C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 8/52 (2006.01) C10L 1/32 (2006.01) C10L 3/00 (2006.01) E21B 37/06 (2006.01) F17D 1/05 (2006.01)
Patent
CA 2458539
A method for inhibiting the formation of gas hydrates within a fluid comprising a gaseous hydrocarbon phase, a liquid hydrocarbon phase and an aqueous phase which method comprises mixing a polymeric emulsifier and optionally a non-ionic non-polymeric co-emulsifier with the fluid prior to subjecting the fluid to conditions under which gas hydrates can be formed so as to generate a water-in-oil emulsion comprising a discontinuous aqueous phase, a continuous liquid hydrocarbon phase and a substantially gas impermeable interfacial layer comprising said polymeric emulsifier and optionally said non-ionic non-polymeric co-emulsifier wherein the aqueous phase is distributed in the continuous liquid hydrocarbon phase in the form of droplets and the substantially gas impermeable interfacial layer encapsulates said droplets.
L'invention concerne un procédé permettant d'inhiber la formation d'hydrates gazeux dans un fluide comprenant une phase d'hydrocarbure gazeux, une phase d'hydrocarbure liquide et une phase aqueuse. Ledit procédé consiste à mélanger un émulsifiant polymère et éventuellement un co-émulsifiant non polymère non ionique avec le fluide avant de soumettre ledit fluide à des conditions dans lesquelles des hydrates gazeux peuvent être formés afin de produire une émulsion eau dans l'huile. Ladite émulsion comprend une phase aqueuse discontinue, une phase d'hydrocarbure liquide continue et une couche interfaciale sensiblement imperméable aux gaz comprenant ledit émulsifiant polymère et éventuellement ledit co-émulsifiant non polymère non ionique, ladite phase aqueuse étant distribuée dans la phase d'hydrocarbure liquide continue sous forme de gouttelettes et la couche interfaciale sensiblement imperméable aux gaz encapsulant lesdites gouttelettes.
Bp Exploration Operating Company Limited
Fetherstonhaugh & Co.
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