In-situ kerogen conversion and recycling

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United States of America Patent

PATENT NO 9133398
APP PUB NO 20120175116A1
SERIAL NO

13335673

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Abstract

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Methods for extracting a kerogen-based product from subsurface (oil) shale formations rely on chemically modifying the shale-bound kerogen using a chemical oxidant so as to render it mobile. The oxidant is provided to a formation fluid in contact with the kerogen in the subsurface shale. An alkaline material is also provided to the formation fluid to mobilize organic acids which are produced during oxidation of the kerogen. A mobile kerogen-based product which includes the organic acids is withdrawn from the subsurface shale formation and further processed to isolate the organic acids contained therein. These organic acids are valuable as hydrocarbon products for creating commercial products and a portion of these organic acids can also be used in the process for extracting the kerogen-based product from the subsurface shale formation.

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Patent Owner(s)

  • CHEVRON U.S.A. INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Carlson, Robert Martin Petaluma, US 6 90
Looney, Mark Dean San Ramon, US 13 446
Wigand, Marcus Oliver Emeryville, US 13 168

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