Lithologic Reservoirs ›› 2013, Vol. 25 ›› Issue (2): 95-99.doi: 10.3969/j.issn.1673-8926.2013.02.017

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Study on pressure gradient and producing degree of water flooding reserves in square inverted nine-spot well pattern

LI Biao， TANG Hai， LU Dongliang   

  1. College of Pertroleum Engineering， Southwest Petroleum University， Chengdu 610500， China
  • Online:2013-04-20 Published:2013-04-20

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Abstract:

According to Non-Darcy flow theory and potential superposition principle, this paper deduced pressure gradient distribution law at the normal production in square inverted nine-spot well pattern, and applied the result to the studies of effective injection-production system formation conditions and producing degree of water flooding reserves in square inverted nine-spot well pattern. Taking actual oilfield as an example, this paper studied the rule that producing degree of water flooding reserves changes with injection-production differential pressure variation, which can provide theory basis for adjustment well deployment in square inverted nine-spot well pattern.

Key words: vector well pattern, physical simulation, numerical simulation, well pattern optimization, heterogeneity

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