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Champlin Petroleum Company

John T Patton

Ahmad R Shouman

Carl M Canfield

An improved thermal efficiency power plant for converting fuel energy to shaft horsepower is described. The conventional combustor of a gas tubine power plant is replaced by a direct contact steam boiler 8, modified to produce a mixture of superheated steam and combustion gases. Combustion takes place preferably at stoichiometric conditions. The maximum thermal efficiency of the disclosed plant is achievable at much higher pressures than conventional gas turbines. Uses of multi-stage compression turbines (4, 9, 1, 10) with intercooling (2, 3) and regeneration (16, 17, 18, 19) is utilized along with a vapor bottoming cycle (11, 12, 13) to achieve a thermal efficiency greater tha 60% with a maximum drive turbine inlet temperature of 1600 degrees Fahrenheit.

Very high efficiency hybrid steam/gas turbine power plant wiht bottoming

A process of stimulating oil recovery utilizing carbon dioxide in the liquid state is disclosed. The carbon dioxide is introduced into an underground formation where it partially dissolves in the crude oil present therein. A back pressure in the range of atmospheric to approximately 300 psi is maintained on the formation while the oil containing carbon dioxide is withdrawn. The carbon dioxide is thereafter separated from the oil.

Carbon dioxide stimulated oil recovery process

An improved thickening agent is prepared by reacting a heteropolysaccharide produced by bacteria of the genus Xanthomonas with an alkaline compound in an aqueous reaction media at elevated temperatures.

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Las Cruces, NM, United States of America

John T Patton