(19)
(11) EP 2 630 331 A1

(12)

(43) Date of publication:
28.08.2013 Bulletin 2013/35

(21) Application number: 11834883.8

(22) Date of filing: 13.10.2011
(51) International Patent Classification (IPC): 
E21B 47/06(2012.01)
(86) International application number:
PCT/US2011/056145
(87) International publication number:
WO 2012/054295 (26.04.2012 Gazette 2012/17)
(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

(30) Priority: 21.10.2010 US 405431 P

(71) Applicant: Saudi Arabian Oil Company
Dharan 31311 (SA)

(72) Inventor:
  • FLANDERS, Patrick, S.
    Dhahran 31311 (SA)

(74) Representative: Gervasi, Gemma et al
Notarbartolo & Gervasi S.p.A. Corso di Porta Vittoria 9
20122 Milano
20122 Milano (IT)

   


(54) CLUSTERED WELLHEAD TRUNKLINE PROTECTION AND TESTING SYSTEM WITH ESP SPEED CONTROLLER AND EMERGENCY ISOLATION VALVE