Geomechanics and Engineering

Techno-Press (테크노프레스)
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Study on the distribution law and influencing factors of pressure field distribution before exploitation in heavy oilfield

  • Zhang, Xing (Research Institute of Petroleum Engineering Technology, Shengli Oilfield, SINOPEC) ;
  • Jiang, Ting T. (Hubei Province Key Laboratory of Processing of Mineral Resources and Environment, School of Resource and Environmental Engineering, Wuhan University of Technology) ;
  • Zhang, Jian H. (Hubei Province Key Laboratory of Processing of Mineral Resources and Environment, School of Resource and Environmental Engineering, Wuhan University of Technology) ;
  • Li, Bo (Key Laboratory Geotechnical Mechanics and Engineering of the Mechanics and Engineering of the Minister of Water Resources, Changjiang River Scientific Research Institute) ;
  • Li, Yu B. (Hubei Province Key Laboratory of Processing of Mineral Resources and Environment, School of Resource and Environmental Engineering, Wuhan University of Technology) ;
  • Zhang, Chun Y. (Hubei Province Key Laboratory of Processing of Mineral Resources and Environment, School of Resource and Environmental Engineering, Wuhan University of Technology) ;
  • Xu, Bing B. (Hubei Province Key Laboratory of Processing of Mineral Resources and Environment, School of Resource and Environmental Engineering, Wuhan University of Technology) ;
  • Qi, Peng (Hubei Province Key Laboratory of Processing of Mineral Resources and Environment, School of Resource and Environmental Engineering, Wuhan University of Technology)
  • Received : 2018.11.05
  • Accepted : 2019.05.28
  • Published : 2019.06.10
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Abstract

A calculation model of reservoir pressure field distribution around multiple production wells in a heavy oil reservoir is established, which can overcome the unreasonable uniform-pressure value calculated by the traditional mathematical model in the multiwell mining areas. A calculating program is developed based on the deduced equations by using Visual Basic computer language. Based on the proposed mathematical model, the effects of drainage rate and formation permeability on the distribution of reservoir pressure are studied. Results show that the reservoir pressure drops most at the wellbore. The farther the distance away from the borehole, the sparser the isobaric lines distribute. Increasing drainage rate results in decreasing reservoir pressure and bottom-hole pressure, especially the latter. The permeability has a significant effect on bottom hole pressure. The study provides a reference basis for studying the dynamic pressure field distribution before thermal recovery technology in heavy oilfield and optimizing construction parameters.

Keywords

Acknowledgement

Supported by : National Natural Science Foundation of China

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