Study On Injection-production Composition Pattern Of Single Sand-body In Fine Potential Tapping Demonstration Area Of The Three Pubei Faults

81-92rank of Pubei three fault block reservoir development is "narrow, thin andscattered", and the reservoir permeability differences in the longitudinal and lateral. There is avariety of sedimentary microfacies in the reservoir. Subdivided sedimentary unit cannot meetthe needs of the fine adjustment. It needs base on26sedimentary units, eight kinds ofsedimentary microfacies to carry out a research into the single sand-body. According tosand-body genetic types, single sand-body is divided into five types include the polytectonicriver-channel superimposed type, branching-river channel type, single river-channel type,sheet sand type and lentoid sand type. According to different types of single sand-bodygeological and development characteristics, advancing the single sand-bodythree-dimensional exploration, further improving the reservoir producing extent, improvingthe efficiency of the oilfield development. The reservoir of polytectonic river-channelsuperimposed type, branching-river channel type and sheet sand type develop well. But thedevelopment of single river-channel type and lentoid sand type is poorer. The polytectonicriver-channel superimposed type, branching-river channel type and sheet sand type whoseremaining geological reserves more concentrated periods are the main object. Based onrecovery degree and accumulated injection-production, well group is divided into five typesof low-injection and low-production, low-injection and high-production, high-injection andlow-production, high-injection and high-production and injection-production balance, andidentify potential well group. On the one hand, it takes single sand-body as the basicadjustment unit, through the fine geologic research, fine injection-production layered, finethree-dimensional exploration, and quantify the potential distribution, to improvedevelopment effect and achieve control of inefficient circulation, increase the degree of thinpoor reservoirs. On the other hand, it can improve the effect of measures and the necessaryimplementation governance by optimizing the technology supporting. On the basis ofeffectively improve the recovery efficiency, further perfect fine thin narrow sand body oilfields for determining mining techniques.