Shearing tool and methods of use

Details Shearing tool and methods of use Shearing tool and methods of use

2011-08-30

2011-08-30

Thompson, Kenneth (Department: 3674)

Wells

Processes

Disassembling well part

C166S243000

Reexamination Certificate

active

08006769

ABSTRACT:
A shearing tool for shearing, trimming, or reducing objects being pulled through a drill string and methods for retrieving retrievable tools with fins from the drill string, where the retrievable tools must pass through restrictions in the drill string having interior diameters less than the outer diameters of the fins. The fins, affixed to the retrievable tools, provide stability to the tools, while within the drill string, and can be made of rubber, plastic, other shearable materials, or combinations thereof. The apparatuses and methods include inserting a shearing tool with a flange into a box end of a section of drill string, where the flange keeps the shearing tool in place. The shearing tool further comprising a cutting surface for cutting materials pulled through the shearing tool.

REFERENCES:
patent: 2682068 (1954-06-01), Harrigan
patent: 4681160 (1987-07-01), Fineberg
patent: 5348091 (1994-09-01), Tchakarov et al.
patent: 5600862 (1997-02-01), Bleske et al.
patent: 6082451 (2000-07-01), Giroux et al.
patent: 6885308 (2005-04-01), Smith et al.

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