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.
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佘跃惠,曾琦,董浩,等. 纳米材料改变岩石矿物润湿性的研究进展[J]. 科学技术与工程, 2021, 21(8): 2997-3005. She Yuehui, Zeng Qi, Dong Hao, et al. Development of nanomaterials changing rock mineral wettability[J]. Science Technology and Engineering,2021,21(8):2997-3005.