钻井液与完井液2025，Vol.42Issue(1)：66-73,8.DOI:10.12358/j.issn.1001-5620.2025.01.007
适用于新疆沙排9组地层抗高温新型离子液体抑制剂及抑制机理
Investigation of High-Temperature Resistant Ionic Liquid Inhibitors for Xinjiang ShapaiGroup 9 and Their Inhibition Mechanism
摘要
Abstract
The effect of reservoir lithology on the stability of the wellbore in Xinjiang Shapai Group 9 was investigated from multiple perspectives via X-ray diffraction,infrared spectroscopy,scanning electron microscopy,and water contact angle.The inhibition performance,inhibition mechanism,and application of three typical ionic liquids(MOA,CP-DES,MM6)were evaluated.The rocks in this group have a high content of clay minerals and contain a large number of hydroxyl groups on their surfaces,which are highly susceptible to swelling with water.Among the samples treated by three ionic liquid inhibitors,the lowest linear swelling rate(21.2%),the highest hot-rolling recovery(63.1%,180℃),and the excellent application results of drilling fluid system indicate that deep eutectic solvent ionic liquid(CP-DES)is the most suitable inhibitor for the Xinjiang Shapai Group 9.Further studies revealed that CP-DES could form strong interactions with the clay surface through hydrogen bonding and enter the clay interlayer to hinder the intrusion of water.Meanwhile,the cationic groups could compress the electric double layer on the clay surfaces and weaken the electrostatic repulsion between the particles,which consequently inhibited the hydration swelling of the clay.关键词
离子液体/页岩抑制剂/岩性分析/分子间相互作用Key words
ionic liquids/shale inhibitors/lithology analysis/intermolecular interactions分类
石油、天然气工程引用本文复制引用
高世峰,屈沅治,黄宏军,任晗,贾海东,刘敬平,贾寒..适用于新疆沙排9组地层抗高温新型离子液体抑制剂及抑制机理[J].钻井液与完井液,2025,42(1):66-73,8.基金项目
中国石油集团关键核心技术攻关项目"抗温240℃以上的环保井筒工作液新材料"(2020A-3913) （2020A-3913）
中国石油集团前瞻性基础性战略性技术攻关课题"准噶尔和柴达木盆地复杂地层垮塌机理及强抑制封堵材料研发"(2021DJ4407) （2021DJ4407）
中国石油天然气集团公司直属院所基础科学研究和战略储备技术研究基金项目"聚合物类钻井液处理剂抗温抗盐机理与关键材料研发"(2021DQ03-15). （2021DQ03-15）
