GB532468A - Improvements in plugs for use in cementing well casings - Google Patents
Improvements in plugs for use in cementing well casingsInfo
- Publication number
- GB532468A GB532468A GB2208639A GB2208639A GB532468A GB 532468 A GB532468 A GB 532468A GB 2208639 A GB2208639 A GB 2208639A GB 2208639 A GB2208639 A GB 2208639A GB 532468 A GB532468 A GB 532468A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plugs
- washer
- cap
- integral
- well casings
- 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
- 229920001971 elastomer Polymers 0.000 abstract 2
- 229920001342 Bakelite® Polymers 0.000 abstract 1
- 239000004637 bakelite Substances 0.000 abstract 1
- 239000002023 wood Substances 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
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)
- Prostheses (AREA)
Abstract
532,468. Cementing well casings. DYER, Z. A., LAMB, C., and RADFORD, D. R. July 29, 1939, No. 22086. [Class 85] Relates to lower plugs for use in cementing casing in wells. The plugs may be formed of rubber, "Bakelite" R.T.M., wood, &c. and comprise a cylindrical body 70, Fig. 6, with a central annular channel 32 and a groove 76 in which is a rubber washer 78 of greater outside diameter than the body and less normal inside diameter than the base of the groove 76 ; longitudinal passages 40 are formed in the outer surfaces of the body and central cavities 50 may be formed in the ends. The body may be integral, or formed in two parts with a threaded connection 74, or a frictional connection of smooth-walled or annularly corrugated parts. In Fig. 7, the upper part of the plug is replaced by a cap 80 which may be integral with the lower part or threaded thereto ; alternatively, the cap may be omitted, the washer then being vulcanized &c. to the lower part. Such plugs may be used in tandem. In Fig. 8, the washer has an inner flange 90 engaging corresponding grooves in the body ; such a washer may be used in the form of Fig. 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2208639A GB532468A (en) | 1939-07-29 | 1939-07-29 | Improvements in plugs for use in cementing well casings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2208639A GB532468A (en) | 1939-07-29 | 1939-07-29 | Improvements in plugs for use in cementing well casings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB532468A true GB532468A (en) | 1941-01-24 |
Family
ID=10173692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2208639A Expired GB532468A (en) | 1939-07-29 | 1939-07-29 | Improvements in plugs for use in cementing well casings |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB532468A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999014461A2 (en) * | 1997-09-12 | 1999-03-25 | Weatherford/Lamb, Inc. | A plug for use in wellbore operations, an apparatus for receiving said plug, a plug landing system and a method for cementing tubulars in a wellbore |
| US6082451A (en) * | 1995-04-26 | 2000-07-04 | Weatherford/Lamb, Inc. | Wellbore shoe joints and cementing systems |
-
1939
- 1939-07-29 GB GB2208639A patent/GB532468A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6056053A (en) * | 1995-04-26 | 2000-05-02 | Weatherford/Lamb, Inc. | Cementing systems for wellbores |
| US6082451A (en) * | 1995-04-26 | 2000-07-04 | Weatherford/Lamb, Inc. | Wellbore shoe joints and cementing systems |
| WO1999014461A2 (en) * | 1997-09-12 | 1999-03-25 | Weatherford/Lamb, Inc. | A plug for use in wellbore operations, an apparatus for receiving said plug, a plug landing system and a method for cementing tubulars in a wellbore |
| WO1999014461A3 (en) * | 1997-09-12 | 1999-06-03 | Weatherford Lamb | A plug for use in wellbore operations, an apparatus for receiving said plug, a plug landing system and a method for cementing tubulars in a wellbore |
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