Retrieving tool for downhole packers utilizing non-rotational work strings
An apparatus for retrieving a downhole tool is described, comprising: a power mandrel having a portion defining a plurality of grooves in a first set and a single groove defined in a second set; a plurality of locking dogs received within the plurality of grooves and a first lug received within the single groove; means for latching said downhole tool with said power mandrel, said means for latching comprising an inner mandrel with a first and second end, a first shoulder at the first end, a single J-slot defined thereon, a second lug contained on said inner mandrel, a second shoulder defined on the inner diameter, a recessed neck defined at the the inner second mandrel, and means for rotation of said inner mandrel; and overshot means for guiding said apparatus comprising a lower housing attached to said inner mandrel, ratchet teeth contained on said lower housing, a spring slidably disposed about said inner mandrel, an upper housing having a portion defining a recessed neck, and a center spring housing, said lower housing, upper housing and center spring lock housing being securely connected thereto.
- Assignee:
- Halliburton Co., Duncan, OK (United States)
- Patent Number(s):
- US 5224547; A
- Application Number:
- PPN: US 7-693495
- OSTI ID:
- 6344321
- Resource Relation:
- Patent File Date: 30 Apr 1991
- Country of Publication:
- United States
- Language:
- English
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