US 12,252,858 B2
Seabed foundations
Richard Haun, Richmond, TX (US)
Assigned to SUBSEA 7 (US) LLC, Houston, TX (US)
Appl. No. 18/286,792
Filed by SUBSEA 7 (US) LLC, Houston, TX (US)
PCT Filed Apr. 13, 2022, PCT No. PCT/US2022/024642
§ 371(c)(1), (2) Date Oct. 13, 2023,
PCT Pub. No. WO2022/221422, PCT Pub. Date Oct. 20, 2022.
Claims priority of application No. 2105317 (GB), filed on Apr. 14, 2021.
Prior Publication US 2024/0191453 A1, Jun. 13, 2024
Int. Cl. F16L 1/16 (2006.01); E02D 27/52 (2006.01)
CPC E02D 27/525 (2013.01) [F16L 1/16 (2013.01)] 31 Claims
OG exemplary drawing
 
1. A subsea foundation, comprising:
at least one mudmat having a top panel and a skirt depending from the top panel to be embedded into seabed soil; and
at least one auxiliary plate supported by the mudmat, the plate being deployable downwardly from a raised, retracted position in which the plate is held above a lower edge of the skirt into a lowered, deployed position in which the plate extends beneath the lower edge of the skirt to be embedded further into the seabed soil.