Chemically bonded phosphate ceramic sealant formulations for...

Details Chemically bonded phosphate ceramic sealant formulations for... Chemically bonded phosphate ceramic sealant formulations for...

2005-08-24

2008-10-21

Wood, Elizabeth D (Department: 1793)

Compositions: coating or plastic

Coating or plastic compositions

Inorganic settable ingredient containing

C106S691000

Reexamination Certificate

active

07438755

ABSTRACT:
A sealant for an oil or geothermal well capable of setting within about 3 to about 6 hours at temperatures less than about 250° F. for shallow wells less than about 10,000 feet and deep wells greater than about 10,000 feet having MgO present in the range of from about 9.9 to about 14.5%, KH2PO4present in the range of from about 29.7 to about 27.2%, class C fly ash present in the range of from about 19.8 to about 36.3%, class F fly ash present in the range of from about 19.8 to about 0%, boric acid or borax present in the range of from about 0.39 to about 1.45%, and water present in the range of from about 20.3 to about 21.86% by weight of the sealant.A method of sealing wells is disclosed as are compositions for very high temperature wells is disclosed as is a composition for treating oil field wastes.

REFERENCES:
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patent: 5311945 (1994-05-01), Cowan et al.
patent: 5351759 (1994-10-01), Nahm et al.
patent: 5900053 (1999-05-01), Brothers et al.
patent: 6136088 (2000-10-01), Farrington
patent: 6561269 (2003-05-01), Brown et al.
patent: 7160383 (2007-01-01), Wagh et al.

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