废弃钻井液的固化烧结与再利用研究  

Study on Curing Sintering and Utilization of Waste Drilling Fluid

作　　者：潘宝风[1] 兰林[1] 李尚贵[1] 杨兵[1] 孙勇[1] 

机构地区：[1]中石化西南油气分公司工程技术研究院

出　　处：《钻井液与完井液》2011年第1期66-68,93,共3页Drilling Fluid & Completion Fluid

基　　金：中国石化科学技术研究开发项目"非渗透钻井液技术推广应用(西南)"(P08031)研究成果

摘　　要：为解决废弃钻井液的污染问题,采用化学滴定法分析了废弃钻井液化学组成,开发出了由硅酸盐水泥、高铝水泥、页岩组成的固化剂,并研究了固化物的性能。然后采用热能差值分析法研究了温度对废弃钻井液固化物的影响,形成了烧结制度,并进行了烧结实验。最后利用X射线衍射、扫描电镜等手段进一步探讨了废弃钻井液固化及烧结机理。结果表明,固化剂能够水化生成C—S—H凝胶和水化铝酸钙等水化产物并形成网络结构,对废弃钻井液具有良好的快速固化效果。根据特定的烧结制度,在高温下废弃钻井液固化物各组分能够发生固相反应,生成强度等级达到MU20以上的高强度烧结砖,解决了废弃钻井液长期渗漏污染问题。To deal with the contamination caused by waste drilling fluid,a new kind of curing agent containing Portland cement alumina cement and shale was developed and studied.The effect of temperature on curing was studied by differential thermal analysis and the sintering schedule was formed.The curing and sintering mechanisms of waste drilling fluid were analyzed by X-ray and SEM methods.Laboratory researches showed that the curing agent solidified the waste drilling fluid rapidly because it can react with water to form a network structure that contains the hydrates of C-S-H gel and dratted calcium aluminate.Following the sintering schedule,the waste drilling fluid can take place solid-phase reaction and form high strength sintering brick which reaches MU20 in high temperature.

关 键 词：废弃钻井液 固化 烧结 环境保护 

分 类 号：TE923[石油与天然气工程—石油机械设备]