| 发明名称 |
APPARATUS AND METHOD FOR CONTROLLING OR LIMITING ROTOR ORBIT IN MOVING CAVITY MOTORS AND PUMPS, SUCH AS MUD MOTORS |
| 摘要 |
A moving cavity motor or pump, such as a mud motor, comprising: a rotor, a stator, and one or more apparatus for constraining (i.e., controlling or limiting) the movement of the rotor relative to the stator. |
| 申请公布号 |
EP2640921(A4) |
申请公布日期 |
2015.03.11 |
| 申请号 |
EP20110841152 |
申请日期 |
2011.11.18 |
| 申请人 |
SMITH INTERNATIONAL, INC. |
发明人 |
JARVIS, BRIAN, P.;WILCOX, NIGEL;WILLIAMS, BRIAN;UNDERWOOD, LANCE;MURRAY, WILLIAM;CARIVEAU, PETER, THOMAS |
| 分类号 |
F04C2/107;E21B4/02;F03C2/08;F04C13/00 |
主分类号 |
F04C2/107 |
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