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Research on Fracture Propagation by Cryogenic Volume Fracturing Based on Dem

  • Donghe Yu
  • Yuanzhao Jia
  • Xi Yu
  • Guohua Liu
  • Hang Che
  • Mengmeng Ning
  • Donglei Li
Conference paper
Part of the Springer Series in Geomechanics and Geoengineering book series (SSGG)

Abstract

Due to the defects of active water fracturing fluid properties and the particularity of coal in the structure and mechanical properties, the conventional hydraulic fracturing is not applicable to high-rank coal seam, which is prone to the problems of excessive extension of fracture height, short effective propped fracture length. This paper introduces cryogenic technology into the coalbed methane(CBM) fracturing and puts forward a new cryogenic volume fracturing technology, whose mechanism is: alternative injecting water and cryogenic fluid by small rate to freeze the water in the fracture and cleat, temporary plugging fracture to divert, forming complex fracture networks to increasing CBM production. In this paper, the discrete element method (DEM) is adopted to establish a two-dimensional fracture propagation model to simulate cryogenic volume fracturing in CBM. The different injection temperature and pressure are simulated to study fracture propagation rules. The results show that with injection pressure increasing and temperature reducing, fracture networks become more complex and larger. Cryogenic volume fracturing can form ice temporary plugging to effectively increase the network complexity and SRV.

Keywords

Cryogenic volume fracturing Discrete element method Ice temporary plugging Fracture propagation Fracture network 

Notes

Acknowledgements

The financial support for this research was provided by the Engineering Technology Research Institute of Huabei Oilfield and is greatly appreciated. Also, the author would like to thank the assistance from Mr. Yu. Last, I give my most sincere love to my family, and their company is the biggest encouragement for me.

References

  1. 1.
    Zhao D, Feng Z, Zhao Y (2001) Experimental study of effects of high pressure water injection on desorption characteristic of coal-bed methane. Chin J Rock Mech Eng 30(3):547–555Google Scholar
  2. 2.
    Guo H, Su X (2010) Research on the mechanism of gas emission inhibition in water-flooding coal seam. J China Coal Soc 35(6):928–931Google Scholar
  3. 3.
    Yu P, Yang Y, Zhu Q et al (2015) Study on CBM fracturing technology and technical improvement test for high-rank coal in Qinshui basin. China Coalbed Methane 12(1):21–26Google Scholar
  4. 4.
    Luo P (2013) A discussion on how to significantly improve the single-well productivity of CBM gas wells in China. Nat Gas Ind 33(6):1–6Google Scholar
  5. 5.
    Cheng L, Cheng Y, Zhu D et al (2014) Feasibility study on application of volume fracturing technology to coalbed methane development. Xinjiang Pet Geol 33(5):598–602Google Scholar
  6. 6.
    Lin Y, Peng S, Zhou X et al (2015) Feasibility research on SRV technique in coal bed methane. West China Explor Eng 04:59–61Google Scholar
  7. 7.
    Chen W, Wu J, Sun H et al (2017) Study on network fracturing technology for coalbed methane. Sci Technol Eng 17(9):22–29Google Scholar
  8. 8.
    Cundall PA (1971) A computer model for simulating progressive large scale movements in blocky rock system. In: Proceedings of the symposium of the international society of rock mechanics. Nancy, FranceGoogle Scholar
  9. 9.
    Itasca Consulting Group Inc (2004) PFC3D theory and background. Itasca Consulting Group Inc, Minneapolis, pp 1–2Google Scholar
  10. 10.
    Huang Y, Yang S (2014) Patricle flow simulation of macro-and meso-mechanical behavior of red sandstone containing two pri-existing non-coplanar fissures. Chin J Rock Mech Eng 33(08):1644–1653Google Scholar
  11. 11.
    Huang D, Cen D, Huang R (2013) Influence of medium strain rate on sandstone with a single pre-crack under uniaxial compression using PFC simulation. Rock Soil Mech 34(02):535–545Google Scholar
  12. 12.
    Cong Y, Wang Z, Zheng Y (2015) Experimental study on microscopic parameters of brittle materials based on particle flow theory. Chin J Geotech Eng 37(06):1031–1040Google Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Donghe Yu
    • 1
  • Yuanzhao Jia
    • 1
  • Xi Yu
    • 2
  • Guohua Liu
    • 1
  • Hang Che
    • 1
  • Mengmeng Ning
    • 1
  • Donglei Li
    • 3
  1. 1.Engineering Technology Research Institute of Huabei Oilfield CoRenqiuChina
  2. 2.Research Center of China United Coalbed Methane Co. LtdBeijingChina
  3. 3.No. 2 Mud Logging Company, Bohai Drilling Engineer Company LimitedTianjinChina

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