Qing Five Merchant Reservoir Secondary Development Research And Application

Qing five piece put into scale development in 1988,1989 into water injection development,with the extension of time,serious oil layer being water flooding,remaining oil dispersion,oil production is declining in recent years,oil production rate fell to 0.32%.Through the analysis of fault block there are the following problems: low utilization rate of water injection,improve water flood swept volume is difficult;The watered-out reservoirs in serious;Uneven suction conditions;Local imperfect injection-production well pattern.In the case study,the overall control of the two development,subdivision of strata,planar reconstruction,three-dimensional optimization,deep flooding,combined with two or three technical solutions to twenty-four character principle as the theoretical foundation,supporting the formation of layers and well pattern optimization technology,dominant flow channel identification technology,deep flooding etc.in the 5 block.The clear distribution of remaining oil on the basis of the proposed implementation of the multi development plan is mainly on the " hierarchical partition " principle,namely,the plane is divided into three areas: the edge of the water balance area,flooding wells,d3 perfect injection production well network area is divided into three sections;vertical d2??d2?.??d3,according to the different partition segment Different problems take different measures,sufficient reserves.For better efficiency has been achieved after the implementation of flooding in four well groups,block wells increased the number of 8,oil production increased 44.6 tons.To compare the technique with the same technology at home and abroad,has reached the advanced level of similar research in the study.The results of the development of complex fault block reservoir has a certain promotion significance,provides the technical support for Xinglongtai oil production plant of 8240×104t reserves of the complex fault block reservoir efficient development.