Earth boring – well treating – and oil field chemistry – Well treating – Contains organic component
Reexamination Certificate
2011-03-29
2011-03-29
Figueroa, John J (Department: 1765)
Earth boring, well treating, and oil field chemistry
Well treating
Contains organic component
C507S090000, C507S236000, C507S238000, C507S240000, C507S241000, C507S245000, C507S260000, C507S267000, C507S269000, C166S304000, C166S305100
Reexamination Certificate
active
07915204
ABSTRACT:
An aqueous composition for treating hydrocarbon wells contains (a) a scale inhibitor and (b) a viscoelastic surfactant, and further contains from 0 to less than 1% by weight of acid selected from the group consisting of hydrochloric acid, sulfuric acid, phosphoric acid, formic acid, acetic acid, citric acid, maleic acid, hydrofluoric acid, and mixtures thereof.
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SPE 94593 paper, “Application of a Fully Viscosified Scale Squeeze for Improved Placement in Horizontal Wells”, J.S. James, D.M. Frigo, SPE, and M.M. Townsend, Shell U.K. Ltd.; G.M. Graham, SPE, and F. Wahid, Scaled Solutions Ltd.; and S.M. Health, SPE, Clariant UK, Copyright 2005, Society of Petroleum Engineers Inc.
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Colaco Allwyn
De Campo Floryan
Jones Chris
Langlois Bruno
Woodward Gary
Figueroa John J
Rhodia Operations
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