Cutting Mechanism Study of an Innovative Non-Planar Cutter PDC Bit and Its Field Application

Ning Li; Xueqing Teng; Hongtao Liu; Duanrui Zhang; Bo Zhou; Li Zhao; Renqing He; Jinsong Guo

doi:doi:10.11648/j.ogce.20200803.11

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Cutting Mechanism Study of an Innovative Non-Planar Cutter PDC Bit and Its Field Application

Ning Li, Xueqing Teng, Hongtao Liu, Duanrui Zhang, Bo Zhou, Li Zhao, Renqing He, Jinsong Guo

Published in International Journal of Oil, Gas and Coal Engineering (Volume 8, Issue 3)

Received: 16 April 2020 Accepted: 7 May 2020 Published: 28 May 2020

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Abstract

Tarim Kuqa tight sandstone reservoir is overlaid with extreme thick conglomerate, which has high compressive strength, strong heterogeneity and poor drill ability, resulting in low drilling ROP and less bit drilling footage. Through research study and analysis of PDC bit failure and wear modes, this paper described the development of an innovative non-planar PDC bit through cutting mechanism study and lab testing verification. When drilling through the strong homogeneity formation, it will still be surface contact between the non-planar cutter and the rock and therefore the rock-breaking mechanism is still the conventional shearing fracturing; When drilling through the heterogeneity formation, the convex ridges will generate the linear contact with the hard rock and the mechanical stress will be accumulated at the conglomerate surface to initially create the cracking and then break the rock with composite cutting mechanism of shearing and crushing to improve the rock breaking efficiency. Experimental results also showed that the non-planar cutter delivers several folds of impact resistance improvement over conventional cutter. The bit was successfully field tested in ultra-thick conglomerate layer in the Kuqa foreland thrust belt of the Tarim basin. The field test tripled bit footage and doubled ROP comparing to same intervals and formation in offset wells. It demonstrated the broader prospect of the non-planar PDC technology in conglomerate and highly heterogeneous applications.

Published in	International Journal of Oil, Gas and Coal Engineering (Volume 8, Issue 3)
DOI	10.11648/j.ogce.20200803.11
Page(s)	53-57
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2020. Published by Science Publishing Group

Keywords

Non-Planar Cutter, PDC Bit, Conglomerate Drilling, Performance Improvement, Tarim Oilfield

References

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APA Style

Ning Li, Xueqing Teng, Hongtao Liu, Duanrui Zhang, Bo Zhou, et al. (2020). Cutting Mechanism Study of an Innovative Non-Planar Cutter PDC Bit and Its Field Application. International Journal of Oil, Gas and Coal Engineering, 8(3), 53-57. https://doi.org/10.11648/j.ogce.20200803.11

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ACS Style

Ning Li; Xueqing Teng; Hongtao Liu; Duanrui Zhang; Bo Zhou, et al. Cutting Mechanism Study of an Innovative Non-Planar Cutter PDC Bit and Its Field Application. Int. J. Oil Gas Coal Eng. 2020, 8(3), 53-57. doi: 10.11648/j.ogce.20200803.11

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AMA Style

Ning Li, Xueqing Teng, Hongtao Liu, Duanrui Zhang, Bo Zhou, et al. Cutting Mechanism Study of an Innovative Non-Planar Cutter PDC Bit and Its Field Application. Int J Oil Gas Coal Eng. 2020;8(3):53-57. doi: 10.11648/j.ogce.20200803.11

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@article{10.11648/j.ogce.20200803.11,
  author = {Ning Li and Xueqing Teng and Hongtao Liu and Duanrui Zhang and Bo Zhou and Li Zhao and Renqing He and Jinsong Guo},
  title = {Cutting Mechanism Study of an Innovative Non-Planar Cutter PDC Bit and Its Field Application},
  journal = {International Journal of Oil, Gas and Coal Engineering},
  volume = {8},
  number = {3},
  pages = {53-57},
  doi = {10.11648/j.ogce.20200803.11},
  url = {https://doi.org/10.11648/j.ogce.20200803.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ogce.20200803.11},
  abstract = {Tarim Kuqa tight sandstone reservoir is overlaid with extreme thick conglomerate, which has high compressive strength, strong heterogeneity and poor drill ability, resulting in low drilling ROP and less bit drilling footage. Through research study and analysis of PDC bit failure and wear modes, this paper described the development of an innovative non-planar PDC bit through cutting mechanism study and lab testing verification. When drilling through the strong homogeneity formation, it will still be surface contact between the non-planar cutter and the rock and therefore the rock-breaking mechanism is still the conventional shearing fracturing; When drilling through the heterogeneity formation, the convex ridges will generate the linear contact with the hard rock and the mechanical stress will be accumulated at the conglomerate surface to initially create the cracking and then break the rock with composite cutting mechanism of shearing and crushing to improve the rock breaking efficiency. Experimental results also showed that the non-planar cutter delivers several folds of impact resistance improvement over conventional cutter. The bit was successfully field tested in ultra-thick conglomerate layer in the Kuqa foreland thrust belt of the Tarim basin. The field test tripled bit footage and doubled ROP comparing to same intervals and formation in offset wells. It demonstrated the broader prospect of the non-planar PDC technology in conglomerate and highly heterogeneous applications.},
 year = {2020}
}

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TY  - JOUR
T1  - Cutting Mechanism Study of an Innovative Non-Planar Cutter PDC Bit and Its Field Application
AU  - Ning Li
AU  - Xueqing Teng
AU  - Hongtao Liu
AU  - Duanrui Zhang
AU  - Bo Zhou
AU  - Li Zhao
AU  - Renqing He
AU  - Jinsong Guo
Y1  - 2020/05/28
PY  - 2020
N1  - https://doi.org/10.11648/j.ogce.20200803.11
DO  - 10.11648/j.ogce.20200803.11
T2  - International Journal of Oil, Gas and Coal Engineering
JF  - International Journal of Oil, Gas and Coal Engineering
JO  - International Journal of Oil, Gas and Coal Engineering
SP  - 53
EP  - 57
PB  - Science Publishing Group
SN  - 2376-7677
UR  - https://doi.org/10.11648/j.ogce.20200803.11
AB  - Tarim Kuqa tight sandstone reservoir is overlaid with extreme thick conglomerate, which has high compressive strength, strong heterogeneity and poor drill ability, resulting in low drilling ROP and less bit drilling footage. Through research study and analysis of PDC bit failure and wear modes, this paper described the development of an innovative non-planar PDC bit through cutting mechanism study and lab testing verification. When drilling through the strong homogeneity formation, it will still be surface contact between the non-planar cutter and the rock and therefore the rock-breaking mechanism is still the conventional shearing fracturing; When drilling through the heterogeneity formation, the convex ridges will generate the linear contact with the hard rock and the mechanical stress will be accumulated at the conglomerate surface to initially create the cracking and then break the rock with composite cutting mechanism of shearing and crushing to improve the rock breaking efficiency. Experimental results also showed that the non-planar cutter delivers several folds of impact resistance improvement over conventional cutter. The bit was successfully field tested in ultra-thick conglomerate layer in the Kuqa foreland thrust belt of the Tarim basin. The field test tripled bit footage and doubled ROP comparing to same intervals and formation in offset wells. It demonstrated the broader prospect of the non-planar PDC technology in conglomerate and highly heterogeneous applications.
VL  - 8
IS  - 3
ER  -

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Author Information

Ning Li

PetroChina Tarim Oilfield Company, Korla, Xinjiang, China
Xueqing Teng

PetroChina Tarim Oilfield Company, Korla, Xinjiang, China
Hongtao Liu

PetroChina Tarim Oilfield Company, Korla, Xinjiang, China
Duanrui Zhang

PetroChina Tarim Oilfield Company, Korla, Xinjiang, China
Bo Zhou

PetroChina Tarim Oilfield Company, Korla, Xinjiang, China
Li Zhao

PetroChina Tarim Oilfield Company, Korla, Xinjiang, China
Renqing He

PetroChina Tarim Oilfield Company, Korla, Xinjiang, China
Jinsong Guo

Petro China, Bohai Drilling Engineering Company, Directional Drilling Branch, Tianjin, China

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APA Style

Ning Li, Xueqing Teng, Hongtao Liu, Duanrui Zhang, Bo Zhou, et al. (2020). Cutting Mechanism Study of an Innovative Non-Planar Cutter PDC Bit and Its Field Application. International Journal of Oil, Gas and Coal Engineering, 8(3), 53-57. https://doi.org/10.11648/j.ogce.20200803.11

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ACS Style

Ning Li; Xueqing Teng; Hongtao Liu; Duanrui Zhang; Bo Zhou, et al. Cutting Mechanism Study of an Innovative Non-Planar Cutter PDC Bit and Its Field Application. Int. J. Oil Gas Coal Eng. 2020, 8(3), 53-57. doi: 10.11648/j.ogce.20200803.11

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AMA Style

Ning Li, Xueqing Teng, Hongtao Liu, Duanrui Zhang, Bo Zhou, et al. Cutting Mechanism Study of an Innovative Non-Planar Cutter PDC Bit and Its Field Application. Int J Oil Gas Coal Eng. 2020;8(3):53-57. doi: 10.11648/j.ogce.20200803.11

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@article{10.11648/j.ogce.20200803.11,
  author = {Ning Li and Xueqing Teng and Hongtao Liu and Duanrui Zhang and Bo Zhou and Li Zhao and Renqing He and Jinsong Guo},
  title = {Cutting Mechanism Study of an Innovative Non-Planar Cutter PDC Bit and Its Field Application},
  journal = {International Journal of Oil, Gas and Coal Engineering},
  volume = {8},
  number = {3},
  pages = {53-57},
  doi = {10.11648/j.ogce.20200803.11},
  url = {https://doi.org/10.11648/j.ogce.20200803.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ogce.20200803.11},
  abstract = {Tarim Kuqa tight sandstone reservoir is overlaid with extreme thick conglomerate, which has high compressive strength, strong heterogeneity and poor drill ability, resulting in low drilling ROP and less bit drilling footage. Through research study and analysis of PDC bit failure and wear modes, this paper described the development of an innovative non-planar PDC bit through cutting mechanism study and lab testing verification. When drilling through the strong homogeneity formation, it will still be surface contact between the non-planar cutter and the rock and therefore the rock-breaking mechanism is still the conventional shearing fracturing; When drilling through the heterogeneity formation, the convex ridges will generate the linear contact with the hard rock and the mechanical stress will be accumulated at the conglomerate surface to initially create the cracking and then break the rock with composite cutting mechanism of shearing and crushing to improve the rock breaking efficiency. Experimental results also showed that the non-planar cutter delivers several folds of impact resistance improvement over conventional cutter. The bit was successfully field tested in ultra-thick conglomerate layer in the Kuqa foreland thrust belt of the Tarim basin. The field test tripled bit footage and doubled ROP comparing to same intervals and formation in offset wells. It demonstrated the broader prospect of the non-planar PDC technology in conglomerate and highly heterogeneous applications.},
 year = {2020}
}

Copy | Download

TY  - JOUR
T1  - Cutting Mechanism Study of an Innovative Non-Planar Cutter PDC Bit and Its Field Application
AU  - Ning Li
AU  - Xueqing Teng
AU  - Hongtao Liu
AU  - Duanrui Zhang
AU  - Bo Zhou
AU  - Li Zhao
AU  - Renqing He
AU  - Jinsong Guo
Y1  - 2020/05/28
PY  - 2020
N1  - https://doi.org/10.11648/j.ogce.20200803.11
DO  - 10.11648/j.ogce.20200803.11
T2  - International Journal of Oil, Gas and Coal Engineering
JF  - International Journal of Oil, Gas and Coal Engineering
JO  - International Journal of Oil, Gas and Coal Engineering
SP  - 53
EP  - 57
PB  - Science Publishing Group
SN  - 2376-7677
UR  - https://doi.org/10.11648/j.ogce.20200803.11
AB  - Tarim Kuqa tight sandstone reservoir is overlaid with extreme thick conglomerate, which has high compressive strength, strong heterogeneity and poor drill ability, resulting in low drilling ROP and less bit drilling footage. Through research study and analysis of PDC bit failure and wear modes, this paper described the development of an innovative non-planar PDC bit through cutting mechanism study and lab testing verification. When drilling through the strong homogeneity formation, it will still be surface contact between the non-planar cutter and the rock and therefore the rock-breaking mechanism is still the conventional shearing fracturing; When drilling through the heterogeneity formation, the convex ridges will generate the linear contact with the hard rock and the mechanical stress will be accumulated at the conglomerate surface to initially create the cracking and then break the rock with composite cutting mechanism of shearing and crushing to improve the rock breaking efficiency. Experimental results also showed that the non-planar cutter delivers several folds of impact resistance improvement over conventional cutter. The bit was successfully field tested in ultra-thick conglomerate layer in the Kuqa foreland thrust belt of the Tarim basin. The field test tripled bit footage and doubled ROP comparing to same intervals and formation in offset wells. It demonstrated the broader prospect of the non-planar PDC technology in conglomerate and highly heterogeneous applications.
VL  - 8
IS  - 3
ER  -

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