(19)
(11) EP 3 500 722 A1

(12)

(43) Date of publication:
26.06.2019 Bulletin 2019/26

(21) Application number: 17754778.3

(22) Date of filing: 21.08.2017
(51) International Patent Classification (IPC): 
E21B 33/13(2006.01)
E21B 43/04(2006.01)
 E21B 36/00(2006.01)
E21B 33/124(2006.01)
(86) International application number:
PCT/GB2017/052470
(87) International publication number:
WO 2018/033760 (22.02.2018 Gazette 2018/08)
(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:
MA MD

(30) Priority: 19.08.2016 GB 201614227
24.05.2017 WO PCT/GB2017/051458

(71) Applicant: BiSN Tec Ltd
Birchwood Warrington Cheshire WA3 6DE (GB)

(72) Inventors:
  • CARRAGHER, Paul
    Birchwood, Warrington Cheshire WA3 6DE (GB)
  • UNDERWOOD, Lance
    Birchwood, Warrington Cheshire WA3 6DE (GB)
  • BEDOUET, Sylvain
    Birchwood, Warrington Cheshire WA3 6DE (GB)

(74) Representative: Murphy, David John 
Forresters IP LLP Skygarden Erika-Mann-Strasse 11
80636 München
80636 München (DE)

   


(54) DOWNHOLE OPERATIONS RELATING TO OPEN HOLE GRAVEL PACKS AND TOOLS FOR USE THEREIN