| 发明名称 |
SYMMETRICAL HAR SEAL |
| 摘要 |
A downhole seal system for roller cone drill bits includes a seal gland having a width larger than it depth. In one implementation, the seal gland includes a protrusion along its base on which a seal element seats. The seal element is a single, annular seal element with a recess formed therein so as to define two lobes. The seal element seats in the gland so that the recess engages the protrusion. The lobes function as separate seal elements, although they are a single unitary seal element disposed in a single gland. |
| 申请公布号 |
US2015345226(A1) |
申请公布日期 |
2015.12.03 |
| 申请号 |
US201214654788 |
申请日期 |
2012.12.31 |
| 申请人 |
HALLIBURTON ENERGY SERVICES INC. |
发明人 |
Crawford Michael B.;Williams Mark E.;Lee Young H.;Duckworth David P.;Shan Zhaohui |
| 分类号 |
E21B10/25 |
主分类号 |
E21B10/25 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A drill bit for drilling a wellbore, the drill bit comprising:
a gland having an overall gland width (GW) and an overall gland depth (GD), the gland further comprising opposing side surfaces and a base surface extending therebetween with a protrusion formed along base surface; and a single, annular seal element disposed within the gland, the seal element having an overall cross-sectional seal width SW and an overall cross-sectional seal height SH. |
| 地址 |
Houston TX US |
