Claims
- 1. A downhole setting tool used to actuate a downhole tool having a setting sleeve by setting down weight, comprising:a body; at least one dog biased away from said body and selectively retained to said body; said dog removable at least once from the setting sleeve during release from the downhole tool so that upon setting down said body said dog will not set weight down on the setting sleeve.
- 2. The tool of claim 1, further comprising;at least one retainer mounted over said dog which prevents outward movement of said dog, said retainer selectively movable to allow said dog to be outwardly biased.
- 3. The tool of claim 2, wherein:said body further comprises a latch said latch outwardly extendable for engaging a top of the setting sleeve when removed from said setting sleeve.
- 4. The tool of claim 3, further comprising;a breakable connection holding said retainer in place; said latch when in contact to the top of the setting tube allows a set down force to said body to move said retainer by breaking said breakable connection.
- 5. The tool of claim 4, wherein:said dog is inside the setting tube when said breakable connection is broken.
- 6. The tool of claim 5, wherein:said latch is pivotally mounted; said dog mounted to said body by a dog housing; said latch, when removed from the setting tube engaging said dog housing in a position where it can support said body on the setting sleeve.
- 7. The tool of the claim 6, wherein:said dog housing comprises a window; said retainer spanning said window to retain said dog; said retainer when no longer retained by said breakable member is displaced by said bias on said dog as said dog moves through said window.
- 8. The tool of claim 7, wherein:said dog housing is retained to said body by a second breakable member; said second breakable member when broken by set down weight of said body with said dog on top of the setting sleeve serves as an indicator that a predetermined force has been applied to the setting sleeve.
- 9. The tool of claim 8, wherein:said dog is mounted to said body to allow said body to rotate with the dog remaining stationary.
- 10. A method of setting a tool having a setting sleeve, comprising:inserting a setting tool into a setting sleeve of a downhole tool; providing at least one dog on said setting tool which is initially retained retracted to the body of said setting tool; removing said dog from said sleeve when releasing said setting tool from the downhole tool; retaining said dog retracted to allow reentry of said dog into said sleeve without weight set down on top of said sleeve through said dog.
- 11. The method of claim 10, further comprising:extending a latch out of said setting tool to engage the setting sleeve when said dog is inside the setting sleeve; using said latch to release a retainer for said dog in response to set down weight on said latch.
- 12. The method of claim 11, further comprising:removing said dog from the setting sleeve after set down weight is applied to said latch; applying set down weight to the setting down weight; using said broken breakable member as an indicator that a predetermined force has been applied to the setting sleeve.
- 13. A method of releasing a setting tool from a downhole tool and re-engaging the downhole tool without actuation of a setting member on the downhole tool comprising:releasing support for the downhole tool by said setting tool; removing at least one setting dog from the setting member; and retaining said setting dog so that upon reversal of movement said setting dog will not set the downhole tool.
- 14. The method of claim 13, further comprising:releasing said dog, while its movement is limited by said setting member, to move toward an actuating position with respect to said setting member; removing said dog from contact with said setting member; allowing said dog to move so that upon setting down weight it engages said setting member to activate said downhole tool.
- 15. The method of claim 14, further comprising:breaking a breakable member by said setting down weight with said dog bearing on said actuating member; using the breaking of said breakable member as a signal that a predetermined force has been applied to the setting member.
- 16. The method of claim 14, further comprising:retaining said dog with a retainer; securing said retainer with a breakable member; providing a latch which extends to a position to engage the setting member and said retainer when said latch is moved out of contact with the setting member and back into contact; setting down weight to break said breakable member; using bias on said dog to displace said dog past said retainer.
- 17. The method of claim 13, further comprising:using a liner hanger with a packer as the downhole tool; using a setting sleeve on said packer as the setting member; mounting said dog on said setting tool so that it can remain stationary as the body of said setting tool is rotated.
- 18. The method of claim 13, further comprising:using a liner hanger with a packer as the downhole tool; using a setting sleeve on said packer as the setting member; actuating said liner hanger; cementing a liner supported by said liner hanger when said setting tool is held inserted in said setting sleeve after a previous indication at the surface that said setting tool is no longer supporting said packer.
- 19. The method of claim 18, further comprising:using a retainer to hold said dog from engaging the top of said setting sleeve if initially removed from said setting sleeve to determine that said setting tool no longer supports said packer; allowing a latch to move outwardly to engage the top of said setting sleeve; providing a breakable member on said retainer which breaks with a force smaller than that required for moving said setting sleeve to set said packer; breaking said breakable member with set down weight on said latch.
- 20. The method of claim 19, further comprising:providing a second breakable member operably connected to said dog; breaking said second breakable member with set down weight on said setting sleeve through said dog; sensing said second breakable member being broken as a signal that sufficient force has been applied to said setting sleeve to set said packer.
Parent Case Info
This application claims priority from a Provisional Patent Application entitled Unlocking Packer Setting Method & Device, filed by the same inventors on Nov. 12, 1998, and accorded Ser. No. 60/108,043.
US Referenced Citations (14)
Foreign Referenced Citations (1)
Number |
Date |
Country |
2321919A |
Aug 1998 |
GB |
Provisional Applications (1)
|
Number |
Date |
Country |
|
60/108043 |
Nov 1998 |
US |