CN2683836Y - Hydraulic twin-tub anchoring packer - Google Patents
Hydraulic twin-tub anchoring packer Download PDFInfo
- Publication number
- CN2683836Y CN2683836Y CN 200420039656 CN200420039656U CN2683836Y CN 2683836 Y CN2683836 Y CN 2683836Y CN 200420039656 CN200420039656 CN 200420039656 CN 200420039656 U CN200420039656 U CN 200420039656U CN 2683836 Y CN2683836 Y CN 2683836Y
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- CN
- China
- Prior art keywords
- outer tube
- hydraulic cylinder
- hydraulic
- seal
- sitting
- 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
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Abstract
The utility model discloses a hydraulic twin-tub anchoring packer for the oil industry, comprising a sitting seal balance mechanism, a sitting seal part, a screw step tightness device, an anchor device and a desterilizing seal device. An inner central tube, an upper part outer tube and a lower outer tube are sheathed in the utility model. The sitting seal part comprises a tubing and a sitting seal control mechanism. The seal control mechanism is provided with a hydraulic cylinder, an upper piston is arranged in the hydraulic cylinder, and one hydraulic cylinder is superimposed on the sitting seal control mechanism. Compared with the present packer, the tool has the function of the low sitting seal pressure, the high assurance coefficient of the underground tube pillar. Because of double hydraulic cylinders, the pressure of the sitting seal is greatly reduced. Having the same compressional resistance performance of the original packer through high voltage sitting seal, the requirements of the underground tube pillar bearing ability is decreased, the underground tube pillar is protected, with the result that the oil extraction production cost of the oil field is decreased.
Description
Technical field
The utility model belongs to the down-hole oil production instrument of petroleum industry, particularly hydraulic double cylinder anchoring packer, is applicable to the oil production by layer technology of oil well.Be used for the grappling down-hole string and the sealing oil reservoir.
Technical background
When oilfield exploitation to the middle and later periods, because of the exploitation time of each oil reservoir different with the exploitation dynamics, cause interlayer contradiction aggravation, therefore need carry out necessary separation and handle oil reservoir.The main effect of packer is effectively separated oil reservoir exactly, reaches the purpose of avoiding interlayer interference.At present, at the oil recovery scene of petroleum industry, for cost efficiency, the useful life of most oil pipes is in continuous prolongation, and oil pipe is subjected to the corrosion of stratum production fluid and the factors such as wearing and tearing of downhole tool in long-term use, cause the bearing capacity of oil pipe to reduce year by year.And the hydraulic cylinder of existing hydraulic packer is the single cylinder structure, and it is very high to set the pressure requirement, and general requirements sets pressure and reaches 15MPa.So high pressure easily causes down-hole string to damage, and has to carry out workover treatment, makes cost of production high.
Summary of the invention
The purpose of this utility model provides the hydraulic double cylinder anchoring packer, reduces to set pressure.Make it not only can anchoring string, and can sustain the oil reservoir high pressure.Overcome that hydraulic packer sets the defective that needs high pressure in the prior art, the protection down-hole string reduces production costs.
The present technique solution can reach above-mentioned purpose: the hydraulic double cylinder anchoring packer, have that an envelope balanced controls, seat envelope part, screw thread go on foot tight mechanism, anchor mechanism is conciliate sealing mechanism, and install at two ends, lower contact.Inner central tube, top outer tube and bottom outer tube wear wherein.Seat envelope part is made up of packing element and the sealed system of seat mechanism, and sealed system mechanism is provided with a hydraulic cylinder, in load onto piston, set up a hydraulic cylinder setting controlling organization.
The utility model is compared with existing packer to have and is set the function that pressure is low, the down-hole string safety factor is high.The utility model is a double hydraulic cylinder, and it sets pressure generally about 10MPa, greatly reduces the requirement to the oil pipe bearing capacity.After using the utility model, can add lower pressure from oil pipe packer is set fully, owing to increased a hydraulic cylinder, the hydraulic cylinder compression area be strengthened, the required pressure of packer setting reduces.Guaranteed packer can safety, low pressure sets.Grappling behind the packer setting has and original packer the same withstand voltage properties after high pressure sets, and has reduced the requirement to the down-hole string bearing capacity, has protected down-hole string, thereby has reduced the oil recovery cost of production in oil field.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
Among the figure: top connection 1, deblocking shear pin 2, set balanced controls 3, packing element 4, inner central tube 5, cushion rubber 6,8 and 11, upper piston 7, top outer tube 9, seal 10, upper cylinder body 12, bottom outer tube 13, connector 14, middle piston 15, outer tube lock dog 16, lower piston 17, interior pipe lock dog 18, lower cylinder body 19, screw thread and go on foot tight mechanism 20, upper cone 21, slip insert 22, separate sealing mechanism 23, lower contact 24
The specific embodiment
Below in conjunction with accompanying drawing the utility model is done further detailed description: referring to accompanying drawing, the hydraulic double cylinder anchoring packer has the balanced controls of setting 3, sets part, screw thread goes on foot tight mechanism 20 and conciliate sealing mechanisms 23, and install at two ends, lower contact 1 and 24.Upper and lower part outer tube 9 and 13 is through being threaded and inner central tube 5 is set on together, and inner central tube and top connection 1 reconciliation sealing mechanism 23 is connected, and packing element 4 is enclosed within on the top outer tube 9, top outer tube 9 with set balanced controls 3 and be connected.Set part by packing element 6 with set controlling organization and form, set controlling organization and be provided with a hydraulic cylinder, in load onto piston 7.Set controlling organization and below original hydraulic cylinder, set up a hydraulic cylinder.Two hydraulic cylinders are connected by the connector 14 that is provided with radial direction through hole.The mounting groove of pipe lock dog 18 and outer tube lock dog 16 in being equipped with on inner central tube 5 and the bottom outer tube 13.Middle piston 15 is enclosed within on the bottom outer tube 13, and lower piston 17 is connected with bottom outer tube 13 by outer tube lock dog 16, and bottom outer tube 13 is connected with inner central tube 5 by interior pipe lock dog 18 again.The inside and outside footpath of lower piston 17 goes on foot tight mechanism 20 with screw thread respectively and is connected with upper cone 21 in the anchor mechanism.Cushion rubber 6,8 and 11 is installed in and respectively is connected sealing place.Slip insert 22 overlays on the upper cone 21.Upper piston 7, upper cylinder body 12 are formed original hydraulic cylinder with top outer tube 9 and seal 10, and middle piston 15, lower cylinder body 19, bottom outer tube 13 are formed another hydraulic cylinder of setting up with lower piston 17.Pressuring pump is suppressed when ground, when pressure reaches inner central tube 5, pressure is delivered to original hydraulic cylinder by the pressure transmission hole on inner central tube 5 and the top outer tube 9, meanwhile, pressure is delivered to the hydraulic cylinder of setting up by the annular space of inner central tube 5 and upper and lower part outer tube 9 and 13, two hydraulic cylinders promote upper piston 7, upper cylinder body 12, connector 14, middle piston 15, lower cylinder body 19 up and compression packing elements 4 simultaneously, screw thread goes on foot 20 actions of tight mechanism, prevent, middle piston 7 and 15, upper and lower cylinder body 12 and 19 the retraction.When two hydraulic cylinders were up, outer tube lock dog 16 discharged bottom outer tubes 13, and the descending promotion upper cone of lower piston 17 21 is descending, with squeezing on the slip insert 22, is anchored on the sleeve pipe, and after pressure reached certain value, packer was finished and set action.During deblocking, on put on joint 1, cut off deblocking shear pin 2, separate sealing mechanism 23 action, and discharge screw thread and go on foot tight mechanism 20, thereby realize deblocking of the present utility model.
Claims (4)
1, hydraulic double cylinder anchoring packer, have the balanced controls of setting (3), set part, screw thread goes on foot tight mechanism (20), anchor mechanism and conciliates sealing mechanism (23), joint (1) and lower contact (24) are installed in two ends, inner central tube (5) and, top outer tube (9) and bottom outer tube (13) wear wherein; Set part by packing element (6) with set controlling organization and form, set controlling organization and be provided with a hydraulic cylinder, in load onto piston (7), it is characterized in that setting controlling organization and set up a hydraulic cylinder.
2, hydraulic double cylinder anchoring packer according to claim 1, it is characterized in that the hydraulic cylinder of setting up is positioned at the below of original hydraulic cylinder, form by middle piston (15), lower piston (17) and lower cylinder body (19), lower piston (17) is installed in the below of middle piston (15), the mounting groove of pipe lock dog (18) and outer tube lock dog (16) in being equipped with on inner central tube (5) and the bottom outer tube (13); Middle piston (15) is enclosed within on the bottom outer tube (13), and lower piston (17) is connected with bottom outer tube (13) by outer tube lock dog (16), and bottom outer tube (13) is connected with inner central tube (5) by interior pipe lock dog (18) again.
3, hydraulic double cylinder anchoring packer according to claim 1 is characterized in that hydraulic cylinder is connected by connector (14) with following hydraulic cylinder; The inside and outside footpath of lower piston (17) goes on foot tight mechanism (20) with screw thread respectively and is connected with upper cone (21) in the anchor mechanism.
4, hydraulic double cylinder anchoring packer according to claim 3 is characterized in that connector (14) is provided with radial direction through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420039656 CN2683836Y (en) | 2004-04-01 | 2004-04-01 | Hydraulic twin-tub anchoring packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420039656 CN2683836Y (en) | 2004-04-01 | 2004-04-01 | Hydraulic twin-tub anchoring packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2683836Y true CN2683836Y (en) | 2005-03-09 |
Family
ID=34607835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420039656 Expired - Fee Related CN2683836Y (en) | 2004-04-01 | 2004-04-01 | Hydraulic twin-tub anchoring packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2683836Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109563734A (en) * | 2016-09-14 | 2019-04-02 | 哈利伯顿能源服务公司 | Well bore isolation device with telescopic assembly system |
-
2004
- 2004-04-01 CN CN 200420039656 patent/CN2683836Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109563734A (en) * | 2016-09-14 | 2019-04-02 | 哈利伯顿能源服务公司 | Well bore isolation device with telescopic assembly system |
| CN109563734B (en) * | 2016-09-14 | 2021-04-23 | 哈利伯顿能源服务公司 | Wellbore isolation device with telescoping assembly system |
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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 |