Abstract
Through decades of development most of oilfields in china, has now entered high water cut and recovery degree are the “twin” stage, the reservoir physical property, well pattern evolution and the influence of injection-production dynamic, “twin” phase residual oil show the “overall scattered, local enrichment” distribution characteristics, enrichment of its dispersion characteristics not only show the macro distribution, injection-production control area at the same time also show the level of pore microscopic dispersion and enrichment conditions. The key to the study of residual oil in “double high” stage and the implementation of or lies in how to understand the well pattern injection and production seepage field under the control of geological factors.
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