Well treating process for chemically heating and modifying a sub

Details Well treating process for chemically heating and modifying a sub Well treating process for chemically heating and modifying a sub

1980-12-12

1982-05-18

Novosad, Stephen J.

Wells

Processes

With indicating, testing, measuring or locating

166300, 166302, 166303, E21B 4322, E21B 4324, E21B 4700

Patent

active

043300375

ABSTRACT:
A portion of a subterranean oil and water-containing reservoir is concurrently chemically heated and selectively increased in its effective permeability to oil by injecting a solution of compounds containing ammonium ions and nitrite ions, which react exothermically to generate gaseous nitrogen, and a reaction-rate-controlling buffer. The reactant concentration and the rate at which the solution is injected are arranged to provide a selected temperature increase within a selected portion of the reservoir.

REFERENCES:
patent: 2124495 (1938-07-01), Miller
patent: 2889884 (1959-06-01), Henderson et al.
patent: 3129760 (1964-04-01), Gambill
patent: 3532165 (1970-10-01), Raifsnider et al.
patent: 3712380 (1973-01-01), Caffey
patent: 4178993 (1979-12-01), Richardson et al.
patent: 4219083 (1980-08-01), Richardson et al.

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