CN2844419Y - Minor diameter companding sand control card pressure break packer - Google Patents
Minor diameter companding sand control card pressure break packer Download PDFInfo
- Publication number
- CN2844419Y CN2844419Y CN 200520021833 CN200520021833U CN2844419Y CN 2844419 Y CN2844419 Y CN 2844419Y CN 200520021833 CN200520021833 CN 200520021833 CN 200520021833 U CN200520021833 U CN 200520021833U CN 2844419 Y CN2844419 Y CN 2844419Y
- Authority
- CN
- China
- Prior art keywords
- sand control
- central tube
- pressure break
- companding
- lower contact
- 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 - Fee Related
Links
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
A kind of minor diameter companding sand control card pressure break packer.Mainly solve the problem that existing pressure break packer is difficult for seat envelope and easy sand card.It is characterized in that: be connected with in lower contact (2) upper end and be placed in the outer sand control ring (4) of central tube (1) mutually, the inlet opening (9) that communicates with it is radially arranged on sand control ring (4) inner central tube (1) wall, between sand control ring (4) and central tube (1) the 0.1-0.3 mm clearance is arranged, reach the following rubber cylinder base (3) that is covered with slip in the outer step of packing element (6) in the outer step of lower contact (2), in the outer lower contact of central tube (1) (2) upper end and the following rubber cylinder base (3) ring cavity (7) is arranged, the axial pilot groove (8) that communicates with ring cavity (7) is arranged on central tube (1) outer wall.This minor diameter companding sand control card pressure break packer has the characteristics of easy seat envelope and sand control card when fracturing work.
Description
Technical field:
The utility model relates to the used packer of pressure break in the oil field compression fracture field, especially minor diameter companding sand control card pressure break packer.
Background technology:
In the oil field compression fracture field, when pressure break, need on oil pipe, connect packer, and existing pressure break packer is because reasons in structure exists seat envelope difficulty and easy sand card, so just need operation repeatedly, make labor strength thereby increase, the fracturing work cost raises, and reduces fracturing work efficient, influence the pressure break quality, be unfavorable for applying.
The utility model content:
In order to solve the problem that existing pressure break packer is difficult for seat envelope and easy sand card, the utility model provides a kind of minor diameter companding sand control card pressure break packer, and this minor diameter companding sand control card pressure break packer has the characteristics of easy seat envelope and sand control card when fracturing work.
The technical solution of the utility model is: this minor diameter companding sand control card pressure break packer, comprise packing element, following rubber cylinder base and the lower contact that links to each other with central tube, be connected with in the lower contact upper end and be placed in the outer sand control ring of central tube mutually, on the sand control ring inner central tube wall inlet opening that communicates with it is arranged radially, the 0.1-0.3 mm clearance is arranged between sand control ring and central tube, reach the following rubber cylinder base that is covered with slip in the outer step of packing element in the outer step of lower contact, in central tube outer lower contact upper end and the following rubber cylinder base ring cavity is arranged, the axial pilot groove that communicates with ring cavity is arranged on the central tube outer wall.
Outside the sand control ring upper end in the such scheme step is arranged; Be filled with sealing ring outside the lower contact and in the seal groove of following rubber tube seat contact surface.
The utlity model has following beneficial effect: this minor diameter companding sand control card pressure break packer is owing to take such scheme, because of well liquid flows in the ring cavity through the gap between sand control ring and central tube, so just prevented that fracturing sand or haydite from entering packing element, prevent that effectively sand card phenomenon from producing, guarantee packing element rush down push back receive good; Again because of having formed hydraulic cylinder in the ring cavity, well liquid is given when pressing, promoting down, the rubber cylinder base upwards slides, formed compressive force, well liquid enters in the packing element by the pilot groove simultaneously, in packing element, form expansionary force, in compressive force and expansionary force, force the packing element expansion to seal the oil jacket toroidal cavity under the effect, thereby effectively raise seat envelope efficient, solve the difficult problem of seat envelope, this minor diameter companding sand control card pressure break packer has the characteristics of easy seat envelope and sand control card when fracturing work thus, is beneficial to and applies.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model.
1-central tube among the figure, 2-lower contact, rubber cylinder base under the 3-, 4-sand control ring, 5-step, 6-packing element, 7-ring cavity, 8-pilot groove, 9-inlet opening, 10-sealing ring.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
By shown in Figure 1, this minor diameter companding sand control card pressure break packer comprises packing element 6, following rubber cylinder base 3 and the lower contact 2 that links to each other with central tube 1, be connected with the sand control ring 4 that is placed in mutually outside the central tube 1 in lower contact 2 upper ends, on sand control ring 4 inner central tubes 1 wall inlet opening 9 that communicates with it is arranged radially, the sand control ring has step 5 outside 4 upper ends, 1 gap that 0.1-0.3 is arranged of sand control ring 4 and central tube, reach the following rubber cylinder base 3 that is covered with slip in the packing element 6 outer steps in the lower contact 2 outer steps, in central tube 1 outer lower contact 2 upper ends and the following rubber cylinder base 3 ring cavity 7 is arranged, the axial pilot groove 8 that communicates with ring cavity 7 is arranged on central tube 1 outer wall, be filled with sealing ring 10 outside the lower contact 2 and in the seal groove of following rubber cylinder base 3 contact surfaces.After well liquid enters into central tube 1 bottom from central tube 1, enter in the ring cavity 7 by the gap of inlet opening 9 through 1 of sand control ring 4 and central tube, in ring cavity 7, formed hydraulic cylinder, well liquid is given when pressing, well liquid promotes down, and rubber cylinder base 3 upwards slides, formed compressive force, well liquid enters in the packing element 6 by pilot groove 8 simultaneously, in packing element 6, form expansionary force, in compressive force and expansionary force, force packing element 6 expansions to seal the oil jacket toroidal cavity under the effect, thereby effectively raise seat envelope efficient, solve the difficult problem of seat envelope.During through the gap of 1 of sand control ring 4 and central tube, have only 0.2 millimeter because of the gap at well liquid, fracturing sand or haydite can't pass through, and have so just prevented that fracturing sand or haydite from entering glue letter 6, prevent that effectively sand card phenomenon from producing, and guarantee that packing element rushes down to push back to receive well.This minor diameter companding sand control card pressure break packer has the characteristics of easy seat envelope and sand control card when fracturing work thus, is beneficial to and applies.
Claims (3)
1, a kind of minor diameter companding sand control card pressure break packer, comprise packing element (6), following rubber cylinder base (3) and the lower contact (2) that links to each other with central tube (1), it is characterized in that: be connected with in lower contact (2) upper end and be placed in the outer sand control ring (4) of central tube (1) mutually, the inlet opening (9) that communicates with it is radially arranged on sand control ring (4) inner central tube (1) wall, between sand control ring (4) and central tube (1) the 0.1-0.3 mm clearance is arranged, reach the following rubber cylinder base (3) that is covered with slip in the outer step of packing element (6) in the outer step of lower contact (2), in the outer lower contact of central tube (1) (2) upper end and the following rubber cylinder base (3) ring cavity (7) is arranged, the axial pilot groove (8) that communicates with ring cavity (7) is arranged on central tube (1) outer wall.
2, minor diameter companding sand control card pressure break packer according to claim 1 is characterized in that: sand control ring (4) has step (5) outside the upper end.
3, minor diameter companding sand control card pressure break packer according to claim 2 is characterized in that: be filled with sealing ring (10) outside the lower contact (2) and in the seal groove of following rubber cylinder base (3) contact surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520021833 CN2844419Y (en) | 2005-10-27 | 2005-10-27 | Minor diameter companding sand control card pressure break packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520021833 CN2844419Y (en) | 2005-10-27 | 2005-10-27 | Minor diameter companding sand control card pressure break packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2844419Y true CN2844419Y (en) | 2006-12-06 |
Family
ID=37486371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520021833 Expired - Fee Related CN2844419Y (en) | 2005-10-27 | 2005-10-27 | Minor diameter companding sand control card pressure break packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2844419Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287159A (en) * | 2011-06-28 | 2011-12-21 | 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 | Self-balanced packer and method |
| CN103132944A (en) * | 2011-11-25 | 2013-06-05 | 中国石油天然气股份有限公司 | Hydraulic Small Diameter Packer for Sand Control |
| CN112412389A (en) * | 2020-12-08 | 2021-02-26 | 大庆市璞庆钻采设备制造有限公司 | Fully-closed large-displacement packer capable of preventing foreign matter from blocking immovable pipe column for multi-layer fracturing |
-
2005
- 2005-10-27 CN CN 200520021833 patent/CN2844419Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287159A (en) * | 2011-06-28 | 2011-12-21 | 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 | Self-balanced packer and method |
| CN102287159B (en) * | 2011-06-28 | 2014-06-11 | 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 | Self-balanced packer and method |
| CN103132944A (en) * | 2011-11-25 | 2013-06-05 | 中国石油天然气股份有限公司 | Hydraulic Small Diameter Packer for Sand Control |
| CN103132944B (en) * | 2011-11-25 | 2016-07-13 | 中国石油天然气股份有限公司 | Hydraulic Small Diameter Packer for Sand Control |
| CN112412389A (en) * | 2020-12-08 | 2021-02-26 | 大庆市璞庆钻采设备制造有限公司 | Fully-closed large-displacement packer capable of preventing foreign matter from blocking immovable pipe column for multi-layer fracturing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |