Study On The EOR Method And Exploit Potentialities About Sazhong Transitional Zone

As the extension of the water flooding time, the production of the oil well has beendeclined, followed decades of development transitional zone exposed many problems,including the unadoptable original well nets, the low degree of water flooding control, thelow oil production speed, the unbalanced mining strength and so on. Therefore the deeplyanalyzes the main inconsistencies transitional zone is needed, to adjust the direction of futuretapping and improve the recovery method.Through recognized of sazhong transitional zone, on the basis of the reservoirdescription, the future reservoir sedimentary characteristics and oil reservoir developmentcharacteristics are systematically studied in this article. Through the X-ray diffractiondetection, scanning electron microscope and chip technology, the system of the reservoirphysical properties has been studied; by using the ground oil property material, the pressureof coring material and airtight sampling material, the oil property characteristics anddistribution can be described. Variety of methods has been used for pure oil, oil and water andtree outside enlarge potential; through the natural core laboratory displacement experiment,the paper studied the feasibility of reservoir tertiary oil recovery.The reasonable way to developed different oil reservoir has been given in this paper, byusing physical simulation method the EOR of the transitional zone has been forecasted after acomprehensive adjustment. The ASP flooding is situ for the secondary reservoir and the thirdlevel formation situ to polymer surfactant.