Chemistry of hydrocarbon compounds – Hydrate or production thereof
Patent
1996-03-28
2000-02-22
Griffin, Walter D.
Chemistry of hydrocarbon compounds
Hydrate or production thereof
585950, 95153, 166310, 166371, 137 3, 137 13, C07C 720, F17D 105
Patent
active
060282339
ABSTRACT:
A method for inhibiting the formation of clathrate hydrates in a fluid having hydrate forming constituents is claimed. More specifically, the method can be used in treating a petroleum fluid stream such as natural gas conveyed in a pipe to inhibit the formation of a hydrate restriction in the pipe. The hydrate inhibitors used for practicing the method comprise substantially water soluble polymers having N-vinyl amide or N-allyl amide units. Specific examples of such copolymers include, N-vinyl-N-methylacetamide (VIMA) copolymerized with acryloylpyrrolidine (APYD) or acryloylpiperidine (APID), and more preferably, VIMA copolymerized with N-substituted methacrylamides, such as N-isopropylmethacrylamide (iPMAM) and methacryloylpyrrolidine (MAPYD) to produce inhibitors for practicing the claimed method.
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Berluche Enock
Colle Karla Schall
Costello Christine Ann
Oelfke Russell Harlan
Talley Larry Dalton
Exxon Production Research Company
Griffin Walter D.
VanTassel Kurt D.
Wolfs Denise Y.
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