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Transient flow model and pressure dynamic features of tree-shaped fractal reservoirs

谭晓华 李晓平

Journal of hydrodynamics. Series B, 2014-08, Vol.26 (4), p.654-663 [Revista revisada por pares]

Singapore: Elsevier Ltd

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  • Título:
    Transient flow model and pressure dynamic features of tree-shaped fractal reservoirs
  • Autor: 谭晓华 李晓平
  • Materias: Engineering ; Engineering Fluid Dynamics ; Hydrology/Water Resources ; naturally fractured reservoir ; Numerical and Computational Physics ; pressure dynamic characteristic ; Simulation ; transient flow ; tree-shaped fractal ; type curve ; 分形油藏 ; 压力动态特征 ; 数值反演方法 ; 数学模型 ; 水库 ; 瞬变流模型 ; 矩阵系统 ; 裂缝性油藏
  • Es parte de: Journal of hydrodynamics. Series B, 2014-08, Vol.26 (4), p.654-663
  • Notas: 31-1563/T
    tree-shaped fractal, transient flow, pressure dynamic characteristic, naturally fractured reservoir, type curve
    TAN Xiao-hua,LI Xiao-ping（State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China）
    A transient flow model of tree-shaped fractal reservoirs is built by embedding a fracture network simulated by a tree-shaped fractal network into a matrix system. The model can be solved using the Laplace conversion method. The dimensionless bottom hole pressure can be obtained using the Stehfest numerical inversion method. The bi-logarithmic type curves for the trce-shaped fractal reservoirs are thus obtained. The pressure transient responses under different fractal factors are discussed. The factors with a primary effect on the inter-porosity flow regime include the initial branch number N, the length ratio α, and the branch angle θ. The diameter ratio β has a significant effect on the fracture radial flow, the inter-porosity and the total system radial flow regimes. The total branch level M of the network mainly influences the total system radial flow regime. The model presented in this paper provides a new methodology for analyzing and predicting the pressure dynamic characteristics of naturally fractured reservoirs.
  • Descripción: A transient flow model of tree-shaped fractal reservoirs is built by embedding a fracture network simulated by a tree-shaped fractal network into a matrix system. The model can be solved using the Laplace conversion method. The dimensionless bottom hole pressure can be obtained using the Stehfest numerical inversion method. The bi-logarithmic type curves for the trce-shaped fractal reservoirs are thus obtained. The pressure transient responses under different fractal factors are discussed. The factors with a primary effect on the inter-porosity flow regime include the initial branch number N, the length ratio α, and the branch angle θ. The diameter ratio β has a significant effect on the fracture radial flow, the inter-porosity and the total system radial flow regimes. The total branch level M of the network mainly influences the total system radial flow regime. The model presented in this paper provides a new methodology for analyzing and predicting the pressure dynamic characteristics of naturally fractured reservoirs.
  • Editor: Singapore: Elsevier Ltd
  • Idioma: Inglés
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