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Hydrophobically modified melamine-formaldehyde sponge used for conformance control and water shutoff during oil production
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2021-07-19 , DOI: 10.1002/app.51416 Wen Ou 1 , Xinjie Luo 1 , Yujun Feng 1
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2021-07-19 , DOI: 10.1002/app.51416 Wen Ou 1 , Xinjie Luo 1 , Yujun Feng 1
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Polymer or polymer gels have been widely used to control excessive water during oil production by homogenizing injection profile and reducing water cut in the produced fluids. However, the gels used are generally unable to selectively minimize water production, and face the challenge of syneresis of gels under high temperature and high salinity environment. In this work, melamine-formaldehyde sponge was modified with AlCl3 solution, rendering a transition from hydrophilic to hydrophobic state with a water contact angle of 130° on the surface of the modified product. Filtration results show that mineral oil and water can be selectively separated with the hydrophobically modified sponge powders. Simulated water shutoff experiments demonstrated the blockage efficiency against water was 30% higher than that against oil, and the oil production was increased 7.4% after blocking. The parallel profile control tests confirmed that the fraction flow of high permeable channel decreased about 75%, accompanied with 60% rise of oil recovery factor. These results indicated that such hydrophobic materials can significantly reduce excessive water production, and this work provided a new idea to offer a low-cost hydrophobic material for conformance control and water shutoff during oil production.
中文翻译：
疏水改性三聚氰胺-甲醛海绵用于采油过程中的一致性控制和断水
聚合物或聚合物凝胶已被广泛用于通过均质化注入剖面和减少采出液中的含水量来控制采油过程中的过量水。然而，所使用的凝胶通常无法选择性地减少产水量，并且面临着凝胶在高温高盐环境下发生脱水收缩的挑战。在这项工作中，三聚氰胺-甲醛海绵用 AlCl 3改性溶液，使改性产物表面从亲水状态转变为疏水状态，水接触角为 130°。过滤结果表明，疏水改性海绵粉可以选择性地分离矿物油和水。模拟堵水实验表明，水堵效率比堵油高30%，堵水后产油量提高7.4%。平行调剖试验证实，高渗透通道馏分流量下降约75%，采收率提高60%。这些结果表明，这种疏水材料可以显着减少过量产水，
更新日期：2021-09-09
中文翻译：
疏水改性三聚氰胺-甲醛海绵用于采油过程中的一致性控制和断水
聚合物或聚合物凝胶已被广泛用于通过均质化注入剖面和减少采出液中的含水量来控制采油过程中的过量水。然而，所使用的凝胶通常无法选择性地减少产水量，并且面临着凝胶在高温高盐环境下发生脱水收缩的挑战。在这项工作中，三聚氰胺-甲醛海绵用 AlCl 3改性溶液，使改性产物表面从亲水状态转变为疏水状态，水接触角为 130°。过滤结果表明，疏水改性海绵粉可以选择性地分离矿物油和水。模拟堵水实验表明，水堵效率比堵油高30%，堵水后产油量提高7.4%。平行调剖试验证实，高渗透通道馏分流量下降约75%，采收率提高60%。这些结果表明，这种疏水材料可以显着减少过量产水，
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