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Numerical study on transient flow in the deep naturally fractured reservoir with high pressure

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Abstract

According to the experimental results and the characteristics of the pressure-sensitive fractured formation, a transient flow model is developed for the deep naturally-fractured reservoirs with different outer boundary conditions. The finite element equations for the model are derived. After generating the unstructured grids in the solution regions, the finite element method is used to calculate the pressure type curves for the pressure-sensitive fractured reservoir with different outer boundaries, such as the infinite boundary, circle boundary and combined linear boundaries, and the characteristics of the type curves are comparatively analyzed. The effects on the pressure curves caused by pressure sensitivity module and the effective radius combined parameter are determined, and the method for calculating the pressure-sensitive reservoir parameters is introduced. By analyzing the real field case in the high temperature and pressure reservoir, the perfect results show that the transient flow model for the pressure-sensitive fractured reservoir in this paper is correct.

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Authors and Affiliations

  1. Division of Engineering Science, Institute of Mechanics, Chinese Academy of Sciences, Bei**g, 100190, China

    YueWu Liu, WeiLiang Chen & QingQuan Liu

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  1. YueWu Liu
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  2. WeiLiang Chen
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  3. QingQuan Liu
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Correspondence to YueWu Liu.

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Liu, Y., Chen, W. & Liu, Q. Numerical study on transient flow in the deep naturally fractured reservoir with high pressure. Sci. China Ser. G-Phys. Mech. Astron. 52, 1074–1085 (2009). https://doi.org/10.1007/s11433-009-0121-2

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  • DOI: https://doi.org/10.1007/s11433-009-0121-2

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