Application of Drilling Deviation Correcting and Deflecting Techniques in Geological Exploration at Songta Hydropower Station
详细信息
- 责任者：Chen Mingxing (Beijing Research Institute of Survey and Design ; China Hydropower Engineering Consulting Group Co. ; Beijing 100024 ; China) ; Chen Baoguo
- 刊名：Exploration Engineering
- 出版年：2013
- 卷期：40(10)
- 关键词：孔内事故 ; downhole trouble ; 纠斜 ; deviation correction ; 造斜 ; whipstock
- 页码：p.35-38
- 图表：5 illus., 5 refs.
- 分类号：2000
- issnNo：ISSN1672-7428
- isbnNo：CN11-5063/TD
摘要
This article introduces the special application of drilling deviation correcting and deflecting techniques in dealing with drilling troubles in Songta hydropower station. The deviation correcting technology was used to ensure hole verticality when drilling construction was obstacled by casing deflection caused by uneven hardness in deep overburden riverbed; the deflecting teehnologT was used to eliminate the effects easused by drill rod burying to keep drilling construction going on. These techniques have worked well in the drilling in deep overburden and broken layers and have development and application values.