Systems and methods for attached-anchored casing stub repair
AssigneeSaudi Arabian Oil Company
InventorsDavid Butler Stonestreet, Faris Abdullah Al Qahtani, Salahaldeen Saleh Almasmoom
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Abstract
A method for deploying an attached-anchored stub connector is disclosed. The method includes receiving a slack off force in a first direction of about 5 kilopounds (klbs) to about 15 klb. This step includes receiving a milled casing stub in an overshot section of the stub connector, and attaching, by an attachment arrangement of an overshot section of the stub connector, to the casing stub. The method also includes receiving an overpull force in a second direction opposite the first direction of about 5 klb to about 10 klb. This step includes anchoring, by an anchoring packer of the stub connector, to the wellbore casing.
Claims22
A method for deploying an attached-anchored stub connector, the method comprising:
- receiving a slack off force in a first direction of about 5 kilopounds (klbs) to about 15 klb comprising:
- receiving a milled casing stub in an overshot section of the stub connector, and
- attaching, by an attachment arrangement of an overshot section of the stub connector, to the casing stub;
- and
- receiving an overpull force in a second direction opposite the first direction of about 5 klb to about 10 klb comprising:
- anchoring, by an anchoring packer of the stub connector, to a wellbore casing.
A method comprising:
- aligning, by a running tool, a stub connector of a long-string remedial assembly releasably connected to the running tool,
- applying a slack off force to the stub connector to attach the stub connector to a casing stub, wherein the slack off section comprises a set of deformable seals and a slip,
- applying an overpull force to the attached stub connector;
- and
- maintaining the overpull force while the attached stub connector is anchored to a wellbore casing.
A connection device comprising:
- a body extending from a first end to a second end, wherein the first end and second end define a body axis, the body comprising:
- an overshot section at the second end, the overshot section comprising:
- a guide wall having a lip, wherein the lip defines an opening at the second end of the body, wherein an inner surface of the guide wall at least partially defines a channel extending from the opening towards the first end of the body, and
- an attachment arrangement comprising:
- a seal stack mounted to the inner surface of the guide wall, wherein the seal stack defines an aperture having a seal diameter less than the lip diameter, and
- a permanent slip mounted to the inner surface of the wall guide wherein the permanent slip defines a hole having a slip diameter less than the lip diameter, wherein the seal stack is arranged between the permanent slip and the opening of the lip;
- a polished bore receptacle (PBR) arranged between the first end and the overshot portion;
- and
- an anchoring arrangement arranged between the first end and the overshot portion.
Dependencies are inferred from the claim text.