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Analysis of Pressure and Production Transient Characteristics of Composite Reservoir with Moving Boundary

Author

Listed:
  • Zhixue Sun

    (School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China)

  • Xugang Yang

    (School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China)

  • Yanxin Jin

    (Shengli Oilfield Petroleum Engineering Research Institute of SinoPec, Dongying 257061, China)

  • Shubin Shi

    (Shengli Oilfield Petroleum Engineering Research Institute of SinoPec, Dongying 257061, China)

  • Minglu Wu

    (School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China)

Abstract

The mathematical model of composite reservoir has been widely used in well test analysis. In the process of oil recovery, due to the injection or replacement of the displacement agent, the model boundary can be moved. At present, the mathematical model of a composite reservoir with a moving boundary is less frequently studied and cannot meet industrial demand. In this paper, a mathematical model of a composite reservoir with a moving boundary is developed, with consideration of wellbore storage and skin effects. The characteristics of pressure transient in moving boundary composite reservoir are studied, and the influences of parameters, such as initial boundary radius, moving boundary velocity, skin factor, wellbore storage coefficient, diffusion coefficient ratio, and mobility ratio on pressure and production, are analyzed. The moving boundary effects are noticeable mainly in the middle and late production stages. The proposed model provides a novel theoretical basis for well test analysis in these types of reservoirs.

Suggested Citation

  • Zhixue Sun & Xugang Yang & Yanxin Jin & Shubin Shi & Minglu Wu, 2019. "Analysis of Pressure and Production Transient Characteristics of Composite Reservoir with Moving Boundary," Energies, MDPI, vol. 13(1), pages 1-18, December.
    • Handle: RePEc:gam:jeners:v:13:y:2019:i:1:p:34-:d:299980
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    References listed on IDEAS

    as
    1. Mohebbi, Rasul & Delouei, Amin Amiri & Jamali, Amin & Izadi, Mohsen & Mohamad, Abdulmajeed A., 2019. "Pore-scale simulation of non-Newtonian power-law fluid flow and forced convection in partially porous media: Thermal lattice Boltzmann method," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 525(C), pages 642-656.
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