(19)
(11) EP 3 947 908 A1

(12)

(43) Date of publication:
09.02.2022 Bulletin 2022/06

(21) Application number: 20777792.1

(22) Date of filing: 26.03.2020
(51) International Patent Classification (IPC): 
E21B 47/18(2012.01)
F16K 11/07(2006.01)
F16K 27/04(2006.01)
 E21B 34/06(2006.01)
F16K 25/00(2006.01)
F16K 31/06(2006.01)
(52) Cooperative Patent Classification (CPC):
E21B 34/066; E21B 47/24
(86) International application number:
PCT/US2020/024840
(87) International publication number:
WO 2020/198420 (01.10.2020 Gazette 2020/40)
(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:
KH MA MD TN

(30) Priority: 27.03.2019 US 201916365998

(71) Applicant: BAKER HUGHES HOLDINGS LLC
Houston, TX 77073 (US)

(72) Inventors:
  • GREEN, Ryan Damont
    Houston, TX 77073 (US)
  • KRUSPE, Thomas
    Houston, TX 77073 (US)

(74) Representative: Dehns 
St. Bride's House 10 Salisbury Square
London EC4Y 8JD
London EC4Y 8JD (GB)

   


(54) DIAMOND HIGH TEMPERATURE SHEAR VALVE DESIGNED TO BE USED IN EXTREME THERMAL ENVIRONMENTS