Apparatus and method of anchoring and releasing from a packer
AssigneeHalliburton Company
InventorsSteven G. Streich, Kevin T. Berscheidt
Life of this patent
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Abstract
An apparatus and method of anchoring into a packer with a stinger assembly is disclosed. Further, an apparatus and method of releasing from a packer is also disclosed. The apparatus includes an elongated stinger member, a plurality of collet finger members slidably attached to the stinger, a shear ring member with a chamfered shoulder containing a plurality of splined extensions, with a plurality of shear pins contained through the shear ring member. Further, the apparatus includes a load ring attached to the elongated stinger for transferring the load of the downhole tool from the collet finger members to the load ring.
Claims20
An apparatus for releasing a downhole device having thread means in the upper end, said apparatus comprising:
- an elongated stinger member;
- means for threadily mating said stinger;
- with the upper thread means of the downhole device;
- a top adapter sub extending from said elongated stinger member, said top adapter sub defining a shoulder therein;
- a load ring disposed on said elongated stinger member and adapted for applying a load to said shoulder when removing the apparatus from the downhole device;
- and
- means for releasing said means for threadily mating when removing the apparatus.
A method of anchoring into a packer in a wellbore with a stinger assembly on a work string, said stinger assembly containing a collet finger member, a shear ring, and splined extension members extending therefrom, said method comprising the steps of:
- (a) stinging into the packer with the stinger assembly;
- (b) slacking off the weight of the work string on the packer via the stinger assembly so that the collet member engages in the top of the packer;
- (c) rotating the work string in a first direction so that the splined extension members of the shear ring impart torque to the packer via the collet finger member;
- and
- (d) applying tension to the drill string in order to release the packer.
A method of releasing a stinger assembly on a work string from a packer, said stinger assembly containing a collet finger member, a shear ring housing with shear ring extending therethrough, and splined extension member extending therefrom, said method comprising the steps of:
- (a) stinging into the packer with the stinger assembly;
- (b) slacking off the weight of the work string on the packer via the stinger assembly so that the collet member engages in the top of the packer;
- and
- (c) rotating the work string in a first direction so that the splined extension members of the shear ring impart torque to the packer via the collet finger member.
Apparatus for releasing a downhole device having thread means in the upper end, said apparatus comprising:
- an elongated stinger member with a first end and a second end, and a plurality of apertures formed on the outer periphery of said elongated stinger member;
- means for threadily mating said stinger into the downhole device;
- means for engaging said threadily mating means with the upper thread means of the downhole device;
- a load ring attached about the outer periphery of said elongated stinger member;
- a top adapter sub threadily connected to the first end of said elongated stinger member, said top adapter sub having defined thereon an internal shoulder;
- a plurality of collet finger members attached to a tubular housing, said collet finger members having defined thereon thread means and said tubular housing having a protuberant member so that the protuberant member is slidably engaged between the internal shoulder of said top adapter sub and said load ring;
- a shear ring member with a chamfered shoulder, said shear ring member being arranged about the outer periphery of said elongated stinger member and having a plurality of apertures formed therethrough;
- a plurality of splined extensions, said splined extensions being attached to said shear ring member and cooperating with said plurality of collet finger members;
- and
- means for releasing said engaging means.
Apparatus for entry into a packer and retrieving the apparatus comprising:
- a stinger assembly with a first end and a second end, said stinger assembly having a portion defining a plurality of apertures;
- a ring member with a first end and second end slidably disposed about said stinger assembly;
- a plurality of collet fingers formed on the second end of said ring member;
- means, attached to said stinger assembly, for providing resistance to torque;
- a plurality of splined extensions being attached to said shear ring member and cooperating with said plurality of collet fingers;
- a circular member with a plurality of shear pin holes formed therethrough;
- and
- a plurality of shear pins extending through the shear pin holes of said circular member and into the apertures of said stinger assembly.
Apparatus for entry into a packer and retrieving the apparatus comprising:
- a stinger assembly with a first end and a second end, said stinger assembly having a portion defining a plurality of apertures;
- a ring member with a first end and second and slidably disposed about said stinger assembly;
- a plurality of collet fingers formed on the second end of said ring member;
- means, attached to said stinger assembly, for providing resistance to torque;
- a power mandrel threadily connected to the first end of said stinger assembly, said power mandrel having defined thereon an internal shoulder;
- and
- means, attached about the periphery of said stinger assembly, for supporting a load.
An apparatus for releasing a downhole device having thread means in the upper end, said apparatus comprising:
- an elongated stinger member;
- a tubular housing slidably disposed on said stinger member;
- a plurality of collet fingers extending from said tubular housing and slidable therewith;
- a shear ring disposed on said stinger member and adapted for holding said collet fingers in engagement with the thread means of the downhole device;
- and
- a plurality of splined extensions extending from said shear ring member and engaging said collet finger member.
Dependencies are inferred from the claim text.