海上疏松砂岩压裂防砂工艺的改进

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Improvement of fracture sand control of loose sandstone in offshore oilfields

摘要: 针对埕岛油田馆陶组疏松砂岩油井斜度大、地层亏空严重、压裂防砂易造成砂堵等难题,通过海水预处理和阶梯降测试,判断地层亏空、裂缝发育情况,采用支撑剂段塞、调整施工参数、改进充填工具等措施,避免了砂堵的发生。

Abstract: The angle of wells in Guantao Formation in Chengdao Oilfield is very high, and the reservoir is seriously depleted, so it's very easy to cause sand plug and other problems when do facture treatment. Judging the depletion degree and facture growth through sea water pretreatment and step drawdown test, use proppant to do slug, adjust treatment parameters and improve packing tools to avoid sand plug.