Boring or penetrating the earth – With tool shaft detail – Shaft carried guide or protector
Patent
1988-04-08
1989-08-08
Novosad, Stephen J.
Boring or penetrating the earth
With tool shaft detail
Shaft carried guide or protector
166241, E21B 700, E21B 1710
Patent
active
048544035
ABSTRACT:
A stabilizer for deep well drilling tools is disclosed which includes a tubular outer casing having a plurality of slit openings distributed around its periphery with a tubular adjusting mandrel supported in the casing for relative axial movement therewith in response to well fluid pressure applied to the well. A separate elongated ribbed body is movably mounted in each slit opening. Each of the ribbed bodies has a rear wedge face facing opposite to the relative motion of the mandrel which cooperates with a separate mating wedge face on the mandrel such that the ribbed body moves radially outwardly in its respective slit opening upon contact between said mating wedges upon axial movement of the mandrel relative to the casing in response to well fluid pressure applied to the well. Also, each end of each ribbed body has an axially projecting guide projection which terminates in a reduced dimension at its end. Each guide projection has a separate securing piece adapted to be inserted through a slit from outside the casing to hold its guide projection in the casing. Each securing piece has the basic shape of a cylindrical segment and can be inserted into the casing so it is flush therewith. A separate locking pin secures each securing piece in the casing.
REFERENCES:
patent: 3051255 (1962-08-01), Deely
patent: 3123162 (1964-03-01), Rowley
patent: 3370657 (1968-02-01), Antle
patent: 4270619 (1981-06-01), Base
patent: 4407377 (1983-10-01), Russell
patent: 4693328 (1987-09-01), Furse et al.
patent: 4776397 (1988-10-01), Akkerman
Ostertag Alfred
Schillinger Hans
Eastman Christensen Company
Novosad Stephen J.
LandOfFree
Stabilizer for deep well drilling tools does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Stabilizer for deep well drilling tools, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stabilizer for deep well drilling tools will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-899023