一种可固化堵漏工作液的室内研究  

Laboratory Study on Curing Lost Circulation Control Fluid

作　　者：赵启阳[1] 邓慧[2] 王伟[2] 李早元[2] 郭小阳[2] 

机构地区：[1]川庆钻探工程有限公司井下作业公司 [2]油气藏地质及开发工程国家重点实验室.西南石油大学

出　　处：《钻井液与完井液》2013年第1期41-44,92,共4页Drilling Fluid & Completion Fluid

摘　　要：针对目前川东北地区钻井过程中遇到的易漏失问题,室内研制了一种新型可固化堵漏工作液。该堵漏液在1.3～2.0 g/cm3密度范围内可调,具有良好的悬浮能力、流动能力、触变性能以及固化性能,在50～70℃温度下,24 h抗压强度可达到10 MPa以上,稠化时间可调。同时该堵漏液与钻井液具有良好的相容性,并能激活钻井液使之固化,为安全施工提供了保障。考察了常规惰性堵漏材料对堵漏液的性能影响。通过室内堵漏效果评价表明,可固化堵漏液加入惰性堵漏材料WTD-300使用时,具有很强的封堵效果,提高了地层承压能力,既解决了传统桥塞堵漏技术承压能力低的缺点,又弥补了水泥浆堵漏时的化学不相容的危险,具有很好的应用前景。In view of lost circulation in the northeast of Sichuan,a new kind of curing lost circulation control fluid is developed in laboratory.The density range of that is 1.3-2.0 g/cm 3,and it has good performances of suspension,flowing,thixotropic and solidification.In the tekmperature of 50-70℃,the compressive strength can reach over 10 MPa after 24 h,also the thickening time can be regulated as needed.As well as it has good compatibility with drilling fluid,and it can activate the drilling fluid to cure.The results of laboratory experiments show that this fluid system cooperated with conventional LCM WTD-300,has very powerful plugging effect and improves the capability of formation pressure containment,also it is compatible with cement slurry,which has good application prospect.

关 键 词：堵漏液 固化 触变性能 相容性 承压能力 

分 类 号：TE282[石油与天然气工程—油气井工程]