二氧化碳压裂液增稠剂研究进展
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1非常规油气开发教育部重点实验室;2山东省油田化学重点实验室

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TE39?

基金项目:

国家自然科学基金项目(面上项目,重点项目,重大项目)(项目编号:51834010),国家重点基础研究发展计划(973计划)(项目编号:2019YFA0708700)


Research Progress of Thickener for Carbon Dioxide Fracturing Fluid
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1 Key Laboratory of the Ministry of Education of Unconventional Oil and Gas Development,2 Shandong Key Laboratory of oilfield chemistry China University of Petroleum East China,Qingdao

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    摘要:

    目前,非常规油气资源的高效开发受到越来越多的关注。压裂是非常规油气开发的有效手段,压裂液的性能决定了压裂效果。传统水基压裂液易对储层造成水敏伤害,而二氧化碳压裂液由于不含水组分,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,本文综述了表面活性剂、碳氢聚合物、含氟聚合物及硅氧烷聚合物四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之后的研究方向提出了建议。

    Abstract:

    At present, more and more attention has been paid to the efficient development of unconventional oil and gas resources. Fracturing is an effective method for unconventional oil and gas development, and the performance of fracturing fluid determines the fracturing effect. 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, this paper studies the structure and performance characteristics of four kinds of carbon dioxide thickeners including surfactant, hydrocarbon polymer, fluoropolymer and siloxane polymer, and summarizes the current research status of carbon dioxide fracturing fluid thickening from two aspects of thickening mechanism and thickening performance. Finally, the characteristics of various thickeners are summarized and suggestions for future research directions are put forward.

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  • 收稿日期:2021-05-07
  • 最后修改日期:2021-08-11
  • 录用日期:2021-09-03
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