Research on imperfect injection - production well pattern for strip - shaped small fault block reservoir with edge water

It is hard to develop complex small fault block reservoir with regular well pattern,which may result in rapid depletion of reservoir energy and low waterflood recovery factor,and restrict efficient development of this type of reservoirs.Irregular triangular pattern is commonly used for such reservoirs,and wells are placed subjectively and arbitrarily,the injection-production relationship cannot be established,and there has not been a methodology formed yet.In this research for strip-shaped small fault block reservoirs,numerical simulation method is employed to study reservoir development performance of different patterns based on the thought of achieving perfect injection-production relationship with imperfect pattern and with consideration of aquifer energy.Rational patterns of injection-production wells are proposed for such reservoirs,thus provided theory and method for developing similar reservoirs,and further enriched existing theory and method.