| 发明名称 | Apparatus for controlling drill bit depth of cut using thermally expandable materials | ||
| 摘要 | A drill bit for use in drilling a borehole is described that includes a body including a side, face section and a passage in the body. The drill bit further includes a rubbing member disposed in the face section and configured to control a depth of cut for the drill bit, wherein the rubbing member comprises a thermally responsive material in thermal communication with the passage configured to control a position of the rubbing member with respect to the face section. | ||
| 申请公布号 | US9103171(B2) | 申请公布日期 | 2015.08.11 |
| 申请号 | US201213435097 | 申请日期 | 2012.03.30 |
| 申请人 | Baker Hughes Incorporated | 发明人 | Hanford Ryan J. |
| 分类号 | E21B10/62;E21B10/54 | 主分类号 | E21B10/62 |
| 代理机构 | Cantor Colburn LLP | 代理人 | Cantor Colburn LLP |
| 主权项 | 1. A drill bit for use in drilling a borehole, comprising: a body including a side portion and a face; a passage in the body; a rubbing member disposed in the face of the drill bit configured to control a depth of cut for the drill bit, wherein the rubbing member comprises a thermally-responsive material in thermal communication with a fluid flow contained in the passage, the thermally-responsive material configured to control a position of the rubbing member with respect to the face; and a control valve operated in response to a parameter of interest to control the fluid flow through the passage to control the temperature of the thermally-responsive material. | ||
| 地址 | Houston TX US | ||