| 发明名称 | High strength infiltrated matrix body using fine grain dispersions | ||
| 摘要 | A drill bit may include a bit body having a plurality of blades extending radially therefrom and at least one cutting element for engaging a formation disposed on at least one of the plurality of blades. The bit body has a continuous infiltration binder and a plurality of carbide particles dispersed in the continuous infiltration binder, wherein at least a portion of the plurality of carbide particles and at least a portion of the continuous infiltration binder form a first carbide matrix region, and wherein the plurality of carbide particles forming the first carbide matrix region have an average grain sizes of less than about 44 microns. | ||
| 申请公布号 | US8893828(B2) | 申请公布日期 | 2014.11.25 |
| 申请号 | US201012949290 | 申请日期 | 2010.11.18 |
| 申请人 | Smith International, Inc. | 发明人 | Lockwood Gregory T.;Keshavan Madapusi K.;Griffo Anthony |
| 分类号 | E21B10/36;E21B10/46;B29C43/00;E21B10/573;C22C1/10;B22F5/00;B29K503/04 | 主分类号 | E21B10/36 |
| 代理机构 | Osha Liang LLP | 代理人 | Osha Liang LLP |
| 主权项 | 1. A drill bit, comprising: a bit body having a plurality of blades extending radially therefrom, the bit body comprising a continuous infiltration binder and a plurality of carbide particles dispersed in the continuous infiltration binder; wherein at least a portion of the plurality of carbide particles and at least a portion of the continuous infiltration binder form a first carbide matrix region, wherein the plurality of carbide particles forming the first carbide matrix region have an average grain sizes of less than about 44 microns and comprise a mean free path therebetween ranging from 0.5 to 5 microns; and at least one cutting element for engaging a formation disposed on at least one of the plurality of blades. | ||
| 地址 | Houston TX US | ||