Seepage Numerical Model for Fractured Horizontal Well in Shale
Gas Reservoir

doi:10.11885/j.issn.1674-5086.2013.09.11.07

Abstract

Abstract:

After the hydraulic fracturing of horizontal wells，shale gas reservoir seepage areas show a complex fracture net- work
morphology，single well flow numerical model considering desorption-adsorption mechanism has a strong theoretical value and
practical significance for analyzing single well production factors. Based on Warren-Root dual media model guiding ideology，
matrix flow mathematical model and fracture flow mathematical model are established considering desorption-adsorption.
Methods of discrete differential equations is designed and IMPES seepage linear processing method is carried out，and finally
iterative simulation programming is realized through the Gauss-Seidel. Field applications，based on the results of the microseismic
for fractured horizontal wells in shale reservoir geological model was constructed，the established numerical model
can analyze the impact of pressure，gas adsorption，permeability，formation properties and other characteristics on production
parameters. The results are consistent with the law of shale gas production，so this simple model can effectively guide the field
of engineering design and dynamic analysis.

Key words: shale gas, horizontal well, pressing crack, numerical modeling, fracture block, dual media

Guo Xiaozhe1, Zhou Changsha2. Seepage Numerical Model for Fractured Horizontal Well in Shale
Gas Reservoir[J]. 西南石油大学学报(自然科学版), DOI: 10.11885/j.issn.1674-5086.2013.09.11.07.

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