System and method for extracting energy
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United States of America Patent
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Jul 18, 2017
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app pub date -
Feb 24, 2015
filing date -
Nov 16, 2010
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Abstract
A method and apparatus for efficiently extracting geothermal energy from a subterranean thermal reservoir through a wellbore where the heat exchange fluid is introduced at a slower velocity than the velocity at which the fluid is extracted. The method and apparatus further comprises a region void of cement between the outer wall of a casing and the inner wall of the wellbore, such that thermally conductive material can be injected therein.
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