Wells – Processes – Heating – cooling or insulating
Patent
1980-09-02
1982-04-06
Novosad, Stephen J.
Wells
Processes
Heating, cooling or insulating
166278, 166305R, 252 855R, E21B 4322, E21B 4324
Patent
active
043231241
ABSTRACT:
A method of inhibiting dissolution of the gravel pack and/or erosion of the formation standstone in a well bore subject to water or steam injection. The method includes the addition of a material to the surface of the gravel or formation which is capable of adhering to such surfaces and forming a tenacious water-repellent film. The film is monomolecular and hydrophobic. The active ingredient in the chemical treatment is commercial soybean lecithin. The material is added to the surfaces by injecting a liquid solution of the chemical down the annulus of the well during steaming and/or physically precoating the gravel pack by soaking it in a liquid solution of the chemical.
REFERENCES:
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patent: 2246725 (1941-06-01), Garrison
patent: 2345713 (1944-04-01), Moore et al.
patent: 2366078 (1944-12-01), Williams
patent: 2765851 (1956-10-01), Bond
patent: 3148199 (1964-09-01), De Groote et al.
patent: 3329205 (1967-07-01), Brown
patent: 3438443 (1969-04-01), Prats et al.
patent: 4114691 (1978-09-01), Payton
patent: 4232740 (1980-11-01), Park
Hinderstein Philip M.
Novosad Stephen J.
Sigma Chemical Corporation
Suchfield George A.
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