钻井液与完井液2025，Vol.42Issue(6)：756-763,8.DOI:10.12358/j.issn.1001-5620.2025.06.007
基于改性碳纳米管共聚的凝胶封堵剂的制备及性能
The Preparation and Properties of a Gel Plugging Agent Made from Copolymerization of Modified Carbon Nanotube
摘要
Abstract
Gel plugging agents usually have the characteristic of good adaptiveness,but the existing drilling fluid gel plugging agents generally suffer from poor stability at elevated temperatures and poor strength.To deal with these problems,a drilling fluid plugging agent was developed by the hybridization of high temperature carbon nanotubes and a terpolymer;the terpolymer gel is used as the matrix and the carbon nanotubes(CNTs)are used as the rigid nanoparticles to aim to solve the problems such as borehole wall instability resulted from the failure of the plugging agents at elevated temperatures in deep well drilling.A nanofiber plugging agent was synthesized by radical polymerization based on a molecular structure design in which maleic anhydride(MAH),alkenyl succinic anhydride(ASA)and styrene(St)were selected as the copolymerization monomers,benzoyl peroxide(BPO)as the initiator,and N,N-methylenebisacrylamide(MBA)as the crosslinking agent.The synthesized high temperature hybridized carbon nanotubes and terpolymer gel plugging agent was evaluated for its functional structures and plugging performance by transmission electron microscopy and sand-disc plugging experiment.The results of the evaluation show that,a drilling fluid treated with 1.0%of the synthesized product has the optimal plugging capacity.At 150℃,the drilling fluid has good rheological properties,good filtration control effect,and can effectively plug nano-micron sized pores and fractures.关键词
钻井液/碳纳米管/三元共聚凝胶/封堵剂Key words
Drilling fluid/Carbon nanotube/Terpolymer/Plugging agent分类
能源科技引用本文复制引用
宋翔远,蓝强,杨世超..基于改性碳纳米管共聚的凝胶封堵剂的制备及性能[J].钻井液与完井液,2025,42(6):756-763,8.基金项目
胜利工程公司重点研究课题"基于纤维增强的承压堵漏技术先导试验"(SKG2506). （SKG2506）
