E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 37/06 (2006.01) C07C 219/06 (2006.01) C10L 3/00 (2006.01) F15D 1/00 (2006.01) F17D 1/02 (2006.01)
Patent
CA 2301771
A method is disclosed for inhibiting the plugging of a conduit for the transport of hydrocarbon fluids by gas hydrates, wherein use is made of a hydrate formation inhibitor component of formula (1): (R1) (R2) (R3) (R4) A+Y-, wherein two of R1-R4 are independently normal or branched alkyls having 4 or 5 carbon atoms, two of R1-R4 are independently representing organic moieties having at least 8 carbon atoms, A represents a nitrogen or a phosphorus atom, Y represents an anion and wherein at least one of R1-R4 represents a -(CH2-CHR5-O)p-(CH2)q-(CHR6-CH2)r-(CH2z-CHR7)s-(CHR8)t-O-C(O)-R9 moiety with the meaning as defined in the description. Compositions containing a hydrate formation inhibitor component according to formula (I) and a hydrocarbon having from one to eight hydrocarbons as well as the hydrate formation inhibitor components, such as the di-esters of di-butyl -di-isopropanol (or -di-isobutanol) ammonium bromide and coconut fatty acid are believed to be novel.
L'invention concerne un procédé d'inhibition de l'obturation d'un conduit destiné au transport de fluides d'hydrocarbures par des hydrates de gaz, le procédé consistant à utiliser un composant d'inhibition de formation d'hydrates de la formule (I): (R1) (R2) (R3) (R4) A<+>Y<-> dans laquelle deux des éléments de R1 à R4 désignent des alkyles indépendamment normaux ou ramifiés possédant 4 ou 5 atomes de carbone, deux des éléments de R1 à R4 représentent indépendamment des fractions organiques possédant au moins 8 atomes de carbone, A représente un azote ou un atome de phosphore, Y représente un anion et au moins un élément de R1 à R4 représente une fraction: -(CH2-CHR5-O)p-(CH2)q-(CHR6-CH2)r-(CH2-CHR7)s-(CHR8)t-O-C(O)-R9 possédant une signification comme défini dans la description. L'invention concerne également des compositions contenant un composant d'inhibition de formation d'hydrates selon la formule (I) et un hydrocarbure possédant un à huit hydrocarbures ainsi que les composants d'inhibition de formation d'hydrates tels que les di-esters de bromure d'ammonium di-butyl-di-isopropanol (ou -di-isobutanol) et des acides gras de coco.
Shell Canada Limited
Smart & Biggar
LandOfFree
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