石油钻采工艺2016，Vol.38Issue(5)：588-593,6.DOI:10.13639/j.odpt.2016.05.009
马深1井超深井钻井液技术
Drilling fluid for the super-deep Well Mashen-1
罗人文 1龙大清 1王昆 1范建国 1吕佳 1白晶1
作者信息
- 1. 中石化中原石油工程有限公司西南钻井分公司
- 折叠
摘要
Abstract
Well Mashen-1 is a key vertical well deployed in northeastern Sichuan by SINOPEC for preliminary exploration. Boast-ing of a TD of 8 418 m, it is the deepest land well drilled in Asia. The fourth and fifth spud-in intervals were drilled at depth of 6 225.4~8 418 m with bottom-hole temperature up to 175 ℃. Accordingly, these intervals have problems related to high-temperature pollu-tion, sidewall instability in mud shale, acidic pollution and sand-carrying. Generally speaking, properties of conventional drilling fluid may not satisfy demands for routine operation. With consideration of these technical challenges, optimized materials and formula were deployed to develop KCl polyamine sulfonated drilling fluid system and temperature -resistant polysulfonate drilling fluid system. Test results indicate that KCl polyamine sulfonated drilling fluid has outstanding inhibition capabilities and can endure temperature up to 200 ℃. In addition, highly matured processing technologies for drilling fluids in super deep well have been developed. Field application results show that the well diameter has been enlarged by approximately 3.1% during the fourth spud-in and 5.1% in the fifth spud-in. Since these technologies can effectively cope with the challenges in drilling fluid for super deep wells, they can be promoted for more extensive application.关键词
钻井液/超深井/井壁稳定/抗高温/酸根污染/携砂性能Key words
drilling fluid/super deep well/sidewall stability/temperature resistence/acidic pollution/sand-carrying capability分类
能源科技引用本文复制引用
罗人文,龙大清,王昆,范建国,吕佳,白晶..马深1井超深井钻井液技术[J].石油钻采工艺,2016,38(5):588-593,6.
