Anti-Leakage Cementing Technology with Low Density Slurry in WFSD-2 of Wenchuan Earthquake Fault Scientific Drilling Project
详细信息
- 责任者：Li Qiangui (Institute of Exploration Technology ; CAGS ; Chengdu 611734 ; China) ; Li Xudong
- 刊名：Exploration Engineering
- 出版年：2012
- 卷期：39(9)
- 关键词：断裂带 ; fracture zones ; 固井 ; cementing
- 页码：p.39-40,44
- 图表：8 refs.
- 分类号：2000
- issnNo：ISSN1672-7428
- isbnNo：CN11-5063/TD
摘要
Due to the broken stratum,wall collapsing,landslide accidents and lost circulation happened frequently in the drilling of the second hole of Wenchuan earthquake fault scientific drilling project (WFSD-2). For preventing lost circulation during cementing, anti-leakage cementing technology with low density slurry was selected. Through multiple performance experiment of slurry, the formulation of low density slurry for anti-leak was optimized. This formulation was successfully adopted to cement the Φ168.3 mm casing in WFSD-2.