Wells – Processes – Cleaning or unloading well
Patent
1990-01-03
1991-12-31
Novosad, Stephen J.
Wells
Processes
Cleaning or unloading well
166173, 166174, 166312, 166384, E21B 3704
Patent
active
050763652
ABSTRACT:
A clean-out tool system for use with a oil well production tubing extending downward through a casing terminating in a production zone in the well bore, which zone is isolated by a packer and includes flow restricting debris to be cleaned out. A generally vertical, elongated, cylindrical tool body, having a relatively small diameter and a bore therein, is located down through the inner production tubing into the zone located at the end of a tubing string extending downward through the production tubing for communicating fluid pressure to the bore in the body. Four, peripherally spaced, elongated slots extend radially inward into the body with their longitudinal axes aligned with the longitudinal axis of the body and communicate with the bore is the body. An elongated blade is pivotally attached in each slot to the body, movable from a first configuration wherein the blade is positioned vertically within the slot, and a second, expanded configuration positioned radially outward in the zone. The blade is pivoted to its second configuration responsive to increasing pressure in the tubing string and is limited in its movement by the degree of an upper cam face onthe blade preventing any cutting engagement between the clean-out blades and the interior surfaces of the casing. The tubing string is moved longitudinally and rotated, rotating and moving the blade in its second configuration within the zone, loosening debris which is then removed by fluid circulation. The blades are provided in sets for different expansion sizes.
REFERENCES:
patent: Re21824 (1941-06-01), Lowrey
patent: 1271511 (1918-07-01), Gregory et al.
patent: 1282976 (1918-10-01), Stubbs et al.
patent: 2180452 (1939-11-01), Boulter
patent: 2218766 (1940-10-01), Parker
patent: 2284211 (1942-05-01), Justice
patent: 2328782 (1943-09-01), Bynum
patent: 2481637 (1949-09-01), Tancey
patent: 3050122 (1962-08-01), Huitt et al.
patent: 3073389 (1963-01-01), Conner
patent: 3220478 (1965-11-01), Kinzbach
patent: 3378072 (1968-04-01), Smith
patent: 3468373 (1969-09-01), Smith
patent: 3662828 (1972-05-01), Hutchison
patent: 4068711 (1978-01-01), Aulenbacher
patent: 4190113 (1980-02-01), Harrison
patent: 4518041 (1985-05-01), Zublin
patent: 4646826 (1987-03-01), Bailey et al.
patent: 4809793 (1989-03-01), Hailey
SPE 8209 Publication Entitled, "Concentric Workover Operations in Deep Sour Wells", by N. E. Fincher, 1979.
SPE 18256 Publication Entitled, "Innovative Technology in Producing Operations", by D. D. Hearn et al., 1988 p. 1.
SlimDril Brochure Entitled, "Advanced Drilling Motors Workover Systems PDC Bits Guidance Tools Borehole Instrumentation", Reprinted from 36th (1984-1985), Composite Catalog.
Hailey Charles D.
Novosad Stephen J.
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