US 11,719,069 B2
Well tool device for opening and closing a fluid bore in a well
Espen Hiorth, Trondheim (NO); and Stig Ove Bjørgum, Voss (NO)
Assigned to Interwell Norway AS, Hafrsfjord (NO)
Filed by Interwell Norway AS, Hafrsfjord (NO)
Filed on Mar. 2, 2022, as Appl. No. 17/684,983.
Application 17/684,983 is a continuation of application No. 16/621,127, granted, now 11,293,262, previously published as PCT/EP2018/065635, filed on Jun. 13, 2018.
Claims priority of application No. 20171157 (NO), filed on Jul. 12, 2017.
Prior Publication US 2022/0186584 A1, Jun. 16, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. E21B 34/06 (2006.01); E21B 33/12 (2006.01); E21B 34/14 (2006.01); E21B 34/10 (2006.01)
CPC E21B 34/063 (2013.01) [E21B 33/1208 (2013.01); E21B 34/10 (2013.01); E21B 34/103 (2013.01); E21B 34/14 (2013.01); E21B 2200/06 (2020.05)] 10 Claims
OG exemplary drawing
 
1. A well tool device comprising:
a housing having an axial through bore;
a sleeve section releasably connected to the housing in the axial through bore, wherein the sleeve section comprises an axial bore;
a frangible disc provided in the axial bore of the sleeve section in sealing engagement with the sleeve section; and
a first supporting sleeve fixed to the housing in the axial through bore and a second supporting sleeve provided radially inside of, and releasably connected to, the first supporting sleeve,
wherein the sleeve section is axially displaceable within the axial through bore between a first position and a second position;
wherein the housing comprises an axial bypass fluid passage provided axially between a first location above the sleeve section and a second location below the sleeve section when the sleeve section is in the first position, wherein the axial bypass fluid passage is provided radially between the sleeve section and the housing when the sleeve section is in the first position;
wherein the well tool device comprises a sealing device provided radially between the sleeve section and the housing when the sleeve section is in the second position; and
wherein the first supporting sleeve comprises an upwardly facing surface configured to support a lower end of the sleeve section when the sleeve section is in the second position.