发明名称 |
Earth-boring tools and methods of forming earth-boring tools |
摘要 |
Methods of fabricating earth-boring tools include forming an outer portion of an earth-boring tool from a powder mixture comprising hard particles and matrix particles comprising a metal matrix material, disposing a molten material at least partially within the outer portion of the earth-boring tool, and forming the molten material into another portion of the earth-boring tool. Methods of fabricating a bit body of an earth-boring rotary drill bit include forming an outer portion comprising a plurality of hard particles and a plurality of matrix particles comprising a metal matrix material and casting a molten material at least partially within the outer portion of the bit body to form another portion of the bit body. Earth-boring tools include a body for engaging a subterranean borehole having an outer portion and an inner portion comprising at least one material solidified within a cavity formed within the outer portion. |
申请公布号 |
US9347274(B2) |
申请公布日期 |
2016.05.24 |
申请号 |
US201414522297 |
申请日期 |
2014.10.23 |
申请人 |
Baker Hughes Incorporated |
发明人 |
Eason Jimmy W.;Wells Michael R. |
分类号 |
E21B10/08;E21B10/43;E21B10/60;B22D19/14;E21B10/42;C22C1/10;C22C19/00;C22C26/00;C22C32/00;C22C38/02;E21B10/00;B22F5/00 |
主分类号 |
E21B10/08 |
代理机构 |
TraskBritt |
代理人 |
TraskBritt |
主权项 |
1. An earth-boring tool, comprising:
a body for engaging a subterranean formation comprising:
an outer portion comprising a pressed and sintered mixture of hard particles disposed in a metal matrix material; andan inner portion consisting of a second material solidified and disposed entirely within a cavity positioned within the outer portion through a centrifugal casting process. |
地址 |
Houston TX US |