US 12,276,170 B2
Subsea wellhead monitoring system
Brandon Beau Beaver, Spring, TX (US); Jonathan Michael Durham, Richmond, TX (US); and Robert E. Smith, III, Missouri City, TX (US)
Assigned to Hunting Energy Services, LLC, Houston, TX (US)
Filed by HUNTING ENERGY SERVICES, LLC, Houston, TX (US)
Filed on Aug. 1, 2023, as Appl. No. 18/229,080.
Claims priority of provisional application 63/402,732, filed on Aug. 31, 2022.
Prior Publication US 2024/0068319 A1, Feb. 29, 2024
Int. Cl. E21B 33/043 (2006.01); E21B 33/035 (2006.01); E21B 47/00 (2012.01); E21B 47/06 (2012.01)
CPC E21B 33/043 (2013.01) [E21B 33/0355 (2013.01); E21B 47/06 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A system for plugging and monitoring a subsea wellhead in a subsea environment, the subsea wellhead having a bore with a landing and a lock profile therein, the system comprising:
a hanger assembly configured to install on the landing and configured to engage the lock profile, the hanger assembly having an annular hanger seal configured to seal in the bore;
a plug assembly supported in the hanger assembly and having an annular plug seal, the annular plug seal configured to seal in the landing, the plug assembly at least defining first and second ports, the first port configured to communicate with a bore envelope of the subsea wellhead below the annular plug seal sealed in the landing, the second port configured to communicate with an annulus envelope between the annular plug seal sealed in the landing and the annular hanger seal sealed in the bore; and
a monitoring assembly at least having first and second pressure monitors, the first pressure monitor configured to communicate with the first port and configured to measure a first pressure measurement related to the bore envelope, the second pressure monitor configured to communicate with the second port and configured to measure a second pressure measurement related to the annulus envelope.