钻井液与完井液2025，Vol.42Issue(5)：609-616,8.DOI:10.12358/j.issn.1001-5620.2025.05.006
热塑性温敏黏连树脂堵漏剂制备及其黏结作用机理
Thermoplastic thermosensitive adhesive resin lost circulation material(LCM)and its adhension plugging mechanism
摘要
Abstract
Aiming at the problems such as low success rate of plugging and insufficient pressure bearing capacity of plugging layer caused by non-bonding force interaction between particles of conventional bridging materials,this paper developed a thermoplastic thermosensitive bonding resin plugging agent using acrylonitrile-styryl-butadiene copolymer as matrix resin and modified by blending maleic anhydride and petroleum resin.The properties of thermoplastic thermo-adhesive resin were characterized by infrared,thermogravimetric,DMA and high temperature and high pressure plugging instruments.The bonding mechanism of thermoplastic resin was analyzed.The results show that the plugging agent has good bonding and plugging performance at high temperature,and the pressure bearing capacity is as high as 8.2 MPa at 180℃.The thermosensitive adhesive resin is granular at room temperature and semi-molten solid after reaching the activation temperature.After entering the crack,it can self-adhesive plug through molecular chain diffusion and entanglement,so as to realize the thermosensitive,adaptive and efficient plugging function.Under high temperature conditions,thermoplastic resin thermosensitive adhesive resin can effectively improve the success rate of one-time plugging and pressure plugging ability,which provides a new theoretical and technical way to solve the problem of lost circulation during drilling.关键词
井漏/温敏黏连树脂堵漏剂/自黏/堵漏/钻井Key words
Lost circulation/Thermoplastic thermosensitive adhesive resin LCM/Self-adhesive/Lost circulation plugging/Drilling分类
能源科技引用本文复制引用
雷少飞,肖超,宋碧涛,杨顺辉,何青水,于玲玲..热塑性温敏黏连树脂堵漏剂制备及其黏结作用机理[J].钻井液与完井液,2025,42(5):609-616,8.基金项目
中石化科技部"环境响应自适应防塌钻井液体系研究"(P24236). （P24236）
