Multipurpose drilling tool

Details Multipurpose drilling tool Multipurpose drilling tool

1996-04-08

1998-03-03

Neuder, William P.

Wells

Processes

Distinct, separate injection and producing wells

E21B 1066

Patent

active

057224897

ABSTRACT:
The present invention relates to a multipurpose drilling tool that may be cycled between drilling and underreaming operations while situated in a well bore. More specifically, the present invention provides a multi-purpose tool in the form of a housing member comprising a central bore, four extensible underreaming blades and means for attaching a standard drill bit. The ability of the multipurpose drilling tool to cycle between drilling and underreaming modes is provided by means of a piston which is motivated downwardly and rotationally by fluid pressure and is directed by a piston travel guide from a first relaxed position to either a drilling position or an underreaming position. The present invention enables cycling of the tool within the well bore without requiring the removal of the tool and drilling string from a well bore, thus increasing the efficiency of drilling operations.

REFERENCES:
patent: 3406769 (1968-10-01), Kammerer, Jr.
patent: 3712854 (1973-01-01), Thometz et al.
patent: 5111893 (1992-05-01), Kuello-Aune
patent: 5141063 (1992-08-01), Quesenbury

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