著者

西野 義則 鵜原 正己 田村 進一

出版者

一般社団法人 GPI標準化委員会

雑誌

GPI Journal (ISSN:21893373)

巻号頁・発行日

vol.1, no.1, pp.41-44, 2018

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In order to increase the resource drilling efficiency by the drilling hole diameter of applying mining tube in the minimum and the maximum inner diameter of the mining tract, such as oil and gas is to coupling diameter minimum , has the durability to light and I will report on the successful outcome to the technological development of semi- flash coupling with the GPI standard tube achieve load reduction due to the weight at the time of deep.