Application of Aerated Underbalanced Drilling Fluid Technology in Horizontal Section of DP4 Well
- 责任者：Lu Zhoufang (Sanpu Drilling Company of SINOPEC North China ; Xianyang 712000 ; China)
- 刊名：Exploration Engineering
- 出版年：2010
- 卷期：37(2)
- 关键词：充气钻井液 ; aerated drilling fluid ; 欠平衡压力钻进 ; under-balance pressure drilling
- 页码：p.17-19
- 图表：1 illus., 3 tables, 5 refs.
- 分类号：2000
- issnNo：ISSN1672-7428
- isbnNo：CN11-5063/TD
///DP4 well is a horizontal one, locating at the Daniudi gas field of Ordos Basin and drilled with aerated underbalanced drilling technology. The target formation is He 1 with lower formation pressure coefficient from 0.83 to 0.99 (average 0.93). To effectively protect He 1 formation, aerated underbalanced drilling technology was implemented in the whole horizontal section with aerated drilling fluid, and the protection was successful. The paper mainly introduced the aerated underbalanced drilling fluid about the technique & technology, implementation process and the field situation, and also analyzed and evaluated implementation effect of aerated underbalanced drilling fluid in this well.