发明名称 |
ADJUSTABLE BEND ASSEMBLY FOR A DOWNHOLE MOTOR |
摘要 |
A downhole motor for directional drilling includes a driveshaft assembly including a driveshaft housing and a driveshaft rotatably disposed within the driveshaft housing. In addition, the downhole motor includes a bearing assembly including a bearing housing and a bearing mandrel rotatably disposed within the bearing housing. The bearing mandrel has a first end directly connected to the driveshaft with a universal joint and a second end coupled to a drill bit. Further, the downhole motor includes an adjustment mandrel configured to adjust an acute deflection angle ? between the central axis of the bearing housing and the central axis of the driveshaft housing. The adjustment mandrel has a central axis coaxially aligned with the bearing housing, a first end coupled to the driveshaft housing, and a second end coupled to the bearing housing. |
申请公布号 |
WO2014137543(A4) |
申请公布日期 |
2015.03.26 |
申请号 |
WO2014US15499 |
申请日期 |
2014.02.10 |
申请人 |
NATIONAL OILWELL VARCO, L.P.;MARCHAND, NICHOLAS RYAN;PRILL, JONATHAN RYAN |
发明人 |
MARCHAND, NICHOLAS RYAN;PRILL, JONATHAN RYAN |
分类号 |
E21B4/02;E21B7/06 |
主分类号 |
E21B4/02 |
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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