Study on Reasonable Spacing Between Injection and Production Wells#br#
Considering Fracturing in Low Permeability Reservoirs

doi:10.11885/j.issn.1674-5086.2013.10.28.03

Abstract

Abstract:

Based on the seepage theory of point sources and sinks，the pressure gradient distribution equation between injection
and production wells considering fracturing in low permeability reservoirs is derived. Combined with the correlated equation
between threshold pressure gradient and permeability，the computational method of reasonable spacing is proposed，and influencing
factors of pressure gradient between injector and fractured producer are analyzed with a case of low permeability
reservoir. Here，the theoretical chart of reasonable spacing is obtained，which verifies the reliability of this method. Results
demonstrate that there is a reasonable spacing under the condition of a certain reservoir permeability，injector-producer pressure
difference and the fracture length，and the reasonable spacing increases with the increase of above three parameters. Besides，
stimulation measures，like fracturing，can do favor to build the effective displacement pressure system，which could greatly
improve reasonable spacing. In conclusion，this pressure gradient distribution equation can accurately reflect the displacement
pressure system of real formation，and the results have certain practical significance for the reasonable development of low
permeability reservoirs.

Key words: low permeability reservoir；fractured producer；pressure gradient；injection &, production well；reasonable spacing

CLC Number:

TE348

Su Yuliang1, Ren Long1*, Zhao Guangyuan2, Zhan Shiyuan1, Meng Fankun1. Study on Reasonable Spacing Between Injection and Production Wells#br# Considering Fracturing in Low Permeability Reservoirs[J]. 西南石油大学学报(自然科学版), DOI: 10.11885/j.issn.1674-5086.2013.10.28.03.

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Study on Reasonable Spacing Between Injection and Production Wells#br# Considering Fracturing in Low Permeability Reservoirs

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