Containment system

A containment system for recovering hydrocarbon fluid from a leaking device that is situated at the seafloor and that is leaking hydrocarbon fluid from a well, and wherein the containment system comprises:

• a pipe having a lower end positioned above and substantially near the leaking device and an upper end positioned substantially near the sea surface, said pipe conveying an input fluid that is a mix of components, said components comprising at least water, oil, gas, and hydrate,
• a treatment facility fed with the input fluid from the pipe and separating the components of the input fluid,
• the pipe has a diameter adapted to convey the hydrate from the lower end to the upper end, and
• the treatment facility comprises a tank connected to the pipe for receiving the input fluid, adapted for dissociation of hydrate component and adapted for providing an output fluid having a concentration in oil higher than the concentration in oil of the input fluid, and the treatment facility comprises a heater device inside the tank for heating the input fluid, and
• wherein the tank comprises a first cavity receiving the input fluid from the pipe, a second cavity for separating liquid components of the input fluid, and a third cavity for extracting an output fluid, and wherein a first wall separates the first cavity and the second cavity, said first wall comprising a plurality of lateral holes to allow transfer of input fluid to the second cavity and to cancel flow turbulences, and a second wall separates the second cavity and the third cavity, said second wall having an intermediate opening for transferring oil component to the third cavity.