| 发明名称 |
Selective Magnetic Positioning Tool |
| 摘要 |
An actuation device comprises a housing, and a plurality of permanent magnets disposed about the housing. The plurality of permanent magnets is configured to selectively transition between a first position and a second position. The plurality of permanent magnets is configured to provide a stronger magnetic field strength outside the housing than inside the housing in the first position, and wherein the plurality of permanent magnets is configured to provide a stronger magnetic field strength inside the housing than outside the housing in the second. |
| 申请公布号 |
US2016208580(A1) |
申请公布日期 |
2016.07.21 |
| 申请号 |
US201314367141 |
申请日期 |
2013.07.31 |
| 申请人 |
Halliburton Energy Services Inc. |
发明人 |
Delzell Christopher R;Richards William Mark |
| 分类号 |
E21B41/00;E21B33/12;E21B47/00;E21B34/06 |
主分类号 |
E21B41/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An actuation device, comprising:
a housing; and a plurality of permanent magnets disposed about the housing, wherein the plurality of permanent magnets is configured to selectively transition between a first position and a second position, wherein the plurality of permanent magnets is configured to provide a stronger magnetic field strength outside the housing than inside the housing in the first position, and wherein the plurality of permanent magnets is configured to provide a stronger magnetic field strength inside the housing than outside the housing in the second position. |
| 地址 |
Houston TX US |
