三相泡沫调驱体系提高蒸汽驱采收率
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中国石油大学华东石油工程学院

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TE 357

基金项目:

国家重点研发计划“稠油化学复合冷采基础研究与工业示范”(项目编号2018YFA0702400),山东省自然科学基金项目“纳米颗粒稳定乳状液在油藏孔隙介质中形成条件及流度控制机理研究”(项目编号ZR2019MEE085)。


Three-phase foam profile control and flooding system to improve steam flooding oil recovery
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College of Petroleum Engineering,Petroleum University of China

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    摘要:

    由于蒸汽流度低和地层非均质性,蒸汽驱常发生蒸汽超覆现象和汽窜现象,严重影响最终采收率。本文以磺酸盐表面活性剂ZAS、聚醚磺酸盐表面活性剂ZCP-1和纳米硅酸盐颗粒NS复配研制出耐温300℃的三相泡沫调驱体系,并通过实验评价其封堵性能和驱油性能。结果表明,该三相泡沫体系泡沫性能优异,300℃热老化处理后性能稳定;在1000~4000 mD渗透率范围内阻力因子均大于30,随渗透率增加封堵能力增强,能有效封堵高渗通道;渗透率级差为1:2的非均质条件下可有效改善吸汽剖面,大幅提高低渗模型采收率,综合采收率提高17.93%,具有良好的提高蒸汽驱采收率潜力。

    Abstract:

    Due to low steam fluidity and formation heterogeneity, steam overriding and steam channeling often occur in steam flooding, which seriously affect the final recovery factor. This paper used sulfonate surfactant ZAS, polyether sulfonate surfactant ZCP-1 and nanoparticle NS to develop a three-phase foam profile control and flooding system with a temperature resistance of 300℃. Then evaluated its plugging performance and oil displacement performance through experiments . The results show that the three-phase foam system had excellent foam performance, and it was stable after heat aging at 300°C. the resistance factor of foam was greater than 30 within the permeability range of 1000~4000 mD, meantime, its blocking ability increased with the increase in permeability. Under the heterogeneous condition with a permeability difference of 1:2, it can improve the total oil recovery by 17.93%, as a result of adjusting the steam absorption profile and increasing the oil recovery of the low-permeability model. The three-phase foam system has good potential to improve the oil recovery of steam flooding

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  • 收稿日期:2021-03-09
  • 最后修改日期:2021-05-17
  • 录用日期:2021-08-23
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