二氧化碳压裂液增稠剂研究进展

Research Progress of Thickener for Carbon Dioxide Fracturing Fluid

闫若勤 赵明伟 李阳 程云龙 郭旭 戴彩丽

YAN Ruoqin ZHAO Mingwei LI Yang CHENG Yunlong GUO Xu DAI Caili

传统水基压裂液易对储层造成水敏伤害，二氧化碳压裂液技术成为非常规油气开发研究的新方向。但是由于纯二氧化碳压裂液黏度较低，严重影响了其压裂效果，因此寻找合适的增稠剂来提高二氧化碳压裂液的黏度势在必行。通过文献调研，综述了表面活性剂、碳氢聚合物、含氟聚合物及硅氧烷聚合物4 类二氧化碳增稠剂的结构特征和性能特点，并从增稠机理和增稠性能两方面概述了目前二氧化碳压裂液增稠剂的研究现状。最后总结了各类增稠剂的特点并对以后的研究方向提出了建议。

For the traditional water-based fracturing fluid，it is easy to cause water-sensitive damage to reservoir. Carbon dioxide fracturing fluid has become a new direction of unconventional oil and gas development research due to its non-aqueous components. However，due to the low viscosity of pure carbon dioxide fracturing fluid，which seriously affects the fracturing effect，it is imperative to find a suitable thickener to improve the viscosity of carbon dioxide fracturing fluid. Based on the literature research， the structure and performance characteristics of four kinds of carbon dioxide thickeners including surfactant，hydrocarbon polymer， fluoropolymer and siloxane polymer were reviewed，and the current research status of carbon dioxide fracturing fluid thickening from two aspects of thickening mechanism and thickening performance was summarized. Finally，the characteristics of various thickeners were summarized and suggestions for future research directions were put forward.

10.19346/j.cnki.1000-4092.2022.02.030