Formation fracturing
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United States of America Patent
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-
Nov 1, 1994
Grant Date -
N/A
app pub date -
Apr 19, 1993
filing date -
Apr 19, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An oxygenated foam is injected into a hydrocarbon-bearing reservoir within a diatomite-containing subsurface formation to hydraulically form a fracture within the reservoir. Combustion is initiated between the oxygenated foam and hydrocarbons within the reservoir to burn the formation and alter diatomite within the burned area into a hardened, more highly permeable material. The reservoir may again be fractured to shatter the hardened diatomite to further increase reservoir permeability and form a self-propped fracture within the reservoir.
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