The Comprehensive Description And Potential Seeking Directon Of The Residul Oil After The Polymer Flooding In Pu 1 Member

According to the theory of high-resolution sequence stratigraphy we define the 5th interface in North Saertu Development area, by reserching the main purpose layer establishing a comparison frame of the forth sequence in beierxi. In the meandering bar we further identify single bar, intermate the morphology, occurrence, distribution and identification characteristics of the four interface, thereby achieve the quantitative characterization. According to the new ideas of the formation of remaining oil in thick oil layers after polymer flooding, we enhance the water injection against the direction of side aggradation, control the water injection along the direction of mainstream line, consequently excavate the remaining oil against the direction of side aggradation .