Granted Patent B2

US 12,467,334 · App. 18/505,156 · Granted Nov 11, 2025

Inventors: Erik Kerst Cornelissen (Amsterdam, NL); Iris Cornelissen (Rijswijk, NL); Robbe Ibn Olieux (Rijswijk, NL); Sam Gerard Van Moorsel (Amsterdam, NL)

E21B33/13E21B34/10E21B43/112

Abstract

Claims (22)

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 away from the longitudinal axis; and

a check valve arranged in said fluid channel which allows injecting fluid in a direction from within the tool housing to the exterior of the tool housing and which blocks fluid flow in an opposite direction.

2 . The downhole tool of claim 1 , wherein the check valve is in an internal cavity within the sting.

3 . The downhole tool of claim 1 , 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 said sting.

4 . The downhole tool of claim 3 , wherein said release section is outside of the tool housing when the sting has been forced in said radially outward direction from the tool housing.

5 . The downhole tool of claim 3 , wherein said release section comprises a frangible zone.

6 . The downhole tool of claim 5 , wherein said frangible zone comprises a frangible tube section reinforced by a plurality of reinforcement rings around the frangible tube section in mutual abutment with neighboring reinforcement rings.

7 . The downhole tool of claim 1 , further comprising a stop body on the sting which moves with the sting in said radially outward direction until the stop body engages with an inside of a casing wall when the downhole tool is activated within a casing.

8 . The downhole tool of claim 1 , wherein said fluid channel, inside of said tool housing, is connectable to a source of fluid sealant.

9 . A method of injecting a sealant in an annulus around a casing in a borehole,

said method comprising:

traversing a punch and inject tool having a tool housing with a longitudinal axis axially through a bore of a casing which is prearranged in a borehole;

forcing a sting in a radially outward direction from the tool housing away from the longitudinal axis, whereby perforating a casing wall with said sting; and

injecting a sealant from within the tool housing to an exterior of the tool housing and into an annular space around the casing, through a fluid channel defined by the sting and through a check valve arranged in said fluid channel, thereby allowing fluid communication in a direction from within the tool housing to the exterior of the tool housing and blocking fluid flow in an opposite direction.

10 . The method of claim 9 , wherein the check valve is shielded from external mechanical loading during perforating of the casing wall.

11 . The method of claim 9 , further comprising severing a distal end of the sting from the tool housing, whereby said check valve is arranged in said distal end of said sting.

12 . The method of claim 11 , wherein said distal end remains stuck in the casing wall upon severing said distal end from the tool housing.

13 . The method of claim 11 , further comprising retracting the tool housing through the bore of the casing while leaving the distal end behind.

14 . The method of claim 13 , wherein the tool housing is retracted before the sealant in the annular space around the casing has hardened.

Assignments (1)

Priority Claims (1)

Continuity (2)

References Cited (30)