The discussion of Well Selection and Layer Selection Method on Polymer Flooding Fracturing in Class II Reservoir

Abstract

The main purpose of oil well fracturing is to alleviate the intra-layer contradiction and tap the remaining oil at the top of the thick reservoir for the primary reservoir. Aiming the problem such as long polymer injection interval, several layers, serious heterogeneity in plane and vertical in Class II reservoir, the main purpose of fracturing is to alleviate the plane and interlayer contradiction and tap the remaining oil at the edge of the buried river channel and at the position of inter-river variation. Because of the differences in geological characteristics and fracturing purposes, the method of selecting wells and layers for the primary reservoir has some inadaptability in the application of the Class II reservoir. In order to improve the fracturing effect of polymer flooding in Class II reservoir, it is necessary to explore the method of well selection and layer selection, in order to suitable for polymer flooding in Class II reservoir.