发明名称 |
HELICAL WINDING OF INSULATED CONDUCTOR HEATERS FOR INSTALLATION |
摘要 |
<p>A heater used to heat a subsurface formation includes an electrical conductor, a semiconductor layer at least partially surrounding the electrical conductor, an insulation layer at least partially surrounding the electrical conductor, an electrically conductive sheath at least partially surrounding the insulation layer. The heater may be located in an opening in the subsurface formation.</p> |
申请公布号 |
EP2556208(A1) |
申请公布日期 |
2013.02.13 |
申请号 |
EP20110766724 |
申请日期 |
2011.04.07 |
申请人 |
SHELL OIL COMPANY;SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V. |
发明人 |
BASS, RONALD MARSHALL;REMEY, EDWARD EVERETT DE ST.;HARLEY, ROBERT GUY |
分类号 |
E21B36/04;H05B3/40 |
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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