摘要
针对在CCUS井下难以维持水泥石长期完整性的问题,构建了一种遇CO_(2)自修复防腐固井水泥浆体系。该体系引入了自修复材料以及防腐材料,配合其他外加剂形成了密度1.9g/cm^(3)的水泥浆体系。该自修复水泥浆体系常规性能良好,能够达到固井施工的要求。研究了该体系的防腐性能以及自愈合性能,研究结果表明,腐蚀30d后水泥石的腐蚀深度小于1.00mm,CO_(2)腐蚀后抗压强度增强。腐蚀30d后,造缝自修复水泥石的抗压强度相对增长百分比为149.30%。腐蚀12h和24h后,水泥石的自修复率分别为97.64%和97.97%。本文构建的自修复防腐固井水泥浆体系能够有效推进CCUS技术发展以及助力CO_(2)上百年的封存。
In response to the problem of difficulty about maintaining the long-term integrity of cement stone in CCUS,a CO_(2) self-healing anti-corrosive cementing slurry system has been constructed.This system introduced self-healing materials and anti-corrosion materials,combined with other additives to form a cement slurry system with the density of 1.9 g/cm^(3).The self-healing cementing slurry system has good conventional performance and can meet the requirements of cementing construction.The corosion resistance and self-healing perfor-mance of the slurry system were studied.The research results showed that the corrosion depth of cement stone after CO_(2) corrosion for 30 days was less than 1.00 mm,and the com-pressive strength was enhanced after CO_(2) corrosion.After 30 days of corrosion,the relative increase percentage of compressive strength of self-healing cement stone for joint making is 149.30%.After 12 and 24 hours of corrosion,the self repair rates of cement stone were 97.64%and 97.97%,respectively.In this article,the self-healing anti-corrosive cementing slurry system constructed can effectively promote the development of CCUS technology and assist in the storage of CO_(2) for hundred years.
作者
岳家平
彭云帆
武广瑷
武治强
李准
YUE Jiaping;PENG Yunfan;WU Guangai;WU Zhiqiang;LI Zhun(CN00C Research Institute Co.,Ltd.,Beijing 100028,China;China Oilfield Services Co.,Ltd.,Yanjiao Hebei 065201,China)
出处
《石油化工应用》
CAS
2024年第4期67-71,共5页
Petrochemical Industry Application
