Wells – Processes – In situ combustion
Patent
1977-08-10
1978-06-20
Novosad, Stephen J.
Wells
Processes
In situ combustion
48DIG6, 166 50, 166 52, E21B 4324
Patent
active
040956504
ABSTRACT:
The present invention relates to the production of relatively high Btu gas by the in situ combustion of subterranean coal. The coal bed is penetrated with a horizontally-extending borehole and combustion is initiated in the coal bed contiguous to the borehole. The absolute pressure within the resulting combustion zone is then regulated at a desired value near the pore pressure within the coal bed so that selected quantities of water naturally present in the coal will flow into the combustion zone to effect a hydrogen and carbon monoxide-producing steam-carbon reaction with the hot carbon in the combustion zone for increasing the calorific value of the product gas.
REFERENCES:
patent: 2788956 (1957-04-01), Pevere et al.
patent: 3563606 (1971-02-01), Sears
patent: 3770398 (1973-11-01), Abraham et al.
patent: 3775073 (1973-11-01), Rhoades
patent: 3865186 (1975-02-01), Von Hippel
patent: 3933447 (1976-01-01), Pasini et al.
patent: 3997005 (1976-12-01), Komar
patent: 4015663 (1977-04-01), Strubhar
patent: 4024914 (1977-05-01), Kreinin
patent: 4062404 (1977-12-01), Pasini et al.
Carlson Dean E.
Larcher Earl L.
Novosad Stephen J.
The United States of America as represented by the United States
Zachry David S.
LandOfFree
Method for increasing the calorific value of gas produced by the does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for increasing the calorific value of gas produced by the, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for increasing the calorific value of gas produced by the will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1129924