The Research Of Tracking And Adjustment Of The Type Ⅱ Lyer’s Polymer Flooding In Sazhong Oil Field

Since Sazhong oil field in1996from the industrialized polymer injection, reserves potential relatively good Portuguese Group I oil reservoir conditions gradually reduced, it is difficult to meet the production demand a lot, so the type II layer polymer flooding is the dominant means to ensure oil production scale. Compared with the type II layer and the Portuguese group I of main reservoir, channel sand thickness thin, low permeability, narrow channel sand scale, sand body continuity is poor, dynamic analysis method of group I of the main Portuguese polymer flooding, has not well adapted to the analysis of the type II layer of reservoirs, by researching of the type II layer polymer flooding effect influence factors and dynamic response characteristics, and analysis of existing problems, has gradually formed谈the type II layer polymer flooding of reservoir dynamic analysis method and the adjustment technology,But at present, in the oil field development zone has entered extra high water cut period, the existence of water and flooding polymer, factors affecting development of evaluation index is also more and more, these factors are small, there are light weight. The personalized design of injection parameters of polymer injection scheme, and t the type II polymer flooding in the process of adjustment, the method of qualitative analysis, it is necessary to improve and optimize the oilfield development index evaluation method, and gives the optimization design based on quantitative analysis.In this paper, using statistical analysis method, comprehensive static data, by cluster analysis method of well group classification of a single well, using regression analysis, the realization of the type II of polymer flooding wells personalized design scheme, using principal component analysis and factor analysis, statistical analysis of different polymer injection stage effect of polymer injection to achieve two reservoir, well group classification method of innovation by static based; presented to connect the main development should be supplemented by the principle of well design; through multiple regression to establish different types of wells in polymer flooding effect evaluation system; optimization design of the measures of different types of oil and water wells. The statistics can realize collection, analysis, interpretation and presentation of data process, obtain the regularity knowledge from the known information, can realize the quantitative point view to research and analy the geological development issues.