CN2692340Y - Hydraulic bicylinder ancher less packer - Google Patents
Hydraulic bicylinder ancher less packer Download PDFInfo
- Publication number
- CN2692340Y CN2692340Y CN 200420039657 CN200420039657U CN2692340Y CN 2692340 Y CN2692340 Y CN 2692340Y CN 200420039657 CN200420039657 CN 200420039657 CN 200420039657 U CN200420039657 U CN 200420039657U CN 2692340 Y CN2692340 Y CN 2692340Y
- Authority
- CN
- China
- Prior art keywords
- central tube
- hydraulic
- hydraulic cylinder
- packer
- exterior central
- 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 bicylinder ancher less packer for using in the oil industry, adapting to the oil production by layer processes of the oil well. The utility model comprises a hydraulic balance device, a sitting seal device and a screw step tightness device, and upper and lower connecters are arranged on both ends. The sitting seal device comprises a tubing and a hydraulic cylinder. An upper piston is arranged in the hydraulic cylinder. An inner central tube, an upper part outer central tube and a lower part outer central tube are sheathed in the hydraulic cylinder, the inner central tube is connected with the upper and lower connecters. The upper part outer central tube is connected with the hydraulic balance device. The lower outer central tube is connected with the screw step tightness device. One hydraulic cylinder is superimposed on the sitting seal control mechanism. Because of increasing one hydraulic cylinder, the load area of the hydraulic cylinder is enlarged, the essential pressure of the packer setting is decreased, having the function of the low sitting seal pressure, the high assurance coefficient of the underground tube pillar. The safety and low pressure sitting seal of the packer is guaranteed.
Description
Technical field
The utility model belongs to the down-hole oil production instrument of petroleum industry, and particularly hydraulic double cylinder does not have anchoring packer, is applicable to the oil production by layer technology of oil well.
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 hydraulic double cylinder does not have anchoring packer, overcomes that hydraulic packer sets the defective that needs high pressure in the prior art, makes it set pressure and reduces, and can sustain the oil reservoir high pressure again after low pressure sets, and the protection down-hole string reduces production costs.
Use the technical program can reach above-mentioned purpose: hydraulic double cylinder does not have anchoring packer, has Hydraulic Equilibrium Mechanism, setting mechanism and screw thread and goes on foot tight mechanism, and install at two ends, lower contact.Setting mechanism is made up of packing element and hydraulic cylinder, and upper piston is installed in the hydraulic cylinder; Inner central tube, top exterior central tube and bottom exterior central tube wear wherein, and inner central tube is connected with upper and lower joint; The top exterior central tube is connected with Hydraulic Equilibrium Mechanism, and the bottom exterior central tube goes on foot tight mechanism with screw thread and is connected, and setting mechanism is set up a hydraulic cylinder.
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.Behind the packer setting, have and original packer the same withstand voltage properties after high pressure sets, reduced requirement, protected down-hole string, thereby reduced the oil recovery cost of production in oil field the down-hole string bearing capacity.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
Among the figure: top connection 1, deblocking shear pin 2, Hydraulic Equilibrium Mechanism 3, packing element 4, inner central tube 6, cushion rubber 5,8 and 11, upper piston 7, top exterior central tube 9, connector 10, hydraulic cylinder 12, bottom exterior central tube 13, lower piston 14, bottom exterior central tube lock dog 15, inner central tube lock dog 16, screw thread go on foot tight mechanism 17, lower contact 18
The specific embodiment
Below in conjunction with accompanying drawing the utility model is done further detailed description: referring to accompanying drawing, hydraulic double cylinder does not have anchoring packer, has Hydraulic Equilibrium Mechanism 3, setting mechanism and screw thread and goes on foot tight mechanism 17, and install at two ends, lower contact 1 and 18.Setting mechanism is made up of packing element 4 and hydraulic cylinder, and upper piston 7 is installed in the hydraulic cylinder; Inner central tube 6, top exterior central tube 9 and bottom exterior central tube 13 wear wherein, and inner central tube 6 is connected with 18 with upper and lower joint 1; Top exterior central tube 9 is connected with Hydraulic Equilibrium Mechanism 3, and bottom exterior central tube 13 goes on foot tight mechanism 17 with screw thread and is connected, and setting mechanism is set up a hydraulic cylinder.The hydraulic cylinder that setting mechanism increases is made up of connector 10 and lower piston 14, and connector 10 and lower piston 14 are installed in the annular space that is made of hydraulic cylinder 12, top exterior central tube 9 and bottom exterior central tube 13, and lower piston 14 is positioned at the below of connector 10.Lower piston 14 is provided with radial direction through hole, and the internal diameter on its through hole top is equal to or greater than the lower outer diameter of connector 10.Inner central tube 6 and top exterior central tube 9 are provided with pressure transmission hole; Inner central tube 6 and bottom exterior central tube 13 are respectively equipped with inner central tube lock dog mounting groove and bottom exterior central tube lock dog mounting groove, interior dress inner central tube lock dog 16 and bottom exterior central tube lock dog 15.Lower piston 14 is connected with bottom exterior central tube 13 by bottom exterior central tube lock dog 15, and bottom exterior central tube 13 is connected with inner central tube 6 by inner central tube lock dog 16 again, and bottom exterior central tube 13 goes on foot tight mechanism 17 with screw thread and is connected.Cushion rubber 5,8 and 11 is installed in and respectively is connected sealing place.Pressuring pump is suppressed when ground, and when pressure reached inner central tube 6, pressure was delivered to first hydraulic cylinder that upper piston 7 is housed by the pressure transmission hole on the inner central tube 6.Meanwhile, screw thread goes on foot the descent of piston of tight mechanism 17, and the annular space of lower central pipe lock dog 15 peripheries is abdicated, and makes screw thread go on foot tight mechanism 17 and throws off with bottom exterior central tube 13.Pressure is delivered to second hydraulic cylinder that lower piston 14 is housed by the annular space of inner central tube 6 and upper and lower part exterior central tube 9 and 13.It is up that two hydraulic cylinders promote upper piston 7, hydraulic cylinder 12 and lower piston 14 simultaneously, compression packing element 4.Screw thread goes on foot 17 actions of tight mechanism simultaneously, prevents upper and lower piston 7 and 14 retractions.After pressure reached certain value, packer was finished and is set action.During deblocking, on put on joint 1, cut off deblocking shear pin 2, discharge screw thread and go on foot tight mechanism 17, thereby realize deblocking of the present utility model.
Claims (4)
1, hydraulic double cylinder does not have anchoring packer, has Hydraulic Equilibrium Mechanism (3), setting mechanism and screw thread and goes on foot tight mechanism, and install at two ends, lower contact (1) and (18); Setting mechanism is made up of packing element (4) and hydraulic cylinder, and upper piston (7) is installed in the hydraulic cylinder; Inner central tube (6), top exterior central tube (9) and bottom exterior central tube (13) wear wherein, and inner central tube (6) is connected with (18) with upper and lower joint (1); Top exterior central tube (9) is connected with Hydraulic Equilibrium Mechanism (3), and bottom exterior central tube (13) goes on foot tight mechanism (17) with screw thread and is connected, and it is characterized in that setting mechanism sets up a hydraulic cylinder.
2, hydraulic double cylinder according to claim 1 does not have anchoring packer, the hydraulic cylinder that it is characterized in that the setting mechanism increase is made up of connector (10) and lower piston (14), connector (10) and lower piston (14) are installed in the annular space that is made of hydraulic cylinder (12), top exterior central tube (9) and bottom exterior central tube (13), and lower piston (14) is positioned at the below of connector (10).
3, hydraulic double cylinder according to claim 2 does not have anchoring packer, it is characterized in that lower piston (14) is provided with radial direction through hole, and the internal diameter on its through hole top is equal to or greater than the lower outer diameter of connector (10).
4, hydraulic double cylinder according to claim 1 does not have anchoring packer, and inner central tube (6) and top exterior central tube (9) are provided with pressure transmission hole; Inner central tube (6) and bottom exterior central tube (13) are respectively equipped with inner central tube lock dog mounting groove and bottom exterior central tube lock dog mounting groove, interior dress inner central tube lock dog (16) and bottom exterior central tube lock dog (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420039657 CN2692340Y (en) | 2004-04-01 | 2004-04-01 | Hydraulic bicylinder ancher less packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420039657 CN2692340Y (en) | 2004-04-01 | 2004-04-01 | Hydraulic bicylinder ancher less packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2692340Y true CN2692340Y (en) | 2005-04-13 |
Family
ID=34773945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420039657 Expired - Fee Related CN2692340Y (en) | 2004-04-01 | 2004-04-01 | Hydraulic bicylinder ancher less packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2692340Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102027197A (en) * | 2007-12-20 | 2011-04-20 | 越洋塞科外汇合营有限公司 | Telescopic joint mini control panel |
-
2004
- 2004-04-01 CN CN 200420039657 patent/CN2692340Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102027197A (en) * | 2007-12-20 | 2011-04-20 | 越洋塞科外汇合营有限公司 | Telescopic joint mini control panel |
| CN102027197B (en) * | 2007-12-20 | 2014-07-02 | 越洋塞科外汇合营有限公司 | Telescopic joint mini control panel |
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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 |