石油与天然气化工2025，Vol.54Issue(3)：94-101,8.DOI:10.3969/j.issn.1007-3426.2025.03.013
改性环糊精页岩抑制剂的制备与性能评价
Preparation and performance evaluation of modified cyclodextrin shale inhibitor
唐飞云 1钟诚 1艾加伟 2宋芳 3陈馥1
作者信息
- 1. 西南石油大学化学化工学院
- 2. 中国石油川庆钻探工程有限公司新疆分公司||中国石油川庆钻探工程有限公司钻采工程技术研究院
- 3. 成都西油华巍科技有限公司
- 折叠
摘要
Abstract
Objective To mitigate the wellbore instability due to mud shale hydration expansion in high-temperature environment during deep and ultra-deep wells drilling,the research on temperature-resistant shale inhibitors is carried out.Method A novel shale inhibitor(PKAD)with both green and inhibition properties was synthesized via aqueous polymerization using hydroxypropyl-β-cyclodextrin,a green polysaccharide,along with γ-methacryloyloxypropyltrimethoxysilane,acrylamide,and diallyldimethylammonium chloride as reaction monomers.The molecular structure was characterized by FTIR and H NMR;the inhibition performance of PKAD was evaluated through experiments such as linear expansion and rock debris rolling recovery;and its biodegradability was also studied.Result The material characterization confirmed the successful synthesis of PKAD,and the evaluation experiment demonstrated that PKAD could significantly reduce linear expansion by over 70%.The hot rolling recovery rate of rock debris at 160℃was 92.6%,and the rolling recovery rate of rock debris at 200℃was 85.7%.Mechanism studies showed that PKAD could achieve inhibitory effects by reducing the negative charge on the clay surface and enhancing the hydrophobicity of the clay surface.Additionally,the BOD5/CODCr ratio of PKAD was 0.31,indicating its biodegradability.Conclusion PKAD prepared by refining hydroxypropyl-β-cyclodextrin has good inhibition and temperature resistance properties,which has a certain guiding significance for the modification of natural materials.关键词
泥页岩/环糊精/井壁失稳/页岩抑制剂Key words
mud shale/cyclodextrin/wellbore instability/shale inhibitor引用本文复制引用
唐飞云,钟诚,艾加伟,宋芳,陈馥..改性环糊精页岩抑制剂的制备与性能评价[J].石油与天然气化工,2025,54(3):94-101,8.
