(19)
(11) EP 4 229 268 A1

(12)

(43) Date of publication:
23.08.2023 Bulletin 2023/34

(21) Application number: 21881335.0

(22) Date of filing: 15.10.2021
(51) International Patent Classification (IPC): 
E21B 19/16(2006.01)
E21B 44/02(2006.01)
(52) Cooperative Patent Classification (CPC):
E21B 47/18; E21B 2200/20; E21B 7/04; E21B 47/024; E21B 44/02
(86) International application number:
PCT/US2021/071906
(87) International publication number:
WO 2022/082227 (21.04.2022 Gazette 2022/16)
(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: 16.10.2020 US 202063093022 P

(71) Applicants:
  • Services Pétroliers Schlumberger
    75007 Paris (FR)

    FR 
  • GeoQuest Systems B.V.
    2586 BJ The Hague (NL)

    AL AT BE BG CH CY CZ DE DK EE ES FI 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 

(72) Inventors:
  • GUTAROV, Pavel
    34006 Montpellier (FR)
  • VALLET, Laurent
    34006 Montpellier (FR)
  • CHEVALLIER, Bertrand Luc
    Jaya 47800 (SG)

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

   


(54) ADAPTIVE DRILLSTRING CONDITION DETERMINATION