Wells – Processes – With indicating – testing – measuring or locating
Patent
1991-01-22
1992-03-03
Hruskoci, Peter
Wells
Processes
With indicating, testing, measuring or locating
166279, 166310, 166902, 210698, 210747, E21B 4700, E21B 3706
Patent
active
050924044
ABSTRACT:
A relatively high molecular weight polyvinyl sulfonate and a process for inhibiting scale deposition, particularly inorganic sulfate such as barium sulfate, wherein an aqueous fluid present in or produced from a subterranean formation is contacted with an aqueous solution having a relatively high molecular weight polyvinyl sulfonate dissolved therein. The aqueous fluid has a pH equal to or less than 6.0 and the polyvinyl sulfonate has a molecular weight of from about 9,000 to about 30,000.
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M. C. van der Leeden et al., Inhibition of Barium Sulfate Deposition by Polycarboxylates of Various Molecular Structure, SPE 1914, Society of Petroleum Engineers, 1988, 11 pages.
G. R. Chesnut et al., The Development of Scale Inhibitors and Inhibitor Evaluation Techniques for Carbon Dioxide EOR Flood, SPE 16260, SPE International Symposium on Oilfield Chemistry, San Antonio, Tex., Feb. 4-6, 1987, pp. 187-193.
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Beazley Phillip M.
Dormish Frank L.
Falk David O.
Thompson Ronald G.
Ebel Jack E.
Hruskoci Peter
Hummel Jack L.
Marathon Oil Company
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