Stabilizer-reamer for drilling an oil well

Details Stabilizer-reamer for drilling an oil well Stabilizer-reamer for drilling an oil well

1996-10-30

1998-08-04

Neuder, William P.

Boring or penetrating the earth

With tool shaft detail

Shaft carried guide or protector

1753254, E21B 1710

Patent

active

057880000

ABSTRACT:
The subject of the present invention is a stabilizer-reamer for drilling an oil well. The invention provides an improvement to drillpipe string stabilizers used when drilling an oil well.
The purpose of the stabilizer, which forms the subject of the invention, is to allow the drillpipe string to be raised through fractured formations, in addition to its normal function of stabilizing the drillpipes.
To this end, it is fitted with retractable abrasive blades which make it possible to re-drill the fractured formations when the drillpipes are being raised and to avoid jamming in the well.
The main claims relate to the novel function of the stabilizer, to the geometry of its elements and to the mechanism of opening the blades.

REFERENCES:
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patent: 3050122 (1962-08-01), Huitt et al.
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patent: 4693328 (1987-09-01), Furse et al.
patent: 4842083 (1989-06-01), Raney
patent: 5224558 (1993-07-01), Lee
patent: 5265675 (1993-11-01), Hearn et al.
patent: 5293945 (1994-03-01), Rosenhauch et al.
patent: 5339914 (1994-08-01), Lee
patent: 5341888 (1994-08-01), Deschutter

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