Coring bit body structure with inoculation insert diamond

A carcass structure of a cast metal core bit comprises an operational layer 1, a buffer layer 2 and a cover 3, wherein the cover 3 is adglutinated together with a steel body 4 via heat pressing. The carcass structure is characterized in that the buffer layer 2 is arranged between the operational lay...

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Bibliographic Details
Main Authors MINGQUAN LI, HONGPING TANG, SHOUKANG LIU
Format Patent
LanguageEnglish
Published 20.11.2002
Edition7
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:A carcass structure of a cast metal core bit comprises an operational layer 1, a buffer layer 2 and a cover 3, wherein the cover 3 is adglutinated together with a steel body 4 via heat pressing. The carcass structure is characterized in that the buffer layer 2 is arranged between the operational layer 1 and the cover 3 to function as a gage and a cutting assistance, a perfect drilling and gage system is formed by the operational 1 and the buffer layer 2. The cast metal core bit employs the carcass structure, increasing the drilling depth durability and saving use-cost for user.
Bibliography:Application Number: CN2001257566U