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U.S. Department of Energy
Office of Scientific and Technical Information

Retrievable gravel packer and retrieving tool

Patent ·
OSTI ID:6382818
A retrieving tool for retrieving a gravel packer set in a well bore is described, the gravel packer being of the type having an inner mandrel with a threaded portion thereon and releasing mandrel, the retrieving tool comprising: retrieving mandrel means for attaching to a tool string; collet support means for supporting a collet means and slidably disposed on the retrieving mandrel means; upper collet means for engaging the threaded portion and slidably disposed on the collet support means and adapted for support thereby; and lower collet means for engaging the releasing mandrel.
Assignee:
Halliburton Co., Duncan, OK
Patent Number(s):
US 4793411
OSTI ID:
6382818
Country of Publication:
United States
Language:
English