Wells – Brushing – scraping – cutting or punching-type cleaners – On tubing or casing
Reexamination Certificate
2005-02-08
2005-02-08
Bagnell, David (Department: 3672)
Wells
Brushing, scraping, cutting or punching-type cleaners
On tubing or casing
C166S311000, C015S104050
Reexamination Certificate
active
06851472
ABSTRACT:
A tubular scraper which can be assembled so that the blades will be either rotating or non-rotating, as desired. If the tubular scraper is assembled in the non-rotating configuration, and the blades becomes stuck in the casing, the drill string can be pulled upward to engage a clutch. Once the clutch is engaged, the scraper is converted to a rotating scraper, so that the drill string can be rotated to assist in dislodging the stuck scraper blades.
REFERENCES:
patent: 2072320 (1937-03-01), Thomas
patent: 2090822 (1937-08-01), Wright
patent: 2589534 (1952-03-01), Buttolph
patent: 2665887 (1954-01-01), Shelton
patent: 2693239 (1954-11-01), Vincent
patent: 2869827 (1959-01-01), Cook
patent: 3075590 (1963-01-01), Cook
patent: 3364998 (1968-01-01), Sable
patent: 4189000 (1980-02-01), Best
patent: 4558738 (1985-12-01), Howard, Sr.
patent: 4606417 (1986-08-01), Webb et al.
patent: 4798246 (1989-01-01), Best
patent: 6152220 (2000-11-01), Carmichael et al.
patent: 6227291 (2001-05-01), Carmichael et al.
patent: 6464010 (2002-10-01), Brown
patent: 20010022223 (2001-09-01), Howlett
patent: 20020005284 (2002-01-01), Allen
Baker Oil Tools, Fishing Services Technical Unit; Models “C-3” And “C-1” Roto-Vert Casing Scrapers; Jan. 15, 2002; 7 pages; Unit 4843, Index 500; Baker Hughes Incorporated; U.S.
Baker Oil Tools, Fishing Services Technical Unit; 360° “Clean Bore” Casing Scraper; Feb. 2, 2001; 7 pages; Unit 4560, Index 500, Baker Hughes Incorporated; U.S.
Smith; Non-Rotating Sleeve-Type Stabilizer; Drilco‘84-’85 Composite Catalog; date unknown; pp. 287-289; Smith International, Inc.; U.S.
Tri-State Oil Tools; Sleeve Stabilizer; 1995 General Catalog; Apr. 17, 2001; 7 pages, Baker Hughes Incorporated; U.S.
Hern Gregory Lee
McNicol James Michael
Bagnell David
Baker Hughes Incorporated
Spinks Gerald W.
Stephenson Daniel P
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