Wells – Processes – With explosion or breaking container to implode
Patent
1976-10-29
1978-08-01
Novosad, Stephen J.
Wells
Processes
With explosion or breaking container to implode
166 53, 166 63, 166302, 166207, 166312, E21B 3700, E21B 4324, E21B 4327
Patent
active
041037430
ABSTRACT:
A method and means for chemically treating water wells to increase the production thereof. Liquid chemical, usually acid, is initially placed in the well through the water discharge conduit of the well head or pump apparatus at the upper end thereof. Compressed air is initially forced downwardly into the interior of the column pipe in the casing to sense the depth of the water therein so that pressure sensitive gauges in the circuitry may be set according to the water depth. Compressed air is then forced downwardly into the column pipe to force some of the water outwardly therefrom into the water bearing formation. A combustible mixture of air and gas is then introduced into the upper end of the column pipe and ignited so that the force of combustion expels the water and acid in the casing outwardly through the slits in the well casing into the water bearing formation. The heated gases of combustion cool rapidly and the combustion step is repeated approximately 200-300 times over a period of approximately three hours. The heat of combustion increases the temperature of the water and acid to approximately 108.degree. F which enhances the action of the acid. The impact of combustion also tends to loosen or break any encrustation which is present in the water bearing formation. The well is then pumped for approximately 2 to 3 hours to remove the acid and residue therefrom.
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Bossler et al., "Chemical and Mechanical Treatment of Water-Input Wells," Secondary Recovery of Oil in the United States, API, second ed., 1950.
Moran Thomas L.
Novosad Stephen J.
Suchfield George A.
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