Study Of The Remaining Oil And Integrated Enhanced Methods For Polymer Flooding At The Late Development Period

Along with the expanding of polymer flooding industries, the following improving technologies in different development phases of polymer flooding are paid more and more attention .The improving technique of the whole processes has been the main point of the polymer flooding exploitation.How to improve the polymer effection and enhance the finally recovery ratio and slow down the rising speed of water content and increase the amount of oil in phase is a main research direction of polymer flooding. Daqing oil-field follows the big direction adjustment in the whole polymer flooding exploitation processes. Particularly the measurable desceiption of remaining oil is not thorough. In order to further develop the enhanced oil recovery of remaining oil , so this paper selects a zones in the south area of Saertu oil-field to make studies on the distribution character of remaining oil and integrated enhanced methods for polymer flooding at the late development period. Using reservoir simulation, well logging data of wells, informations of sealing core drilling wells and the careful research findings of geology, Analyzing the macroscopic distribution character of remaining oil in plane and vertical and the interior distribution regularity in sedimentary unit. Based on this, the main technology of integrative enhanced oil recovery is given here.It is very significant for oil-field developing in improving the polymer effection and enhancing the finally recovery ratio and slowing down the rising speed of water content and increasing the amount of oil in phase. Also will indicate the research way of thinking and direction for the other, provide the technique support and experience.