Affiliation: | Anhui Deep Drilling Engineering Research Center, Hefei Anhui 230051, China;Hebei Yongming Geological Project Machinery Co., Ltd., Xingtai Hebei 055150, China,Anhui Deep Drilling Engineering Research Center, Hefei Anhui 230051, China;Hebei Yongming Geological Project Machinery Co., Ltd., Xingtai Hebei 055150, China,Anhui Deep Drilling Engineering Research Center, Hefei Anhui 230051, China;Anhui Technical College of Industry and Economy, Hefei Anhui 230051, China,Hebei Yongming Geological Project Machinery Co., Ltd., Xingtai Hebei 055150, China,Hebei Yongming Geological Project Machinery Co., Ltd., Xingtai Hebei 055150, China |