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US 4,057,107 AGranted
Method of initiating underground in-situ combustion
AssigneeDeutsche Texaco Aktiengesellschaft
InventorsGunter Pusch, Rudolf Gedenk
Life of this patent
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Abstract
A method for the initiation of an in-situ combustion in an underground formation by injecting into the formation an ignition mixture containing an olefinic hydrocarbon or an unsaturated fatty acid, an organic peroxide and a heavy metal salt.
Claims11
A method for initiating in-situ combustion in an underground formation containing a combustible material said formation being penetrated by an injection well which comprises the steps of:
- a. introducing into said formation via said injection well an ignition mixture containing from about 2 to about 30 parts by weight of the total weight of said mixture of olefinic hydrocarbons or unsaturated fatty acids, from about 0.1 to 15 parts by weight of an organic peroxide and from about 0.001 to 0.1 parts by weight of a heavy metal salt,
- b. injecting into said formation via said injection well an oxygen-containing gas,
- c. continuing said injection of said oxygen-containing gas to ignite said combustible material in said formation.
Dependencies are inferred from the claim text.