Adjustable stabilizer

Details Adjustable stabilizer Adjustable stabilizer

1992-10-23

1994-06-07

Bui, Thuy M.

Boring or penetrating the earth

Means traveling with tool to constrain tool to bore along...

Sectional guide or shaft having means to lock sections in...

175 76, E21B 700

Patent

active

053181387

ABSTRACT:
A downhole adjustable blade stabilizer is disclosed for varying the position of stabilizer blades to provide an increased ability to control the direction of drilling. The adjustable blade stabilizer includes a plurality of blades mounted in an angled track to permit axial and radial movement of the blades. The blades are driven by a piston in response to a pressure differential created by a sufficient flow of drilling mud through the stabilizer. The stabilizer blades are retracted by a spring when the pressure differential is eliminated. A positioning piston limits blade extension to a desired position. The positioning piston moves in response to a command signal, and remains in place until a new command signal is received. By maintaining the positioning piston in a locked position, the position of the blades can be reset to the prior position after the loss of pressure differential. A measuring device is provided in association with the positioning piston to enable precise measurement of blade position.

REFERENCES:
patent: Re33751 (1991-11-01), Geczy et al.
patent: 3051255 (1962-08-01), Deely
patent: 3092188 (1963-06-01), Farris et al.
patent: 3123162 (1964-03-01), Rowley
patent: 3129776 (1964-04-01), Mann
patent: 3305771 (1967-02-01), Arps
patent: 3309656 (1967-03-01), Godbey
patent: 3370657 (1968-02-01), Antle
patent: 3593810 (1971-07-01), Fields
patent: 3888319 (1975-06-01), Bourne, Jr. et al.
patent: 3974886 (1976-08-01), Blake, Jr.
patent: 4027301 (1977-05-01), Mayer
patent: 4152545 (1979-05-01), Gilbreath, Jr. et al.
patent: 4185704 (1980-01-01), Nixon, Jr.
patent: 4241796 (1980-12-01), Green et al.
patent: 4270619 (1981-06-01), Base
patent: 4351037 (1982-09-01), Scherbatskoy
patent: 4357634 (1982-11-01), Chung
patent: 4388974 (1983-06-01), Jones, Jr. et al.
patent: 4394881 (1983-07-01), Shirley
patent: 4407377 (1983-10-01), Russell
patent: 4465147 (1984-08-01), Feenstra et al.
patent: 4491187 (1985-01-01), Russell
patent: 4515225 (1985-05-01), Dailey
patent: 4572305 (1986-02-01), Swietlik
patent: 4635736 (1987-01-01), Shirley
patent: 4635763 (1987-01-01), Omata
patent: 4638873 (1987-01-01), Welborn
patent: 4655289 (1987-04-01), Schoeffler
patent: 4683956 (1987-08-01), Russell
patent: 4763258 (1988-08-01), Engelder
patent: 4787093 (1988-11-01), Rorden
patent: 4807708 (1989-02-01), Forrest et al.
patent: 4821817 (1989-04-01), Cendre et al.
patent: 4844178 (1989-07-01), Cendre et al.
patent: 4848488 (1989-07-01), Cendre et al.
patent: 4848490 (1989-07-01), Anderson
patent: 4854403 (1989-08-01), Ostertag et al.
patent: 4905774 (1990-03-01), Wittrisch
patent: 4908804 (1990-03-01), Rorden
patent: 4947944 (1990-08-01), Coltman et al.
patent: 4951760 (1990-08-01), Cendre et al.
patent: 5038872 (1991-08-01), Shirley
patent: 5050692 (1991-09-01), Beimgraben
patent: 5065825 (1991-11-01), Bardin et al.
patent: 5070950 (1991-12-01), Cendre et al.
patent: 5139094 (1992-08-01), Prevedel et al.
patent: 5160925 (1992-11-01), Dailey et al.
patent: 5181576 (1993-01-01), Askew et al.
patent: 5186264 (1993-02-01), du Chaffaut
patent: 5224558 (1993-07-01), Lee
Offshore; Engineering Drilling/Production; Jeff Littleton, Nov. 1988; (1 pg.).

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