清洁压裂液破胶液驱油体系实验研究
发布时间：2019-06-24 22:42
【摘要】：文中针对清洁压裂液返排液难处理的问题,对清洁压裂液返排液重复利用技术进行了研究。在评价破胶液基本性质的基础上,对清洁压裂液破胶液体系降低界面张力、乳化能力、改变岩石润湿及提高采收率等性能进行了评价。结果表明:在某低渗油藏条件下,该体系能有效降低界面张力至10~(-3)~10~(-2)m N/m数量级;该体系乳化能力较好,润湿性能优良,其动态饱和吸附量为8.09 mg/g,且水驱后动态滞留量仅相当于动态饱和吸附量的1/4~1/3。室内岩心模拟驱油实验表明,该体系在最优注入方案条件下实现采收率增值10.04%,说明该体系能够满足低渗油藏压裂后进一步提高采收率的要求。
[Abstract]:In order to solve the problem that it is difficult to deal with the backflow of clean fracturing fluid, the reuse technology of clean fracturing fluid is studied in this paper. On the basis of evaluating the basic properties of gel breaking fluid, the properties of clean fracturing fluid system, such as reducing interfacial tension, emulsification ability, changing rock wetting and improving oil recovery, were evaluated. The results show that under the condition of a low permeability reservoir, the interfacial tension can be effectively reduced to the order of 10 ~ (- 3) ~ 10 ~ (- 2) N 鈮，
本文编号：2505420
[Abstract]:In order to solve the problem that it is difficult to deal with the backflow of clean fracturing fluid, the reuse technology of clean fracturing fluid is studied in this paper. On the basis of evaluating the basic properties of gel breaking fluid, the properties of clean fracturing fluid system, such as reducing interfacial tension, emulsification ability, changing rock wetting and improving oil recovery, were evaluated. The results show that under the condition of a low permeability reservoir, the interfacial tension can be effectively reduced to the order of 10 ~ (- 3) ~ 10 ~ (- 2) N 鈮，
本文编号：2505420
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