表面活性剂-聚合物组合用于生产井的选择性水关闭
Lyubov Magadova1, Mikhail Silin1, Vladimir Gubanov1
1Department of Technology of Chemical Substances for the Oil and Gas Industry of Gubkin University, World-Class Research Center «Efficient Development of the Global Liquid Hydrocarbon Reserves», National University of Oil and Gas (Gubkin University), 119991 Moscow, Russia.
Gels (Basel, Switzerland)
|February 23, 2024
概括
这项研究引入了一种新的表面活性剂-聚合物成分,使用水解聚烯 (HPAN) 来有效地关闭生产井中的水. 开发的反向乳液技术可以防止过早的凝,并选择性地降低水和区域的透性,即使在高盐度条件下.
科学领域:
- 石油工程是石油工程中的一个.
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
背景情况:
- 生产井的高水切割率 (≥90%) 需要改进的水关闭技术.
- 现有的物理化学方法包括选择性和非选择性隔离技术.
- 挑战包括过早凝结和高度环境中的有效处理.
研究的目的:
- 为了研究水解聚烯 (HPAN) 作为凝形成试剂的水关闭.
- 开发和评估一种选择性表面活性剂-聚合物逆变乳液,用于控制水流量.
- 解决过早凝的问题,并使远离井口的处理成为可能.
主要方法:
- 对凝形成的最低有效HPAN度 (≥5.0重量%) 的实验性确定.
- 与交联HPAN溶液,形成结构凝,使用Sydansk方法进行分类.
- 研究温度,交叉连接剂含量和矿化水对凝结构和体积的影响.
- 在水库模型上进行了风学研究,热稳定性测试和过试验.
主要成果:
- 最佳的HPAN与交叉连接器的比率为5: 1,产生轻微可变形的,不流动的凝 (锡丹斯克代码"H").
- 矿化水中增加的HPAN度和离子度增强了凝体积和结构.
- 过试验显示残留电阻系数比为0.08,表明水和区 (18.04) 与油和区 (1.49) 的高选择性.
- 倒置乳液配方防止过早凝结,并允许远程处理.
结论:
- 开发的基于HPAN的逆变乳液是生产井的有效和选择性水关闭解决方案.
- 该技术克服了现有的HPAN方法的局限性,特别是过早凝和处理距离.
- 该组合适用于具有挑战性的条件,包括高盐度,水平井和高达80°C的温度.
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