# US 9,752,416 B2 · Method of preventing hydrate formation in open water capture devices > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,752,416 B2 - Document ID: US9752416B2 - Status: Granted - Kind: B2 - Application number: 15/110,794 - Filed: 2015-01-08 - Published: 2016-11-17 - Granted: 2017-09-05 - Earliest claimed: 2014-01-13 - Assignees: Shell Oil Company - Applicants: Shell Oil Company - Inventors: Karl Gregory Anderson; Gaurav Bhatnagar; Sujatha Degaleesan; Gregory John Hatton - Web page: https://patentgrep.com/patent/US9752416B2 ## CPC - E21B 43/0122: {Collecting oil or the like from a submerged leakage (cleaning or keeping clear the surface of open water from oil or the like E02B15/04)} - E02B 15/04: Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials ({stopping water-borne material in artificial water canals E02B5/085; stopping water-borne material at barrages or weirs E02B8/023}; other treatment of water, waste water or sewage C02F; materials for treating liquid pollutants, e.g. oil, gasoline, fat, C09K3/32 {; separation of oil in sewage conduits E03F5/16}) - E02B 15/08: Devices for reducing the polluted area {with or} without {additional devices for} removing the material - E02B 15/0814: {with underwater curtains} - E02B 2015/005: {Tent-like structures for dealing with pollutant emissions below the water surface} - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS - E02B: HYDRAULIC ENGINEERING (ship-lifting E02C; dredging E02F) ## Abstract An open water capture device comprising a structure, wherein the structure comprises an open bottom, a top, and one or more injection primary ports. ## Claims ### Claim 1 An open water capture device comprising: a structure, wherein the structure comprises an open bottom, a top, and one or more primary injection ports; a secondary chamber, wherein the secondary chamber comprise an open bottom, one or more secondary injection ports, one or more pumps, and one or more outlets, wherein the one or more outlets of the secondary chamber are in fluid communication with the primary injection ports and wherein the one or more pumps are capable of pumping fluid from the secondary chamber through the one or more outlets into the structure via the one or more primary injection ports. ### Claim 2 (depends on 1) The open water capture device of claim 1, wherein the one or more primary injection ports are disposed on the structure such that they are capable of inducing circulation within the structure when fluid is injected into the structure. ### Claim 3 (depends on 1) The open water capture device of claim 1, wherein the structure comprises one or more tertiary injection ports. ### Claim 4 (depends on 3) The open water capture device of claim 3, wherein the one or more outlets of the secondary chamber are in fluid communication with the one or more tertiary injection ports. ### Claim 5 An open water containment system comprising: an open water capture device, wherein the open water capture device comprises: a structure, wherein the structure comprises an open bottom, a top, and one or more primary injection ports and a secondary chamber, wherein the secondary chamber comprise an open bottom, one or more secondary injection ports, one or more pumps, and one or more outlets, wherein the one or more outlets of the secondary chamber are in fluid communication with the primary injection ports and wherein the one or more pumps are capable of pumping fluid from the secondary chamber through the one or more outlets into the structure via the one or more primary injection ports; a flow line attached to the top of the structure; and a leak source, wherein the open water capture device is located above the leak source. ### Claim 6 (depends on 5) The open water containment system of claim 5, wherein the flow line is a riser. ### Claim 7 (depends on 5) The open water containment system of claim 5, wherein the leak source is a leak from the sea floor or a leak from a piece of subsea equipment. ### Claim 8 A method of limiting the formation of gas hydrates in an open water capture device comprising: providing an open water capture device, wherein the open water capture device comprises: a structure, wherein the structure comprises an open bottom, a top, one or more primary injection ports, and one or more tertiary injection ports and a secondary chamber, wherein the secondary chamber comprise an open bottom, one or more secondary injection ports, one or more pumps, and one or more outlets, wherein the one or more outlets of the secondary chamber are in fluid communication with the primary injection ports and wherein the one or more pumps are capable of pumping fluid from the secondary chamber through the one or more outlets into the structure via the one or more primary injection ports; positioning the open water capture device over the leak source; allowing fluid from the leak source to flow into the open water capture device; and injecting fluid into the open water capture device through the one or more tertiary injection ports. ### Claim 9 (depends on 8) The method of claim 8, wherein the fluid injected into the open water capture device comprises water and/or hydrocarbons. ### Claim 10 (depends on 8) The method of claim 8, wherein the fluid injected into the open water capture device lowers the concentration of hydrate forming gas in the open water capture device.