大口径盐卤井超长裸眼段的分级固井工艺
Graded Cementing Technology for Ultra Long Open Hole Section of Large-diameter Brine Wells
李永春 1赵敏 2祝建红1
作者信息
- 1. 云南省盐业有限公司昆明盐矿,云南 安宁 650300
- 2. 四川省非金属 (盐业)地质调查研究所,四川 自贡 643021
- 折叠
摘要
在盐卤井钻井施工过程中,技术套管固井作业面临井眼直径大,顶替效率低、二开裸眼段长,地质情况复杂、固井作业时间长,影响固井质量等难题,通过加强井眼准备、强化下套管措施、优选水泥浆体系和固井工艺,确保固井施工质量,有效解决了开孔直径大、超长裸眼段和地层压力不均匀等诸多难题,保障后续施工和开采安全.
Abstract
In the process of drilling brine wells,the technical casing cementing operation faces challenges such as large wellbore diameter,low displacement efficiency,long open hole section in the second opening,complex geological conditions,long cementing operation time,and affecting cementing quality.By strengthening wellbore preparation,strengthening casing measures,optimizing cement slurry system and cementing technol-ogy,the quality of cementing construction is ensured,and the problem of large opening diameter is effectively solved There are many difficulties such as excessively long open hole sections and uneven formation pressure,which ensure the safety of subsequent construction and mining,and are of great significance for drilling and mining deep mineral resources.
关键词
大口径/盐卤井/超长裸眼段/分级固井Key words
Large caliber/Salt brine well/Ultra long naked eye segment/Graded cementing引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据