Chemistry of hydrocarbon compounds – Hydrate or production thereof
Patent
1995-10-04
1999-02-23
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
058746609
ABSTRACT:
A method for inhibiting the formation of clathrate hydrates in a fluid having hydrate forming constituents is disclosed. 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 inhibitor used for practicing the method is selected from the family of substantially water soluble copolymers formed from N-methyl-N-vinylacetamide (VIMA) and one of three comonomers, vinylpyrrolidone (VP), vinylpiperidone (VPip), or vinylcaprolactam (VCap). VIMA/VCap is the preferred copolymer. These copolymers may be used alone or in combination with each other or other hydrate inhibitors. Preferably, a solvent, such as water, brine, alcohol, or mixtures thereof, is used to produce an inhibitor solution or mixture to facilitate treatment of the petroleum fluid stream.
REFERENCES:
patent: 3696085 (1972-10-01), Lederer et al.
patent: 4132535 (1979-01-01), Rivers, Jr. et al.
patent: 4973775 (1990-11-01), Sugier et al.
patent: 5244878 (1993-09-01), Sugier et al.
patent: 5331105 (1994-07-01), Duncum et al.
patent: 5420370 (1995-05-01), Sloan, Jr.
patent: 5426258 (1995-06-01), Thomas et al.
patent: 5432292 (1995-07-01), Sloan, Jr.
patent: 5434323 (1995-07-01), Durand et al.
patent: 5491269 (1996-02-01), Colle et al.
patent: 5639925 (1997-06-01), Sloan, Jr. et al.
Polymers In Aqueous Media--Performance Through Association Advances in Chemistry Series, 223, Americal Chemical Society Washington, DC, 1989,D.N. Schulz et al., Chp 9 "Copolymers of N-Vinylpyrrolidone and Sulfonate Monomers", pp. 165-174 (no month available).
"Kinetic Inhibition of Natural Gas Hydrates in Offshore Drilling, Production, and Processing", E. D. Sloan, Jr. et al., Draft Report maiden to each member of the Colorado School of Mines Gas Hydrate Consortium of Jan. 2, 1996*.
Colle Karla Schall
Kelland Malcolm A.
Oelfke Russell Harlan
Exxon Production Research Company
Griffin Walter D.
VanTassel Kurt D.
Wolfs Denise Y.
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