US 11,851,976 B2
Punch and inject tool for downhole casing and method for use thereof
Erik Kerst Cornelissen, Amsterdam (NL); Iris Cornelissen, Rijswijk (NL); Robbe Ibn Olieux, Rijswijk (NL); and Sam Gerard Van Moorsel, Amsterdam (NL)
Assigned to SHELL USA, INC., Houston, TX (US)
Appl. No. 17/603,666
Filed by SHELL OIL COMPANY, Houston, TX (US)
PCT Filed May 12, 2020, PCT No. PCT/EP2020/063116
§ 371(c)(1), (2) Date Oct. 14, 2021,
PCT Pub. No. WO2020/229440, PCT Pub. Date Nov. 19, 2020.
Claims priority of application No. 19174667 (EP), filed on May 15, 2019.
Prior Publication US 2022/0298886 A1, Sep. 22, 2022
Int. Cl. E21B 33/13 (2006.01); E21B 43/112 (2006.01); E21B 34/10 (2006.01)
CPC E21B 33/13 (2013.01) [E21B 34/10 (2013.01); E21B 43/112 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A downhole tool for punching a hole in a casing wall and injecting a sealant through said hole, comprising:
a tool housing having a longitudinal axis;
a sting comprising a fluid channel to establish fluid communication from within the tool housing to an exterior of the tool housing through the fluid channel;
a press device acting on the sting to force the sting in a radially outward direction from the tool housing, transversely to the longitudinal axis; and
a check valve arranged in said fluid channel which allows fluid communication in a direction from within the tool housing to the exterior of the tool housing and which blocks fluid flow in an opposite direction,
wherein the sting comprises a release section to sever a distal end of the sting from the tool housing, whereby said check valve is arranged in said distal end of the sting.