发明名称 |
THREE-PHASE HEATERS WITH COMMON OVERBURDEN SECTIONS FOR HEATING SUBSURFACE FORMATIONS |
摘要 |
A heating system for a subsurface formation is described. The heating system includes three substantially u-shaped heaters with first end portions of the heaters being electrically coupled to a single, three-phase wye transformer and second end portions of the heaters being electrically coupled to each other and/or to ground. The three heaters may enter the formation through a first common wellbore and exit the formation through a second common wellbore so that the magnetic fields of the three heaters at least partially cancel out in the common wellbores. |
申请公布号 |
WO2009052047(A1) |
申请公布日期 |
2009.04.23 |
申请号 |
WO2008US79709 |
申请日期 |
2008.10.13 |
申请人 |
SHELL OIL COMPANY;SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.;VINEGAR, HAROLD J. |
发明人 |
VINEGAR, HAROLD J. |
分类号 |
E21B43/24 |
主分类号 |
E21B43/24 |
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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