CN201567960U - Floating casing pipe installing pipe series - Google Patents
Floating casing pipe installing pipe series Download PDFInfo
- Publication number
- CN201567960U CN201567960U CN 200920272064 CN200920272064U CN201567960U CN 201567960 U CN201567960 U CN 201567960U CN 200920272064 CN200920272064 CN 200920272064 CN 200920272064 U CN200920272064 U CN 200920272064U CN 201567960 U CN201567960 U CN 201567960U
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- China
- Prior art keywords
- floating
- casing
- pipe
- pipes
- casing pipes
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- 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 - Lifetime
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Abstract
The utility model relates to a floating casing pipe installing pipe series which is mainly composed of a floating connecting hoop, an anti-rotation floating loop, two-stage floating shoes, casing pipes, rubber plugs and the like. When the casting pipes are installed, the floating connecting hoop is on a casing pipe column, and forms a temporary barrier in the casing pipes, the casing pipes of the floating connecting hoop are filled with air, and the casing pipes above the floating connecting hoops are filled with well drilling liquid. Thereby buoyancy of casing pipe columns below the floating connecting hoops is increased, the floating casing pipe installing pipe series realizes that the lower portion casting pipe series is located in the floating state in the process of installing the casing pipes, the resistance when the casing pipes are installed is lowered, positive pressure between the casing pipes and well walls is reduced, the installation depth of the casing pipes is improved, since the casing pipe columns above the floating connecting hoop are filled with the well drilling liquid, the pressure for pushing the casing pipes into well bores is increased, smooth installation of the casing pipes is realized, and technical guarantee is provided for the application of large pitch and large displacement wells in exploration and development.
Description
Technical field
The utility model relates to a kind of floating setting of casing pipe string, utilizes this pipe string to reduce the sleeve pipe normal pressure when being mainly used in setting of casing, makes sleeve pipe be lowered to the purpose stratum smoothly, belongs to the wellbore tool of oil drilling machine.
Background technology
In big displacement, the construction of high angle hole setting of casing,, make sleeve pipe be lowered to difficulty at present because the pit shaft frictional resistance is big, can't be smoothly down to the purpose stratum, be difficult to guarantee follow-up well cementing operation, and offseting a well of next step brought inconvenience, for normal construction operation has stayed hidden danger.
Summary of the invention
The purpose of this utility model has been to provide a kind of can reduce the pipe string that frictional resistance reduces the sleeve pipe normal pressure, and this pipe string makes sleeve pipe can be lowered to the purpose stratum smoothly, solves the cased technical barrier of above-mentioned high angle hole, extended reach well or horizontal well.
The utility model adopts following technical scheme, and thinking is that instruments such as floating coupling, anti-rotation float collar, twin-stage float shoe are installed on the bunch tube of high angle hole, extended reach well or horizontal well.Floating setting of casing pipe string of the present utility model is made of twin-stage float shoe, anti-rotation float collar, floating coupling and sleeve pipe, it is characterized in that by twin-stage float shoe upwards splicing sleeve, anti-rotation float collar, sleeve pipe, floating coupling and upper sleeve successively.
Floating setting of casing pipe string of the present utility model, to connecting one or two sleeve pipes the anti-rotation float collar, and the twin-stage float shoe fills cement to the sleeve pipe of anti-rotation float collar when going into the well, play the effect of stablizing the pipe of going into the well from the twin-stage float shoe for it
The anti-rotation float collar is full of air to not can of the sleeve pipe cement of installing between the floating coupling in the sleeve pipe, can play floating effect in the setting of casing process, and the anti-rotation float collar is determined according to well depth and layer position, target zone place to the radical of sleeve pipe between the floating coupling; The above upper sleeve of floating coupling is filled cement.Plug places well head to be used for floating setting of casing rear-guard for air and completion bruising in the sleeve pipe; Floating coupling of the present utility model has adopted the sleeve type structure design, can regulate according to the different adjustment shear pin quantity of descending well depth and open pressure.
Anti-rotation float collar of the present utility model, the inner employing of rigid body is threaded and has guaranteed enough interior latus rectums, and the drillability that the design of antiturning pitch has guaranteed the floating coupling sliding sleeve can shorten drilling time.
Anti-rotation plug of the present utility model has adopted the design of four paws antiturning pitch, has guaranteed its drillability, and fuse adopts the sleeve type design to guarantee the stability of fracture pressure simultaneously.
The operating principle of the utility model when setting of casing, at first use the twin-stage float shoe, on connect one or two sleeve pipes, insert the anti-rotation float collar then, fill mud in the casing section between anti-rotation float collar and the twin-stage float shoe, insert sleeve pipe successively according to design length, floating coupling is installed when arriving design attitude, continue setting of casing, fill mud in time for simultaneously the floating coupling upper sleeve, when sleeve pipe is lowered to target zone smoothly, well head is suppressed until the floating coupling sliding sleeve and is opened, and termination of pumping is replaced air in the casing section with mud, grouting a period of time, exhaust a period of time, so circulation all is full of mud until the anti-rotation float collar in floating coupling section sleeve pipe, throwing the I plug promotes on the floating coupling, low sleeve is located on the anti-rotation float collar, continue to suppress, break until the I plug, circulation is slowly set up in beginning, throw the cementing of II plug after circulation a period of time, inject cement according to design cement injection rate, then drop into the III plug, when the II plug sits on the former I plug, continue to suppress, the II plug breaks, and cement is by the anti-rotation float collar, the twin-stage float shoe enters annular space, when the III plug sits on former II plug position, realize bruising, finish well cementing operation.
Floating setting of casing pipe string of the present utility model has reduced Frictional Drag of Casing Running, safe and reliable, is used for big gradient, extended reach well can make sleeve pipe be lowered to the purpose stratum smoothly; Use the anti-rotation plug to reduce the brill plug time.
Description of drawings
Fig. 1 is floating setting of casing pipe string structure schematic diagram;
Among Fig. 1, twin-stage float shoe 1, annular space mud 2, anti-rotation float collar 3, air section sleeve pipe 4, floating coupling 5, upper sleeve 6, I plug 7, II plug 8, No. three plugs 9 of III, sleeve pipe 10, the borehole wall 11.
The specific embodiment
Below in conjunction with drawings and Examples syndeton of the present utility model is further specified, as shown in Figure 1, floating setting of casing pipe string is made of twin-stage float shoe 1, anti-rotation float collar 3, floating coupling 5 and sleeve pipe 10, it is characterized in that by twin-stage float shoe 1 upwards splicing sleeve 10, anti-rotation float collar 3, air section sleeve pipe 4, floating coupling 5 and upper sleeve 6 successively.
Above-mentioned floating setting of casing pipe string, to connecting a sleeve pipe the anti-rotation float collar 3, and the twin-stage float shoe is filled cement to the sleeve pipe between the anti-rotation float collar from twin-stage float shoe 1 for it.Anti-rotation float collar 3 is full of air in air section sleeve pipe 4 between the floating coupling 5.
Fill cement in the upper sleeve 6 that floating coupling 5 connects.Plug (7,8,9) places well head.
Claims (5)
1. a floating setting of casing pipe string is made of twin-stage float shoe (1), anti-rotation float collar (3), floating coupling (5) and sleeve pipe (10), it is characterized in that by twin-stage float shoe (1) upwards splicing sleeve (10), anti-rotation float collar (3), air section sleeve pipe (4), floating coupling (5) and upper sleeve (6) successively.
2. floating setting of casing pipe string as claimed in claim 1 is characterized in that from twin-stage float shoe (1) to connecting a sleeve pipe the anti-rotation float collar (3).
3. floating setting of casing pipe string as claimed in claim 1 is characterized in that twin-stage float shoe (1) fills cement to the sleeve pipe between anti-rotation float collar (3).
4. floating setting of casing pipe string as claimed in claim 1 is characterized in that anti-rotation float collar (3) is full of air in air section sleeve pipe (4) between the floating coupling (5).
5. floating setting of casing pipe string as claimed in claim 1 is characterized in that filling cement in the upper sleeve (6) that floating coupling (5) connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920272064 CN201567960U (en) | 2009-12-16 | 2009-12-16 | Floating casing pipe installing pipe series |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920272064 CN201567960U (en) | 2009-12-16 | 2009-12-16 | Floating casing pipe installing pipe series |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201567960U true CN201567960U (en) | 2010-09-01 |
Family
ID=42660247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920272064 Expired - Lifetime CN201567960U (en) | 2009-12-16 | 2009-12-16 | Floating casing pipe installing pipe series |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201567960U (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943648A (en) * | 2012-10-10 | 2013-02-27 | 中国石油集团长城钻探工程有限公司 | Floating tool applied to screen pipe well completion |
| CN105545260A (en) * | 2015-12-30 | 2016-05-04 | 中国石油天然气股份有限公司 | Method and device for lowering casing string |
| CN105822268A (en) * | 2016-05-27 | 2016-08-03 | 成都北方石油勘探开发技术有限公司 | Horizontal well completion pipe string for middle-shallow reservoir |
| CN105840135A (en) * | 2016-05-27 | 2016-08-10 | 成都北方石油勘探开发技术有限公司 | Production tubing |
| CN105888574A (en) * | 2016-05-27 | 2016-08-24 | 成都北方石油勘探开发技术有限公司 | Well completion pipe string |
| CN109403911A (en) * | 2017-08-15 | 2019-03-01 | 中国石油化工股份有限公司 | Well cementation tubing string and cementing method |
| CN109611061A (en) * | 2018-11-29 | 2019-04-12 | 中国海洋石油集团有限公司 | A method of floating tripping in screen casing |
| CN109611060A (en) * | 2018-11-26 | 2019-04-12 | 中国海洋石油集团有限公司 | A kind of floating screen casing |
| CN109681120A (en) * | 2018-12-21 | 2019-04-26 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of ultra-long horizontal section casing continues tripping in method |
| CN110374530A (en) * | 2019-07-16 | 2019-10-25 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A method of increasing tubing string depth of setting by changing tube fluid density |
| CN114109300A (en) * | 2020-08-31 | 2022-03-01 | 中国石油天然气股份有限公司 | Well cementation method of horizontal well |
| CN114909106A (en) * | 2022-05-07 | 2022-08-16 | 中石化石油工程技术服务有限公司 | Well cementation tool and well cementation method for shale gas horizontal well |
-
2009
- 2009-12-16 CN CN 200920272064 patent/CN201567960U/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943648A (en) * | 2012-10-10 | 2013-02-27 | 中国石油集团长城钻探工程有限公司 | Floating tool applied to screen pipe well completion |
| CN105545260A (en) * | 2015-12-30 | 2016-05-04 | 中国石油天然气股份有限公司 | Method and device for lowering casing string |
| CN105545260B (en) * | 2015-12-30 | 2018-03-13 | 中国石油天然气股份有限公司 | A kind of casing string tripping in method and device |
| CN105822268A (en) * | 2016-05-27 | 2016-08-03 | 成都北方石油勘探开发技术有限公司 | Horizontal well completion pipe string for middle-shallow reservoir |
| CN105840135A (en) * | 2016-05-27 | 2016-08-10 | 成都北方石油勘探开发技术有限公司 | Production tubing |
| CN105888574A (en) * | 2016-05-27 | 2016-08-24 | 成都北方石油勘探开发技术有限公司 | Well completion pipe string |
| CN109403911A (en) * | 2017-08-15 | 2019-03-01 | 中国石油化工股份有限公司 | Well cementation tubing string and cementing method |
| CN109403911B (en) * | 2017-08-15 | 2021-09-24 | 中国石油化工股份有限公司 | Well cementing pipe column and well cementing method |
| CN109611060A (en) * | 2018-11-26 | 2019-04-12 | 中国海洋石油集团有限公司 | A kind of floating screen casing |
| CN109611061A (en) * | 2018-11-29 | 2019-04-12 | 中国海洋石油集团有限公司 | A method of floating tripping in screen casing |
| CN109681120A (en) * | 2018-12-21 | 2019-04-26 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of ultra-long horizontal section casing continues tripping in method |
| CN110374530A (en) * | 2019-07-16 | 2019-10-25 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A method of increasing tubing string depth of setting by changing tube fluid density |
| CN114109300A (en) * | 2020-08-31 | 2022-03-01 | 中国石油天然气股份有限公司 | Well cementation method of horizontal well |
| CN114109300B (en) * | 2020-08-31 | 2023-12-22 | 中国石油天然气股份有限公司 | Cementing method of horizontal well |
| CN114909106A (en) * | 2022-05-07 | 2022-08-16 | 中石化石油工程技术服务有限公司 | Well cementation tool and well cementation method for shale gas horizontal well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100901 |
|
| CX01 | Expiry of patent term |