RESEARCH AND APPLICATION OF WATER CHANNELING SEALING TECHNOLOGY
2006
In high water cut period, well condition of Zhongyuan Oilfield is poor, such as casing failure above cement return height in oil wells and difficult-to-block water channels in some oil wells. In order to resolve the problems, a new kind of compound lost circulation additive with high strength is introduced. The plugging agent has the features of good stability, controllable reaction time, perfect blocking performance, high temperature resistance, wide thermal adaptation range, salt resistance and thinning resistance. Its field practice reveals its strong effectiveness in treating casing damage and water channels and in available reserve regaining.
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