Method for inhibiting hydrate formation
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United States of America Patent
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Feb 27, 2001
Grant Date -
N/A
app pub date -
Mar 11, 1999
filing date -
Jun 10, 1998
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Expired
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Abstract
A method for inhibiting the formation of gas hydrates in a petroleum fluid having hydrate-forming constituents is claimed. More specifically, the method can be used to treat a petroleum fluid, such as natural gas conveyed in a pipe, to inhibit the formation of a hydrate flow restriction in the pipe. The hydrate inhibitors used for practicing the method comprise substantially water soluble homopolymers and copolymers of surfactant monomers, wherein the surfactant monomer unit may be represented by the formula: ##STR1## where R.sub.1 and R.sub.2 independently are hydrogen or a methyl group, M is a metal cation, n is a number sufficient to produce a number average molecular weight between 1000 and 6,000,000, and o is a number from 1 to 5.
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