GB667707A - Improvements in or relating to a wall scratcher for wells - Google Patents
Improvements in or relating to a wall scratcher for wellsInfo
- Publication number
- GB667707A GB667707A GB67350A GB67350A GB667707A GB 667707 A GB667707 A GB 667707A GB 67350 A GB67350 A GB 67350A GB 67350 A GB67350 A GB 67350A GB 667707 A GB667707 A GB 667707A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carrier
- scratchers
- clip
- beneath
- 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
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)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
667,707. Well scratchers. WRIGHT, K. A. Jan. 10, 1950. No. 673/50. Class 85. A well scratcher 12 for mounting on a well pipe or casing 10 comprises one or more carrier strips 13 each of which has formed thereon a number of outwardly projecting ribs 14 between which are secured to the carrier spring wire scratchers 17 each having a finger 18, one end of which may be bent at an angle whilst the other end is formed as a coiled spring 20 with a portion 21 extending from the spring to rest on' the carrier beneath and in a groove formed in a clip 24 which is welded to the carrier. The portion 22 beneath the clip is bent at an angle to the rest of the portion 21. Apertures 16 extend through the carrier adjacent the ribs to receive and provide clearance for movement of the coiled springs of the scratchers when said fingers are flexed, whilst the ribs protect the springs from contact with the sides of the bore. The scratchers may be mounted in pairs on the carrier being joined together beneath the clip. The carrier strips may extend longitudinally or circumferentially of the'supporting pipe 10, and in the latter case may be in the form of a helix or a portion of a cylinder or a sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB67350A GB667707A (en) | 1950-01-10 | 1950-01-10 | Improvements in or relating to a wall scratcher for wells |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB67350A GB667707A (en) | 1950-01-10 | 1950-01-10 | Improvements in or relating to a wall scratcher for wells |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB667707A true GB667707A (en) | 1952-03-05 |
Family
ID=9708524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB67350A Expired GB667707A (en) | 1950-01-10 | 1950-01-10 | Improvements in or relating to a wall scratcher for wells |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB667707A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2735495A (en) * | 1956-02-21 | Well bore scratcher | ||
| US2808112A (en) * | 1953-03-27 | 1957-10-01 | Sr Jesse E Hall | Scratchers |
| CN112282700A (en) * | 2020-12-10 | 2021-01-29 | 山东辛丁技术有限公司 | Mud scraper |
-
1950
- 1950-01-10 GB GB67350A patent/GB667707A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2735495A (en) * | 1956-02-21 | Well bore scratcher | ||
| US2808112A (en) * | 1953-03-27 | 1957-10-01 | Sr Jesse E Hall | Scratchers |
| CN112282700A (en) * | 2020-12-10 | 2021-01-29 | 山东辛丁技术有限公司 | Mud scraper |
| CN112282700B (en) * | 2020-12-10 | 2022-04-12 | 山东辛丁技术有限公司 | Mud scraper |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1110840A (en) | Improvements in centralizer devices for casings in boreholes | |
| US2506405A (en) | Wall scratcher for wells | |
| GB667707A (en) | Improvements in or relating to a wall scratcher for wells | |
| IT1116733B (en) | WELL PUMP, PARTICULARLY FOR PETROLEUM WELLS | |
| US1774905A (en) | Percussive tool | |
| US3128827A (en) | Casing centralizer with well bore and casing scraping means | |
| US3044554A (en) | Casing centralizer | |
| GB1375773A (en) | ||
| DK61676C (en) | Gas purifier, designed as Cyclone, for Internal Combustion Engines. | |
| US2674317A (en) | Scratcher for wells | |
| GB698464A (en) | Improvements in and relating to devices for centralizing casing in boreholes | |
| GB1014736A (en) | Improvements in and relating to devices for centralizing casing in boreholes | |
| GB1156710A (en) | Improvements in or relating to Devices for Centralising Pipe in Borings. | |
| GB664905A (en) | Improvements in and relating to devices for centralizing casing in boreholes | |
| ES333919A1 (en) | Fastening device | |
| GB1130132A (en) | Improvements in and relating to tool holders | |
| GB721960A (en) | Well bore scratcher device | |
| GB682489A (en) | A centring device for centring conduits and the like in bore holes | |
| US2371139A (en) | Propellent chakge holder | |
| GB725866A (en) | Improvements in scratchers or abrading devices for well bores | |
| GB761486A (en) | Improvements in guiding and serating devices for attachment to oil well and like pump rods | |
| GB1532853A (en) | Devices for centralising pipes in borings | |
| SU128401A1 (en) | Shoulder for drilling inclined wells | |
| US1349726A (en) | Roller-distributer | |
| SU489909A1 (en) | Pipe Connecting Device |