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Study on the Optimal Volume Fracturing Design for Horizontal Wells in Tight Oil Reservoirs

Author

Listed:
  • Yenan Jie

    (Petroleum Engineering College, Xi’an Shiyou University, Xi’an 710065, China)

  • Jing Yang

    (Oil Recovery Plant No.12, PetroChina Changqing Oilfield Company, Qingyang 745400, China)

  • Desheng Zhou

    (Petroleum Engineering College, Xi’an Shiyou University, Xi’an 710065, China)

  • Haiyang Wang

    (Petroleum Engineering College, Xi’an Shiyou University, Xi’an 710065, China)

  • Yi Zou

    (Petroleum Engineering College, Xi’an Shiyou University, Xi’an 710065, China
    Oil and Gas Engineering Research Institute of Jilin Oilfield, Songyuan 138000, China)

  • Yafei Liu

    (Petroleum Engineering College, Xi’an Shiyou University, Xi’an 710065, China)

  • Yanjun Zhang

    (Petroleum Engineering College, Xi’an Shiyou University, Xi’an 710065, China)

Abstract

The application of horizontal well volume fracturing technology is an important method for enhancing oil recovery in tight oil reservoirs. However, the influence mechanism of the fracture placement scheme (FPC) on postfracturing productivity is still unclear. Based on the theory of the black oil model, combined with the reservoir stimulation characteristics of horizontal well volume fracturing in tight oil reservoirs, this paper established a postfracturing reservoir production simulation model. History fitting was used to verify the accuracy of the production model simulations. A series of numerical simulations was carried out to study the influence mechanisms of the fracture parameters and FPC on productivity. The simulation results show that compared with the fracture conductivity, the fracture length and number are the main parameters affecting tight oil reservoir productivity. Selecting a reasonable fracture length and number can realize the economical and efficient production of tight oil reservoir volume fracturing. Compared with the traditional fracture equal-length scheme, an FPC with an uneven fracture length can increase the cumulative oil production of oil wells. Under the condition of the same total fracture length, the scheme with a staggered distribution of long fractures and short fractures has the largest cumulative oil production over five years. A reasonable well spacing can greatly reduce the impact of interwell interference on postfracturing dual branch horizontal well productivity. When dual branch horizontal well fractures are alternately distributed, the postfracturing productivity is higher. The production simulation model established in this paper provides a method to accurately evaluate the productivity of horizontal wells after volume fracturing, which can provide guidance for the optimization of hydraulic fracturing operation parameters.

Suggested Citation

  • Yenan Jie & Jing Yang & Desheng Zhou & Haiyang Wang & Yi Zou & Yafei Liu & Yanjun Zhang, 2022. "Study on the Optimal Volume Fracturing Design for Horizontal Wells in Tight Oil Reservoirs," Sustainability, MDPI, vol. 14(23), pages 1-15, November.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:23:p:15531-:d:980602
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    References listed on IDEAS

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    1. Long Yu & Jinjie Wang & Chong Wang & Daixin Chen, 2019. "Enhanced Tight Oil Recovery by Volume Fracturing in Chang 7 Reservoir: Experimental Study and Field Practice," Energies, MDPI, vol. 12(12), pages 1-22, June.
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    Cited by:

    1. Yi Zou & Desheng Zhou & Xianlin Ma & Yenan Jie & Xiaoxiang Wang & Hongxia Liu, 2023. "Optimization of Mathematical Function-Shaped Fracture Distribution Patterns for Multi-Stage Fractured Horizontal Wells," Energies, MDPI, vol. 16(13), pages 1-16, June.

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