GB650286A - Improvements in methods and means for guiding floating and cementing well casing in bored holes - Google Patents
Improvements in methods and means for guiding floating and cementing well casing in bored holesInfo
- Publication number
- GB650286A GB650286A GB16757/48A GB1675748A GB650286A GB 650286 A GB650286 A GB 650286A GB 16757/48 A GB16757/48 A GB 16757/48A GB 1675748 A GB1675748 A GB 1675748A GB 650286 A GB650286 A GB 650286A
- Authority
- GB
- United Kingdom
- Prior art keywords
- casing
- plug
- fluid
- shoe
- cement
- 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
- 239000012530 fluid Substances 0.000 abstract 6
- 239000004568 cement Substances 0.000 abstract 4
- 238000005406 washing Methods 0.000 abstract 3
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 238000003825 pressing Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
- E21B33/14—Methods or devices for cementing, for plugging holes, crevices or the like for cementing casings into boreholes
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)
- Earth Drilling (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
650,286. Well boring. SCHNITTER, S. B. June 22, 1948, No. 16757. Convention date, June 27, 1947. [Class 85] A well pipe or casing 3 is floated into a bore 2 and has secured on its lower end by shear pins 19 a shoe 4 in which is formed a one-way valve that prevents entry of water into the casing. When in position, a ball 16 is dropped down onto a seat formed in the shoe so closing the fluid passage through the shoe and a head 6 secured to the casing, the head normally being separated by valves from the fluid flow circuit to the casing formed by the pipe 13a, valve 11 and T-connection 9. On applying pressure, the shoe is blown clear of the casing so permitting washing fluid to be pumped through the casing into the borehole without encountering any major restriction to flow. During this washing process, the head is opened up to receive a plug 14, then closed. By opening valves 7, 12 and closing valve 11, this plug is forced into the casing. The valves are then reversed and cement pumped into the casing onto the plug 14, whilst a second plug 14a having attached to it a a valve 51 is placed in the now isolated head. When the desired quantity of cement has entered the casing, the second plug is entered into the casing in a manner similar to the first so that the cement is positively separated from the washing fluid. The cement is forced down the casing and enters the bore when the lowermost plug falls clear and the valve unit on the second plug engages and locks onto a seat on a venturi-like restriction 5 positioned in the casing through which both plugs have passed so preventing movement of fluid in either direction. The resilient plugs have a number of peripheral flanges and a hollow interior which is open at each end, the openings being provided with ferrules into which fit corks that are expelled by the pressure of the fluid within the plug when it is being distorted on being forced past the restriction in the casing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US650286XA | 1947-06-27 | 1947-06-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB650286A true GB650286A (en) | 1951-02-21 |
Family
ID=22059863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB16757/48A Expired GB650286A (en) | 1947-06-27 | 1948-06-22 | Improvements in methods and means for guiding floating and cementing well casing in bored holes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB650286A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114075944A (en) * | 2020-08-14 | 2022-02-22 | 中国石油化工股份有限公司 | Device and method for closing circulation hole of stage cementing device |
-
1948
- 1948-06-22 GB GB16757/48A patent/GB650286A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114075944A (en) * | 2020-08-14 | 2022-02-22 | 中国石油化工股份有限公司 | Device and method for closing circulation hole of stage cementing device |
| CN114075944B (en) * | 2020-08-14 | 2024-03-08 | 中国石油化工股份有限公司 | Device and method for closing circulation hole of stage cementing device |
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