E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 37/06 (2006.01) C08F 8/32 (2006.01) C08F 222/38 (2006.01) C09K 3/00 (2006.01) C09K 8/52 (2006.01) C10L 1/22 (2006.01) C10L 3/00 (2006.01) F15D 1/02 (2006.01) F17D 1/05 (2006.01)
Patent
CA 2272654
The instant invention relates to the use of water-soluble polymers comprising structural elements of formula (I) wherein each R is independently H or C1-5-alkyl; X is H, an alkaline or earth alkaline metal or a quaternary ammonium group; R1 is H or C1-18-alkyl; and R2 is C1-18-alkyl; and wherein the alkyl groups represented by R1 and R2 may carry a hydroxy or amino substituent; and, if desired, a minor proportion of structural elements of formula (II) wherein R, R1, R2 and X may have the meaning as above, and Alk is a C1-C5-alkylene chain, as additives for inhibiting the formation of gas hydrates in connection with hydrocarbon production and transportation.
La présente invention concerne l'utilisation de polymères solubles à l'eau comprenant des éléments structurels de la formule (I) dans laquelle chaque R est, indépendamment, H ou alkyle C1-5; X est H, un métal alcalin ou alcalino-terreux ou un groupe ammonium quaternaire; R1 est H ou alkyle C1-18; et R2 est alkyle C1-18. Les groupes représentés par R1 et R2 peuvent comprendre un substituant hydroxy ou amino et, si besoin, une faible proportion d'éléments structurels de la formule (II) dans laquelle R, R1 et R2 et X peuvent avoir la définition ci-dessus, et Alk est une chaîne alkylène C1-C5. Lesdits polymères sont utilisés comme additifs pour empêcher la formation d'hydrates de gaz pendant la production ou le transport d'hydrocarbures.
Kelland Malcolm
Klug Peter
Clariant Gmbh
Clariant Produkte (deutschland) Gmbh
Fetherstonhaugh & Co.
Rf-Rogaland Research
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