Drilling Technology of Over-Thick Overburden Layer Drilling in Pre-Detecting Hole in Henan Province
详细信息
- 责任者：Zhang Dongxing (No.1 Geological Team ; Henan Provincial Non-Ferrous Metals Geological and Mineral Resources Bureau ; Zhengzhou 450016 ; China)
- 刊名：Exploration Engineering
- 出版年：2013
- 卷期：40(12)
- 关键词：深孔 ; deep hole ; 钻探工程 ; drilling engineering
- 页码：p.47-49,53
- 图表：2 illus., 3 tables, 5 refs.
- 分类号：2000
- issnNo：ISSN1672-7428
- isbnNo：CN11-5063/TD
摘要
A drill sticking accident caused ZK001 borehole abandonment in Jiaozhuang iron ore area of Henan, the con-struction technology was improved by using proper equipment and high-quality mud, the final hole with depth of 1115.72m was reached with good technical indexes.Analysis is made on the borehole structure, drilling methods and properties of flushing fluid;the problems appeared in the construction and the countermeasures are briefly discussed.