Secondary recovery process
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United States of America Patent
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Oct 26, 1993
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N/A
app pub date -
Apr 13, 1992
filing date -
Apr 13, 1992
priority date (Note) -
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Abstract
In accordance with illustrative embodiments of the present invention, a process for the secondary recovery of oil found in a dolomite formation includes generating in-situ decomposition of the dolomite by heating it to a temperature in the range of from 1,400.degree.-1,750.degree. F. which produces a reaction that has magnesium and calcium oxides and a large quantity of carbon dioxide as products. The carbon dioxide saturates the oil in surrounding formations and makes it more movable toward one or more recovery wells. The heat is convected into the formation by a fluid that is injected into the well from the surface.
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