(19)
(11) EP 2 771 541 B8

(12) CORRECTED EUROPEAN PATENT SPECIFICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 B1)

(48) Corrigendum issued on:
20.09.2017 Bulletin 2017/38

(45) Mention of the grant of the patent:
09.08.2017 Bulletin 2017/32

(21) Application number: 12844402.3

(22) Date of filing: 29.10.2012
(51) International Patent Classification (IPC): 
E21B 43/00(2006.01)
F04B 47/02(2006.01)
F04B 51/00(2006.01)
 E21B 43/12(2006.01)
F04B 49/06(2006.01)
(86) International application number:
PCT/US2012/062459
(87) International publication number:
WO 2013/063591 (02.05.2013 Gazette 2013/18)

(54)

CALCULATING DOWNHOLE CARDS IN DEVIATED WELLS

BERECHNUNG VON BOHRLOCHKARTEN IN VERZWEIGTEN BOHRLÖCHERN

CARTES DE FOND DE PUITS POUR LE CALCUL DANS DES PUITS DÉVIÉS

(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: 28.10.2011 US 201161552812 P
14.02.2012 US 201261598438 P
01.03.2012 US 201261605325 P
27.09.2012 US 201261706489 P

(43) Date of publication of application:
03.09.2014 Bulletin 2014/36

(73) Proprietors:
  • Weatherford Technology Holdings, LLC
    Houston Texas 77056 (US)
  • Pons, Victoria M.
    Houston, TX 77056 (US)

(72) Inventor:
  • PONS, Victoria, M.
    Houston, TX 77056 (US)

(74) Representative: Shanks, Andrew 
Marks & Clerk LLP Aurora 120 Bothwell Street
Glasgow G2 7JS
Glasgow G2 7JS (GB)


(56) References cited: : 
US-A- 4 594 665
US-A1- 2011 091 332
US-B2- 7 168 924
US-B2- 8 036 829
 US-A- 5 464 058
US-A1- 2011 091 335
US-B2- 8 036 829
   
  • APPLICANT'S ADMITTED PRIOR ART
   
Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).