CN2550487Y - Non-release self-sealing double function packer - Google Patents
Non-release self-sealing double function packer Download PDFInfo
- Publication number
- CN2550487Y CN2550487Y CN 02240035 CN02240035U CN2550487Y CN 2550487 Y CN2550487 Y CN 2550487Y CN 02240035 CN02240035 CN 02240035 CN 02240035 U CN02240035 U CN 02240035U CN 2550487 Y CN2550487 Y CN 2550487Y
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- CN
- China
- Prior art keywords
- packer
- double function
- sealing
- packing element
- release self
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- Expired - Fee Related
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Abstract
The utility model relates to a non-release self-sealing double function packer on a pipe column for the manufacturing technique of filling water in layers in an oil field, oil exploration in layers, etc. An upper caulking ring 13 is arranged between the seaming point of a rubber barrel 12 on the upper side of the packer and an upper-middle rubber barrel 14 and a center pipe 10; a lower caulking ring 21 which is arranged at the lower end in an inner cavity of a sealing testing sleeve (15) is provided with a seal testing valve 16, a steel ring 17, a pressing spring 8 and a seal testing valve seat 19 on the wall of the center pipe 10. The non-release self-sealing double function packer has the advantages of convenient assembly, high success rate and simple construction process, is suitable for the water flooding filling process of a water filling well, overcomes the disadvantages of easy damage, difficult unsealing operation, bad sealing performance, etc., and improves the dependability of the packer. The non-release self-sealing double function packer can be reused after special test and pressure test, and the production cost is reduced.
Description
(1) technical field:
The utility model belongs to exempting from the production technology tubing strings such as separated-zone water infection oil field, separate-zone producer and discharges from testing envelope double acting packer.
(2) background technology:
Packer on oilfield seperated layer water injection, the oil production by layer production technology tubing string has the compression inflatable packer, and wherein compression packer sets the pressure height; Packing element damages easily in the inflatable packer, deblocking difficulty, poor sealing performance.Need other operation to cooperate when testing envelope and test envelope, the working procedure complexity increases activity duration and labour intensity.
(3) utility model content:
Technical problem to be solved in the utility model is at the problem that exists in the background technology, and provides a kind of release of exempting from by the water injection pressure deblocking to seal the double acting packer from testing.
The invention for solving the technical problem can reach by following technical solution: the top of packer packing element, in upper isolating ring is housed between packing element seam crossing and the central tube; Be on the center tube wall dress and test envelope valve, steel loop, stage clip, test the envelope valve seat testing in the big envelope inner chamber lower end lower isolating ring.
When needs trip out tubing string, injection pressure liquid in sleeve pipe, packing element can trip out flow string after restoring to the original state.
When packer finish set action after, test the squeezing action that the steel ball that seals on the valve is subjected to testing big envelope this moment, steel ball moves inward, open the upper taper valve, pressure fluid also backs down simultaneously the lower taper valve, and liquid enters in the intermediate annular space of two groups of packing elements up and down, when annular seal space and oil pipe internal pressure balance, under the effect of secondary spring, pathway closure.When up and down in two groups of packing elements one group of packing element blow-by being arranged, all can reduce by build-up of pressure, testing envelope valve passage and will open on the central tube at this moment, because the discharge of pressure liquid causes the pressure of central tube to reduce, can't voltage stabilizing, confirm to test the sealed knot fruit.
The utility model is compared with the above-mentioned background technology can have following beneficial effect: this packer is easy to assembly, the success rate height.Because packer adopted the new design structure, it is low that packer has release pressure low (can directly use water injection pressure to discharge), bears the pressure reduction height, well-flushing is conciliate seal pressure, need not other operation and directly test remarkable advantages such as envelope.Construction technology is simple, is particularly useful for the water injection well stratified injection water technology.Overcome compression packer set pressure high with inflatable packer in packing element damage easily, shortcoming such as deblocking difficulty, sealing performance are bad, improved the reliability of packer.Packer can reuse, because packer adopted the fluid pressure type deblocking, the effect by water injection pressure makes and sets valve and open, and packing element restores to the original state, and realizes deblocking, has prevented because during big Load lifting tubing string, the packer that causes damages and other work accident.By reusing after special inspection and the pressure testing, reduced cost of production.
(4) description of drawings:
Accompanying drawing 1 is the installation drawing of this packer;
Accompanying drawing 2 is that Fig. 1 sets the back state diagram.
(5) specific embodiment:
Below in conjunction with the drawings and specific embodiments will the utility model is described in further detail:
By shown in Figure 1, packer top packing element 12, in upper isolating ring 13 is housed between packing element 14 seam crossings and the central tube 10; Be on central tube 10 walls dress and test envelope valve 16, steel loop 17, stage clip 8, test envelope valve seat 19 testing in big envelope 15 inner chambers lower end lower isolating ring 21.
In such scheme, it is to transform to form on former packer.Former packer also has top connection 1, compression valve 2, spring 3, little well-flushing valve seat 4, the little valve 5 of well-flushing, spring 6, well-flushing valve body 7, an envelope piston bush 8, seat envelope piston 9, release pin 11, down middle packing element 20, following packing element 22, adjustable ring 23 and lower contact 24 down.During packer setting, liquid by oil pipe through the biography liquid hole on central tube top and promote the little valve of well-flushing, pressure fluid enters in the annular seal space of seat envelope piston bush and central tube, promote seat envelope piston, after release pin is cut off, seat envelope piston moves down and compresses packing element, promote to test big envelope simultaneously and continue to affact the bottom packing element, when packer finish set after, with oil pipe internal pressure balance, the secondary spring place on the little valve of well-flushing makes valve up, and closes in the annular seal space, remain maximum pressure in the pressure chamber between seat envelope piston bush and the central tube like this, forever guarantee the sealing of packer.
When the needs well-flushing, remove pressure in the central tube, in sleeve pipe, inject flushing fluid, liquid affacts on the compression valve by the liquid-through hole of cleaning valve body top, and compression valve moves down and open the little valve of well-flushing, and at this moment the pressure in the annular seal space is released by the liquid-through hole on the central tube, two groups of middle pressure of packing element promote the packing element reinstatement up and down, at this moment, the pressure of oil jacket annular space affact tests the envelope valve on, make test the envelope valve close.Liquid is directly passed through by the annular space between packer and the sleeve pipe, finishes well-flushing, well-flushing later on again in central tube water filling get final product ordinary production.
Claims (1)
1, a kind of exempting from release that relates on the oil well production technology tubing string is sealed the double acting packer from testing, and contain central tube (10), top packing element (12) on the packer, go up middle packing element (14), test big envelope (15), lower isolating ring (21),
A, on top packing element (12), upper isolating ring (13) is housed between packing element (14) seam crossing and the central tube (10) in going up;
B, be on central tube (10) wall dress and test envelope valve (16), steel loop (17), stage clip (8), test envelope valve seat (19) testing in big envelope (15) inner chamber lower end lower isolating ring (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02240035 CN2550487Y (en) | 2002-07-08 | 2002-07-08 | Non-release self-sealing double function packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02240035 CN2550487Y (en) | 2002-07-08 | 2002-07-08 | Non-release self-sealing double function packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2550487Y true CN2550487Y (en) | 2003-05-14 |
Family
ID=33713260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02240035 Expired - Fee Related CN2550487Y (en) | 2002-07-08 | 2002-07-08 | Non-release self-sealing double function packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2550487Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114027A (en) * | 2015-08-06 | 2015-12-02 | 东北石油大学 | Flexible self-sealed anti-humeral-protrusion compression packer |
-
2002
- 2002-07-08 CN CN 02240035 patent/CN2550487Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114027A (en) * | 2015-08-06 | 2015-12-02 | 东北石油大学 | Flexible self-sealed anti-humeral-protrusion compression packer |
| CN105114027B (en) * | 2015-08-06 | 2018-01-05 | 东北石油大学 | A kind of anti-shoulder compression packer of flexible self sealss |
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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 |