Construction Practice of Drilling in Complex Formation of Gold Field in Gansu Province
详细信息
- 责任者：Song Duanzheng (No.1 Geo-Investigation Institute ; Gansu Provincial Bureau of Geology and Mineral ; Tianshui 741020 ; China)
- 刊名：Exploration Engineering
- 出版年：2012
- 卷期：39(1)
- 关键词：复杂地层钻进 ; drilling in complicated formation
- 页码：p.44-46
- 图表：2 tables, 5 refs.
- 分类号：2000
- issnNo：ISSN1672-7428
- isbnNo：CN11-5063/TD
摘要
According to the difficulties of broken formation, fracture development, lost circulation, callapse, drill rod sticking and burying in Xihedaqiao gold field, diamond swivel type double tube drilling technology and borehole protection with polyacrylamide non-dispersive low solid washing fluid were adopted with several leakage control measures, the technical effects were received. This paper summed up the construction experience in complex formation of this gold field.