(19)
(11) EP 2 748 422 A2

(12)

(88) Date of publication A3:
15.08.2013

(43) Date of publication:
02.07.2014 Bulletin 2014/27

(21) Application number: 12834486.8

(22) Date of filing: 17.09.2012
(51) International Patent Classification (IPC): 
E21B 43/10(2006.01)
(86) International application number:
PCT/US2012/000402
(87) International publication number:
WO 2013/043217 (28.03.2013 Gazette 2013/13)
(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: 19.09.2011 GB 201116098
16.12.2011 GB 201121742
05.07.2012 GB 201212008
14.09.2012 GB 201216499

(71) Applicant: Tunget, Bruce A.
Westhill, Aberdeenshire AB32 6QN (GB)

(72) Inventor:
  • Tunget, Bruce A.
    Westhill, Aberdeenshire AB32 6QN (GB)

(74) Representative: Wightman, David Alexander 
Barker Brettell LLP 100 Hagley Road
Edgbaston Birmingham West Midlands B16 8QQ
Edgbaston Birmingham West Midlands B16 8QQ (GB)

   


(54) APPARATUS AND METHOD OF CONCENTRIC CEMENT BONDING OPERATIONS BEFORE AND AFTER CEMENTATION