基于精细地质模型的大型压裂裂缝参数优化

doi:10.11743/ogg20130614

Abstract

Abstract: The key geological factors determining fracturing effect in north Z23 ultra-low permeability reservoir are analyzed based on the fine geological model of reservoir established by using the Petrel software.According to the key geolo-gical factors(reservoir thickness,permeability),the target layers of sand unit 1,2 and 3 are classified into four types.Fracturing parameters of eight reservoir types are optimized by using numerical simulation and ENPV methods based on the fine geological model.The results show that the fracturing parameters vary greatly for reservoirs with intense heterogeneity.To obtain ideal productivity,long fractures are needed for the low permeability reservoir,while fractures with high flow conductivity is needed in reservoirs with relative high permeability.Field test shows that the hydraulic fracturing with fracture parameters optimized by using this method is effective.

Key words: large hydraulic fracturing, fracture parameter optimization, ENPV, fine geological model of reservoirs, ultra-low permeability reservoir

CLC Number:

TE122.2

Gou Bo, Guo Jianchun. Fracture parameter optimization of large hydraulic fracturing based on the fine geological model[J]. Oil & Gas Geology, 2013, 34(6): 809-815.

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Fracture parameter optimization of large hydraulic fracturing based on the fine geological model

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