| 发明名称 |
Fluid erosion protection washer for rotating shaft in MWD tool |
| 摘要 |
A shaft protection washer to protect a rotating shaft in a "measurement while drilling" (MWD) tool. Use of the shaft protection washer renders the rotating shaft less susceptible to erosion from the drilling fluid flowing between the rotating component and the stationary component.
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| 申请公布号 |
US2007045583(A1) |
申请公布日期 |
2007.03.01 |
| 申请号 |
US20060442344 |
申请日期 |
2006.05.30 |
| 申请人 |
DOPF ANTHONY R;LE TRANG;LOGAN DEREK;NEFF TIMOTHY;SIEMENS WENDALL;SWITZER DAVE |
发明人 |
DOPF ANTHONY R.;LE TRANG;LOGAN DEREK;NEFF TIMOTHY;SIEMENS WENDALL;SWITZER DAVE |
| 分类号 |
F16K31/44;E21B47/18 |
主分类号 |
F16K31/44 |
| 代理机构 |
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代理人 |
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