| 发明名称 |
Downhole Apparatus Using Induction Motors with Magnetic Fluid in Rotor-Stator Gap |
| 摘要 |
In one aspect, an apparatus for use in a wellbore is disclosed that in one non-limiting embodiment includes an AC motor having a rotor and a stator with a gap between the rotor and the stator and a magnetic fluid in the gap that contains an electrically nonconductive fluid and magnetic nanoparticles. |
| 申请公布号 |
US2015159475(A1) |
申请公布日期 |
2015.06.11 |
| 申请号 |
US201314097992 |
申请日期 |
2013.12.05 |
| 申请人 |
Prieto Carlos A.;Kumar Deepak;Richard Bennett M.;Johnson Michael H. |
发明人 |
Prieto Carlos A.;Kumar Deepak;Richard Bennett M.;Johnson Michael H. |
| 分类号 |
E21B43/12 |
主分类号 |
E21B43/12 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An apparatus for use in a wellbore, comprising:
a motor having a rotor and a stator with a gap between the rotor and the stator; and a magnetic fluid in the gap that contains an electrically nonconductive fluid and magnetic nanoparticles that increase magnetic permeability of the electrically nonconductive fluid. |
| 地址 |
Houston TX US |
