Research Progress on Functionalization Nanocarbons for Enhanced Oil Recovery
Owing to their amphiphilic,and high aspect ratio,functionalization nanocarbons display multifaceted properties of surfactant,molecular film,colloid,liquid crystal molecule and polymer,stimulating their unique advantages and application po-tential application in enhanced oil recovery.This paper summarizes the common and unique characteristics of the structures and properties of the nanocarbons composing of 1D carbon nanotube and 2D graphene,the preparation methods,and their function-alization routes.The lipophilic-hydrophilic tailoring modification for nanocarbons on harsh reservoir temperature and salinity is proposed.Guided by the universal problem of low sweep efficiency and low micro-displacement efficiency of water flooding reservoirs,the absorption and self-assembly mechanisms of functionalization nanocarbons at water/oil and water/rock interfaces are analyzed,and multi-dimensional characterizations and information-based physical simulations of functionalization nanocar-bons are summarized.Based on the nano-scale molecular and cross-scale characteristics and water/oil/rock interface effects,the coupled enhanced oil recovery mechanisms of functionalization nanocarbons on enhancing sweep volume and improving displacement efficiency are elucidated.The papers ends with a critical and perspective outline on the existing problems in the large-scale application of functionalization nanocarbons and their route to the low-carbon cost for enhanced oil recovery.
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维普
