纳米材料改变岩石矿物润湿性的研究进展

在油气开采过程中,储层岩石润湿性变化能显著提高油气产量,因而改变润湿性技术具有很大的发展潜力.将储集层岩石润湿状态转变为亲水状态的新方法和新化学剂引起了石油研究人员的高度重视.纳米材料在其他科学领域已经有较广泛的应用,但其在石油开采中仍处在探索发展阶段.综述不同种类纳米材料在改变油气藏岩石矿物润湿性方面的研究进展,同时讨论两种岩石矿物类型(灰岩和砂岩),总结纳米粒子的种类、尺寸等因素对纳米材料性能的影响.重点介绍测量润湿性变化的两种方法,即动态测量法和静态测量法.通过将纳米材料和其他化学剂相组合,讨论不同类型流体和不同注入过程的岩心驱替试验.展望纳米材料在提高油气最终采收率方面的应用前景.

Development of nanomaterials changing rock mineral wettability

Abstract:In the process of oil and gas exploitation, the change of reservoir rock wettability can significantly improve oil and gas production, so the technology of changing wettability has great potential for development. New methods and new chemicals for changing the wetted state of the reservoir rock to a hydrophilic state have attracted great attention from petroleum researchers. Nanomaterials have been widely used in other scientific fields.However, it is still in the stage of exploration and development in oil exploration.This article reviews the research progress of different types of nanoparticles in changing the wettability of oil and gas reservoir rocks and minerals. The two rock types (carbonate and sandstone) and the effects of the types and sizes of nanoparticles on the properties of nanomaterials are also summarized. In addition, two methods for measuring the change in wettability are introduced, namely: dynamic measurement method and static measurement method.Finally, by combining nanomaterials with other chemicals, core displacement experiments with different types of fluids and different injection processes are discussed. Prospects for the application prospects of nanomaterials in improving the ultimate recovery of oil and gas.