency under high well temperature

Song, Dongdong; Ren, Zhangping; Yang, Yingxin; Ren, Haitao

doi:10.1016/j.geoen.2023.211422

Cited by 6 publications

(2 citation statements)

References 7 publications

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“…The crushing pits produced by the teeth can interrupt the continuous scraping action of PDC cutters, which causes overheating of the cutters, and thus mitigate thermal wear on the cutters and contribute to prolonging the lifespan of the cutters. They can also help the PDC bit to penetrate into the formation to achieve the shearing of the rock, which is a highly efficient rock-breaking mechanism in comparison with grinding [31,32].…”

Section: Application Of 3d Printing Technology To Pdc-cone Hybrid Bitsmentioning

confidence: 99%

Application of Three-Dimensional Printing Technology to the Manufacture of Petroleum Drill Bits

Liu,

Wang,

Jiang

et al. 2023

Processes

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Drill bits are the main rock-breaking tools in the petroleum and gas industry. Their performance directly affects the quality, efficiency, and cost of drilling. Drill bit manufacturing mainly employs traditional mold forming processes such as milling molding and press molding, which have low production efficiency and long processing cycles and are not conducive to rapid responses to field requirements. Inadequate production accuracy makes it difficult to produce drill bits with complex structures. Three-dimensional (3D) printing technology has fast molding speeds and high molding accuracy. In this paper, 3D printing was applied for the first time to the manufacture of molds for carcass polycrystalline diamond compact (PDC) drill bits and PDC–cone hybrid drill bits. In comparison with forging and milling molding, 3D printing improved production efficiency. The manufactured molds had higher machining accuracy. The ability of 3D printing to make molds with complex surfaces enables the development of drill bits with complex structures. A field experiment was conducted on a PDC drill bit produced by 3D printing, which had a higher rate of penetration and was more efficient in breaking rocks than bits manufactured by traditional processes. The ROP of the drill bit increased by 20.1–25.8%, and the drilling depth increased by 7.7–29.5%. It is therefore feasible to apply 3D printing to the manufacture of petroleum drill bits.

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Section: Application Of 3d Printing Technology To Pdc-cone Hybrid Bitsmentioning

confidence: 99%

Application of Three-Dimensional Printing Technology to the Manufacture of Petroleum Drill Bits

Liu,

Wang,

Jiang

et al. 2023

Processes

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“…Tubular string buckling is a well-known concern that often arises in drilling engineering, which leads to severe consequences, such as wellbore enlargement [1], wellbore collapse [2,3], pipe-sticking, and equipment damage [4,5]. Therefore, it is essential to understand the buckling behavior of tubular string as the tubular string buckling directly impacts drilling safety, drilling efficiency, and cost control [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Study on the evolution of buckling behavior of tubular string under frictional effects in horizontal wells

Wu,

Fang,

Huang

et al. 2024

J. vibroeng.

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The buckling behavior of tubular string is critical for safe oil and gas resource development. In practical engineering, the buckling of tubular string can appear in different development phases, such as casing putting into wellbore, BHA drilling rock, pipeline buckling, etc. Therefore, in this paper, the buckling behavior and buckling evolution of the tubular string are explored considering friction in horizontal wells. By applying the principles of static equilibrium and beam-string theory, an established theoretical model is utilized to examine the buckling behavior of tubular string. The critical load for sinusoidal buckling is determined by using both the series and trial function methods, and a comparison is made between the results obtained from these two techniques. In addition, perturbation analysis is used to obtain the angular displacement's configuration function in the helical buckling post-buckling state. To validate the model's effectiveness, a comprehensive analysis of the numerical results is performed, considering both sinusoidal and helical buckling scenarios. The research findings demonstrate that both the series method and the trial function method can effectively analyze sinusoidal buckling with high accuracy. The presence of friction significantly impedes the buckling behavior of the tubular string. Moreover, friction’s influence causes a gradual decline in the efficiency of transmitting axial forces along the wellbore axis.

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Research on expression method of PDC bit wear uncertainty and influence of lateral force

Tao

Rong

et al. 2023

Geoenergy Science and Engineering

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Research on cutter surface shapes and rock breaking efficiency under high well temperature

Cited by 6 publications

References 7 publications

Application of Three-Dimensional Printing Technology to the Manufacture of Petroleum Drill Bits

Application of Three-Dimensional Printing Technology to the Manufacture of Petroleum Drill Bits

Study on the evolution of buckling behavior of tubular string under frictional effects in horizontal wells

Research on expression method of PDC bit wear uncertainty and influence of lateral force

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