发明名称 |
Downhole lubrication system |
摘要 |
What is claimed is a downhole lubrication system comprising a drill string component comprising an outer diameter and an inner bore. A reservoir may be disposed intermediate the outer diameter and inner bore. A piston may be disposed at least partially within the reservoir. At least one channel may extend from the reservoir to a bearing surface. As drilling fluid is passed through the inner bore, the piston may be pressurized, urging lubricant toward the bearing surface via the at least one channel.
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申请公布号 |
US8020637(B2) |
申请公布日期 |
2011.09.20 |
申请号 |
US20090494888 |
申请日期 |
2009.06.30 |
申请人 |
SCHLUMBERGER TECHNOLOGY CORPORATION |
发明人 |
HALL DAVID R.;LEANY FRANCIS;BEAZER MICHAEL;WEBB CASEY |
分类号 |
E21B10/24 |
主分类号 |
E21B10/24 |
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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