US 12,435,593 B2
Communication networks for BOP control
Vikas Rakhunde, Cypress, TX (US); Dinesh Kumar Dhamodaran, Florence, KY (US); Limin Chen, Cypress, TX (US); Nick Krippner, Houston, TX (US); Dhinesh Prabhu Nataraja Prabu, Coimbatore (IN); and Matthew Olson, Cypress, TX (US)
Assigned to Schlumberger Technology Corporation
Appl. No. 18/687,359
Filed by Schlumberger Technology Corporation, Sugar Land, TX (US)
PCT Filed Sep. 8, 2022, PCT No. PCT/US2022/042889
§ 371(c)(1), (2) Date Feb. 28, 2024,
PCT Pub. No. WO2023/039052, PCT Pub. Date Mar. 16, 2023.
Claims priority of provisional application 63/241,553, filed on Sep. 8, 2021.
Prior Publication US 2025/0122775 A1, Apr. 17, 2025
Int. Cl. E21B 33/035 (2006.01); E21B 33/064 (2006.01)
CPC E21B 33/0355 (2013.01) [E21B 33/064 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a control system for controlling a subsea blowout preventer (BOP) of a subsea stack assembly installed over a subsea oil and gas well, wherein the control system comprises:
a first topside control device and a second topside control device; and
a first subsea control device and a second subsea control device; and
a third subsea control device and a fourth subsea control device, wherein:
the first topside control device, the second topside control device, the first subsea control device, and the second subsea control device are each communicatively connected with the BOP and operable to control operation of the BOP;
the first subsea control device is a portion of a first control pod of the subsea stack assembly;
the second subsea control device is a portion of a second control pod of the subsea stack assembly;
the third subsea control device is a portion of the first control pod of the subsea stack assembly:
the fourth subsea control device is a portion of the second control pod of the subsea stack assembly;
the first topside control device is communicatively connected with the second topside control device via a first ring communication network, wherein the first ring communication network is at least partially located topside;
the first topside control device, the second topside control device, the first subsea control device, and the second subsea control device are communicatively connected together via a second ring communication network that extends topside and subsea; and
the first topside control device, the second topside control device, the third subsea control device, and the fourth subsea control device are communicatively connected together via a third ring communication network that extends topside and subsea.