(19)
(11)EP 2 650 468 A3

(12)EUROPEAN PATENT APPLICATION

(88)Date of publication A3:
03.09.2014 Bulletin 2014/36

(43)Date of publication A2:
16.10.2013 Bulletin 2013/42

(21)Application number: 13163387.7

(22)Date of filing:  11.04.2013
(51)Int. Cl.: 
E21B 33/129  (2006.01)
(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

(30)Priority: 11.04.2012 GB 201206381

(71)Applicant: Welltools Limited
Inverkeithing, Fife FK11 1NZ (GB)

(72)Inventors:
  • Hilliard, Paul
    Inverkeithing, Fife KY11 1HZ (GB)
  • Knight, Jeffrey Paul
    Inverurie, Aberdeenshire AB51 5BH (GB)
  • Hoben, Dominic Michael
    Edinburgh, Lothian EH3 9RU (GB)

(74)Representative: HGF Limited 
Belgrave Hall Belgrave Street
Leeds LS2 8DD
Leeds LS2 8DD (GB)

  


(54)A Downhole Plug


(57) A downhole plug for plugging and method of controlling fluids within a borehole in an oil and/or gas well. The downhole plug has a body having a throughbore for the passage of fluids. The plug also has a mechanical anchoring device that can radially expand an anchoring member on an outer surface of the body to lock the body in a fixed axial position within the borehole and an annular sealing device that can radially expand a sealing member on the outer surface of the body to seal an annulus formed between the outer surface of the body and an inner surface of the borehole. The plug also has a throughbore plugging device that can change configuration between a first open configuration in which the throughbore of the body permits the passage of fluid, and a second closed configuration in which the throughbore resists the passage of fluid.