Helical centering edge

The utility model discloses a helical centering edge. A plurality of embedding holes (2) are drilled on the helical centering edge (1) and embedded with rigid alloy blocks. As a plurality of embedding holes are drilled on the helical centering edge and are embedded with the rigid alloy blocks, the h...

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Bibliographic Details
Main Author LI DONGCAI
Format Patent
LanguageChinese
English
Published 14.10.2009
Subjects
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Summary:The utility model discloses a helical centering edge. A plurality of embedding holes (2) are drilled on the helical centering edge (1) and embedded with rigid alloy blocks. As a plurality of embedding holes are drilled on the helical centering edge and are embedded with the rigid alloy blocks, the helical centering edge can have even abrasion when in use, thereby effectively prolonging the service life of a drilling tool centralizer and lowering use and maintenance costs.
Bibliography:Application Number: CN20082223525U