州16断块周期注水的技术应用及效果评价

Technology Application and Effect Evaluation of ZHOU 16 Block Cyclic Waterflooding

州16断块经过7年的开采,过了高产期后,断块从低含水期迅速上升至中含水期,断块产量迅速递减,注采矛盾突出,针对该情况开展周期注水实验,有效地降低了实验井区的含水上升率。在周期注水先期试验思路的基础上,从使用条件、注水方案、效果分析等方面进行了总结评价,可为后期在全断块进行推广应用提供参考经验。

After having been developed more than 7 years ,Zhou 16 fault block is not so productive any more ,and its water cut transforms quickly from medium to high ,thus the production declines rapidly .The contradiction between injection and production becomes serious .In view of this situation ,taking periodic water flooding experiment effectively reduces rising rate of water cut in tested well block .Beginning with the early test of water injection ,This article summarizes and evaluates from the application conditions ,water injection scheme and effect analysis so as to provide reference for popularization and application for the whole block later .