GB682292A - A centring device for centring conduits and the like in well bores - Google Patents
A centring device for centring conduits and the like in well boresInfo
- Publication number
- GB682292A GB682292A GB3025050A GB3025050A GB682292A GB 682292 A GB682292 A GB 682292A GB 3025050 A GB3025050 A GB 3025050A GB 3025050 A GB3025050 A GB 3025050A GB 682292 A GB682292 A GB 682292A
- Authority
- GB
- United Kingdom
- Prior art keywords
- collar
- centring
- springs
- stop
- 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
- 230000000712 assembly Effects 0.000 abstract 2
- 238000000429 assembly Methods 0.000 abstract 2
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
682,292. Casing centralizers. BAKER OIL TOOLS, Inc. Dec. 11, 1950, No. 30250/50. Class 85 In a device for centring well conduits B and C and the like in well bores, bowed leaf springs 13 are secured to and between a pair of longitudinallyspaced cage assemblies slidably mounted on a conduit, said assemblies each having disposed adjacent the medial portions 13b of the springs an inner stop collar 15 that is connected, by a plurality of rigid circularly spaced bars 16, to an outer collar 14 to which one set of ends 13 of the bowed springs are attached. The distance between the stop collars is slightly greater than the length of a stop means, such as a conduit connector collar D, which is positioned therebetween. The collars are sectional, the sections being hinged together at one side and having connecting means on the other side for joining them together. The connecting means may be a fluted pin which is driven into the common bore formed in the interlocking lugs of the two sections of a collar so that it cuts its way into the walls of the bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3025050A GB682292A (en) | 1950-12-11 | 1950-12-11 | A centring device for centring conduits and the like in well bores |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3025050A GB682292A (en) | 1950-12-11 | 1950-12-11 | A centring device for centring conduits and the like in well bores |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB682292A true GB682292A (en) | 1952-11-05 |
Family
ID=10304662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3025050A Expired GB682292A (en) | 1950-12-11 | 1950-12-11 | A centring device for centring conduits and the like in well bores |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB682292A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1017112B (en) * | 1955-03-11 | 1957-10-10 | Soeding & Halbach J C | Device for guiding the drill rod in boreholes |
| GB2421261A (en) * | 2002-11-23 | 2006-06-21 | Casetech International Inc | Dual diameter and rotating centralizer/sub |
| US7156171B2 (en) | 2000-09-06 | 2007-01-02 | Casetech International, Inc. | Dual diameter and rotating centralizer/sub |
| CN105781443A (en) * | 2016-04-29 | 2016-07-20 | 中国石油大学(北京) | Variable-diameter centering device |
| EP3400361A4 (en) * | 2016-01-08 | 2019-08-28 | Blackhawk Specialty Tools, LLC | Method and apparatus for wellbore centralization |
-
1950
- 1950-12-11 GB GB3025050A patent/GB682292A/en not_active Expired
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1017112B (en) * | 1955-03-11 | 1957-10-10 | Soeding & Halbach J C | Device for guiding the drill rod in boreholes |
| 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 |
| GB2421261A (en) * | 2002-11-23 | 2006-06-21 | 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 |
| EP3400361A4 (en) * | 2016-01-08 | 2019-08-28 | Blackhawk Specialty Tools, LLC | Method and apparatus for wellbore centralization |
| CN105781443A (en) * | 2016-04-29 | 2016-07-20 | 中国石油大学(北京) | Variable-diameter centering device |
| CN105781443B (en) * | 2016-04-29 | 2018-06-29 | 中国石油大学(北京) | A kind of reducing centralizer |
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