CN109654002A - A kind of plunger and oil and gas well structure - Google Patents
A kind of plunger and oil and gas well structure Download PDFInfo
- Publication number
- CN109654002A CN109654002A CN201910145476.7A CN201910145476A CN109654002A CN 109654002 A CN109654002 A CN 109654002A CN 201910145476 A CN201910145476 A CN 201910145476A CN 109654002 A CN109654002 A CN 109654002A
- Authority
- CN
- China
- Prior art keywords
- plunger
- hoistway
- core pipe
- righting strip
- piece
- 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.)
- Pending
Links
- 238000012856 packing Methods 0.000 claims description 37
- 238000004146 energy storage Methods 0.000 claims description 14
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 239000007789 gas Substances 0.000 abstract description 32
- 230000009471 action Effects 0.000 abstract description 15
- 230000007246 mechanism Effects 0.000 abstract description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 4
- 238000000605 extraction Methods 0.000 abstract description 2
- 239000003345 natural gas Substances 0.000 abstract description 2
- 239000003208 petroleum Substances 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 16
- 238000010586 diagram Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 4
- 239000002343 natural gas well Substances 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 241000521257 Hydrops Species 0.000 description 2
- 206010030113 Oedema Diseases 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- BVPWJMCABCPUQY-UHFFFAOYSA-N 4-amino-5-chloro-2-methoxy-N-[1-(phenylmethyl)-4-piperidinyl]benzamide Chemical compound COC1=CC(N)=C(Cl)C=C1C(=O)NC1CCN(CC=2C=CC=CC=2)CC1 BVPWJMCABCPUQY-UHFFFAOYSA-N 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
- F04B47/12—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps having free plunger lifting the fluid to the surface
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1014—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/02—Packing the free space between cylinders and pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Types And Forms Of Lifts (AREA)
Abstract
The present invention relates to natural gas and technical field of petroleum extraction, a kind of plunger and oil and gas well structure are disclosed.At work, under the action of righting strip, plunger is able to maintain in the position with hoistway almost coaxial for oil and gas well structure and plunger provided in an embodiment of the present invention.The problem of in this way when plunger downlink in hoistway, plunger and hoistway relative position in the radial direction are basically unchanged, and so avoid plunger and hoistway generation sharp impacts, greatly reduces a possibility that movement mechanism is by false triggering in plunger.When plunger comes downwards to lower curved section or horizontal segment, under the support of righting strip, plunger is still able to maintain that the position for being hoistway almost coaxial.In this way, being gathered in the foreign matter of hoistway radial direction bottom can pass through from by interval, the contact area of plunger end and foreign matter is greatly reduced, the friction in down stroke of plunger is reduced, improves the downstream rate of plunger.
Description
Technical field
The present invention relates to natural gas and technical field of petroleum extraction more particularly to a kind of plungers and oil and gas well structure.
Background technique
In oil/gas well production process, plunger is a kind of device of more common lifting shaft bottom liquid.Plunger has envelope
Partition, packing piece be close to form sealing with hoistway inner wall under the action of the elastic member, thus by above plunger space and plunger
The space of lower section separates.Under the state of driving a well, plunger can under the action of two-way pressure difference uplink, and will be above plunger
Liquid is lifted to well head.Packing piece is close to hoistway inner wall always under the action of the elastic member, therefore to make plunger downlink, needs
Closing well allows plunger being capable of downlink under gravity with the two-way pressure of balance plunger.
It can actively make to insulate the plunger that radially-inwardly shrinks of piece in the presence of one kind in the related art, when needing plunger downlink
When, shrink packing piece radially-inwardly.In this way, the outer diameter of plunger is less than the internal diameter of hoistway, so that being formed between plunger and hoistway
For the runner that fluid passes through, the resistance of plunger downlink is reduced.In this way, plunger can downlink at faster speed, or even can
Downlink in the state of responding curve of well.
Summary of the invention
The purpose of the present invention is to provide a kind of plungers, can be protected after packing piece is radially-inwardly shunk by righting strip
The almost coaxial with hoistway is held, and can be avoided plunger and violent collision occurs with hoistway, and can reduce plunger in oil gas
The horizontal segment of well or the friction in down stroke of lower curved section.
It is another object of the present invention to provide a kind of oil and gas well structures including above-mentioned plunger.
The embodiment of the present invention is achieved through the following technical solutions:
A kind of plunger, comprising: core pipe: surrounding core pipe arranged for interval, and be configured to radially reciprocate multiple helps
Positive item, formed between adjacent righting strip for object pass through by interval, the extending direction of righting strip and the extension side of core pipe
To identical；Righting strip is acted on, and is configured to the first dynamic clamping head and quiet clamping head of the trend for making righting strip have radial outward movement；
It is arranged around core pipe, and is configured to the multiple packing pieces radially reciprocated；Packing piece is acted on, and is configured to make to seal
Partition has the second dynamic clamping head and quiet clamping head of the trend moved radially outwards；And it is connect with packing piece, and be configured to optional
The drive of selecting property insulates piece radial inward movement to retracted position and is maintained at the executing agency of retracted position.
Further, plunger further includes the first guide part；First guide part can be radially movable run through core pipe, first guiding
One end that part is located at outside core pipe is connect with righting strip, one end that the first guide part is located in core pipe be provided be used for and core pipe against
The first limiting section.
Further, the surface of righting strip towards core pipe offers the first outer holding tank, and the outer peripheral surface of core pipe offers
Holding tank in one, the first dynamic clamping head and quiet clamping head be spring, the both ends of the first dynamic clamping head and quiet clamping head be separately positioned on the first outer holding tank with
First content is received in slot.
Further, radially outward direction, the length and width of righting strip is gradually reduced.
Further, radially the lateral surface of righting strip constitutes arc-shaped contact surface.
Further, the diameter of contact surface is less than the internal diameter of the hoistway of plunger work.
Further, the stop collar positioned at righting strip two sides is provided in core pipe；Stop collar is close to one end of righting strip
Outer diameter is less than the outer diameter of the one end of stop collar far from righting strip.
It further, include sequentially connected small outer diameter section, changeover portion and big outer diameter section along axial limiting ring；Small outer diameter section
Close to righting strip；Along the direction of small outer diameter section to big outer diameter section, the outer diameter of changeover portion is gradually increased.
Further, executing agency includes actuated piece and elastic energy storage device；Actuated piece is arranged in core pipe, and is constructed
To be moved back and forth between expanding position and retracted position along axial direction；Elastic energy storage device can be radially movable run through core pipe, and
One end is connect with packing piece, and the other end is connect with actuated piece；Elastic energy storage device is configured to apply edge from contraction to actuated piece
The elastic force in position to expanding position direction；Elastic energy storage device be configured to be compressed when actuated piece is located at retracted position or
It stretches, and drives packing piece radial inward movement.
Oil and gas well structure, comprising: hoistway；And any one of the above plunger；Wherein, plunger is configured to reciprocal along hoistway
Movement, righting strip are contacted with the inner wall of hoistway.
Technical solution of the present invention is at least had the following advantages and beneficial effects:
At work, under the action of righting strip, plunger can for oil and gas well structure and plunger provided in an embodiment of the present invention
It is maintained at the position with hoistway almost coaxial.In this way when plunger downlink in hoistway, plunger and hoistway are in the radial direction opposite
The problem of position is basically unchanged, and so avoids plunger and hoistway generation sharp impacts, greatly reduces movement in plunger
Mechanism (in the present embodiment, that is, greatly reduces a possibility that executing agency is by false triggering) by a possibility that false triggering.In addition,
Due to be formed between adjacent righting strip for object pass through by interval so that when plunger downlink, fluid still can be by
By being spaced the top from plunger flowing underneath to plunger, it is ensured that plunger being capable of fast downlink arrival shaft bottom.When plunger comes downwards to
When lower curved section or horizontal segment, under the support of righting strip, plunger is still able to maintain that the position for being hoistway almost coaxial.This
Sample, the foreign matter for being gathered in hoistway radial direction bottom can pass through from by interval, greatly reduce contact of the plunger end with foreign matter
Area reduces the friction in down stroke of plunger, improves the downstream rate of plunger.
Detailed description of the invention
For the clearer technical solution for illustrating the embodiment of the present invention, below to needing attached drawing to be used to make in embodiment
It is simple to introduce.It should be appreciated that the following drawings illustrates only certain embodiments of the invention, it is not construed as to model of the present invention
The limitation enclosed.To those skilled in the art, without creative efforts, it can obtain according to these attached drawings
Obtain other accompanying drawings.
Fig. 1 is in the related technology that plunger comes downwards to the axial configuration figure when horizontal segment or lower curved section of oil/gas well；
Fig. 2 is the structural schematic diagram of oil and gas well structure provided in an embodiment of the present invention；
Fig. 3 is the schematic diagram of the section structure of plunger provided in an embodiment of the present invention, and wherein actuated piece is located at expanding position；
Fig. 4 is the external structure schematic diagram of plunger provided in an embodiment of the present invention；
Fig. 5 is in oil and gas well structure provided in an embodiment of the present invention, along axial work shape when righting strip is resisted against hoistway
State figure；
Fig. 6 is the schematic perspective view of righting strip in oil and gas well structure provided in an embodiment of the present invention；
Fig. 7 is enlarged drawing at the A of Fig. 3；
Fig. 8 is enlarged drawing at the B of Fig. 3；
Fig. 9 is the schematic diagram of the section structure of plunger provided in an embodiment of the present invention, and wherein actuated piece is located at retracted position；
Figure 10 is enlarged drawing at the C of Fig. 9.
In figure: 01a- plunger；11a- hoistway；12a- foreign matter；01- oil and gas well structure；010- plunger；11- hoistway；12- is different
Object；110- core pipe；The upper end 110a-；The lower end 110b-；111a- stop collar；111b- stop collar；111c- stop collar；112- first
Through hole；113- first content receives slot；The second through hole of 114-；Holding tank in 115- second；116- working hole；117- positioning
Column；118- retaining spring；120- righting strip；120a- passes through interval；The first threaded hole of 121-；The outer holding tank of 122- first；123-
Inclined-plane；124- contact surface；The first dynamic clamping head and quiet clamping head of 130-；140- insulates piece；The second threaded hole of 141-；It is accommodated outside 142- second
Slot；The second dynamic clamping head and quiet clamping head of 150-；The first guide part of 210-；The first limiting section of 211-；The second guide part of 220-；221- second is limited
Position portion；300- executing agency；310- actuated piece；The upper end 310a-；The lower end 310b-；311- actuation slot；The first locating slot of 312-；
The second locating slot of 313-；320- elastic energy storage device；321- interlocking bar；322- elastic portion；The first extension of 322a-；322b-
Two extensions；The curved spring of 322c-.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing, to the present invention
Technical solution in embodiment carries out clear, complete description.Obviously, described embodiment is that a part of the invention is implemented
Example, instead of all the embodiments.
Therefore, the model of claimed invention is not intended to limit to the detailed description of the embodiment of the present invention below
It encloses, but is merely representative of section Example of the invention.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.
It should be noted that in the absence of conflict, the feature and technology in embodiment and embodiment in the present invention
Scheme can be combined with each other.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that the orientation or positional relationship of the instructions such as term " on ", "lower" is base
In orientation or positional relationship shown in the drawings or the invention product using when the orientation or positional relationship usually put, or
Person is the orientation or positional relationship that those skilled in the art usually understand, this kind of term is merely for convenience of the description present invention and letter
Change description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation construct and
Operation, therefore be not considered as limiting the invention.
In description of the invention, " oil/gas well " can refer to oil well, can also refer to the natural gas well.When " oil/gas well " is natural
When gas well, the natural gas well for acquiring conventional gas can be, be also possible to for acquiring Unconventional gas (shale
Gas, coal bed gas etc.) the natural gas well.
Inventor has found that can actively make to insulate in the related technology the plunger that radially-inwardly shrinks of piece exist with
Lower problem:
Since the outer diameter of plunger this in downlink is less than the internal diameter of hoistway, cause to occur between plunger and hoistway more acute
Strong collision, the movement mechanism that these collisions are likely to result in plunger influence the normal work of oil/gas well by false triggering.Separately
Outside, in the horizontal segment of oil/gas well or lower curved section, the radial bottom of hoistway can stockpile a large amount of foreign matters (such as: paraffin, gravel or metal
Clast etc.).When plunger reaches horizontal ends or lower curved section, plunger is supported by the radial bottom of hoistway, and the axis of plunger is located at well
Below the axis in road, there are biggish contacts area between this foreign matter for causing plunger and hoistway radial direction bottom to stockpile, to plunger
Downlink cause biggish obstruction.Fig. 1 is in the related technology, when plunger 01a comes downwards to the horizontal segment or lower curved section of oil/gas well
State diagram.As shown, the radial bottom of hoistway 11a has stockpiled foreign matter 12a.Under gravity, plunger 01a is by hoistway
The radial bottom of 11a supports.Since the outer diameter of plunger 01a is less than the internal diameter of hoistway 11a, so that the axis of plunger 01a is located at well
The lower section of the axis of road 11a.So, it will lead between the end of plunger 01a and foreign matter 12a that there are biggish contact surfaces
Product, this will cause to hinder to the downlink of plunger 01a.
In order to overcome the above problem, the following examples will provide a kind of plunger 010 and oil and gas well structure 01.
Embodiment:
Fig. 2 is the structural schematic diagram of oil and gas well structure 01 provided in this embodiment.Oil and gas well structure provided in this embodiment
01 includes the hoistway 11 that ground end is extended to by ground.After hoistway 11 is extended a distance into vertically downward by ground, it is tilted towards downward
A distance (lower curved section) is stretched, final level extends a distance into (horizontal segment).It should be pointed out that for ease of description,
The extension form of hoistway 11 is only schematically illustrated in figure, and the specific structure of hoistway 11 is omitted.It is provided in this embodiment
Oil and gas well structure 01 further includes plunger 010.For moving along hoistway 11, the hydrops that shaft bottom is assembled is lifted to plunger 010
Outside oil/gas well.
Fig. 3 is the schematic diagram of the section structure of plunger 010 provided in this embodiment.Referring to figure 3., in the present embodiment, column
Plug 010 includes core pipe 110, righting strip 120, the first dynamic clamping head and quiet clamping head 130, packing piece 140, the second dynamic clamping head and quiet clamping head 150 and holds
Row mechanism 300.
Core pipe 110 is round tubular component, and core pipe 110 has opposite upper end 110a and lower end 110b.In core pipe 110
Upper end 110a is provided with the stop collar 111a projected radially outward, and the limit projected radially outward is provided at the middle part of core pipe 110
Position ring 111b, the stop collar 111c projected radially outward is provided in the lower end 110b of core pipe 110.Stop collar 111a, stop collar
111b is identical with the maximum outside diameter of stop collar 111c.Fig. 4 is the external structure schematic diagram of plunger 010 provided in this embodiment.Please
Referring to Fig. 3 and Fig. 4, in the present embodiment, righting strip 120 is the elongated member axially extending along core pipe 110.Multiple righting strips
120 are arranged between stop collar 111b and stop collar 111c, and multiple righting strips 120 are equally spaced around core pipe 110.Phase
Exist always between adjacent righting strip 120 for object pass through by being spaced 120a.By interval 120a along the axial direction of core pipe 110
Extend.It is axially spaced on righting strip 120 to offer two the first threaded holes 121.It is offered in core pipe 110 and the first screw thread
One-to-one first through hole 112 in hole 121.First guide part 210 is cylindric.First guide part 210 can be radially movable
Through the first through hole 112.One end that first guide part 210 is located at outside core pipe 110 is provided with external screw thread, and with righting strip 120
On the first threaded hole 121 be threadedly coupled.It is that diameter passes through greater than first that first guide part 210, which is located at one end in core pipe 110,
First limiting section 211 of the internal diameter in hole 112.Righting strip 120 can radial outward movement until the first limiting section 211 be resisted against core
The inner wall of pipe 110, so that the first guide part 210 can not be detached from core pipe 110.
A first outer holding tank 122 is offered in the inner radial surface of righting strip 120.First outer holding tank 122
Between two the first threaded holes 121.It is offered in first opposite with the first outer holding tank 122 in the outer peripheral surface of core pipe 110
Holding tank 113.First dynamic clamping head and quiet clamping head 130 is arranged between righting strip 120 and core pipe 110.First dynamic clamping head and quiet clamping head, 130 one end
In the first outer holding tank 122, the other end is located at first content and receives in slot 113, so that 130 energy of the first dynamic clamping head and quiet clamping head
Enough by good positioning.First dynamic clamping head and quiet clamping head 130 is in compressed state always, so that righting strip 120 has diameter always
To the trend moved out.When plunger 010 works in hoistway 11, under the action of the first dynamic clamping head and quiet clamping head 130, righting strip
120 lateral surface is resisted against the inner peripheral surface of hoistway 11.When righting strip 120 is by radially inward extruding, righting strip 120 can
The elastic force radial inward movement for overcoming the first dynamic clamping head and quiet clamping head 130 enables righting strip 120 to contract by internal diameter in hoistway 11
Small position.First dynamic clamping head and quiet clamping head 130 is spring, in other embodiments, the first dynamic clamping head and quiet clamping head 130 or rubber
Rubber column gel column or other be capable of providing the device of elastic force.
Fig. 5 is in oil and gas well structure 01 provided in this embodiment, along axial work when righting strip 120 is resisted against hoistway 11
State diagram.Under the action of righting strip 120, plunger 010 is able to maintain in the position with 11 almost coaxial of hoistway.Work as plunger in this way
010 in hoistway 11 when downlink, and plunger 010 and the relative position in the radial direction of hoistway 11 are basically unchanged, and so avoids
The problem of sharp impacts occur for plunger 010 and hoistway 11, greatly reduces a possibility that movement mechanism is by false triggering in plunger 010
(in the present embodiment, that is, greatly reducing a possibility that executing agency 300 is by false triggering).In addition, due to adjacent righting strip
Be formed between 120 for object pass through by being spaced 120a so that when 010 downlink of plunger, between fluid still can be by passing through
Every 120a from 010 flowing underneath of plunger to the top of plunger 010, it is ensured that plunger 010 being capable of fast downlink arrival shaft bottom.Work as plunger
010 when coming downwards to lower curved section or horizontal segment, and under the support of righting strip 120, plunger 010, which is still able to maintain that, is 11 base of hoistway
This coaxial position.In this way, being gathered in the foreign matter 12 of the radial bottom of hoistway 11 can pass through from by being spaced 120a, substantially reduce
The contact area of plunger 010 end and foreign matter 12, reduces the friction in down stroke of plunger 010, improves the lower scanning frequency of plunger 010
Degree.
Fig. 6 is the schematic perspective view of righting strip 120 in oil and gas well structure 01 provided in this embodiment.Please refer to figure
6, in the present embodiment, radially outward direction, the length and width of righting strip 120 is all gradually reduced.Radially
The width in direction, righting strip 120 is gradually reduced, so that being increased by the volume for being spaced 120a, reduces 010 downlink of plunger
When resistance.Radially outward direction, the length of righting strip 120 is gradually reduced, so that two on 120 length direction of righting strip
End forms the inclined-plane 123 for contacting with fluid, this inclined-plane 123 can help divided fluid stream to the two sides of righting strip 120
And enter through in the 120a of interval, it can reduce fluid resistance when 010 downlink of plunger in this way, improve the lower scanning frequency of plunger 010
Degree.
Please continue to refer to Fig. 6, in the present embodiment, radially the lateral surface of righting strip 120 constitutes arc-shaped contact surface
124.Radial outward movement under the action of the first dynamic clamping head and quiet clamping head 130 of righting strip 120, so that contact surface 124 and hoistway 11
Inner peripheral surface against.Since contact surface 124 is arc, and the diameter of contact surface 124 is less than the internal diameter of hoistway 11, so that contact surface
Line contacts between 124 and hoistway 11, reduces the frictional force between righting strip 120 and hoistway 11, facilitates plunger 010 in hoistway
Fast downlink in 11.
In the present embodiment, along axial direction, the outer diameter of stop collar 111b and stop collar 111c are variations.Specifically, limit
Ring 111b is less than the outer diameter of the one end of stop collar 111b far from righting strip 120 close to the outer diameter of one end of righting strip 120.In this way,
Help to reduce fluid and flow into and out resistance by being spaced 120a, and then reduces the resistance that moves in hoistway 11 of plunger 010
Power, further such that plunger 010 can in hoistway 11 fast downlink.It further, include successively along axial limiting ring 111b
Small outer diameter section, changeover portion and the big outer diameter section of connection；Small outer diameter section is close to righting strip 120；Along small outer diameter section to big outer diameter section
The outer diameter in direction, changeover portion is gradually increased.It include sequentially connected small outer diameter section, changeover portion and big outer along axial limiting ring 111c
Diameter section；Small outer diameter section is close to righting strip 120；Along the direction of small outer diameter section to big outer diameter section, the outer diameter of changeover portion is gradually increased.On
It states in the stop collar 111b and stop collar 111c of result, changeover portion can radially outward guide fluid, to further decrease column
Fluid resistance when plug 010 moves in hoistway 11, facilitates fast downlink of the plunger 010 in hoistway 11.
Multiple packing pieces 140 are arranged between stop collar 111a and stop collar 111b, and multiple packing pieces 140 surround core
Pipe 110 is arranged.It is axially spaced on packing piece 140 to offer two the second threaded holes 141.It is offered in core pipe 110 and the
One-to-one second through hole 114 of two threaded hole 141.Second guide part 220 is cylindric.Second guide part 220 is can
Radially movable runs through the second through hole 114.Second guide part 220 is provided with external screw thread for one end outside core pipe 110, and
It is threadedly coupled with the second threaded hole 141 on packing piece 140.Second guide part 220 is that one end in core pipe 110 is diameter
Greater than the second limiting section 221 of the internal diameter of the second through hole 114.Insulate piece 140 can radial outward movement until second limit
Portion 221 is resisted against the inner wall of core pipe 110, so that the second guide part 220 is that can not be detached from core pipe 110.
Second outer holding tank 142 there are two being opened up in the inner radial surface of packing piece 140.Second outer holding tank 142
Between two the second threaded holes 141.It is offered in second opposite with the second outer holding tank 142 in the outer peripheral surface of core pipe 110
Holding tank 115.The setting of second dynamic clamping head and quiet clamping head 150 is between packing piece 140 and core pipe 110.Second dynamic clamping head and quiet clamping head, 150 one end
In the second outer holding tank 142, the other end is located in second in holding tank 115, so that 150 energy of the second dynamic clamping head and quiet clamping head
Enough by good positioning.Second dynamic clamping head and quiet clamping head 150 is in compressed state always, so that packing piece 140 has diameter always
To the trend moved out.When plunger 010 works in hoistway 11, under the action of the second dynamic clamping head and quiet clamping head 150, piece is insulated
140 lateral surface is resisted against the inner peripheral surface of hoistway 11, sealing is formed in the circumferential, thus in 010 uplink of plunger by plunger 010
The fluid of top lifts upwards.When insulating piece 140 by radially inward extruding, packing piece 140 can overcome the second elasticity
The elastic force radial inward movement of return unit 150, the position that packing piece 140 is reduced by internal diameter in hoistway 11.The
Two dynamic clamping head and quiet clamping heads 150 are spring, in other embodiments, the second dynamic clamping head and quiet clamping head 150 or rubber column or other
It is capable of providing the device of elastic force.
In the present embodiment, executing agency 300 connect with packing piece 140, and executing agency 300 is configured to optionally
Drive packing 140 radial inward movement of piece.Specifically, executing agency 300 is not to envelope when the uplink in hoistway 11 of plunger 010
The movement of partition 140, which is constituted, to be influenced.At this point, packing piece 140 can be resisted against hoistway under the action of the second dynamic clamping head and quiet clamping head 150
11 inner peripheral surface forms sealing, to lift the fluid above plunger 010 upwards in 010 uplink of plunger in the circumferential.When
For plunger 010 in hoistway 11 when downlink, executing agency 300 drives packing 140 radial inward movement of piece, so that packing piece 140 is de-
Inner surface from hoistway 11 forms the space passed through for fluid, to substantially reduce plunger between plunger 010 and hoistway 11
Fluid resistance when 010 downlink, enable 010 fast downlink of plunger even in the case where not shutting down downlink.
Executing agency 300 can take various forms realization, such as executing agency 300 can pass through motor or electromagnet machine
Structure is realized.In the present embodiment, executing agency 300 includes actuated piece 310 and elastic energy storage device 320.The setting of actuated piece 310 exists
In core pipe 110, and it is configured to move back and forth between expanding position and retracted position along the axial of core pipe 110.Elastic energy storage
Device 320 can be radially movable run through core pipe 110, and one end with insulate piece 140 connect, the other end is connect with actuated piece 310；Bullet
Property energy storage device 320 be configured to apply along elastic force from retracted position to expanding position direction actuated piece 310；Elasticity storage
Can device 320 be configured to compress or stretched when actuated piece 310 is located at retracted position, and drive insulate piece 140 radially to
Interior movement.Actuated piece 310 and elastic energy storage device 320 are further described below.
In the present embodiment, actuated piece 310 is rod-like members.Actuated piece 310 includes upper end 310a and lower end 310b.Actuating
The axial ends that axially penetrates through core pipe 110 of the part 310 along core pipe 110.Actuated piece 310 can along core pipe 110 axially with respect to
Core pipe 110 moves back and forth between expanding position and retracted position.When actuated piece 310 is located at expanding position, actuated piece 310
Upper end 310a is protruding to outside core pipe 110.When actuated piece 310 is located at retracted position, the lower end 310b of actuated piece 310 protrudes from core
Outside pipe 110.When plunger 010 moves to the bottom of hoistway 11, the lower end 310b of actuated piece 310 and 11 bottom of hoistway is set
Impact portions collide, so that actuated piece 310 moves to expanding position.When plunger 010 moves to the top of hoistway 11, actuating
The upper end 310a of part 310 and the impact portions at 11 top of hoistway collide, so that actuated piece 310 moves to retracted position.It is causing
The outer peripheral surface of moving part 310 offers actuation slot 311.
Fig. 7 is enlarged drawing at the A of Fig. 3, please refers to Fig. 7.The first locating slot is offered on the upper end 310a of actuated piece 310
312 and second locating slot 313.Along upper end 310a to the direction of lower end 310b, the first locating slot 312 and the second locating slot 313 according to
Secondary arrangement.The working hole 116 radially extended is offered on the upper end 110a of core pipe 110, is slidably set in working hole 116
It is equipped with positioning column 117.Retaining spring 118 is additionally provided in working hole 116.Retaining spring 118 is in compressed shape always
State, and positioning column 117 is acted on, so that positioning column 117 is had the trend of radial inward movement always.When actuated piece 310 moves to
When retracted position, positioning column 117 is inserted into the first locating slot 312, so that actuated piece 310 maintains retracted position.When actuated piece 310
When moving to expanding position, positioning column 117 is inserted into the second locating slot 313, so that actuated piece 310 maintains expanding position.
Fig. 8 is enlarged drawing at the B of Fig. 3, please refers to Fig. 8.Elastic energy storage device 320 includes interlocking bar 321 and elastic portion
322.Interlocking bar 321 can radial motion run through core pipe 110.One end of interlocking bar 321 is located in core pipe 110, interlocking bar 321
The other end is fixedly connected with packing piece 140.Elastic portion 322 includes the first extension 322a, the second extension 322b and curved bullet
Spring 322c.Curved spring 322c is formed by metal strip around an axis spiral extension.Prolong respectively at the both ends of curved spring 322c
It stretches to form straight the first extension 322a and the second extension 322b.Wherein, the first extension 322a and the second extension
322b is vertical.The mobilizable insertion interlocking bar 321 of first extension 322a is located in the hole that one end in core pipe 110 opens up, with
The mobilizable connection of interlocking bar 321.In the mobilizable insertion actuation slot 311 of second extension 322b.The week of curved spring 322c
The inner peripheral surface of face and core pipe 110 against.In Fig. 3 and Fig. 8, actuated piece 310 is located at expanding position.At this point, the second extension
322b does not stress.Under the action of the second dynamic clamping head and quiet clamping head 150,140 radial outward movement of piece is insulated, drives 321 diameter of interlocking bar
To moving out, elastic portion 322 is rotated with the movement of interlocking bar 321.As can be seen that when actuated piece 310 is located at expanding position
When, packing piece 140 can under the action of the second dynamic clamping head and quiet clamping head 150 radial outward movement, to be close to the inner wall shape of hoistway 11
At sealing.When plunger 010 moves to the position that internal diameter becomes smaller in hoistway 11, packing piece 140 can overcome the second elastic reset
The elastic force radial outward movement of part 150, so that the position that plunger 010 can be become smaller by internal diameter in hoistway 11.In plunger 010
When moving to the bottom of hoistway 11, the lower end 310b of actuated piece 310 collides with the impact portions that 11 bottom of hoistway is arranged in, and makes
It obtains actuated piece 310 and moves to expanding position.With this, plunger 010 uplink and can be lifted upwards the hydrops being positioned above.
Fig. 9 is the schematic diagram of the section structure of plunger 010 provided in this embodiment, and wherein actuated piece 310 is located at retracted position.
Figure 10 is enlarged drawing at the C of Fig. 9.Incorporated by reference to referring to Fig. 9 and Figure 10.When plunger 010 moves to the top of hoistway 11, actuated piece
310 lower end 310b collides with the impact portions that 11 top of hoistway is arranged in, so that actuated piece 310 moves to expanding position.
During actuated piece 310 moves to retracted position from position of collision, actuated piece 310 presses to the second extension 322b, makes
It obtains curved spring 322c and elastic deformation occurs.Curved spring 322c is further driven to the first extension 322a and radially-inwardly deflects,
To drive packing 140 radial inward movement of piece by interlocking bar 321.At this point, packing piece 140 is separated with the inner wall of hoistway 11,
Frictional force when eliminating 010 downlink of plunger between packing piece 140 and the inner wall of hoistway 11, while insulating piece 140 and hoistway 11
Inner wall between form the runner passed through for fluid, fluid resistance when 010 downlink of plunger of shaft bottom finally makes plunger
010 can fast downlink, or even can in the case where not shutting down downlink.In addition, since bullet can occur for curved spring 322c
Property deformation, when insulate between piece 140 and core pipe 110 there are sundries cause to insulate piece 140 can not radial inward movement when, actuated piece
310 also can smoothly execute predetermined action (moving to retracted position from expanding position), so that actuated piece 310 be avoided to be unable to complete
Damage of components caused by predetermined action.
Oil and gas well structure 01 and plunger 010 provided in this embodiment at work, under the action of righting strip 120, plunger
010 is able to maintain in the position with 11 almost coaxial of hoistway.In this way when the downlink in hoistway 11 of plunger 010, plunger 010 and well
The relative position in the radial direction of road 11 is basically unchanged, and so avoids plunger 010 with hoistway 11 and asking for sharp impacts occurs
Topic greatly reduces in plunger 010 movement mechanism by a possibility that false triggering and (in the present embodiment, that is, greatly reduces execution
A possibility that mechanism 300 is by false triggering).In addition, due to be formed between adjacent righting strip 120 for object pass through pass through between
Every 120a, so that fluid still can be by by being spaced 120a from 010 flowing underneath of plunger to plunger 010 when 010 downlink of plunger
Top, it is ensured that plunger 010 can fast downlink reach shaft bottom.When plunger 010 comes downwards to lower curved section or horizontal segment, in righting
Under the support of item 120, plunger 010 is still able to maintain that the position for being 11 almost coaxial of hoistway.In this way, being gathered in 11 diameter of hoistway
It can pass through to the foreign matter 12 of bottom from by being spaced 120a, greatly reduce the contact area of plunger 010 end and foreign matter 12,
The friction in down stroke for reducing plunger 010 improves the downstream rate of plunger 010.
The foregoing is merely section Examples of the invention, are not intended to restrict the invention, for art technology
For personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of plunger characterized by comprising
Core pipe:
Around the core pipe arranged for interval, and the multiple righting strips radially reciprocated are configured to, the adjacent righting
Formed between item for object pass through by interval, the extending direction of the righting strip is identical as the extending direction of the core pipe；
The righting strip is acted on, and the first elasticity for being configured to the trend for making the righting strip have radial outward movement is multiple
Position part；
It is arranged around the core pipe, and is configured to the multiple packing pieces radially reciprocated；
The packing piece is acted on, and is configured to the second elasticity for making the packing piece have the trend moved radially outwards
Return unit；And
It is connect with the packing piece, and is configured to optionally drive the packing piece radial inward movement to retracted position
And it is maintained at the executing agency of the retracted position.
2. plunger according to claim 1, it is characterised in that:
The plunger further includes the first guide part；First guide part can be radially movable run through the core pipe, described first
One end that guide part is located at outside the core pipe is connect with the righting strip, and first guide part is located at one end in the core pipe
Be provided with for the core pipe against the first limiting section.
3. plunger according to claim 1, it is characterised in that:
The surface of the righting strip towards the core pipe offers the first outer holding tank, and the outer peripheral surface of the core pipe offers first
Interior holding tank, first dynamic clamping head and quiet clamping head are spring, and the both ends of first dynamic clamping head and quiet clamping head are separately positioned on described first
Outer holding tank and the first content are received in slot.
4. plunger according to claim 1, it is characterised in that:
Radially outward direction, the length and width of the righting strip is gradually reduced.
5. plunger according to claim 4, it is characterised in that:
The lateral surface of the radially described righting strip constitutes arc-shaped contact surface.
6. plunger according to claim 5, it is characterised in that:
The diameter of the contact surface is less than the internal diameter of the hoistway of plunger work.
7. plunger according to claim 1, it is characterised in that:
The stop collar positioned at the righting strip two sides is provided in the core pipe；
Outer diameter of the stop collar close to one end of the righting strip is less than the one end of the stop collar far from the righting strip
Outer diameter.
8. plunger according to claim 7, it is characterised in that:
It include sequentially connected small outer diameter section, changeover portion and big outer diameter section along the axial stop collar；The small outer diameter section is close
The righting strip；Along the small outer diameter section to the direction of the big outer diameter section, the outer diameter of the changeover portion is gradually increased.
9. plunger according to claim 1, it is characterised in that:
The executing agency includes actuated piece and elastic energy storage device；
The actuated piece is arranged in the core pipe, and is configured to back and forth transport between expanding position and retracted position along axial direction
It is dynamic；
The elastic energy storage device can be radially movable run through the core pipe, and one end is connect with the packing piece, the other end and
The actuated piece connection；The elastic energy storage device is configured to apply along from the retracted position to described the actuated piece
The elastic force in expanding position direction；
The elastic energy storage device is configured to be compressed or stretched when the actuated piece is located at the retracted position, and drives
The packing piece radial inward movement.
10. oil and gas well structure characterized by comprising
Hoistway；And
Plunger described in any one of claim 1-9；
Wherein, the plunger is configured to move back and forth along the hoistway, and the righting strip is contacted with the inner wall of the hoistway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910145476.7A CN109654002A (en) | 2019-02-27 | 2019-02-27 | A kind of plunger and oil and gas well structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910145476.7A CN109654002A (en) | 2019-02-27 | 2019-02-27 | A kind of plunger and oil and gas well structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109654002A true CN109654002A (en) | 2019-04-19 |
Family
ID=66123769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910145476.7A Pending CN109654002A (en) | 2019-02-27 | 2019-02-27 | A kind of plunger and oil and gas well structure |
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| Country | Link |
|---|---|
| CN (1) | CN109654002A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5427504A (en) * | 1993-12-13 | 1995-06-27 | Dinning; Robert W. | Gas operated plunger for lifting well fluids |
| US6554580B1 (en) * | 2001-08-03 | 2003-04-29 | Paal, L.L.C. | Plunger for well casings and other tubulars |
| CN107313738A (en) * | 2017-09-06 | 2017-11-03 | 刘书豪 | The production method of fluid separation apparatus, hoistway structure and oil or natural gas |
| CN207568511U (en) * | 2017-11-14 | 2018-07-03 | 中国石油集团渤海钻探工程有限公司 | A kind of radial variable casing tube centralizer |
| CN207660558U (en) * | 2017-11-30 | 2018-07-27 | 湖北天圜工程有限公司 | A kind of reducing centralizer |
| CN209510606U (en) * | 2019-02-27 | 2019-10-18 | 成都百胜野牛科技有限公司 | A kind of plunger and oil and gas well structure |
-
2019
- 2019-02-27 CN CN201910145476.7A patent/CN109654002A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5427504A (en) * | 1993-12-13 | 1995-06-27 | Dinning; Robert W. | Gas operated plunger for lifting well fluids |
| US6554580B1 (en) * | 2001-08-03 | 2003-04-29 | Paal, L.L.C. | Plunger for well casings and other tubulars |
| CN107313738A (en) * | 2017-09-06 | 2017-11-03 | 刘书豪 | The production method of fluid separation apparatus, hoistway structure and oil or natural gas |
| CN207568511U (en) * | 2017-11-14 | 2018-07-03 | 中国石油集团渤海钻探工程有限公司 | A kind of radial variable casing tube centralizer |
| CN207660558U (en) * | 2017-11-30 | 2018-07-27 | 湖北天圜工程有限公司 | A kind of reducing centralizer |
| CN209510606U (en) * | 2019-02-27 | 2019-10-18 | 成都百胜野牛科技有限公司 | A kind of plunger and oil and gas well structure |
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