(19)
(11) EP 3 140 498 A2

(12)

(88) Date of publication A3:
07.05.2015

(43) Date of publication:
15.03.2017 Bulletin 2017/11

(21) Application number: 14747203.9

(22) Date of filing: 08.07.2014
(51) International Patent Classification (IPC): 
E21B 33/06(2006.01)
(86) International application number:
PCT/US2014/045818
(87) International publication number:
WO 2015/003190 (08.01.2015 Gazette 2015/01)
(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

(30) Priority: 02.07.2013 US 201361842232 P
27.06.2014 US 201414318319

(71) Applicant: National Oilwell Varco, L.P.
Houston, Texas 77036 (US)

(72) Inventors:
  • LANDRITH, James Ray
    Humble, TX 77346 (US)
  • BROWN, Roger Dale
    Katy, TX 77494 (US)
  • BUELOW, Jonathan Lewis
    Houston, TX 77094 (US)
  • LIOTTA, Joseph James
    Conroe, TX 77385 (US)
  • ENSLEY, Eric Trevor
    Cypress, TX 77433 (US)
  • JOHNSON, Christopher Dale
    Cypress, TX 77429 (US)

(74) Representative: Lucas, Brian Ronald 
Lucas & Co. 135 Westhall Road
Warlingham, Surrey CR6 9HJ
Warlingham, Surrey CR6 9HJ (GB)

   


(54) BLOWOUT PREVENTER MONITOR WITH TRIGGER SENSOR AND METHOD OF USING SAME