The Thin And Poor Pay Zones Producing Limitation And Rational Injection And Mining Methods On Xing-six Blocks

Among current oil in place in China, a large part of which is in poor and thin reservoir, whose natural flow potential is very low. Besides low natural permeability and poor physical property of reservoir, at later producing stage of oilfield, the formation generates irreversible plastic deformation due to the deep drop of formation pressure, which lowers the permeability; these reservoirs have small effective thickness, severe heterogeneity in physical properties, and discontinuous plane distribution, which makes the effective development in poor and thin reservoir harder. In this paper, taking Xing-six area of Daqing oilfield as the object, Study the effect factor of the thin difference reservoir. and to determine the reasonable injection production method of thin difference layer in Xing-six poor and thin layer as well, through laboratory experience.This article is based on the research of forefathers and a large number of literature had been studied. The regular physical property test of out-surface core sample and the actuating pressure test by the stable method which has been used to find the create critical value of low permeable layer. Also use the micro visualization displace experiment of core to study the effect of the residual oil distribution of the thin layer on the use of the oil is studied; The simulation study on poor thin layers and intraformational heterogeneity in thin layer which have effect on fruitage through artificial casting core. Including the study on discontinuous and argillaceous thin interbedded model and the distribution of sand body superimposed with phase change model. To find out the influence factors of different injection production mode of thin and poor reservoir water flooding effect Thereby we get the water flooding regulation in bad and thin layer. To provide some certain theoretical basis For effective development of poor thin reservoir.