US 11,713,552 B2
Subsea anchorage installation system
Richard Samuel Kelway Argall, Kailua, HI (US); Donald Casela Lasser, Honolulu, HI (US); and Gregory John Rocheleau, Honolulu, HI (US)
Assigned to Makai Ocean Engineering, Inc., Waimanalo, HI (US)
Filed by Makai Ocean Engineering, Inc., Waimanalo, HI (US)
Filed on Mar. 14, 2022, as Appl. No. 17/694,314.
Claims priority of provisional application 63/160,385, filed on Mar. 12, 2021.
Prior Publication US 2022/0289342 A1, Sep. 15, 2022
Int. Cl. E02B 17/00 (2006.01)
CPC E02B 17/0008 (2013.01) 18 Claims
OG exemplary drawing
 
1. A subsea anchorage installation system for securing an anchoring element to a seafloor, comprising:
a subsea grout supply assembly comprising:
a variable volume grout storage chamber configured to transport dry grout to the seafloor, wherein the variable volume grout storage chamber includes a water injection port configured to inject water into the variable volume grout storage chamber for mixing with the dry grout while on the seafloor and the variable volume grout storage chamber is configured to expand from a collapsed configuration as water is injected;
a paddle disposed in the variable volume grout storage chamber, wherein the paddle is configured to mix the dry grout and water received through the water injection port into a grout mixture; and
a subsea grout pump configured to pump the grout mixture out of the variable volume grout storage chamber into the anchoring element at the seafloor.
 
12. A method of installing anchoring elements in a seafloor, comprising:
transporting dry grout to the seafloor in a variable volume grout storage chamber, wherein the transported dry grout is maintained dry at the seafloor within the variable volume grout storage chamber;
mixing the transported dry grout and water to form a grout mixture within the variable volume grout storage chamber at the seafloor; and
pumping the grout mixture from the variable volume grout storage chamber at the seafloor to a subsea drill rig at a drill location.