(19)
(11) EP 2 734 703 A2

(12)

(88) Date of publication A3:
15.08.2013

(43) Date of publication:
28.05.2014 Bulletin 2014/22

(21) Application number: 12746165.5

(22) Date of filing: 18.07.2012
(51) International Patent Classification (IPC): 
E21B 33/12(2006.01)
(86) International application number:
PCT/US2012/047221
(87) International publication number:
WO 2013/012931 (24.01.2013 Gazette 2013/04)
(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: 18.07.2011 US 201161508952 P

(71) Applicant: Weatherford/Lamb, Inc.
Houston, TX 77056 (US)

(72) Inventors:
  • RING, Lev
    Houston Texas 77077 (US)
  • GANDIKOTA, Varadaraju
    Houston Texas 77433 (US)

(74) Representative: Talbot-Ponsonby, Daniel Frederick 
Marks & Clerk LLP Fletcher House Heatley Road The Oxford Science Park
Oxford OX4 4GE
Oxford OX4 4GE (GB)

   


(54) APPARATUS AND METHOD OF ZONAL ISOLATION