Large volume subsea chemical storage and metering system
AssigneeSafe Marine Transfer, LLC
InventorJames E. Chitwood
Life of this patent
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Abstract
A liquid storage tank comprising an outer container wherein the outer container is rigid and has at least two inner containers disposed within the outer container. The first inner container contains seawater, and the second inner container contains at least one stored liquid. The at least two inner containers are flexible and pressure balanced while the volume of the outer container remains fixed, and the volumes of the at least two inner containers are variable. The liquid storage tank is provided for disposal and installation in a subsea environment.
Claims18
A liquid storage tank, comprising:
- an outer container, wherein the outer container is rigid;
- at least two inner containers disposed within the outer container, the at least two inner containers comprising:
- a first inner container containing seawater;
- and
- a second inner container containing at least one stored liquid;
- wherein the at least two inner containers are flexible;
- wherein the at least two inner containers are pressure balanced;
- and
- wherein the volume of the outer container remains fixed, and the volumes of the at least two inner containers are variable.
A method of providing chemicals to a sea floor installation, comprising:
- providing a storage tank in a subsea environment, the storage tank comprising:
- an outer container;
- at least two inner containers disposed within the outer container, the at least two inner containers comprising:
- a first inner container containing seawater;
- and
- a second inner container containing at least one chemical;
- wherein the at least two inner containers are flexible;
- and
- wherein the at least two inner containers are pressure balanced;
- wherein the volume of the outer container remains fixed, and the volumes of the at least two inner containers are variable.
Dependencies are inferred from the claim text.