Standard No.:	NB/T 35115-2018/XG1-2021
English Name:	Specification for Drilling Exploration of Hydropower Projects
Chinese Name:	水电工程钻探规程
Chinese Classification:	P59    Water power engineering
Professional Classification:	NB    Professional Standard - Energy
Source Content Issued by:	Nation Energy Administration
Issued on:	2021-01-07
Implemented on:	2021-1-7
Status:	valid
Superseding:	NB/T 35115-2018 Specification for Drilling Exploration of Hydropower Projects
Target Language:	English
File Format:	PDF
Word Count:	57500 words
Translation Price(USD):	1725.0
Delivery:	via email in 1~5 business day

本规程适用于水电工程钻探工作。
①更改：
第5.5.4条“定向钻孔造斜孔段应均匀造斜，采用偏心楔单点造斜或钻杆驱动连续造斜钻进时，造斜强度宜为0.2°/m～0.5°/m；采用螺杆马达孔底驱动进行造斜钻进时，造斜强度宜为0.5°/m～1.0°/m，，并应保证钻杆组顺利通过和回转钻进工作安全。”修改为：“5.5.4 定向钻孔造斜孔段应均匀造斜，采用偏心楔单点造斜或钻杆驱动连续造斜钻进时，造斜强度宜为0.5°/m～1.0°/m；采用螺杆马达孔底驱动进行造斜钻进时，造斜强度宜为0.2°/m～0.5°/m，并应保证钻杆组顺利通过和回转钻进工作安全。”