原油中以沥青质为主的活性物质吸附在油水界面形成牢固的界面膜从而抑制乳化液滴聚结是W/O型原油乳状液稳定存在的重要原因，如何使沥青质界面膜破裂是原油破乳研究的重点和难点。本项目针对沥青质界面膜上出现的介观微米级褶皱结构，提出利用褶皱位点实现界面膜破裂并强化破乳的思路。通过研究褶皱的形貌结构、化学组成和力学性能，分析影响褶皱形成的内外因素，揭示沥青质界面膜上介尺度褶皱的形成机制；从乳化温度、破乳添加剂与界面扰动等多个方面探究促进褶皱开裂的可行方法，明晰褶皱的开裂规律；从单液滴破裂、双液滴聚并和液滴群迁并等多个尺度考察褶皱开裂的位置、形状和开度对乳化液滴聚结速率和效率的影响，揭示褶皱开裂诱导W/O型乳化液滴聚结的过程和机制。研究结果将有助于阐明褶皱结构对沥青质界面膜破裂的关键作用，为建立以褶皱位点为靶点、以促进褶皱开裂为手段的原油乳状液靶向式精准破乳策略提供科学依据。

A major reason for the stability of W/O crude oil emulsion is the adsorption of asphaltene-dominant active substances on the oil-water interface forming a rigid interfacial film, thereby prohibiting the coalescence of emulsion droplets. How to break the asphaltene interfacial film is crucial for emulsion destabilization but difficult to achieve. Focusing on the mesoscopic micron-sized wrinkle structures on the asphaltene film, the present work proposes to utilize the film wrinkles to achieve film breakage and thus emulsion destabilization. The morphology, chemical composition and mechanical property of the wrinkles will be investigated and the internal and external factors influencing the wrinkle formation will be analyzed, to reveal the mechanism of the formation of wrinkle structures on the asphaltene film. The feasible methods for cracking the wrinkles will be tested in terms of emulsification temperature, demulsifier and interface disturbance. The mechanism of wrinkle-cracking will be discussed. The effects of crack position, shape and degree on the rate and efficiency of emulsion droplet coalescence will be studied at different levels, i.e., the rupture of single droplet, the coalescence of two droplets, and the coalescence of multiple droplets. The wrinkle-induced coalescence process will be monitored to delineate the underlying mechanism. This study can be conducive to understanding the important role of wrinkle structures on the breakage of asphaltene interfacial film. The results can provide a scientific basis for a novel strategy of crude oil demulsification by targeting the wrinkle structures on the interfacial film.