GB682489A - A centring device for centring conduits and the like in bore holes - Google Patents
A centring device for centring conduits and the like in bore holesInfo
- Publication number
- GB682489A GB682489A GB2965350A GB2965350A GB682489A GB 682489 A GB682489 A GB 682489A GB 2965350 A GB2965350 A GB 2965350A GB 2965350 A GB2965350 A GB 2965350A GB 682489 A GB682489 A GB 682489A
- Authority
- GB
- United Kingdom
- Prior art keywords
- centring
- conduit
- collars
- welded
- conduits
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1014—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well
- E21B17/1021—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well with articulated arms or arcuate springs
- E21B17/1028—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well with articulated arms or arcuate springs with arcuate springs only, e.g. baskets with outwardly bowed strips for cementing operations
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
682,489. Casing centralizers. BAKER OIL TOOLS, Inc. Dec. 4, 1950, No. 29653/50. Class 85 A device A disposed about a conduit B or the like for centring the same in a well bore C comprises a pair of spaced collars 10, 11 freely mounted on the conduit and having circumferentially continuous annular ends 15, 17 between which are disposed circularly spaced slots 13 and outwardly bowed spring members 12 extending between and over the inner opposed ends 15 of the collars into the slots to be welded to the outer ends 16 thereof. Between the collars a stop ring 21 is welded to the conduit so that the conduit has only a limited axial motion with respect to the centring device before the device is pulled by the conduit through the bore hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2965350A GB682489A (en) | 1950-12-04 | 1950-12-04 | A centring device for centring conduits and the like in bore holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2965350A GB682489A (en) | 1950-12-04 | 1950-12-04 | A centring device for centring conduits and the like in bore holes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB682489A true GB682489A (en) | 1952-11-12 |
Family
ID=10294981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2965350A Expired GB682489A (en) | 1950-12-04 | 1950-12-04 | A centring device for centring conduits and the like in bore holes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB682489A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5426842A (en) * | 1993-12-29 | 1995-06-27 | American Cast Iron Pipe Company | Method of assembling bell and spigot pipe joints |
| GB2396172A (en) * | 2002-11-23 | 2004-06-16 | Casetech International Inc | Centraliser including a collar with a groove for limiting longitudinal movement |
| US7156171B2 (en) | 2000-09-06 | 2007-01-02 | Casetech International, Inc. | Dual diameter and rotating centralizer/sub |
-
1950
- 1950-12-04 GB GB2965350A patent/GB682489A/en not_active Expired
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5426842A (en) * | 1993-12-29 | 1995-06-27 | American Cast Iron Pipe Company | Method of assembling bell and spigot pipe joints |
| US7140432B2 (en) | 2000-09-06 | 2006-11-28 | Casetech International, Inc. | Dual diameter and rotating centralizer/sub and method |
| US7156171B2 (en) | 2000-09-06 | 2007-01-02 | Casetech International, Inc. | Dual diameter and rotating centralizer/sub |
| US7182131B2 (en) | 2000-09-06 | 2007-02-27 | Casetech International, Inc. | Dual diameter and rotating centralizer/sub and method |
| GB2396172A (en) * | 2002-11-23 | 2004-06-16 | Casetech International Inc | Centraliser including a collar with a groove for limiting longitudinal movement |
| GB2421261A (en) * | 2002-11-23 | 2006-06-21 | Casetech International Inc | Dual diameter and rotating centralizer/sub |
| GB2421528A (en) * | 2002-11-23 | 2006-06-28 | Casetech International Inc | Dual diameter and rotating centralizer/sub |
| GB2396172B (en) * | 2002-11-23 | 2007-05-30 | Casetech International Inc | Dual diameter and rotating centralizer/sub |
| GB2421528B (en) * | 2002-11-23 | 2007-05-30 | Casetech International Inc | Dual diameter and rotating centralizer/sub |
| GB2421261B (en) * | 2002-11-23 | 2007-05-30 | Casetech International Inc | Dual diameter and rotating centralizer/sub |
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