Method and Device for Formation and Transportation of Gas Hydrates in Hydrocarbon Gas and/or Condensate Pipelines
AssigneeSinvent AS
InventorsAre Lund, Bernd Wittgens, Paal Skjetne
Life of this patent
Estimating the term…
Abstract
The present invention relates to a method and system for treatment of a flow of fluid hydrocarbons containing water. The flow of hydrocarbons is introduced into a mixer (7) where it is mixed with liquid carbon dioxide (6) before the resulting mixture is cooled in a cooler (8) and conveyed to a reactor (9), in which all water present in the hydrocarbon flow will be in the form of hydrates, and said flow is conveyed to a pipeline (11) to be transported to its destination. The cooling system may comprise a choke or a mixer where the warm hydrocarbon flow is mixed with a cold flow of hydrocarbons.
Claims14
Method for pretreatment of a flow of fluid hydrocarbons containing water flowing through a treatment and transportation system, the method comprising:
- introducing the flow of fluid hydrocarbons into a first mixer;
- mixing droplets of liquid carbon dioxide from an injector into the flow of fluid hydrocarbons, whereby a mixture of fluid hydrocarbons and liquid carbon dioxide is formed;
- cooling the mixture of fluid hydrocarbons and liquid carbon dioxide in a first cooler to a temperature below the hydrate equilibrium temperature;
- introducing the mixture of fluid hydrocarbons and liquid carbon dioxide into a reactor, wherein all water present therein is in the form of gas hydrates;
- and
- conveying the mixture of fluid hydrocarbons and liquid carbon dioxide to a pipeline for transport to its destination.
Device for treating a flow of fluid hydrocarbons containing water, the devise comprising, in the flow direction, a hydrocarbon inlet, a mixer with an inlet for liquid carbon dioxide, a cooler, and a reactor, wherein all water in the flow of fluid hydrocarbon is converted to gas hydrates, and a pipeline for transporting the flow of fluid hydrocarbons to its destination.
Dependencies are inferred from the claim text.