CN202000956U - External casing packer - Google Patents
External casing packer Download PDFInfo
- Publication number
- CN202000956U CN202000956U CN201120047880XU CN201120047880U CN202000956U CN 202000956 U CN202000956 U CN 202000956U CN 201120047880X U CN201120047880X U CN 201120047880XU CN 201120047880 U CN201120047880 U CN 201120047880U CN 202000956 U CN202000956 U CN 202000956U
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- CN
- China
- Prior art keywords
- valve
- valve body
- tube
- expansion
- packing element
- 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
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Abstract
The utility model discloses an external casing packer. A sealing hoop is connected with the upper part of an expansion glue tube, the sealing hoop and the expansion tube are sheathed outside an inner tube, a part between the sealing hoop and the inner tube is sealed, the lower part of the expansion glue tube is connected with the upper part of a valve body, an outer thread at the lower part of the inner tube is connected with an inner thread at the upper part of the valve body, the lower part of the valve body is connected with a lower connector, a pressure-limiting valve, a check valve and a locking valve are arranged on the valve body, a blind hole pin is arranged in the valve body, a vertical channel is arranged on the valve body, an empty cavity exists between the inner tube and the expansion glue tube and is communicated with the vertical channel, an inner bore of the blind hole pin is communicated with the vertical channel, and the pressure-limiting valve, the check valve and the locking valve are communicated with the vertical channel. After the external casing pack is at the designed height, a striking rod is cast to brake the blind hole pin, so that the inner tube is communicated with the empty cavity, the pressure in the inner tube is increased, the expansion glue tube is expanded to seal the wall of a well, and the check valve and the locking valve cut out the vertical channel so as to lead the expansion glue tube to be at the expanding state permanently. Therefore, the external casing packer is applicable to the requirement on plugging the well bottom of an open hole well of an oil field.
Description
Technical field
The utility model is the packer that the oil-water well shutoff is used, and is a kind of external casing packer.
Background technology
The inflatable packer that oil-field flooding is used is that packing element expands outwardly when the packing element internal pressure is higher than the packing element external pressure, realization sealing oil casing annular space.Will deblocking when present inflatable packer does not have pressure in inside, be not suitable for the requirement at the bottom of the permanent plugged well in oil field, the inflatable packer that has is provided with unidirectional mechanism in inside, deblocking not in the time of can guaranteeing not have pressure reduction within a certain period of time, but keep the not limited time of deblocking, also be not suitable for the requirement at the bottom of the permanent plugged well in oil field.
Summary of the invention
The purpose of this utility model provides a kind of external casing packer, is applicable to the requirement at the bottom of the permanent plugged well in oil field.
The purpose of this utility model is achieved in that and comprises interior pipe, sealing hoop, the expansion packing element, pressure limiting valve, ball-and-seat, lock valve, the blind hole pin, valve body, lower contact, sealing hoop is connected with expansion packing element top, sealing hoop, the expansion packing element is sleeved on outside the interior pipe, seal between sealing hoop and the interior pipe, expansion packing element bottom is connected with valve body top, interior pipe lower external thread is connected with the valve body upper internal threaded, valve body lower portion is connected with lower contact, pressure limiting valve is installed on the valve body, ball-and-seat, lock valve, installing blind pin in the valve body, the vertical passageway is arranged on the valve body, between interior pipe and the expansion packing element cavity is arranged, the vertical passageway communicates with cavity, and the endoporus of blind hole pin communicates with the vertical passageway, pressure limiting valve, ball-and-seat, lock valve communicates with the vertical passageway.
The beneficial effects of the utility model are: drop into the disconnected blind hole pin of bump bastinade under the utility model after projected depth, pipe and cavity UNICOM in making, boost in the interior pipe, the expansion packing element expansion sealing borehole wall, ball-and-seat, lock valve make the vertical passageway cutout, make the expansion packing element forever be in expansion state, therefore, the utility model is applicable to the requirement at the bottom of the permanent plugged well of oil field open hole well.
Description of drawings
Accompanying drawing 1 is a structure assembling drawing of the present utility model.
The specific embodiment
Below in conjunction with Fig. 1 embodiment of the present utility model is described.
As shown in the figure, pipe 1 in embodiment of the present utility model comprises, sealing hoop 2, expansion packing element 3, pressure limiting valve 4, ball-and-seat 5, lock valve 6, blind hole pin 7, valve body 8, lower contact 9, sealing hoop 2 is connected with expansion packing element 3 tops, sealing hoop 2, in being sleeved on, expansion packing element 3 manages outside 1, sealing between sealing hoop 2 and the interior pipe 1, expansion packing element 3 bottoms are connected with valve body 8 tops, be welding between the two, interior pipe 1 lower external thread is connected with valve body 8 upper internal threaded, valve body 8 bottoms are connected with lower contact 9, pressure limiting valve 4 is installed on the valve body 8, ball-and-seat 5, lock valve 6, pressure in the pressure limiting valve 4 restriction expansion packing elements 3 prevents superpressure damage packing element, installing blind pins 7 in the valve body 8, vertical passageway 10 is arranged on the valve body 8, between interior pipe 1 and the expansion packing element 3 cavity 11 is arranged, the sealed hoop 2 in cavity 11 upper ends is shut, and vertical passageway 10 communicates with cavity 11, the endoporus of blind hole pin 7 communicates with vertical passageway 10, pressure limiting valve 4, ball-and-seat 5, lock valve 6 communicates with vertical passageway 10.
The utility model is down behind open hole well packing position, drop into the disconnected blind hole pin 7 of bump bastinade, pipe 1 is through blind hole pin 7, vertical passageway 10 and cavity 11 UNICOMs in making, boost in the interior pipe 1, the expansion packing element 3 expansion sealing boreholes wall, ball-and-seat 4, lock valve 6 make vertical passageway 10 cutout, make expansion packing element 3 forever be in expansion state.
Claims (1)
1. external casing packer, comprise interior pipe (1), sealing hoop (2), expansion packing element (3), pressure limiting valve (4), ball-and-seat (5), lock valve (6), blind hole pin (7), valve body (8), lower contact (9), it is characterized in that: sealing hoop (2) is connected with expansion packing element (3) top, sealing hoop (2), expansion packing element (3) is sleeved on outside the interior pipe (1), sealing between sealing hoop (2) and the interior pipe (1), expansion packing element (3) bottom is connected with valve body (8) top, interior pipe (1) lower external thread is connected with valve body (8) upper internal threaded, valve body (8) bottom is connected with lower contact (9), valve body (8) is gone up pressure limiting valve (4) is installed, ball-and-seat (5), lock valve (6), the interior installing blind pin of valve body (8) (7), vertical passageway (10) is arranged on the valve body (8), between interior pipe (1) and the expansion packing element (3) cavity (11) is arranged, vertical passageway (10) communicates with cavity (11), the endoporus of blind hole pin (7) communicates with vertical passageway (10), pressure limiting valve (4), ball-and-seat (5), lock valve (6) communicates with vertical passageway (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120047880XU CN202000956U (en) | 2011-02-18 | 2011-02-18 | External casing packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120047880XU CN202000956U (en) | 2011-02-18 | 2011-02-18 | External casing packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202000956U true CN202000956U (en) | 2011-10-05 |
Family
ID=44703701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120047880XU Expired - Lifetime CN202000956U (en) | 2011-02-18 | 2011-02-18 | External casing packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202000956U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102747979A (en) * | 2012-08-01 | 2012-10-24 | 山东胜油固井工程技术有限公司 | Bidirectional self-locking type external casing packer |
| CN104153741A (en) * | 2014-08-26 | 2014-11-19 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Control valve system for external casing packer |
| CN105781478A (en) * | 2016-04-06 | 2016-07-20 | 大庆昊运橡胶制品有限公司 | Pressure-limit-free hydraulic expansion type external casing packer assembly |
-
2011
- 2011-02-18 CN CN201120047880XU patent/CN202000956U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102747979A (en) * | 2012-08-01 | 2012-10-24 | 山东胜油固井工程技术有限公司 | Bidirectional self-locking type external casing packer |
| CN104153741A (en) * | 2014-08-26 | 2014-11-19 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Control valve system for external casing packer |
| CN105781478A (en) * | 2016-04-06 | 2016-07-20 | 大庆昊运橡胶制品有限公司 | Pressure-limit-free hydraulic expansion type external casing packer assembly |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111005 |