Ethoxylated molybdenum disulphide based nanofluid for enhanced oil recovery  

作　　者：Infant Raj Zhuo Lu Ji-Rui Hou Yu-Chen Wen Li-Xiao Xiao 

机构地区：[1]Unconventional Petroleum Research Institute,China University of Petroleum(Beijing),Beijing,102249,China

出　　处：《Petroleum Science》2024年第5期3417-3427,共11页石油科学（英文版）

基　　金：funded by the National Natural Science Foundation of China (No. 52174046)。

摘　　要：Despite advances in renewable energy sources, the world's current infrastructure and consumption patterns still heavily depend on crude oil. Enhanced oil recovery(EOR) is a crucial method for significantly increasing the amount of crude oil extracted from mature and declining oil fields. Nanomaterials have shown great potential in improving EOR methods due to their unique properties, such as high surface area, tunable surface chemistry, and the ability to interact at the molecular level with fluids and rock surfaces. This study examines the potential use of incorporating ethoxylated molybdenum disulfide with a unique three-dimensional flower-like morphology for overcoming the challenges associated with oil recovery from reservoirs characterized by complex pore structures and low permeability. The synthesized nanomaterial features a chemical composition that encompasses a polar ethoxy group linking molybdenum disulfide nanosheets and an alkylamine chain. The ethoxy group promotes interactions with water molecules through hydrogen bonding and electrostatic forces, disrupting the cohesive forces among water molecules and reduction surface tension at the oil-water interface. As a result, the nanomaterial achieves an ultra-low interfacial tension of 10^(-3) mN/m. Core flooding experiments demonstrate a significant oil recovery of approximately 70% at a concentration as low as 50 ppm. This research paves the way for the design and synthesis of advanced extended surfactant-like nanomaterials,offering a promising avenue for enhancing oil recovery efficiency.

关 键 词：Molybdenum disulfide NANOFLUID Flow in porous media Core flooding Interfacial tension 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]