Researches on Fluid Flow Features and Water Flooding Suitability in#br#
Network Fractured Well

doi:10.11885/j.issn.1674-5086.2013.06.23.30

Abstract

Abstract:

The single well productivity of network fractured well can increase tremendously than that of conventional fractured
well in tight oil reservoirs in Ordos Basin. However，due to the low pressure coefficient，the development efficiency depending
on natural energy is not very good. Therefore，exploration on water flooding network fractured well is of significance. Based
on the characteristics of complex fracture network，the fracture network numerical simulation model is established to analyze
the fluid flow features in vertical network fractured well. Taking rectangular well pattern as example，stimulation mechanism
for vertical network fractured well is studied on the condition of water flooding well pattern，and the water flooding suitability
is explored. Results demonstrate that fracture network increases the degree of producing reserves，enlarges the sweep volume
on the side of vertical wall of fractures and improves the sweep efficiency between injection and production well. Due to
the “shortest flowing distance”，production well′s water cut increasing rate in fracture network increases fast after water
breakthrough. Case analysis is made on the vertical network fractured well in typical tight oil reservoir of Changqing oilfield.
Furthermore，the optimized well pattern for network fractured water flooding is designed and discussed.

Key words: tight oil, network fracturing, fracture network, fluid flow features, water flooding suitability

CLC Number:

TE349

Su Yuliang1*, Wang Wendong1, Zhao Guangyuan2, Yuan Bin3, Ren Long1. Researches on Fluid Flow Features and Water Flooding Suitability in#br# Network Fractured Well[J]. 西南石油大学学报(自然科学版), DOI: 10.11885/j.issn.1674-5086.2013.06.23.30.

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Researches on Fluid Flow Features and Water Flooding Suitability in#br# Network Fractured Well

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