A method for converting hydrate buried in the seabed into a hydrocarbon composition with market value.

摘要

A method of producing a marketable hydrocarbon composition from a hydrate deposit buried in the waterbottom comprises: - inducing an underwater excavator to excavate hydrate cuttings from the hydrate deposit and to mix the excavated hydrate cuttings with water and/or bottom particles to form a pipeline transportable hydrate containing slurry; - inducing a slurry lifting and processing assembly comprising a riser conduit, which is connected to the excavator, to lift the slurry to the water surface and to convert the slurry into a transportable methane containing intermediate product; and - transporting the transportable methane containing intermediate product to a facility for converting the intermediate product into a marketable hydrocarbon composition.