GB859753A - Wall scratcher for well bores - Google Patents
Wall scratcher for well boresInfo
- Publication number
- GB859753A GB859753A GB35908/57A GB3590857A GB859753A GB 859753 A GB859753 A GB 859753A GB 35908/57 A GB35908/57 A GB 35908/57A GB 3590857 A GB3590857 A GB 3590857A GB 859753 A GB859753 A GB 859753A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fingers
- collar
- sections
- rib
- ribs
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000000994 depressogenic effect Effects 0.000 abstract 1
- 229920001971 elastomer Polymers 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 229920001084 poly(chloroprene) Polymers 0.000 abstract 1
- 125000006850 spacer group Chemical group 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
- E21B37/02—Scrapers specially adapted therefor
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Automatic Assembly (AREA)
- Road Paving Structures (AREA)
- Scissors And Nippers (AREA)
Abstract
859,753. Borehole scrapers. BORG-WARNER CORPORATION. Nov. 18, 1957 [Dec. 11, 1956; Oct. 22, 1957], No. 35908/57. Class 85. A well scraper such as described in Specification 701,540 comprises a collar 1 in two detachably connected sections 2, 3 to which wire fingers are secured at spaced intervals, the sections being slit at intervals to provide protruding ribs 5. These ribs 5 together with the intervening web portions 6 form slots receiving T-shaped elements 7, Fig. 5, to secure the fingers 12 in position. Bundles of wires 13 encased in a coil spring 14 with their ends protruding are bent to a U-shape to form the fingers 12, each pair of fingers so formed being held by a tab 20 struck out of the collar and bent over the web of the U. Each element 7 has a boss 10 which bears against a rib 5 and acts as a spacer for the fingers 12, while the head of the element flexes the fingers 12 outwardly of the collar. The elements 7, which have seats 21 for the fingers 12, are preferably of flexible material such as rubber or neoprene and preferably the ribs 5 have indents 17 to grip the stems 8 of the elements 7. In a modification Fig. 7 the sections 2, 3 have hinges 31, 32 connected together by means of pins 34 and tabs 35 struck out of the sections are bent over the fingers 12 to secure them in position. Openings 36 formed by the struck-out tabs are enlarged to receive the bent portions of the fingers 12 and extend to a rib 38, which may be continuous throughout the length of the periphery of the collar 1 or may be interrupted and in each case flexes the fingers outwardly. Depressed seats may be formed in the rib 38 to receive the fingers 12.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US859753XA | 1956-12-11 | 1956-12-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB859753A true GB859753A (en) | 1961-01-25 |
Family
ID=22195172
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB35908/57A Expired GB859753A (en) | 1956-12-11 | 1957-11-18 | Wall scratcher for well bores |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB859753A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2179079A (en) * | 1985-08-15 | 1987-02-25 | William Hunt Engineers Limited | Well casing tools |
-
1957
- 1957-11-18 GB GB35908/57A patent/GB859753A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2179079A (en) * | 1985-08-15 | 1987-02-25 | William Hunt Engineers Limited | Well casing tools |
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