埕东油田西区南块整体堵水中堵剂的研究和应用

A STUDY AND APPLICATION OF PLUGGING AGENTS IN THE BLOCK WIDE IN WATERSHUTOFF SOUTHWEST CHENGDONG OILFIELD

本文介绍了埕东油田西区南块整体堵水中堵剂的研究和应用,包括对单液法铬冻胶的评价和改进、沉淀型双液法堵剂的筛选、将铬冻胶改为双液法堵剂、锆冻胶的引进和堵漏剂的使用等。在试验期间按堵水方案向区块投入上述各类堵剂11267m^3,使区块的年含水量控制在2%以下,增产原油29600t。

This paper introduces the results of study and application in block wide watershutoff southwest chengdong oilfield, including the evaluation and improvement of chromium gel used in single fluid method, screening of the precipitatedtype plugging agent used in double fluid method, changing the chromium gel into a plugging agent which can be used in double fluid method, introducing the chrconium gel and using leak plugging agent etc. According to the programme of watershutoff,11267m^3 of above-mentione different plugging agents have been put into formation .During the test period, the annual increasing of water cut has been controlled to a level of less than 2% and increased of oil production has reached 3×l0~4t.