Progress in research of intelligent self-healing gel and its application prospects in the field of drilling fluid

被引：0
|
作者：
Sun J. [1 ,2 ]
Zhao Z. [1 ]
Bai Y. [1 ]
Lü K. [1 ]
Wang J. [1 ,3 ]
Wang R. [2 ]
Wang C. [1 ]
Dai L. [1 ]
机构：
[1] School of Petroleum Engineering, China University of Petroleum, Qingdao
[2] CNPC Engineering Technology R& D Company Limited, Beijing
[3] Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou
来源：
Shiyou Xuebao/Acta Petrolei Sinica | 2020年 / 41卷 / 12期
关键词：
Fluid loss reduction; Healing mechanism; Intelligent self-healing gel; Lost circulation prevention and control; Wellbore strengthening by chemical action;
D O I：
10.7623/syxb202012023
中图分类号：
学科分类号：
摘要：
Self-healing gel is a kind of smart material that can heal itself after being damaged and have the gel strength close to the overall level. This paper systematically introduces the progress in research of the physical self-healing gel based on hydrophobic interaction, hydrogen bond and ionic bond actions and the chemical self-healing gel based on dynamic action of the chemical bonds including imine bond and acylhydrazone bond as well as Diels-Alder reaction; in combination with the application of drilling fluid and the characteristics of different types of self-healing gel, it summarizes the application prospects of self-healing gel in the lost circulation prevention and control, wellbore strengthening and fluid loss reduction of drilling fluid. The self-healing gel can be used as the lost circulation prevention and control material while drilling. After entering the downhole high-permeability matrix and fractures, it will accumulate, and heal itself to form an integral high-strength gel to plug leakage channels. As a wellbore-strengthening material, it can be absorbed and accumulated on the wall of wellbore by hydrogen bond, static electricity and viscous effect. After healing, it forms a high-strength gel layer, which plugs pores and micro-cracks, and strengthens the stability of sidewall. As a material for controlling fluid loss, it can cooperate with clay and polymers. A dense high-strength filter cake is formed on the side wall to reduce the filtration loss of drilling fluid. The research and application of self-healing gel in the field of drilling fluid will promote the intelligentization of drilling fluid technology. © 2020, Editorial Office of ACTA PETROLEI SINICA. All right reserved.
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页码：1706 / 1718
页数：12
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