CN205154107U - Well head hydraulic pressure lifting devices - Google Patents
Well head hydraulic pressure lifting devices Download PDFInfo
- Publication number
- CN205154107U CN205154107U CN201520751892.9U CN201520751892U CN205154107U CN 205154107 U CN205154107 U CN 205154107U CN 201520751892 U CN201520751892 U CN 201520751892U CN 205154107 U CN205154107 U CN 205154107U
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- Prior art keywords
- cylinder
- oil
- seal
- hydraulic
- well liquid
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- Expired - Fee Related
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- 239000003921 oil Substances 0.000 claims abstract description 63
- 239000007788 liquid Substances 0.000 claims abstract description 38
- 238000007789 sealing Methods 0.000 claims abstract description 33
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 17
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 230000001133 acceleration Effects 0.000 claims description 3
- 238000013016 damping Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 abstract description 18
- 239000003129 oil well Substances 0.000 abstract description 8
- 238000005065 mining Methods 0.000 abstract description 5
- 230000006378 damage Effects 0.000 abstract description 3
- 238000002955 isolation Methods 0.000 abstract description 3
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 abstract 6
- 208000027418 Wounds and injury Diseases 0.000 abstract 1
- 230000009977 dual effect Effects 0.000 abstract 1
- 238000004146 energy storage Methods 0.000 abstract 1
- 208000014674 injury Diseases 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 238000010030 laminating Methods 0.000 abstract 1
- 230000003028 elevating effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000010727 cylinder oil Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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- Fluid-Pressure Circuits (AREA)
Abstract
The utility model relates to an use oil gas mining devices, specifically say to relate to a well head hydraulic pressure lifting devices. The utility model discloses a well head hydraulic pressure lifting devices, including hydro -cylinder and well liquid sealing cylinder, the hydro -cylinder includes cylinder body, piston and piston rod, and well liquid sealing cylinder is provided with first sealing member, this first sealing member and piston and piston rod constitution hydraulic oil inner chamber including keeping apart pipe, sealed pole in the lower part of hydro -cylinder, be provided with the second sealing member at well liquid sealing cylinder inner chamber, closely the laminating is sealed with keeping apart inside pipe wall and sealed pole respectively for this second sealing member. Through adopting hydro -cylinder and well liquid sealing cylinder dual -seal structure, and autonomous working separately, mutual isolation between the hydraulic oil of realizing driving oil cylinder work and the well liquid of oil well output prevents well liquid damage hydro -cylinder and pollution beam -pumping unit hydraulic system, installation energy storage ware between hydro -cylinder and hydraulic system is eliminated and is pumped system vibration in the pit to beam -pumping unit hydraulic system's injury, ensures that hydraulic pressure oil pumping system reliably works the long -life.
Description
Technical field
The utility model relates to a kind of oil field oil-gas mining device, relates to a kind of wellhead hydraulic lifting device specifically.
Background technology
In the power-equipment of oil exploitation ground, hydraulic pumping unit is to provide one of major way of oil well lifting power, and well head elevating ram is the important component part of hydraulic pumping unit.When conventional elevating ram seat is loaded on well head, piston rod is connected with sucker rod, and piston rod directly contacts well liquid, and well liquid easy damaged oil cylinder also invades and contaminated liquid pressing system, causes the system failure, causes the generation of the situations such as termination of pumping, thus affect oil-gas mining efficiency; Simultaneously for complex working condition oil wells such as heavy oil wells, the not enough wells of feed flow, down-hole oil pumping system often produces larger oscillating load, when using conventional elevating ram, vibrating and being directly passed to hydraulic system by oil cylinder and hydraulic oil, affecting the hydraulic work system life-span.
Utility model content
For above-mentioned technical problem existing in prior art, the utility model proposes a kind of wellhead hydraulic lifting device sealing reliably, alleviate hydraulic system vibration, not only by oil cylinder and well liquid sealing cylinder seal isolation, make it work alone separately, and effectively can alleviate the impact of roofbolt vibration on hydraulic system in oil-gas mining process.
For solving the problems of the technologies described above, a kind of wellhead hydraulic lifting device of the present utility model, comprise oil cylinder and well liquid sealing cylinder, described oil cylinder and described well liquid sealing cylinder are mechanically connected, described oil cylinder comprises cylinder body, be placed in the piston of cylinder cavity and piston rod close-connected with piston, described well liquid sealing cylinder comprises isolated tube and seal bar, described piston rod is connected with seal bar, the cylinder body bottom of described oil cylinder is provided with oil inlet and outlet, this oil inlet and outlet is connected with hydraulic system by hydraulic line, the bottom of described cylinder cavity is provided with the first seal, this first seal fits tightly sealing with cylinder inner bore surface and piston rod respectively, this first seal, cylinder body, piston and piston rod form oil cylinder hydraulic oil inner chamber jointly, described well liquid sealing cylinder inner chamber is provided with the second seal, and this second seal fits tightly with isolated tube inwall and seal bar respectively.
Improve as one of the present utility model, between described oil cylinder oil inlet and outlet and hydraulic system, be provided with accumulator.
As another improvement of the present utility model, between described accumulator and hydraulic system, be provided with liquid control check valve.
Described accumulator can be gas-liquid insulation or spring-loaded vibration damping accumulator.
Described cylinder upper end portion is also provided with air filter, and this oil cylinder bottom is provided with inlet.
As another improvement of the present utility model, the top end face of described oil cylinder 1 is provided with velocity of displacement acceleration transducer.
As of the present utility model another improve, described first seal, the second seal are the structure that elastic sealing elements and rigid seal element combine.
Compared with prior art, the utility model has the advantage of, by adopting oil cylinder and well liquid sealing cylinder double sealing structure, and working alone separately, realize between the hydraulic oil of driving cylinder efficient and the well liquid of oil well output mutually isolated, prevent well liquid from damaging oil cylinder and polluting pumping unit hydraulic system; Between oil cylinder and hydraulic system, accumulator is installed, can vibrational energy that effectively oil pumping system produces under absorption well, eliminate vibration and the vibration of hydraulic system is injured, avoid causing the system failure, guarantee hydraulic oil pumping system long-life reliably working.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of wellhead hydraulic lifting device of the present utility model;
Fig. 2 is hoisting system operating diagram.
Detailed description of the invention
Relevant detailed description of the present utility model and technology contents, coordinate accompanying drawing to be described as follows, but accompanying drawing only provides with reference to the use with explanation, is not used for being limited the utility model.
As shown in Figure 1, wellhead hydraulic lifting device, comprise oil cylinder 1 and well liquid sealing cylinder 2, oil cylinder 1 and well liquid sealing cylinder 2 are mechanically connected, oil cylinder 1 comprises cylinder body 11, be placed in the piston 12 of oil cylinder 1 inner chamber and piston rod 13 close-connected with piston 12, well liquid sealing cylinder 2 comprises isolated tube 21 and seal bar 22, piston rod 13 is connected with seal bar 22, the cylinder body bottom of oil cylinder 1 is provided with oil inlet and outlet 16, this oil inlet and outlet 16 is connected with hydraulic system 18 by hydraulic line 19, the bottom of oil cylinder 1 inner chamber is provided with the first seal 14, this first seal 14, cylinder body 11, piston 12 and piston rod 13 form hydraulic oil inner chamber jointly, to hold the hydraulic oil driving cylinder efficient, this first seal 14 fits tightly with cylinder body 11 inwall and piston rod 13 respectively, to guarantee sealing, well liquid sealing cylinder 2 inner chamber is provided with the second seal 23, and this second seal 23 fits tightly sealing with isolated tube 21 inwall and seal bar 22 respectively.By the double containment of the first seal 14 and the second seal 23 with the use of, the hydraulic oil driving oil cylinder 1 to work is opened with the well liquid of oil well output is completely isolated, guarantees that the two is independent of each other, effectively prevent well liquid from damaging oil cylinder 1 and pollution pumping unit hydraulic system 18.In a preferred embodiment, inlet 17 is also provided with in oil cylinder 1 bottom, can make by the first seal 14 by inlet 17, isolated tube 21, the sealed cavity that seal bar 22 is formed with the second seal 23 communicates with air, also can by inlet 17 to by the first seal 14, isolated tube 21, insulating liquid or hydraulic oil is injected in the sealed cavity that seal bar 22 and the second seal 23 are formed, to reach the effect of isolation further, effectively avoid causing because of oil cylinder 1 seal failure well liquid to invade and polluting pumping unit hydraulic system, thus guarantee that system is normally run.Accumulator 3 is provided with between oil inlet and outlet 16 and hydraulic system 18, accumulator 3 is preferably gas-liquid insulation or spring-loaded vibration damping accumulator, accumulator 3 can vibrational energy that effectively oil pumping system produces under absorption well, eliminate vibration to injure the vibration of hydraulic system 18, avoid causing the system failure, guarantee hydraulic oil pumping system long-life reliably working.Meanwhile, between accumulator 3 and hydraulic system 18, be provided with liquid control check valve 5, by the control of liquid control check valve 5, effectively can realize oil cylinder 1 accurately location and brake.Air filter 15 can also be provided with in oil cylinder 1 upper end, avoid dust, that impurity enters oil cylinder 1 is inner, cause oil cylinder 1 to damage.The top end face of oil cylinder 1 is provided with speed displacement acceleration displacement transducer 4, can Real-Time Monitoring piston run location and abnormal conditions, once occur abnormal, by automatically closing hydraulic system termination of pumping rapidly, be beneficial to technician to check in time, further develop to avoid complex situations.
In a preferred embodiment, the structure that the first seal 14, second seal 23 all adopts elastic sealing elements and rigid seal element to combine, can meet the requirement of sealing and abrasion resistance simultaneously.
As shown in Figure 2, when wellhead hydraulic lifting device is applied at the scene, seal bar 22 is connected with sucker rod 7 with the oil well pump 20 in down-hole oil tube 8 by crossover sub 9, flange 6 is connected with special flow tee 10, and hydraulic control one-way valve 5 is connected by hydraulic power pipeline and hydraulic control lines and pumping unit hydraulic system 18.In the normal recovery process of oil gas, hydraulic system 18 pumps into high pressure liquid force feed by hydraulic line 19 and hydraulic control one-way valve 5 in hydraulic pressure lifting device, hydraulic oil enters in oil cylinder 1 through hydraulic line 19 and oil inlet and outlet 16, promote piston 12 up, drive piston rod 13, seal bar 22, sucker rod 7 and downhole pump 20 up.After reaching upstroke end, wellhead hydraulic lifting device commutates under the control of hydraulic system 18, piston 12, piston rod 13, seal bar 22, sucker rod 7 and oil well pump 20 run downwards, and the hydraulic oil of cylinder cavity is by oil inlet and outlet 16, hydraulic line 19 and hydraulic control one-way valve 5 hydraulic return system 18.In piston about 12 stroke, up in the well liquid of the oil well annular space between oil pipe 8 and sucker rod 7, and enter ground petroleum pipeline eventually through the outlet of special flow tee 10, complete an exploitation stroke.Wellhead hydraulic lifting device, under the driving of hydraulic oil, drives downhole pump 20 to move back and forth again and again by sucker rod 7, to reach the object of oil-gas mining.In lifting process, hydraulic oil can enter accumulator 3 by hydraulic line 19, when down-hole oil pumping system produces vibration, accumulator 3 stabilizes the fluctuation of in-oil cylinder pressure oil by absorbing or discharge hydraulic oil, thus effectively avoids the vibration passing of down-hole oil pumping system to hydraulic system.
The foregoing is only preferred embodiment of the present utility model, be not used to limit the scope of the claims of the present utility model, other use the equivalence of patent spirit of the present utility model to change, and all should all belong to the scope of the claims of the present utility model.
Claims (8)
1. a wellhead hydraulic lifting device, comprise oil cylinder and well liquid sealing cylinder, it is characterized in that: described oil cylinder is connected with described well liquid sealing cylinder machinery, described oil cylinder comprises cylinder body, be placed in the piston of inner chamber of cylinder block and piston rod close-connected with piston, described well liquid sealing cylinder comprises isolated tube, seal bar, described piston rod is connected with seal bar, the cylinder body bottom of described oil cylinder is provided with oil inlet and outlet, this oil inlet and outlet is connected with hydraulic system by hydraulic line, the bottom of described oil cylinder is provided with the first seal, this first seal fits tightly sealing with cylinder inner bore surface and piston rod respectively, this first seal, cylinder body, piston and piston rod form oil cylinder hydraulic oil inner chamber jointly, described well liquid sealing cylinder inner chamber is provided with the second seal, and this second seal fits tightly sealing with isolated tube inwall and seal bar respectively.
2. a kind of wellhead hydraulic lifting device as claimed in claim 1, is characterized in that: between described oil inlet and outlet and hydraulic system, be provided with accumulator.
3. a kind of wellhead hydraulic lifting device as claimed in claim 2, is characterized in that: between described accumulator and hydraulic system, be provided with liquid control check valve.
4. a kind of wellhead hydraulic lifting device as claimed in claim 2, is characterized in that: described accumulator is gas-liquid insulation or spring-loaded vibration damping accumulator.
5. a kind of wellhead hydraulic lifting device as described in any one of Claims 1-4, is characterized in that: described cylinder upper end portion is also provided with air filter.
6. a kind of wellhead hydraulic lifting device as described in any one of Claims 1-4, is characterized in that: described oil cylinder bottom is provided with inlet.
7. a kind of wellhead hydraulic lifting device as claimed in claim 6, is characterized in that: the top end face of described oil cylinder is provided with velocity of displacement acceleration transducer.
8. a kind of wellhead hydraulic lifting device as claimed in claim 7, is characterized in that: described first seal, the second seal are the structure that elastic sealing elements and rigid seal element combine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520751892.9U CN205154107U (en) | 2015-09-25 | 2015-09-25 | Well head hydraulic pressure lifting devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520751892.9U CN205154107U (en) | 2015-09-25 | 2015-09-25 | Well head hydraulic pressure lifting devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205154107U true CN205154107U (en) | 2016-04-13 |
Family
ID=55689815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520751892.9U Expired - Fee Related CN205154107U (en) | 2015-09-25 | 2015-09-25 | Well head hydraulic pressure lifting devices |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205154107U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106555570A (en) * | 2015-09-25 | 2017-04-05 | 中国石油化工股份有限公司 | Wellhead hydraulic lifting device |
| CN108131123A (en) * | 2016-11-30 | 2018-06-08 | 中国石油天然气股份有限公司 | An acid injection device and method thereof |
| CN108194048A (en) * | 2018-02-22 | 2018-06-22 | 廊坊开发区森德石油设备有限公司 | A kind of stifled well equipment of frost |
-
2015
- 2015-09-25 CN CN201520751892.9U patent/CN205154107U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106555570A (en) * | 2015-09-25 | 2017-04-05 | 中国石油化工股份有限公司 | Wellhead hydraulic lifting device |
| CN108131123A (en) * | 2016-11-30 | 2018-06-08 | 中国石油天然气股份有限公司 | An acid injection device and method thereof |
| CN108131123B (en) * | 2016-11-30 | 2020-06-09 | 中国石油天然气股份有限公司 | A kind of acid liquid injection device and method thereof |
| CN108194048A (en) * | 2018-02-22 | 2018-06-22 | 廊坊开发区森德石油设备有限公司 | A kind of stifled well equipment of frost |
| CN108194048B (en) * | 2018-02-22 | 2024-03-01 | 廊坊开发区森德石油设备有限公司 | Freezing well plugging equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160413 Termination date: 20200925 |