CN203796217U - Compression packer for well cementation - Google Patents
Compression packer for well cementation Download PDFInfo
- Publication number
- CN203796217U CN203796217U CN201420191847.8U CN201420191847U CN203796217U CN 203796217 U CN203796217 U CN 203796217U CN 201420191847 U CN201420191847 U CN 201420191847U CN 203796217 U CN203796217 U CN 203796217U
- Authority
- CN
- China
- Prior art keywords
- packing element
- well cementation
- groove
- protection box
- compression packer
- 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 - Lifetime
Links
- 230000006835 compression Effects 0.000 title claims abstract description 18
- 238000007906 compression Methods 0.000 title claims abstract description 18
- 238000012856 packing Methods 0.000 claims description 34
- 238000007789 sealing Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- IXSZQYVWNJNRAL-UHFFFAOYSA-N etoxazole Chemical compound CCOC1=CC(C(C)(C)C)=CC=C1C1N=C(C=2C(=CC=CC=2F)F)OC1 IXSZQYVWNJNRAL-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Gasket Seals (AREA)
Abstract
The utility model provides a compression packer for well cementation, which comprises a main body, a rubber barrel and a limit device, wherein a saw teeth clamping groove is formed in the main body; the main body is sleeved with the rubber barrel; the limit device comprises a protection box and an elastic retainer ring; the retainer ring is mounted in the protection box; the limit device is mounted at one end of the rubber barrel; the main body is sleeved with both the elastic retainer ring and the protection box; the rubber barrel is prevented from deblocking through the coordination of the elastic retainer ring and the saw teeth neck after the swell sealing of the rubber barrel. With the adoption of the compression packer for well cementation, permanent sealing can be realized.
Description
Technical field
The utility model relates to drilling technique field, in particular to a kind of well cementation compression packer.
Background technology
Conventionally packer is without permanent packing, and even needing can deblocking, carries out pipe string and trips out operation.Once setting but well cementation requires with compression packer, must form permanent packing effect, must not be because of pressure release in pit shaft, in pit shaft under the effect of other pressure and the tension force of packing element own and deblocking.Therefore need to once make packing element crimp, just no longer be subject to the impact of wellbore pressure for compression external casing packer design packing element anti-receding device for well cementation, realize sealed-for-life.But well cementation is with compression packer owing to limited by particular service requirement, and each part design limited space, can not adopt baroque system.
Therefore, need a kind of new well cementation compression packer, can realize permanent envelope every.
Utility model content
Technical problem to be solved in the utility model is, a kind of new well cementation compression packer is provided, can realize permanent envelope every.
In view of this; the utility model provides a kind of well cementation compression packer; comprise body, packing element and stopping means; described body is provided with sawtooth draw-in groove; described packing element is set on described body; described stopping means comprises a protection box and an elastic collar; described elastic collar is arranged in described protection box; described stopping means is arranged on one end of described packing element and described elastic collar and described protection box and is all set on described body, and the described packing element described elastic collar after envelope that rises coordinates to limit described packing element deblocking with described sawtooth draw-in groove.
In this technical scheme, protection box and elastic collar are arranged on the left side of packing element, between packing element and other assembly, adopt special construction design flexibility collar to coordinate with sawtooth draw-in groove, coordinate other devices of whole system to realize the sealed-for-life of packing element; After packing element rises by envelope, stop under the effect of packer other pressure and tension force of packing element own in pit shaft and deblocking, have simple in structure, easy to process, the feature that anti-back power is large.Sawtooth draw-in groove adopts the cooperation dovetail groove design identical with elastic collar, this kind of design is without using excessive groove depth just can obtain larger locked power, thereby can guarantee packer body intensity, after sawtooth draw-in groove coordinates with spacing jump ring, form forever locked, owing to adopting dovetail groove design, spacing jump ring can be under the effect of upper thrust distending, lose limit effect, tooth draw-in groove is according to design needs, the demand that adopts multilayer tooth slot structure to rise and seal to adapt to different hole diameters.Well cementation in the technical program utilizes stopping means to realize the object of packing element anti-back with compression packer, and it is simple in structure, easy to process.
As a kind of preferred embodiment, in described sawtooth draw-in groove, two inclined-planes of sawtooth are respectively 29～31 ° and 69～71 ° with respect to the angle of inclination of described body 1, for example, adopt the cooperation of 30 °, according to practical experience, and this angular range best results.
Accompanying drawing explanation
Fig. 1 and Fig. 2 are the structural representations under compression packer different conditions for new well cementation according to utility model embodiment;
Fig. 3 is the enlarged diagram that in Fig. 2, sawtooth draw-in groove coordinates with elastic collar.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.It should be noted that, in the situation that not conflicting, the application's embodiment and the feature in embodiment can combine mutually.
As shown in Figure 1, according to the well cementation compression packer of embodiment of the present utility model, comprise body 1, packing element 5 and stopping means, described body 1 is provided with sawtooth draw-in groove 2, described packing element 5 is set on described body 1, described stopping means comprises a protection box 4 and an elastic collar 3, described elastic collar 3 is arranged in described protection box 4, described stopping means is arranged on one end of described packing element 5 and described elastic collar 3 and described protection box 4 and is all set on described body 1, described packing element 5 rise envelope after described elastic collar 3 coordinate to limit described packing element 5 deblockings with described sawtooth draw-in groove 2.
In this technical scheme, protection box 4 and elastic collar 3 are arranged on the left side of packing element 5, between packing element 5 and other assembly 6, packing element 5 rises to be honored as a queen and forms the state shown in Fig. 2, elastic collar 3 coordinates other assembly 6 in compression packer for well cementation that withstands left side with sawtooth draw-in groove 2, restriction packing element 5 deblockings, realize forever setting; Adopt special construction design flexibility collar 3 to coordinate with sawtooth draw-in groove 2, coordinate other devices of whole system to realize the sealed-for-life of packing element; After packing element rises by envelope, stop under the effect of packer other pressure and tension force of packing element own in pit shaft and deblocking, have simple in structure, easy to process, the feature that anti-back power is large.Sawtooth draw-in groove 2 adopts the cooperation dovetail groove design identical with elastic collar 3, this kind of design is without using excessive groove depth just can obtain larger locked power, thereby can guarantee packer body intensity, after sawtooth draw-in groove 2 coordinates with spacing jump ring 3, form forever locked, owing to adopting dovetail groove design, spacing jump ring 3 can be under the effect of upper thrust distending, lose limit effect, tooth draw-in groove 2 is according to design needs, the demand that adopts multilayer tooth slot structure to rise and seal to adapt to different hole diameters.Well cementation in the technical program utilizes stopping means to realize the object of packing element anti-back with compression packer, and it is simple in structure, easy to process.
As a kind of preferred embodiment, in described sawtooth draw-in groove 2, two inclined-planes of sawtooth are respectively 29～31 ° and 69～71 ° with respect to the angle of inclination of described body 1, for example, adopt in Fig. 3 the cooperation of 30 °, according to practical experience, and this angular range best results.
In sum, content of the present utility model is not limited in the above-described embodiment, and those skilled in the art can propose other embodiment within technological guidance's thought of the present utility model, but within this embodiment is included in scope of the present utility model.
Claims (2)
1. a well cementation compression packer, it is characterized in that, comprise body (1), packing element (5) and stopping means, described body (1) outer wall is provided with sawtooth draw-in groove (2), described packing element (5) is set on described body (1), described stopping means comprises that a protection box (4) and is arranged on the elastic collar (3) in described protection box (4), described stopping means is arranged on one end of described packing element (5) and described elastic collar (3) and described protection box (4) and is all set on described body (1), described packing element (5) rise envelope after described elastic collar (3) coordinate with described sawtooth draw-in groove (2), limit described packing element (5) deblocking.
2. well cementation compression packer according to claim 1, is characterized in that, in described sawtooth draw-in groove (2), two inclined-planes of sawtooth are respectively 29～31 ° and 69～71 ° with respect to the angle of inclination of described body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420191847.8U CN203796217U (en) | 2014-04-18 | 2014-04-18 | Compression packer for well cementation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420191847.8U CN203796217U (en) | 2014-04-18 | 2014-04-18 | Compression packer for well cementation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203796217U true CN203796217U (en) | 2014-08-27 |
Family
ID=51378438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420191847.8U Expired - Lifetime CN203796217U (en) | 2014-04-18 | 2014-04-18 | Compression packer for well cementation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203796217U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178882A (en) * | 2015-10-29 | 2015-12-23 | 中国石油集团渤海钻探工程有限公司 | Elbow-type dual-thrust hydraulic centralizer |
-
2014
- 2014-04-18 CN CN201420191847.8U patent/CN203796217U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178882A (en) * | 2015-10-29 | 2015-12-23 | 中国石油集团渤海钻探工程有限公司 | Elbow-type dual-thrust hydraulic centralizer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB2545794A (en) | Downhole tools comprising cast degradable sealing elements | |
| MX2017002837A (en) | Shortened tubing baffle with large sealable bore. | |
| GB2517365A (en) | Packing element backup system | |
| MX2022007903A (en) | External ear canal pressure regulation device. | |
| EP2381552A3 (en) | Sleeve for barrier connector, and barrier connector | |
| AU2014308406B2 (en) | An artificial retaining dam of coal mine underground reservoir and method for connecting security coal pillar, surrounding rock with the retaining dam | |
| MY187465A (en) | Well system with degradable plug | |
| MX2017015240A (en) | Anchor module, casing plug assembly and method for operating a casing plug assembly in a well pipe. | |
| GB2539818A (en) | Well head stabilizing device and method | |
| CN203796217U (en) | Compression packer for well cementation | |
| CN203685057U (en) | Petroleum drill rod | |
| CN103899270B (en) | A kind of three wall water injection hole packers for colliery | |
| CN203939988U (en) | A kind of end-face seal ring | |
| WO2013191783A3 (en) | Multi-barrier seal system | |
| EP3023576A3 (en) | Flow restricted impact jar | |
| CN204343983U (en) | Sleeve grouting circulating device | |
| GB2537725A (en) | Method of plugging a well | |
| CN203796216U (en) | Compression-type packer for well cementation | |
| SA517381178B1 (en) | Adapting A Top Drive Cement Head to A Casing Running Tool | |
| CN203847050U (en) | Shaft-penetrating sleeve sealing device | |
| CN104048119A (en) | Oil pipe adapter for multiple-sealing oil cylinder | |
| MX2016005421A (en) | Flow control in subterranean wells. | |
| CN204114386U (en) | Double loose joints pipe fitting | |
| CN204356798U (en) | The syndeton of a kind of piezometer tube protection casing and the borehole wall | |
| PH22014000326Y1 (en) | Artificial aquifer recharge system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201229 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Address before: 300457 Tianjin Binhai New Area Development Zone Huanghai Road 106 Bohai Drilling Engineering Co., Ltd. science and Technology Development Office Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140827 |
|
| CX01 | Expiry of patent term |