CN2784580Y - Hydraulic locking packer - Google Patents
Hydraulic locking packer Download PDFInfo
- Publication number
- CN2784580Y CN2784580Y CN 200420099490 CN200420099490U CN2784580Y CN 2784580 Y CN2784580 Y CN 2784580Y CN 200420099490 CN200420099490 CN 200420099490 CN 200420099490 U CN200420099490 U CN 200420099490U CN 2784580 Y CN2784580 Y CN 2784580Y
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- CN
- China
- Prior art keywords
- packer
- hydraulic locking
- hydraulic
- top connection
- locking mechanism
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Abstract
The utility model discloses a hydraulic locking packer used for petroleum industry, particularly a packer used for open hole wells or a packer for preventing sand form leaving in a well tube. The utility model is suitable for downhole operation engineering of separate zone producers. The utility model comprises an upper joint, a lower joint, a packer rubber, a center tube and a packer rubber seat, wherein the packer rubber and the packer rubber seat are installed at the outside of the center tube, both ends of the center tube are connected with the upper joint and the lower joint, a hydraulic locking mechanism is installed between the upper joint and the packer rubber seat, and the hydraulic locking mechanism is communicated with a center hole of the center tube through a hydraulic channel. The packer causes a mechanical locking mechanism to be replaced by the hydraulic locking mechanism. The operation of squeezing and pouring plugging agents at high pressure or layered work can be obtained after the operation of seat sealing. The utility model has the advantages that the structure is simple, and does not unseal after pressure relief.
Description
Technical field
The utility model belongs to the oil production equipment of petroleum industry, and particularly the hydraulic locking packer is used for open hole well or sand control and stays the interior packer of well casing, is suitable for the underground work engineering of separate-zone producer.
Background technology
In the stratified operation of the open hole well of oilfield exploitation, usefulness is a kind of hydraulic expansion type packer at present, as the K344 packer, this packer adopts hydraulic base sealed, by hydraulic coupling spreading rubber annular seal space, because this packer tight mechanism not with lock, the pipe internal pressure reduces packer with regard to deblocking, therefore can only play the packing effect of short-term, can be used in the measures such as test, acidifying, but, just need after a kind of pressure release of minor diameter the not packer of deblocking for long-term shutoff water layer in the open hole well or the oil production by layer in the anti-sandpipe.
Summary of the invention
The purpose of this utility model provides the hydraulic locking packer, overcomes big, the defective that can only the short-term sealing of packer construction complexity in the prior art, diameter, optimize packer sealing performance, simplify the structure of packer.
Use the present technique solution can reach above-mentioned purpose: the hydraulic locking packer, comprise top connection, lower contact, packing element, central tube and glue tube base, central tube is installed packing element and glue tube base outward, and two ends are connected with lower contact with top connection.Hydraulic locking mechanism is installed between top connection and glue tube base, and hydraulic locking mechanism is communicated with the centre bore of central tube through hydraulic channel.
The utility model is compared with existing hydraulic expansion formula packer, has locking function, not deblocking, reliable sealing advantage after the pressure release.Compare with hydraulic compression type packer, mechanism has replaced mechanical lock mechanism with hydraulic locking, and is simple in structure, and diameter is little, and seat is honored as a queen can high pressure squeeze note sealing agent or prevent oil production by layer or other measures that sandpipe is interior.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
The specific embodiment
Below in conjunction with embodiment the utility model is done further detailed description: referring to accompanying drawing, the hydraulic locking packer, comprise top connection, lower contact 9, packing element 8, central tube 7 and glue tube base 6, central tube 7 outer packing element 8 and the glue tube bases 6 installed, two ends are connected with lower contact 9 with top connection 1, hydraulic locking mechanism 4 is installed between top connection 1 and glue tube base 6, and hydraulic locking mechanism 4 is communicated with through the centre bore of hydraulic channel with central tube 7.Hydraulic locking mechanism 4 comprises spool and little spring 5, and the spool external diameter is provided with step, an end is a cone, and little spring 5 is installed under the step of spool external diameter.The optional harder nonmetals of the material of spool, as polytetrafluoroethylene (PTFE), nylon etc., little spring 5 is enclosed within an end of spool minor diameter.At least be provided with a hydraulic pressure hole 2 on the top connection 1 lower end body wall, this hydraulic pressure hole 2 is eccentric axial holes, and the upper end is communicated with the groove of top connection 1 internal diameter, and the bottom is the reaming section, is provided with taper surface in the junction of reaming section and matches with the cone of spool.Top connection 1 one ends are the tubing thread box thread, and an end is regular screw threads, and screw tip has groove, can adorn sealing ring 3.Central tube 7 is provided with radial direction through hole, and this radial direction through hole is corresponding with the groove of top connection 1 internal diameter.The maximum outside diameter of top connection 1, lower contact 9 and glue tube base 6 is 70mm, and the maximum inner diameter of central tube 7 is 12mm.The inner sulfuration in packing element 8 two ends has skeleton, the skeleton TOE, and packing element 8 two ends link to each other with lower contact 9 with glue tube base 6 respectively.
The utility model is connected with oil pipe is lowered to the layering position, when being used for stratified operation, the pressure in the central tube 7 passes through the hole on the central tube 7, thereby gives spool compression little spring 5 with hydraulic pressure transfer, fluid pressure spreading packing element 8 sealed external annular spaces, thus play the packing effect.After packing element 8 fully seals, release the pressure in the central tube 7, this moment is under the effect of little spring 5 restoring forces, the spool return, contact with the tapered end face in hydraulic pressure hole 2 in the top connection 1, keep packing element 8 to be in the high pressure swelling state, different oil reservoirs in annular space or the anti-sandpipe in the packing open hole well, reach after the pressure release the not purpose of deblocking, can carry out operations such as squeeze note, shutoff, oil production by layer.
Claims (5)
1, hydraulic locking packer, comprise top connection (1), lower contact (9), packing element (8), central tube (7) and glue tube base (6), outer packing element (8) and the glue tube base (6) installed of central tube (7), two ends are connected with lower contact (9) with top connection (1), it is characterized in that hydraulic locking mechanism (4) is installed between top connection (1) and glue tube base (6), hydraulic locking mechanism (4) is communicated with through the centre bore of hydraulic channel with central tube (7).
2, hydraulic locking packer according to claim 1 is characterized in that hydraulic locking mechanism (4) comprises spool and little spring (5), and the spool external diameter is provided with step, an end is a cone, and little spring (5) is installed under the step of spool external diameter.
3, hydraulic locking packer according to claim 1, it is characterized in that being provided with a hydraulic pressure hole (2) at least on the body wall of top connection (1) lower end, this hydraulic pressure hole (2) is eccentric axial hole, the upper end is communicated with the groove of top connection (1) internal diameter, the bottom is the reaming section, is provided with taper surface in the junction of reaming section and matches with the cone of spool.
4, hydraulic locking packer according to claim 1 is characterized in that central tube (7) is provided with radial direction through hole, and this radial direction through hole is corresponding with the groove of top connection (1) internal diameter.
5, intraluminal fluid according to claim 1 is pressed the locking packer, it is characterized in that the maximum outside diameter of top connection (1), lower contact (9) and glue tube base (6) is 70mm, and the maximum inner diameter of central tube (7) is 12mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420099490 CN2784580Y (en) | 2004-12-21 | 2004-12-21 | Hydraulic locking packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420099490 CN2784580Y (en) | 2004-12-21 | 2004-12-21 | Hydraulic locking packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2784580Y true CN2784580Y (en) | 2006-05-31 |
Family
ID=36771555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420099490 Expired - Fee Related CN2784580Y (en) | 2004-12-21 | 2004-12-21 | Hydraulic locking packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2784580Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915070A (en) * | 2010-08-23 | 2010-12-15 | 东营市兆鑫工贸有限责任公司 | Expanding open hole packer |
| CN101748985B (en) * | 2009-12-13 | 2012-09-12 | 西南石油大学 | Well blowout preventer mounted on drilling column and automatically controlling in well |
| CN101748984B (en) * | 2009-12-13 | 2012-09-12 | 西南石油大学 | Automatically controlled well blowout preventer mounted in drilling column |
| CN107762441A (en) * | 2017-11-03 | 2018-03-06 | 西南石油大学 | A kind of inflatable packer |
| CN107916910A (en) * | 2016-10-10 | 2018-04-17 | 中国石油化工股份有限公司 | Independent hydraulic control packer pressure valve |
-
2004
- 2004-12-21 CN CN 200420099490 patent/CN2784580Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748985B (en) * | 2009-12-13 | 2012-09-12 | 西南石油大学 | Well blowout preventer mounted on drilling column and automatically controlling in well |
| CN101748984B (en) * | 2009-12-13 | 2012-09-12 | 西南石油大学 | Automatically controlled well blowout preventer mounted in drilling column |
| CN101915070A (en) * | 2010-08-23 | 2010-12-15 | 东营市兆鑫工贸有限责任公司 | Expanding open hole packer |
| CN101915070B (en) * | 2010-08-23 | 2013-01-23 | 东营市兆鑫工贸有限责任公司 | Expanding open hole packer |
| CN107916910A (en) * | 2016-10-10 | 2018-04-17 | 中国石油化工股份有限公司 | Independent hydraulic control packer pressure valve |
| CN107762441A (en) * | 2017-11-03 | 2018-03-06 | 西南石油大学 | A kind of inflatable packer |
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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 |