(19)
(11) EP 3 336 303 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
12.09.2018 Bulletin 2018/37

(43) Date of publication A2:
20.06.2018 Bulletin 2018/25

(21) Application number: 17207246.4

(22) Date of filing: 14.12.2017
(51) International Patent Classification (IPC): 
E21B 33/035(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
MA MD TN

(30) Priority: 16.12.2016 US 201615381368

(71) Applicant: OneSubsea IP UK Limited
London EC4V 6JA (GB)

(72) Inventors:
  • MEYER, Joerg, H.
    Houston, TX 77055 (US)
  • ABU ZEID, Hosam
    Houston, TX 77041 (US)
  • KUNZ, Sarah, Rae
    Sugar Land, TX 77479 (US)

(74) Representative: Schlumberger Intellectual Property Department 
Parkstraat 83
2514 JG Den Haag
2514 JG Den Haag (NL)

   


(54) SYSTEMS AND METHODS FOR STARTING, RESTARTING, MONITORING AND INCREASING PERFORMANCE OF A PRODUCTION AND/OR INJECTION SYSTEM


(57) A system (10) includes a distributed control system (20) and a subsea tree (56) that includes subsea tree chokes (136) and a subsea control module (38) communicatively coupled to flow control valves (126). The distributed control system (20) communicatively couples to the subsea control module (38), is located at a surface level, and includes processors (27) that send a first instruction to the flow control valves (126) to adjust hydrocarbon production flow when water or gas cut is above a threshold. The processors (27) also send a second instruction to the subsea tree chokes to adjust the flow of the production when a quality of commingling of the production flow with additional production flows is less than a threshold, an arrival pressure is less than a threshold, or an arrival flow rate is less than a threshold. The processors further continue the production of the fluids with current settings when a production rate is above a production rate threshold.





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