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US 4,397,351 AGranted
Packer tool for use in a wellbore
AssigneeThe Dow Chemical Company
InventorMonty E. Harris
Life of this patent
Estimating the term…
Abstract
A packer tool, and method for permanently setting the tool, in a packed off position, in a well casing, is disclosed. The tool includes lower slips which are slideable upwardly on a lower cone, and upper slips which are slideable downwardly on an upper cone. The lower slips are set against the casing wall first by applying downward force against the lower cone. After the lower slips have been set, additional downward force is applied against the packer tool to set the upper slips against the casing wall.
Claims8
A packer tool adapted to be permanently set, in a packed off position, inside a well casing, the tool comprising:
- an elongate mandrel which has a teeth section defined on its outer surface,
- the mandrel is enclosed by upper components which include an upper cone member slideable downwardly on the mandrel, an upper sleeve member fastened to the mandrel and to the upper cone member, a set of upper slip members which seat against the upper sleeve and which are slidable downwardly on the upper cone member, and means fastened to the upper cone member, for locking the upper cone into a first position on the mandrel, and thereafter locking the upper cone into a second position on the mandrel;
- the mandrel is enclosed by lower components which include a lower cone member secured to the mandrel, and a set of lower slip members slideable upwardly on the lower cone member;
- and
- a set of packing elements which enclose the mandrel, and which are positioned on the mandrel between the upper cone member and the lower cone member.
2 more elements
Dependencies are inferred from the claim text.