Downhole tool apparatus and method of limiting packer element ex

Details Downhole tool apparatus and method of limiting packer element ex Downhole tool apparatus and method of limiting packer element ex

1996-03-29

1997-12-30

Neuder, William P.

Wells

Processes

Placing or shifting well part

166118, E21B 33129

Patent

active

057019592

ABSTRACT:
An improved downhole tool apparatus and method for limiting the extrusion of packer element seals of packers and bridge plugs which utilize segmented packer retaining shoes when such tools are of larger diameters, or when used at elevated differential pressures or elevated temperatures. Preferably the segmented packer shoes incorporate a plurality of gap-bridging disks to limit if not eliminate unwanted extrusion of the packer elements upon setting of the tool. By making the packer element shoes and disks of non-metallic material, the subject invention increases the ability to drill or mill downhole tools out of a well bore in less time than it would take with using conventional or non-conventional drilling or milling techniques or equipment while providing enhanced high temperature and high pressure performance, especially in larger nominal outside diameter downhole tools.

REFERENCES:
patent: 4730670 (1988-03-01), Kim
patent: 5540279 (1996-07-01), Branch et al.

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