发明名称 |
OIL WELL HEATER CABLE |
摘要 |
A heater cable is strapped alongside tubing in a well to heat the production fluids flowing through the tubing. The heater cable has three copper conductors surrounded by a thin electrical insulation layer. An extrusion of lead forms a protective layer over the insulation layers. The lead sheaths have flat sides which abut each other to increase heat transfer. A metal arm or is wrapped around the lead sheaths of the three conductors in metal-to-metal contact. Three phase power is supplied to the conductors, causing heat to be generated which transmits through the lead sheaths and armor to the tubing.< /SDOAB>
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申请公布号 |
CA2238505(A1) |
申请公布日期 |
1998.04.16 |
申请号 |
CA19972238505 |
申请日期 |
1997.10.08 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
BAILEY, ROBERT;NEUROTH, DAVID H.;DALRYMPLE, LARRY V. |
分类号 |
E21B36/04;H05B3/56;(IPC1-7):H05B3/56;H01B7/04;H01B7/08 |
主分类号 |
E21B36/04 |
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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