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Journal of Porous Media
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ISSN Imprimir: 1091-028X
ISSN En Línea: 1934-0508

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Journal of Porous Media

DOI: 10.1615/JPorMedia.2018028663
pages 1283-1305

MODELING THE NONLINEAR FLOW FOR A MULTIPLE-FRACTURED HORIZONTAL WELL WITH MULTIPLE FINITE-CONDUCTIVITY FRACTURES IN TRIPLE MEDIA CARBONATE RESERVOIR

Yong Wang
School of Sciences, Southwest Petroleum University, Chengdu, Sichuan 610500, China; State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China
Chen Zhang
School of Sciences, Southwest Petroleum University, Chengdu, Sichuan 610500, China
Tao Chen
School of Sciences, Southwest Petroleum University, Chengdu, Sichuan 610500, China
Xin Ma
State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China

SINOPSIS

Because of the characteristics of carbonate reservoirs, horizontal well and acid fracturing have become a key technology for efficiently developing carbonate reservoirs. Establishing corresponding mathematical models and analyzing transient pressure behaviors of this type of well reservoir configuration can provide a better understanding of fluid flow patterns in formation as well as estimations of important parameters. A coupling mathematical model for a fractured horizontal well in a triple-media carbonate reservoir by conceptualizing vugs as spherical shapes is presented in this article, in which the finite conductivity of the acid fractures is taken into account. A semianalytical solution is obtained in the Laplace domain by using source function theory, Laplace transformation, discretization of fracture, and superposition principle. Analysis of transient pressure responses indicates that several characteristic flow periods of fractured horizontal wells in triple-media carbonate reservoirs can be identified. Parametric analysis shows that fracture half-length, fracture number, and fracture spacing can significantly influence the transient pressure responses of fractured horizontal wells in triple-media carbonate reservoirs. The model presented in this article can be applied to obtain important parameters pertinent to reservoir or fracture by type-curve matching, and it can also provide useful information for optimizing fracture parameters.


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