(19)
(11) EP 4 256 175 A1

(12)

(43) Date of publication:
11.10.2023 Bulletin 2023/41

(21) Application number: 21901661.5

(22) Date of filing: 03.12.2021
(51) International Patent Classification (IPC): 
E21B 44/02(2006.01)
E21B 4/02(2006.01)
 E21B 47/12(2012.01)
(52) Cooperative Patent Classification (CPC):
E21B 47/12; E21B 44/02; E21B 4/02
(86) International application number:
PCT/US2021/072731
(87) International publication number:
WO 2022/120380 (09.06.2022 Gazette 2022/23)
(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: 04.12.2020 US 202063199071 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:
  • SHEN, Yuelin
    Houston, Texas 77493 (US)
  • ZHANG, Zhengxin
    Houston, Texas 77493 (US)
  • CHEN, Wei
    Houston, Texas 77493 (US)
  • CHEN, Zhenyu
    Beijing 100084 (CN)
  • CHAMBON, Sylvain
    Houston, Texas 77493 (US)
  • CHASSARD, Adrien
    Houston, Texas 77077 (US)
  • BA, Samba
    Beijing 100084 (CN)
  • KOLYSHKIN, Anton
    Houston, Texas 77493 (US)
  • BELOV, Dmitry
    Houston, Texas 77077 (US)

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

   


(54) MOTOR EFFICIENCY AND DEGRADATION INTERPRETATION SYSTEM