一种极薄煤层钻采卸压增透方法

Release time:2020-10-30 Hits:

Disigner of the Invention:陈忠顺,伏映鹏,魏宏民,刘志恒,刘汉祥,张新旺

Type of Patent:国内

State of Patent:专利授权

Application Number:201710055731.X

Number of Inventors:7

Service Invention or Not:no

Application Date:2017-01-25

Authorization Date:2019-01-01

First Author:Yuan Yong