CN204457499U - Oil pipe running and pulling device in pressure balance workover rig - Google Patents
Oil pipe running and pulling device in pressure balance workover rig Download PDFInfo
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- CN204457499U CN204457499U CN201420797082.2U CN201420797082U CN204457499U CN 204457499 U CN204457499 U CN 204457499U CN 201420797082 U CN201420797082 U CN 201420797082U CN 204457499 U CN204457499 U CN 204457499U
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- 239000012530 fluid Substances 0.000 claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 239000000945 filler Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 abstract description 18
- 238000007789 sealing Methods 0.000 description 23
- 229910000831 Steel Inorganic materials 0.000 description 20
- 239000010959 steel Substances 0.000 description 20
- 238000000034 method Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 13
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000001351 cycling effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Abstract
The utility model discloses the oil pipe running and pulling device in a kind of pressure balance workover rig, well fluid cylinder system, it comprises the first cylinder barrel and second cylinder barrel mutually sheathed with the first cylinder barrel; First fixed mechanism, it comprises the first noumenon fixed with outer cylinder, and the first noumenon has the first passage be connected with the working chamber of the first cylinder barrel; Second fixed mechanism, it comprises the second body fixed with inner cylinder tube; Compensating cylinder, it comprises compensating cylinder cylinder barrel, the piston rod be installed on the first noumenon, piston rod wears and is fixed in compensating cylinder cylinder barrel, piston rod is connected with compensating cylinder piston, compensating cylinder piston, piston rod and compensating cylinder cylinder barrel form the working chamber of compensating cylinder, piston rod inner has second channel, and second channel is connected with the working chamber of first passage and compensating cylinder.The load of actuator cylinder when the utility model effectively can alleviate workover treatment, reduces complete machine installed power, and well liquid can be avoided the pollution on ground.
Description
Technical field
The utility model relates to oil field operation technical field, the oil pipe running and pulling device particularly in a kind of pressure balance workover rig.
Background technology
The workover rig of the one that pressure balance workover rig is researched and developed mainly for the heavy repair task of water injection well in oil fields not " draining overflow " (Operating Pressure), usually before well workover, need bleed off pressure or adopt well killing fluid kill-job process to water injection well, polymer injection well, oil well, to prevent from, in well workover process, gas blowout accident occurs.Pressure balance workover rig can be implemented in well when having fluid pressure and carries out well workover or a lower tubular column operation, gas blowout accident can not occur.Usual pressure balance workover rig is by hydraulic power station, derrick, driving actuator cylinder, pulley and steel cable system, operating desk, pulling winch, balance winch, loose body (comprise traveling slip, rotating disk, travelling blowout preventer form), fixed body (comprising Wellhead packer group, fixing seal slips), well fluid cylinder is had between fixed body and loose body, well fluid cylinder is the telescopic hollow column plug cylinder of two-stage, has sealing between two-stage cylinder.The outer cylinder bottom of well fluid cylinder and fixed body are tightly connected, and the inner cylinder tube top of well fluid cylinder and loose body are tightly connected.The state of this pressure balance workover rig before Operating Pressure upper lifting pipe post is, upper travelling half envelope blowout preventer is closed, and traveling slip closes clamping oil pipe, and half envelope blowout preventer on fixed body and fixing seal slips are opened.Hydraulic coupling drives power cylinder steel cable, and steel cable promotes loose body by pulley, and oil pipe moves upward under traveling slip drives.Without relative motion between the sealing of travelling half envelope blowout preventer and oil pipe, be in static seal state.Half envelope blowout preventer on fixed body and stationary slip are opened, and oil pipe external surface and half seals between the sealing of blowout preventer and do not contact.When loose body moves downward, in opened condition, half envelope blowout preventer on fixed body and slips be closed condition for travelling half envelope blowout preventer and traveling slip, and on travelling half envelope blowout preventer and fixed body half seals the sealing of blowout preventer and oil pipe external surface dynamic friction does not occur.So, on loose body partly seal on blowout preventer, slips and fixed body partly seal blowout preventer, slips is alternately opened, and closes and to fulfil assignment task, half envelope blowout preventer sealing can not be worn and torn.
This pressure balance workover rig adopts well fluid cylinder to carry out sealing wellhead liquid out between travelling half envelope blowout preventer and fixing half envelope blowout preventer.Travelling blowout preventer partly seals blowout preventer, slips alternation switch with fixing, and complete workover treatment with pressure, the sealing achieving half envelope blowout preventer is not is not well worn and torn.But which results in hydraulic coupling in well, to promote the power that the second cylinder barrel upwards pushes up very large, during lower oil pipe, actuator cylinder drive pulley steel cable rises and to exert oneself to be greater than in well hydraulic coupling to the upper top power of the second cylinder barrel, such could by oil pipe G.I.H, and the speed removed is very slow, and then causes needing very large complete machine installed power.
Utility model content
In order to overcome the above-mentioned defect of prior art, technical problem to be solved in the utility model there is provided the oil pipe running and pulling device in a kind of pressure balance workover rig, and it can solve when lower oil pipe, the problem that in well, hydraulic coupling is large to the upper top power of the second cylinder barrel.
Concrete technical scheme of the present utility model is:
An oil pipe running and pulling device in pressure balance workover rig, it is characterized in that, it comprises:
Well fluid cylinder system, it comprises first cylinder barrel and second cylinder barrel mutually sheathed with described first cylinder barrel with an axis, and described second cylinder barrel can slide along relatively described first cylinder barrel of the axis direction of described first cylinder barrel;
First fixed mechanism, it comprises the first noumenon fixed with described first cylinder barrel, and described the first noumenon has the first passage be connected with the working chamber of described first cylinder barrel;
Loose body, its top being positioned at described second fixed mechanism also can be spacing to oil pipe;
Second fixed mechanism, it comprises the second body fixed with described second cylinder barrel;
Fixed body, its below being positioned at described first fixed mechanism also can be spacing to oil pipe;
Compensating cylinder, it comprises the compensating cylinder cylinder barrel be installed on described second body, be installed in the piston rod on described the first noumenon, described piston rod wears and is fixed in described compensating cylinder cylinder barrel, described piston rod is connected with compensating cylinder piston, described compensating cylinder piston, described piston rod and described compensating cylinder cylinder barrel form the working chamber of compensating cylinder, described compensating cylinder piston can slide along the axis direction of described first cylinder barrel relative to described compensating cylinder cylinder barrel, described piston rod inner has second channel, described second channel is connected with the working chamber of described first passage and described compensating cylinder.
Preferably, described compensating cylinder is one-way cylinder, and the chamber in described compensating cylinder with described piston rod is working chamber, and the chamber without described piston rod is connected with air.
Preferably, described compensating cylinder is two, and it is symmetricly set on the first noumenon and the second body, and the sectional area sum of the working chamber of described compensating cylinder equals the sectional area of described second cylinder barrel working chamber.
Preferably, described piston rod offers the first through hole at the end of the closure with described compensating cylinder piston, described first through hole is connected with the working chamber of described second channel, described compensating cylinder, and described underpart of the piston rod offers the second through hole being communicated with described second channel and described first passage.
Preferably, described compensating cylinder cylinder barrel side wall ring is to the centralizer filler ring be provided with for playing centralizing function.
Preferably, described loose body comprises traveling slip, rotating disk, moves about and partly seal blowout preventer.
The utility model has following remarkable beneficial effect:
Difference stable equilibrium cylinder cylinder barrel and piston rod on the first noumenon and the second body, when fluid pressure produces to lifting force the second cylinder barrel, because the working chamber of the second cylinder barrel with compensating cylinder cylinder barrel is communicated with, the liquid of the second cylinder barrel can flow into compensating cylinder cylinder barrel by first passage and second channel, the fluid pressure of the second cylinder barrel can return to previous level, almost remain unchanged, so required thrust upwards just diminishes, thus the load of actuator cylinder when alleviating workover treatment, and then reduce complete machine installed power.
Second cylinder barrel is connected with the working chamber of compensating cylinder, propose from well or under enter oil pipe time compensating cylinder cylinder barrel and the second cylinder barrel in liquid repeatedly move back and forth, thus effective for the liquid in pit shaft shutoff cannot be flowed out in pit shaft, thus avoid the pollution of well liquid to ground.
Accompanying drawing explanation
Accompanying drawing described here only for task of explanation, and is not intended to limit the utility model scope of disclosure by any way.In addition, the shape of each parts in figure and proportional sizes etc. are only schematic, for helping understanding of the present utility model, are not the shape and the proportional sizes that specifically limit each parts of the utility model.Those skilled in the art, under instruction of the present utility model, can select various possible shape and proportional sizes to implement the utility model as the case may be.
Fig. 1 is the structural representation that oil pipe running and pulling device in the utility model pressure balance workover rig removes process status 1.
Fig. 2 is the structural representation that oil pipe running and pulling device in the utility model pressure balance workover rig removes process status 2.
The Reference numeral of above accompanying drawing: 1, fixed body; 11, well head four-way; 12, full blowout preventer is sealed; 13, for subsequent usely partly blowout preventer is sealed; 14, partly blowout preventer is sealed; 15, stationary slip; 2, loose body; 21, traveling slip; 22, rotating disk; 23, travellingly partly blowout preventer is sealed; 3, fleet wheel system; 31, lower sheave; 32, steel cable is pressed down; 33, steel cable is carried on; 34, top sheave; 5, well fluid cylinder system; 51, the second cylinder barrel; 52, the first cylinder barrel; 53, well liquid sealing body; 54, soft seal; 55, the first sealing cylinder circle; 6, compensating cylinder; 61, compensating cylinder cylinder barrel; 62, compensating cylinder first locknut; 63, sealing in compensating cylinder; 64, the second seal; 65, piston rod packing; 66, piston rod; 661, the first through hole; 662, the second through hole; 663, second channel; 67, plug; 68, the first seal; 69, compensating cylinder piston; 610, the 3rd seal; 7, the first fixed mechanism; 71, the first noumenon; 711, first passage; 72, the 4th seal; 73, snap ring; 74, locknut; 8, the second fixed mechanism; 81, the second body; 82, the compensating cylinder back of the body is female; 83, compensating cylinder second locknut; 84, the second sealing cylinder circle; 9, centralizer.
Detailed description of the invention
By reference to the accompanying drawings with the description of the utility model detailed description of the invention, can clearly understand details of the present utility model.But detailed description of the invention of the present utility model described here, only for explaining the purpose of this utility model, and can not to be understood as by any way be to restriction of the present utility model.Under instruction of the present utility model, technician can conceive based on distortion possible arbitrarily of the present utility model, and these all should be regarded as belonging to scope of the present utility model.
Fig. 1 is the structural representation that oil pipe running and pulling device in the utility model pressure balance workover rig removes process status 1, as shown in Figure 1, oil pipe running and pulling device in a kind of pressure balance workover rig, it is characterized in that, it comprises: well fluid cylinder system, it comprises first cylinder barrel and second cylinder barrel mutually sheathed with the first cylinder barrel with an axis, and the second cylinder barrel can slide along relative first cylinder barrel of the axis direction of the first cylinder barrel; First fixed mechanism, it comprises the first noumenon fixed with the first cylinder barrel, and the first noumenon has the first passage be connected with the working chamber of the first cylinder barrel; Loose body, its top being positioned at the second fixed mechanism also can be spacing to oil pipe; Second fixed mechanism, it comprises the second body fixed with the second cylinder barrel; Fixed body, its below being positioned at the first fixed mechanism also can be spacing to oil pipe; Compensating cylinder, it comprises the compensating cylinder cylinder barrel be installed on the second body, the piston rod be installed on the first noumenon, piston rod wears and is fixed in compensating cylinder cylinder barrel, piston rod is connected with compensating cylinder piston, compensating cylinder piston, piston rod and compensating cylinder cylinder barrel form the working chamber of compensating cylinder, compensating cylinder piston can slide along the axis direction of the first cylinder barrel relative to compensating cylinder cylinder barrel, and piston rod inner has second channel, and second channel is connected with the working chamber of first passage and compensating cylinder.
Specifically, well fluid cylinder system 5, it comprises the second cylinder barrel 51 and the first cylinder barrel 52 be set in outside the second cylinder barrel 51, second cylinder barrel 51 can slide in the axial direction relatively with the first cylinder barrel 52, soft seal 54 and well liquid sealing body 53 is connected with in one end of the first cylinder barrel 52, guarantee second cylinder barrel 51 like this and the sealing of the first cylinder barrel 52 in the process of relative sliding, prevent the material in the second cylinder barrel 51 working chamber from leaking.First fixed mechanism 7 comprises the first noumenon 71 with first passage 711, first cylinder barrel 52 is arranged in the middle part of the first noumenon 71, the effect of sealing is reached between the two by the first sealing cylinder circle 55, first passage 711 is opened in the inside in the first noumenon 71, is connected with the working chamber of the first cylinder barrel 52 with the second cylinder barrel 51.Second fixed mechanism 84, comprises the middle part that the second body 81, second cylinder barrel 51 is arranged in the second body 81, is fixedly connected with the second body 81, and the second body 81 and the second cylinder barrel 51 junction are arranged with the second sealing cylinder circle 84, for ensureing sealing effectiveness.Compensating cylinder 6, it comprises compensating cylinder cylinder barrel 61, and put the compensating cylinder piston 69 in compensating cylinder cylinder barrel 61, be connected to the piston rod 66 of compensating cylinder piston 69, compensating cylinder piston 69 can slide in the axial direction relatively with compensating cylinder cylinder barrel 61.Compensating cylinder 6 is one-way cylinder, and the chamber in compensating cylinder 6 with piston rod 66 is working chamber, and the chamber without piston rod 66 is connected with air.Compensating cylinder piston 69 can be hollow circular tube, the cavity of pipe is second channel 663, one end of compensating cylinder piston 69 is fixedly connected on the middle part of compensating cylinder piston 69, piston rod 66 offers the first through hole 661 at the end of the closure with compensating cylinder piston 69, and the first through hole 661 like this makes second channel 663 be connected with the working chamber of compensating cylinder cylinder barrel 61.Piston rod 66 is offering with the junction of the first noumenon 71 the second through hole 662 being communicated with second channel 663 and first passage 711, so, by first passage 711 and second channel 663, the working chamber of compensating cylinder 6 is connected with the working chamber of the second cylinder barrel 51.At the second through hole 662 place, piston rod 66 and the first noumenon 71 touching position are provided with the 4th seal 72, in order to ensure the sealing effectiveness at the second through hole 662 place.One end of piston rod 66 compensating cylinder piston 69 is dorsad provided with the first seal 68 for sealing and plug 67, and the second channel 663 in piston rod 66 is separated with extraneous.Piston rod 66 is arranged in the first noumenon 71 place and is provided with locknut 74 for sealing and snap ring 73.Compensating cylinder cylinder barrel 61 wears and is fixed in the second body 81, is fixed by the compensating cylinder back of the body female 82 and compensating cylinder first locknut 62.Compensating cylinder cylinder barrel 61 side wall ring is to the centralizer filler ring be provided with for playing centralizing function, centralizer filler ring can be connected with centralizer 9, and compensating cylinder cylinder barrel 61 to be provided with sealing 63 in the second seal 64 for sealing, compensating cylinder, compensating cylinder second locknut 83, piston rod packing 65 at piston rod 66 through the one end in direction.The 3rd seal 610 is provided with, to strengthen the sealing effectiveness between compensating cylinder piston 69 and compensating cylinder cylinder barrel 61 between compensating cylinder piston 69 and compensating cylinder cylinder barrel 61.Be fixedly connected with loose body 2 in the upper end of the second body 81 and the second cylinder barrel 51, loose body 2 comprises traveling slip 21, rotating disk 22, travelling half envelope blowout preventer 23.Fleet wheel system 3 comprises lower sheave 31, presses down steel cable 32, on carry steel cable 33, top sheave 34.Rotating disk 22 for connect in pressure balance workover rig on carry steel cable 33 and press down steel cable 32, control to carry steel cable 33 and press down steel cable 32 to drive moving up and down of rotating disk 22 by top sheave 34 and lower sheave 31, thus drive loose body 2, second body 81 and compensating cylinder cylinder barrel 61, second cylinder barrel 51 to move up and down.Traveling slip 21 may be used for when operation clamping oil pipe, and sealed separation is played in the effect of travelling half envelope blowout preventer 23.Comprise stationary slip 15, half with the fixed body 1 be connected below the first cylinder barrel 52 seal blowout preventer 14, for subsequent usely partly seal blowout preventer 13, entirely seal blowout preventer 12, well head four-way 11.Stationary slip 15 is when operation for clamping oil pipe, and half envelope blowout preventer 14 is upper and lower for sealed separation, and well head four-way 11 is for the connection of sleeve pipe and pressure balance workover rig.When operation, oil pipe is through in loose body 2, the first noumenon 71, second cylinder barrel 51, first cylinder barrel 52, second body 81, fixed body 1 to carry out removing oil pipe.
Operating principle of the present utility model is as follows:
When operation, well head four-way 11 connects with oil well casing, and oil pipe is through in loose body 2, the first noumenon 71, second cylinder barrel 51, first cylinder barrel 52, second body 81, fixed body 1, and state as shown in Figure 1.When carrying out Operating Pressure plays oil pipe, travelling half envelope blowout preventer 23 is closed, and traveling slip 21 closes clamping oil pipe, and stationary slip 15, the half envelope blowout preventer 14 of fixed body 1 are opened.Steel cable 33 is carried on driving, make to carry steel cable 33 and drive rotating disk 22, and then drive whole loose body 2 to move upward, because traveling slip 21 locks oil pipe, make oil pipe is carried by traveling slip 21, Fig. 2 is the structural representation that oil pipe running and pulling device in the utility model pressure balance workover rig removes process status 2, and the state after above carrying as shown in Figure 2.In the process, second cylinder barrel 51 and the second cylinder barrel 51 relative sliding pull open, the working chamber volume of the second cylinder barrel 51 becomes large, compensating cylinder cylinder barrel 61 under the drive of the second body 81 on carry, make the working chamber smaller volume in compensating cylinder 6, because the working chamber in the second cylinder barrel 51 is connected with the working chamber in compensating cylinder 6 with second channel 663 by first passage 711, so liquid in the working chamber of compensating cylinder 6 or gas can flow in the working chamber in the second cylinder barrel 51, the pressure maintained in the process in two working chambers is in equilibrium state, can not occur to increase or reduce, change like this reduces the active force needed when carrying, and then complete machine installed power can be reduced.When oil pipe running and pulling device in this pressure balance workover rig resets, travelling half envelope blowout preventer 23 is opened, and traveling slip 21 is opened, and the stationary slip 15 of fixed body 1 closes locking oil pipe, half envelope blowout preventer 14 is closed.Loose body 2 is made by pressing down steel cable 32, compensating cylinder cylinder barrel 61, second body 81 moves downward, second cylinder barrel 51 and the second cylinder barrel 51 relative sliding shrink, working chamber smaller volume in second cylinder barrel 51, the working chamber volume of compensating cylinder 6 becomes large, because the working chamber in the second cylinder barrel 51 is connected with the working chamber in compensating cylinder 6 with second channel 663 by first passage 711, so liquid in working chamber in the second cylinder barrel 51 or gas flow in the working chamber of compensating cylinder 6, the pressure maintained in the process in two working chambers is in equilibrium state, can not occur to increase or reduce, thus reduce the active force needed when pressing down steel cable 32, and then reduce complete machine installed power.According to above-mentioned steps cycling, travelling half envelope blowout preventer 23 on loose body 2, traveling slip 21 seal blowout preventer 14 with the stationary slip 15 on fixed body 1, half and alternately open, close, constantly by oil pipe, a section is upwards mentioned, and has finally completed the job task of oil pipe.Simultaneously, second cylinder barrel 51 can flow back and forth mutually with the liquid in compensating cylinder cylinder barrel 61, the phenomenon that internal pressure increases can not occur, so the liquid in well can not be stressed, impact is out compacted, thus solves the problem of the fluid discharge pollution in well fluid cylinder.
When carrying out entering oil pipe under Operating Pressure, original state as shown in Figure 2, close, and traveling slip 21 closes clamping oil pipe by travelling half envelope blowout preventer 23, and stationary slip 15, the half envelope blowout preventer 14 of fixed body 1 are opened.By pressing down, steel cable 32 makes loose body 2, compensating cylinder cylinder barrel 61, second body 81 moves downward, and because travelling half envelope blowout preventer 23 is closed, traveling slip 21 closes clamping oil pipe, so oil pipe moves downward together, is sent down in sleeve pipe.In this process, second cylinder barrel 51 and the second cylinder barrel 51 relative sliding shrink, working chamber smaller volume in second cylinder barrel 51, working chamber volume in compensating cylinder 6 becomes large, because the working chamber in the second cylinder barrel 51 is connected with the working chamber of second channel 663 with compensating cylinder 6 by first passage 711, so liquid in working chamber in the second cylinder barrel 51 or gas flow in the working chamber of compensating cylinder 6, the pressure maintained in the process in two working chambers is in equilibrium state, can not occur to increase or reduce, reduce the active force needed when pressing down steel cable 32, and then reduce complete machine installed power.When oil pipe running and pulling device in this pressure balance workover rig resets, travelling half envelope blowout preventer 23 is opened, and traveling slip 21 is opened, and the stationary slip 15 of fixed body 1 closes locking oil pipe, half envelope blowout preventer 14 is closed.On driving, carry steel cable 33, make to carry steel cable 33 and drive rotating disk 22, and then drive whole loose body 2 to move upward, because traveling slip 21 is opened, do not lock oil pipe, so oil pipe can not move upward in this process.According to above-mentioned steps cycling, travelling half envelope blowout preventer 23 on loose body 2, traveling slip 21 seal blowout preventer 14 with the stationary slip 15 on fixed body 1, half and alternately open, close, constantly by a section G.I.H of oil pipe, finally complete down the job task of oil pipe.
Difference stable equilibrium cylinder cylinder barrel 61 and piston rod 66 on the first noumenon 71 and the second body 81, when fluid pressure produces to lifting force the second cylinder barrel 51, because the second cylinder barrel 51 is communicated with the working chamber of compensating cylinder 6, the liquid of the second cylinder barrel 51 can flow into compensating cylinder cylinder barrel 61 by first passage 711 and second channel 663, the fluid pressure of the second cylinder barrel 51 can return to previous level, almost remain unchanged, so required thrust upwards just diminishes, thus the load of actuator cylinder when alleviating workover treatment, and then reduce complete machine installed power.
The working chamber of the second cylinder barrel 51 and compensating cylinder 6 all communicates, propose from well or under enter oil pipe time compensating cylinder cylinder barrel 61 and the second cylinder barrel 51 in liquid repeatedly move back and forth, thus effective for the liquid in pit shaft shutoff cannot be flowed out in pit shaft, thus avoid well liquid to the pollution on ground.
In a preferred embodiment, compensating cylinder 6 can be two, it is symmetricly set on the first noumenon and the second body, the sectional area sum of the working chamber of compensating cylinder 6 equals the sectional area of the second cylinder barrel 51 working chamber, so, in operation, liquid can keep equal-volume when flowing between compensating cylinder cylinder barrel 61 and the second cylinder barrel 51 all the time, any pressure produced because volume is not of uniform size can not be there is in compensating cylinder cylinder barrel 61 and the second cylinder barrel 51, and then aerodynamic power during better reduction workover treatment.
Each embodiment in this manual all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually see.
Above-described embodiment, only for technical conceive of the present utility model and feature are described, its object is to person skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalences done according to the utility model Spirit Essence change or modify, and all should be encompassed within protection domain of the present utility model.
Claims (6)
1. the oil pipe running and pulling device in pressure balance workover rig, it is characterized in that, it comprises:
Well fluid cylinder system, it comprises first cylinder barrel and second cylinder barrel mutually sheathed with described first cylinder barrel with an axis, and described second cylinder barrel can slide along relatively described first cylinder barrel of the axis direction of described first cylinder barrel;
First fixed mechanism, it comprises the first noumenon fixed with described first cylinder barrel, and described the first noumenon has the first passage be connected with the working chamber of described first cylinder barrel;
Loose body, its top being positioned at the second fixed mechanism also can be spacing to oil pipe;
Second fixed mechanism, it comprises the second body fixed with described second cylinder barrel;
Fixed body, its below being positioned at described first fixed mechanism also can be spacing to oil pipe;
Compensating cylinder, it comprises the compensating cylinder cylinder barrel be installed on described second body, be installed in the piston rod on described the first noumenon, described piston rod wears and is fixed in described compensating cylinder cylinder barrel, described piston rod is connected with compensating cylinder piston, described compensating cylinder piston, described piston rod and described compensating cylinder cylinder barrel form the working chamber of compensating cylinder, described compensating cylinder piston can slide along the axis direction of described first cylinder barrel relative to described compensating cylinder cylinder barrel, described piston rod inner has second channel, described second channel is connected with the working chamber of described first passage and described compensating cylinder.
2. the oil pipe running and pulling device in pressure balance workover rig according to claim 1, it is characterized in that, described compensating cylinder is one-way cylinder, and the chamber in described compensating cylinder with described piston rod is working chamber, and the chamber without described piston rod is connected with air.
3. the oil pipe running and pulling device in pressure balance workover rig according to claim 1, it is characterized in that, described compensating cylinder is two, and it is symmetricly set on the first noumenon and the second body, and the sectional area sum of the working chamber of described compensating cylinder equals the sectional area of the working chamber of described second cylinder barrel.
4. the oil pipe running and pulling device in pressure balance workover rig according to claim 1, it is characterized in that, described piston rod offers the first through hole at the end of the closure with described compensating cylinder piston, described first through hole is connected with the working chamber of described second channel, described compensating cylinder, and described underpart of the piston rod offers the second through hole being communicated with described second channel and described first passage.
5. the oil pipe running and pulling device in pressure balance workover rig according to claim 1, is characterized in that, described compensating cylinder cylinder barrel side wall ring is to the centralizer filler ring be provided with for playing centralizing function.
6. the oil pipe running and pulling device in pressure balance workover rig according to claim 1, is characterized in that, described loose body comprises traveling slip, rotating disk, moves about and partly seal blowout preventer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420797082.2U CN204457499U (en) | 2014-12-15 | 2014-12-15 | Oil pipe running and pulling device in pressure balance workover rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420797082.2U CN204457499U (en) | 2014-12-15 | 2014-12-15 | Oil pipe running and pulling device in pressure balance workover rig |
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| Publication Number | Publication Date |
|---|---|
| CN204457499U true CN204457499U (en) | 2015-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420797082.2U Expired - Fee Related CN204457499U (en) | 2014-12-15 | 2014-12-15 | Oil pipe running and pulling device in pressure balance workover rig |
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| CN (1) | CN204457499U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209257A (en) * | 2018-09-14 | 2019-01-15 | 高继宗 | A kind of full well section construction operation device with pressure and the construction technology using the device |
| CN109267989A (en) * | 2018-09-20 | 2019-01-25 | 杨严 | A kind of underground work method for preventing misoperation |
| CN113250627A (en) * | 2021-06-29 | 2021-08-13 | 四川圣诺油气工程技术服务有限公司 | Oil pipe centering device for operation under pressure |
-
2014
- 2014-12-15 CN CN201420797082.2U patent/CN204457499U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209257A (en) * | 2018-09-14 | 2019-01-15 | 高继宗 | A kind of full well section construction operation device with pressure and the construction technology using the device |
| CN109209257B (en) * | 2018-09-14 | 2024-03-01 | 高继宗 | Full-well section pressurized construction operation device and construction process adopting same |
| CN109267989A (en) * | 2018-09-20 | 2019-01-25 | 杨严 | A kind of underground work method for preventing misoperation |
| CN113250627A (en) * | 2021-06-29 | 2021-08-13 | 四川圣诺油气工程技术服务有限公司 | Oil pipe centering device for operation under pressure |
| CN113250627B (en) * | 2021-06-29 | 2021-09-10 | 四川圣诺油气工程技术服务有限公司 | Oil pipe centering device for operation under pressure |
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