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在低透性砂岩储中优化洪水参数和增强效率的开发
Mengke Xin1,2, Dingxue Zhang1,2, Yan Zhang1
1School of Petroleum Engineering, Yangtze University, Wuhan, Hubei, China.
PloS one
|August 29, 2025
概括
这项研究优化了纳米乳液注入低透性储的方法. 使用纳米二氧化 (SiO2) 乳液进行细分注入,通过改变湿度和防止堵塞,显著改善了石油回收和田间生产.
科学领域:
- 石油工程
- 水库工程
- 在石油回收中使用纳米技术
背景情况:
- 由于质量不佳和异质性,低透度的水库在洪水中存在挑战,导致排水效率低.
- 纳米乳液用于提高扫效率,改变这些具有挑战性的水库的湿度.
- 之前的实地应用显示无效,需要进行实验室研究以优化纳米乳液性能.
研究的目的:
- 确定影响低透度储中纳米乳液注射性能差的因素.
- 通过改造的纳米二氧化 (SiO2) 乳液来优化注入参数和增强石油回收的方法.
- 通过实地应用验证实验室发现并评估生产改进.
主要方法:
- 在实验室中使用本地水库核进行了核心移位实验.
- 分析现场操作数据以优化注射参数 (速率,度,体积).
- 实施和评估用水间隔器和单注射的细分注射策略.
主要成果:
- 修改后的纳米SiO2乳液颗粒 (26.01 nm) 比储孔尺寸小.
- 通过接触角测量,从油湿 (132.9°) 转变为水湿 (53.6°).
- 在实验室测试中,最佳参数和双细分注射提高了油的回收率18.83%.
- 实地试验显示,分段注射使每日液体产量增加了82. 5%,每日油产量增加了93%.
结论:
- 分段注射改造的纳米SiO2乳液有效地减轻了堵塞并增强了深层水库的透.
- 使用纳米乳液的优化"性能参数模式"策略表明了改善石油回收的协同机制.
- 这项研究提供了一种使用纳米技术高效开发低透性水库的验证方法.
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