发明名称 |
Downhole mud motor |
摘要 |
A downhole mud motor is disclosed which has an improved bearing mandrel and a bearing stop to transfer a larger percentage of the weight of the drill string to the bit. Also improve sealing systems for the transmission section and bearing section prevent drilling mud from entering critical components. A piston stop is provided to prevent the piston from damaging any parts as the piston moves under pressure. A compensating pressure disk is placed in the lower housing to prevent pressure from building up in the bearing section. A grooved ball seat is provided in the transmission to allow for greater flow of lubricant around the ball bearings.
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申请公布号 |
US2002092682(A1) |
申请公布日期 |
2002.07.18 |
申请号 |
US20010759400 |
申请日期 |
2001.01.12 |
申请人 |
BLAIR PARIS E.;FICKEN JOSEPH L.;RICHARDS DANIEL J. |
发明人 |
BLAIR PARIS E.;FICKEN JOSEPH L.;RICHARDS DANIEL J. |
分类号 |
E21B4/00;(IPC1-7):E21B4/02 |
主分类号 |
E21B4/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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