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US08172335B2 Electrical current flow between tunnels for use in heating subsurface hydrocarbon containing formations 失效
用于加热地下含烃地层的隧道之间的电流流动

Electrical current flow between tunnels for use in heating subsurface hydrocarbon containing formations
Abstract:
A system for treating a subsurface hydrocarbon containing formation includes one or more shafts. A first substantially horizontal or inclined tunnel extends from one or more of the shafts. A second substantially horizontal or inclined tunnel extends from one or more of the shafts. Two or more heat source wellbores extend from the first tunnel to the second tunnel. The heat source wellbores are configured to allow electrical current to flow between the heat source wellbores.
Abstract(Chinese):

用于处理地下含烃地层的系统包括一个或多个轴。 第一基本水平或倾斜的隧道从一个或多个轴延伸。 第二基本水平或倾斜的隧道从一个或多个轴延伸。 两个或多个热源井筒从第一隧道延伸到第二隧道。 热源井筒被构造成允许电流在热源井筒之间流动。

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