Thermally assisted gravity drainage (TAGD)
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United States of America Patent
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Mar 8, 2016
Grant Date -
Feb 19, 2015
app pub date -
Oct 30, 2014
filing date -
Jun 17, 2011
priority date (Note) -
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Abstract
A method for producing bitumen or heavy oil from a reservoir, the method comprising: defining at least one lateral section of the reservoir for placement of patterns of heater wells above a producer well; placing the producer well at a substantially centered location at or adjacent to the bottom of the reservoir within each of the lateral sections; placing a triangular pattern of heater wells above the producer well; placing a regular or non-regular pentagonal pattern of heater wells, or a portion thereof, at or above the triangular pattern of heater wells; heating the reservoir with the triangular and pentagonal patterns of heater wells to conductively heat the reservoir and reduce the viscosity of the bitumen or heavy oil; and producing bitumen or heavy oil with the producer well.
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