[Invention Announcement] An efficient geological drill bit with expanded strata applicability

Application Publication Number:CN112177532A
Application Publication Date:2021.01.05
Application Number:2020109502174
Application Date:2020.09.11
Applicant:Qidong County Fengsu Drilling Tools Co., Ltd.
Inventors:Li Xiaohuan; Zou Chao; Li Zhongyong; Chen Shuncheng
Address:No. 101 Baihe Group, Baijia Village, Baihe Street Office, Qidong County, Hengyang City, Hunan Province 421600
Classification Number:E21B10/32(2006.01)I;

Abstract:
The invention provides an efficient geological drill bit with expanded strata applicability, related to the field of drill bit processing technology. The drill bit includes a first shell with a third base at the upper end, which is equipped with second cutting teeth. The upper end face of the first shell has a placement hole, within which a top column is slidably connected. The upper end of the top column has a first base, with a second base set on the side end of the first base. The lower end of the top column is equipped with a hydraulic telescopic rod, the outer surface of which is slidably connected to a sealing ring. The outer surface of the sealing ring is fixedly connected to a second limiting sleeve, which in turn is fixedly connected to the first shell. The hydraulic telescopic rod drives the top column to extend, allowing the first and second bases to perform preliminary drilling, while the third base enhances the drill bit's applicability and service life.