Fine dissection of meandering river sand bodies under dense well nets

The main oil layer of Grape Flower in X Oilfield has entered the late stage high-extra-high water cut, and remaining distribution is uneven, so as to ensure development effect purpose block. Based on theory fine sedimentology, sedimentation characteristics PІ1 1 PІ2 2 deposition time units were studied. Combined with sedimentary logging data meandering river delta, facies model was classified detail established. Eleven microfacies subfacies delta shunt plain identified. microphase layout maps drawn. According conventional flooded interpretation data, four flooding histograms plotted obtain residual law. research results provide theoretical support for later adjustment.