Heating hydrocarbon containing formations in a checkerboard...

E - Fixed Constructions – 21 – B

Patent

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E21B 43/24 (2006.01) E21B 43/30 (2006.01)

Patent

CA 2665864

A method for treating a hydrocarbon containing formation is disclosed. The method includes providing heat to two or more first sections of the formation with one or more first heaters in two or more of the first sections such that the provided heat mobilizes first hydrocarbons in two or more of the first sections. At least some of the mobilized first hydrocarbons are produced through production wells located in two or more second sections of the formation. The first sections and the second sections are arranged in a checkerboard pattern. A portion of at least one of the second sections proximate at least one production well is provided some heat from the mobilized first hydrocarbons but is not conductively heated by heat from the first heaters. Heat is provided to the second sections with one or more second heaters in the second sections to further heat the second sections.

L'invention concerne un procédé pour traiter une formation contenant des hydrocarbures. Le procédé comprend l'étape consistant à fournir de la chaleur à deux premières sections, ou plus, de la formation à l'aide d'un ou de plusieurs premiers dispositifs de chauffage dans deux des premières sections, ou plus, de telle sorte que la chaleur fournie mobilise des premiers hydrocarbures dans deux des premières sections, ou plus. Au moins certains des premiers hydrocarbures mobilisés sont produits par l'intermédiaire de puits de production situés dans deux secondes sections, ou plus, de la formation. Les premières sections et les secondes sections sont agencées selon un motif en damier. Une partie d'au moins une des secondes sections, à proximité d'au moins un puits de production, est dotée d'une certaine quantité de chaleur à partir des premiers hydrocarbures mobilisés, mais n'est pas chauffée par conduction par la chaleur provenant des premiers dispositifs de chauffage. La chaleur est fournie aux secondes sections à l'aide d'un ou de plusieurs seconds dispositifs de chauffage dans les secondes sections, pour chauffer davantage les secondes sections.

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