US 12,467,330 B2
Riser-less managed pressure operations
Gordon Thomson, Houston, TX (US); and John D. Hooker, Cypress, TX (US)
Assigned to WEATHERFORD TECHNOLOGY HOLDINGS, LLC, Houston, TX (US)
Appl. No. 18/836,918
Filed by Weatherford Technology Holdings, LLC, Houston, TX (US)
PCT Filed Jan. 6, 2023, PCT No. PCT/IB2023/050120
§ 371(c)(1), (2) Date Aug. 8, 2024,
PCT Pub. No. WO2023/175400, PCT Pub. Date Sep. 21, 2023.
Claims priority of provisional application 63/319,386, filed on Mar. 13, 2022.
Prior Publication US 2025/0075580 A1, Mar. 6, 2025
Int. Cl. E21B 33/038 (2006.01); E21B 21/08 (2006.01); E21B 37/00 (2006.01)
CPC E21B 33/038 (2013.01) [E21B 21/08 (2013.01); E21B 37/00 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A subsea assembly, comprising:
a first pressure control device comprising an outer housing, and an annular seal configured to seal off an annulus formed between the outer housing and a tubular string extending through the outer housing;
a connector configured to releasably connect the subsea assembly to a subsea wellhead installation;
a guide configured to guide the tubular string into an internal flow passage extending through the subsea assembly, in which the first pressure control device is connected between the connector and the guide; and
a longitudinally extendable and compressible slip joint connected between the first pressure control device and the connector.