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- W2374101028 abstract "In view of the problems such as the slim hole sidetracking is easily sticking and has a bad cementing quality,a safe and reliable reamer has been designed in this paper. The tool with PDC cutting effect is designed following the mechanical hard- support design scheme which could achieve reaming while drilling,and could mechanically ream the borehole which drilled by 118 mm bit to 145 mm. The tool expands and shrinks the blades through pitching pressure. When the blades expand to the opening size,the position sleeve of joints remains the position of PDC blades stability to ensure the hard- support. The tool with correct principle and reliable structure provides an effective solution to solve the slim hole problems of cementing difficulty,reducing diameter and sticking frequently." @default.
- W2374101028 created "2016-06-24" @default.
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- W2374101028 date "2015-01-01" @default.
- W2374101028 modified "2023-09-28" @default.
- W2374101028 title "Research on a New-pattern Hydraulic Pressure Reamer" @default.
- W2374101028 hasPublicationYear "2015" @default.
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