CN206419000U - One kind can realize gas well responding curve of well quantity-produced plunger gas producing device - Google Patents
One kind can realize gas well responding curve of well quantity-produced plunger gas producing device Download PDFInfo
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- CN206419000U CN206419000U CN201621348261.3U CN201621348261U CN206419000U CN 206419000 U CN206419000 U CN 206419000U CN 201621348261 U CN201621348261 U CN 201621348261U CN 206419000 U CN206419000 U CN 206419000U
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- spring
- cock body
- piston
- steel ball
- plunger
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Abstract
One kind can realize gas well responding curve of well quantity-produced plunger gas producing device.Main purpose is to provide a kind of function admirable, structure reliable Novel plunger gas producing device, so as to realize the continuous production of gas well, improves drainage efficiency.It is characterized in that：The device includes push rod, preventer, heterotypic spring and its gum cover, built-up piston, piston ball, piston ball fixture, cushion pad and its maintains several parts such as steel ring and buffer spring；Built-up piston is divided into upper piston body and lower piston body two parts, whole piston structure is collectively constituted with a spheroid, upper piston is connected with steel ball fixture and has supporting heterotypic spring and tube-in-tube structure to be attached thereto, cushion pad is placed with below oil pipe and its steel ring is maintained, and is fixed between rectangular structure a buffer spring；The maximum height run in piston by being fixedly connected with push rod, the total length of push rod is about 1.5 times of Split assembled piston total length, promotes spheroid descending in the case of responding curve of well to realize.
Description
Technical field：
It is applied to realize that oil gas responding curve of well is continuously given birth in oil-gas field development field the utility model relates to one kind
The split type plunger gas producing device of production.
Background technology：
During gas well liquid loading can output some liquid, when the flow velocity of gas in pit shaft, which is more than, takes liquid critical flow velocity, liquid with
The form of drop is carried to ground by gas.When gas flow rate is relatively low, it is impossible to which providing enough energy makes the fluid stream in pit shaft
When going out well head, liquid will flow in opposite direction with gas and lodge in shaft bottom, can finally cause shaft bottom hydrops.With hydrops plus
Play, the gas producting rate of gas reservoir declines, and well yield is successively decreased rapidly, gas well blowing reduced capability, in addition the serious hydrops in shaft bottom and stop
Production, increases exploitation difficulty, and the effective means for solving hydrops gas well is water pumping gas production.
Plunger lift be it is a kind of using reservoir energy come the mode of the water pumping gas production of carrying of liquids, be to regard plunger as sealing
Interface prevents gas channelling in pit shaft and liquid from falling after rise, thus improves the lifting efficiency of gas.But conventional plunger gas
Lifting technique has a larger defect：It is mainly reflected in that production is discontinuous, whereabouts resistance is big, the work period is longer and lifting efficiency
In terms of decline.Down-hole pressure is relied in the course of work of plunger, when driving a well to rise, and certain pressure is formed above and below piston
The gas and liquid of difference, lifting piston and the above, realize draining gas production purpose simultaneously.When closing well, piston upper and lower surface pressure reaches
To balance, shaft bottom is fallen on by self gravitation effect.Simultaneously plunger fall after rise during, when being fallen due to area of passage small plunger by
Resistance it is larger, the closed-in time is long, declines lifting efficiency.And because technical process needs to switch well so that ground is controlled
Mechanism is complicated, causes production process discontinuous.Therefore, in the urgent need to designing the reliable Novel pole of a kind of function admirable, structure
Plug, it is possible to achieve the continuous production of gas well, improves drainage efficiency.
The content of the invention：
In order to solve the technical problem being previously mentioned in background technology, the utility model, which provides one kind, can realize that gas well is not related to
Well quantity-produced plunger gas producing device, this kind of plunger gas producing device can realize that gas well responding curve of well is continuously produced, and structure
Simply, it is ingenious in design, it is easy to dismounting and installation, shaft bottom hydrops can be effectively excluded, the output efficiency of oil gas is improved.
The technical solution of the utility model is：This kind can realize gas well responding curve of well quantity-produced plunger gas producing device,
Including oil pipe, sleeve pipe and preventer and device of settling down, sleeve pipe is located in oil pipe, and annular gap is left between the two, in oil pipe and
The upper end connection preventer of sleeve pipe, device of settling down is located at the bottom of sleeve pipe, and it is unique in that：
The plunger gas producing device also include be located at sleeve pipe in push rod, the upper prop cock body with upper prop cock body hollow shaft,
Deformed spring fixing device, deformed spring, heterotypic spring gum cover, steel ball, bead strap, clamping plate support spring, clamping plate are solid
Fixed circle and the supporting bolt of retainer plate, steel ball, bead strap, clamping plate support spring, Boards wall circle, the supporting spiral shell of retainer plate
Bolt lower prop cock body, cushion rubber bumper, rubber cushion maintain steel ring and buffer spring.
Deformed spring fixing device, deformed spring, deformed spring gum cover, steel ball, bead strap, clamping plate support bullet
Spring, Boards wall circle and the supporting bolt of retainer plate；It is steel ball, bead strap, clamping plate support spring, Boards wall circle, solid
Surely enclose after supporting bolt is connected with each other and constitute an entirety, in the lower annular baffle plate of the upper prop cock body；Wherein, it is described
Bead strap is fixed by Boards wall circle and bolt, to realize automatic clamping and unclamp steel ball；The spring fixes dress
Put and be connected through a screw thread between upper prop cock body hollow shaft, the deformed spring is sleeved in the upper prop cock body hollow shaft, lead to
Cross that the deformed spring fixing device is spacing in hollow shaft, but can by a small margin be transported up and down along the axial direction of upper prop cock body hollow shaft
Dynamic, the deformed spring gum cover is sleeved on the outside of the deformed spring；The radius of steel ball is more than upper prop cock body hollow shaft.
The main body of described lower prop cock body is inverted hollow cylinder, and one is extended in the lower end of hollow cylinder
Hollow conical round table, all regions of ring of the conical round table are provided with four excessively stream holes, the bottom center of the conical round table
The one vertical central through hole run through is provided with, the diameter of the central through hole is slightly less than the diameter of steel ball；Upper prop cock body and lower prop
It is connected through a screw thread between cock body.
The top of the push rod by the supporting oil pipe being bolted at the well head outside, the diameter of the push rod is small
In the diameter of the upper prop cock body quill shaft, the length of the push rod is between 1.5 times to 2 times of the upper plug body length；
The top of the push rod is rounded tabs, and the surrounding of the rounded tabs is provided with flowing hole, and oil pipe is not exclusively covered to realize
Purpose；
The cushion rubber bumper, rubber cushion maintenance steel ring are placed sequentially in the bottom of the lower prop cock body, and the cushion rubber bumper is adopted
With quality of rubber materials, diameter is identical with tubing diameter；The buffer spring is fixed on the bottom of oil pipe, the top in device of settling down,
The spring uses spring steel material.
The utility model has the advantages that：The Combined plunger piston that the present apparatus is used, in up stage, combined live
When plug runs to oil pipe bottom, because the sealing function of cushion rubber bumper, the hole of periphery four of lower prop cock body is by cushion rubber bumper
Block, such lower prop cock body centre bore turns into unique flowing hole, now steel ball is on centre bore, and such air pressure is just concentrated
Act on steel ball, make steel ball smoothly up, and bead strap is touched during up, steel ball embraced automatically
Tightly, be so unlikely to it is up during ball separated with upper prop cock body hollow shaft, now area of passage is all sealed, above plunger
Liquid will not fall after rise.And in descending phase, after Combined plunger piston is up to maximum height, at this moment push rod works, promote
Steel ball is descending, hollow by plunger body, when steel ball is down moved, and makes piston ball and piston post separation, and the cross-sectional area of plunger subtracts
It is small, communicate up and down, the resistance that piston body is run into when descending can thus reduced, so as to so that plunger is in self gravitation
In the presence of freely it is descending, the automatic up-downgoing of piston can be thus realized under conditions of continuous responding curve of well, gas well is realized
Continuous production.The salvaging maintenance of plunger can also be completed using the present apparatus, i.e., one ten is devised on the basis of former push rod
The spring fishing head of word structure, when this fishing head is entered in plunger body by upper hollow shaft, bead can still be turned down, and now be pushed away
The spring of rod end head opens, and can be stuck at clamping plate, can carry out salvaging upkeep operation to plunger in real time.
In summary：This kind of apparatus structure is simple, ingenious in design, easy to removal and installation, by Combined plunger piston and pushing away
Bar is acted on, reduce plunger it is descending when resistance area area, reduce resistance during descent of piston, realize the premise in responding curve of well
Lower plunger can be smoothly descending, improves production efficiency, has great practical value.
Brief description of the drawings：
The structural blast view of Fig. 1 present apparatus
The corresponding assembling structure sectional view of explosive view of Fig. 2 present apparatus
Fig. 3 is the bead clasping structure installation diagram after label 10-14 part assembling
Fig. 4 is the bead clasping structure explosive view after label 10-14 part assembling
Fig. 5 is the structural representation after connecting fishing head latch plate in push rod lower end.
Fig. 6 is the structural representation for the push rod being bolted.
Fig. 7 is oil, sleeve pipe schematic diagram.
Fig. 8 is the cross section structure diagram of main plunger body portion.
Fig. 9 is the structural representation of upper prop cock body.
Figure 10 is the structural representation of heterotypic spring fixing device.
Figure 11 is the structural representation of heterotypic spring.
Figure 12 is the structural representation of heterotypic spring gum cover.
Figure 13 is the structural representation of steel ball.
Figure 14 is the structural representation of steel ball strap.
Figure 15 is the structural representation of Boards wall circle.
Figure 16 is the structural representation of lower prop cock body.
Figure 17 is cushion rubber bumper and its structural representation for maintaining steel ring.
Figure 18 is the structural representation of shaft bottom buffer spring.
Figure 19 is the structural representation that plunger rises tangent plane.
Figure 20 is the effect schematic diagram of well head push rod.
Figure 21 is the effect schematic diagram of fishing device.
1- push rods fixing bolt in figure；2- push rods；3- oil pipes；4- sleeve pipes；5- preventers；6- deformed spring fixing devices；
7- heterotypic springs；8- heterotypic spring gum covers；9- upper prop cock body hollow shafts；10- steel balls；11- clamping plate support springs；12- beads are consolidated
Clamp plate；13- Boards wall circles；The supporting bolt of 14- retainer plates；15- lower prop cock bodys；16- cushion rubber bumpers；17- rubber cushions maintain steel
Circle；18- buffer springs；19- settles down device；20- plunger fishing devices；21- upper prop cock bodys；22- fishing head latch plates；23- is salvaged
Head spring.
Embodiment：
The utility model is described in further detail below in conjunction with the accompanying drawings：
As shown in Fig. 1 to Figure 21, this kind can realize gas well responding curve of well quantity-produced plunger gas producing device, including oil pipe
3rd, sleeve pipe 4 and preventer 5 and device 19 of settling down, sleeve pipe 4 are located in oil pipe 3, annular gap are left between the two, in the He of oil pipe 3
The upper end connection preventer 5 of sleeve pipe 4, device 19 of settling down is located at the bottom of sleeve pipe 4, and it is unique in that：
The plunger gas producing device also includes push rod 2, the upper plug with upper prop cock body hollow shaft 9 being located in sleeve pipe 4
Body 21, deformed spring fixing device 6, deformed spring 7, heterotypic spring gum cover 8, steel ball 10, bead strap 12, clamping plate support
Spring 11, Boards wall circle 13 and the supporting bolt 14 of retainer plate, steel ball 10, bead strap 12, clamping plate support spring 11,
The supporting bolt 14 of Boards wall circle 13, retainer plate, lower prop cock body 15, cushion rubber bumper 16, rubber cushion maintain steel ring 17 and buffering elastic
Spring 18.
This kind of plunger gas producing device employs a kind of built-up piston and pusher structure, the radius of the steel ball of built-up piston
It is greater than the diameter of upper prop cock body hollow shaft and lower prop cock body centre bore, so during Combined plunger piston is up, steel ball
It is enough to cover upper prop cock body hollow shaft completely, after Combined plunger piston is up to maximum height, because push rod length long enough, this
Sample just can simultaneously rise steel ball turn down so that ball again be unlikely to drop out of plunger so that it is descending to reduce plunger
When resistance area area, so as to reduce the friction in down stroke of plunger body, make after gas output, work made under conditions of responding curve of well
Stick harness is smoothly descending.
As shown in Figure 3, Figure 4, deformed spring fixing device 6, deformed spring 7, deformed spring gum cover 8, steel ball 10, bead are solid
Clamp plate 12, clamping plate support spring 11, Boards wall circle 13 and the supporting bolt 14 of retainer plate；Steel ball 10, bead strap
12nd, the supporting bolt 14 of clamping plate support spring 11, Boards wall circle 13, retainer plate constitutes an entirety after being connected with each other, positioned at institute
State in the lower annular baffle plate of upper prop cock body 21.Bead strap 12 is designed based on ship type switch, passes through Boards wall circle 13
Fixed with bolt 14, steel ball can be clamped automatically and steel ball is unclamped, and clamping plate can be maintained at two limiting conditions, without stopping
Stay in the unstable position of centre, can prevent steel ball during plunger is up due to pressure erratic fluctuations and from upper prop
Depart from cock body flowing hole；It is connected through a screw thread between spring fitting device and upper prop the cock body hollow shaft, the special-shaped bullet
Spring is sleeved in the upper prop cock body hollow shaft, spacing in hollow shaft by the deformed spring fixing device, but can be along upper
Experiencing small oscillating movements above and below the axial direction of plunger body hollow shaft, the deformed spring gum cover is sleeved on the outside of the deformed spring；It is different
Being mainly designed to of shape spring, for blocking the annular space between plunger and oil pipe during plunger is up, prevents gas loss
With liquid slip, and due to olive shape spring be designed to spring is produced deformation when by corresponding force, can stretch and subtract
The diameter of small maximum, slight reducing is run into piston lifting process or barrier is met can pass through without blocking finally
Cause piston lifting failure.
The radius of steel ball is more than upper prop cock body hollow shaft 9.
With reference to Fig. 3, Fig. 8, Figure 19, Figure 20, Figure 21, the radius of the steel ball in piston is greater than upper prop cock body hollow shaft with
The diameter of plunger body centre bore, when shaft bottom overstock when, now built-up piston at the bottom, steel ball fall lower prop cock body centre bore it
The cushion rubber bumper of place, plunger and lower section is in close contact, and four flowing holes of lower prop cock body ring portion are covered by cushion rubber bumper, and this is at present
Square pressure is all acted on steel ball, promotes bead up, it is desirable to which lower prop cock body should not be long, is so more preferably ensured on steel ball energy
Row is arrived at steel ball clamping plate, and when bead is up at steel ball clamping plate, due to the principle of ship type switch, clamping plate can be held tightly small automatically
Ball, because the presence of pressure below, bead can't be fallen, now bead blocks the upper hollow shaft of plunger completely, whole oil
Pipe area of passage is enclosed, along with the presence of heterotypic spring, it is sufficient to is ensured that material is smoothly lifted above plunger, and is unlikely to
Fall after rise., thus can be the steel risen simultaneously because push rod length long enough after Combined plunger piston is up to maximum height
Ball is turned down, and the central hole of lower prop cock body is dropped to again, thus ball again be unlikely to drop out of plunger because lower plunger
The presence of four apertures around body, after bead is pushed away from, now up and down communicate so that reduce plunger it is descending when resistance area
Area, so as to reduce the friction in down stroke of plunger body, make after gas output, make piston boit smooth under conditions of responding curve of well
It is descending.
The main body of described lower prop cock body 15 is inverted hollow cylinder, and one is extended in the lower end of hollow cylinder
Individual hollow conical round table, all regions of ring of the conical round table are provided with four excessively stream holes, the bottom of the conical round table
Centre is provided with the one vertical central through hole run through, and the diameter of the central through hole is slightly less than the diameter of steel ball 10；
It is connected through a screw thread between upper prop cock body 21 and lower prop cock body 15；
The top of the push rod 2 is fixed on by supporting bolt 1 outside the oil pipe at well head, the diameter of the push rod
Less than the diameter of the upper prop cock body quill shaft, the length of the push rod for 1.5 times to 2 times of the upper plug body length it
Between；The top of the push rod 2 is rounded tabs, and the surrounding of the rounded tabs is provided with flowing hole, to realize not exclusively masking oil
The purpose of pipe.
The cushion rubber bumper, rubber cushion maintenance steel ring are placed sequentially in the bottom of the lower prop cock body, and the cushion rubber bumper is adopted
With quality of rubber materials, diameter is identical with tubing diameter；The buffer spring is fixed on the bottom of oil pipe, in the upper of device 19 of settling down
Side, the spring uses spring steel material.Cushion rubber bumper 16 is mainly as the medium between plunger and shaft bottom buffer spring, to post
The soft buffering of row is filled in, while closing the excessively stream hole of lower prop cock body, lower prop cock body centre bore is turned into unique gas excessively stream
Passage, rubber cushion maintains steel ring in cushion rubber bumper, for keeping the unimpeded of the main excessively stream hole of lower prop cock body and oil pipe space, it is ensured that
Steel ball can be shifted onto steel ball fixing device and trigger the motion of corresponding mechanism by pressure difference above and below steel ball.After buffer spring, when
Piston boit goes downwards to bottom, and the downstream rate caused prevented also from the descending process of built-up piston because resistance is too small is accelerated, from
And prevent the destruction to oil pipe bottom device.Understood with reference to Figure 17 and Figure 18, the cushion pad placed below oil pipe being capable of guard column
Plug and bottom equipment, the shock of impulsive force during greatly alleviating or avoiding plunger descending to the equipment in itself and shaft bottom.
In addition, this kind of plunger gas producing device can also be connected with the fishing head bullet of a cross structure in the lower end of push rod 2
Spring plank 22, composition post is attached between the movable end of fishing head latch plate 22 and the lower end of push rod 2 by fishing head spring 23
Fill in fishing device 20.With reference to Fig. 5 and Fig. 6, this fishing device is used for upkeep operation, cross is constituted by combined type latch plate and spring
Structure fishing head, under external force because deformation can enter the less upper prop cock body of diameter, and is stuck in upper prop cock body
At central aperture hole.Preventer is closed after well head, can carry out salvaging upkeep operation to plunger.Plunger fishing device is improved by push rod
, it is mainly used in salvaging upkeep operation.It is this that cross structure fishing head is constituted by combined type latch plate and spring, in outer masterpiece
Because deformation can enter the less upper prop cock body of diameter under, and it is stuck in the central hole of upper prop cock body.
During practical application, cushion rubber bumper uses quality of rubber materials, and rubber cushion maintains steel ring to be placed on lower prop cock body bottom, diameter with
Tubing diameter is identical.Buffer spring is fixed on the bottom of oil pipe, and above device of settling down, spring uses spring steel material.Shaft bottom
Settle down device, diameter is identical with tubing diameter, the technique of painting is simplified in the drawing of the present application, this structure is by slips card in fact
The desired depth of oil pipe is scheduled on, but to control plunger in the drop-off positions of underground close to the bottom of oil pipe.
Cushion rubber bumper, rubber cushion maintain the diameter of steel ring, buffer spring, cushion rubber bumper and device of settling down identical with oil pipe, when
, can be directly by wire Launching and Bailing operation tripping in oil pipe bottom when these structures are placed on shaft bottom, buffer unit can be rest directly upon
Settle down device top.
The course of work of the present apparatus is given below：It is divided into descending two parts of the up and plunger of plunger.
Plunger it is up：When built-up piston runs to oil pipe bottom, because the sealing function of cushion rubber bumper, under
The hole of periphery four of plunger body is blocked by cushion rubber bumper, and such lower prop cock body centre bore turns into unique flowing hole, now steel ball
It is on centre bore, what such air pressure was just concentrated acts on steel ball ball, makes steel ball smoothly up, and during up
Touch bead strap, steel ball held tightly automatically, be so unlikely to it is up during ball separated with upper prop cock body hollow shaft, this
When on when area of passage all sealed, the liquid above plunger will not fall after rise.The design of deformed spring is also mainly to be used for
The annular space between plunger and oil pipe is being blocked during plunger is up.
Plunger it is descending：When combined plunger is integrally up at the top of oil pipe, push rod is played a role, and steel ball is pushed away into fixation
Clamping plate, then drops back into lower prop cock body central hole again.During plunger is integrally descending, lower prop cock body central hole is in
Steel ball be not enough to shelter from four flowing holes of periphery, descending area of passage is so increased as far as possible, so as to realize
Plunger it is smooth descending.
Claims (1)
1. one kind can realize gas well responding curve of well quantity-produced plunger gas producing device, including oil pipe (3), sleeve pipe (4) and anti-
Spray apparatus (5) and device of settling down (19), sleeve pipe (4) are located in oil pipe (3), annular gap are left between the two, in oil pipe (3) and sleeve pipe
(4) upper end connection preventer (5), device of settling down (19) is located at the bottom of sleeve pipe (4), it is characterised in that：
The plunger gas producing device also includes push rod (2), the upper prop with upper prop cock body hollow shaft (9) being located in sleeve pipe (4)
Cock body (21), deformed spring fixing device (6), deformed spring (7), heterotypic spring gum cover (8), steel ball (10), bead geometrical clamp
Plate (12), clamping plate support spring (11), Boards wall circle (13) and the supporting bolt of retainer plate (14), steel ball (10), bead are solid
It is clamp plate (12), clamping plate support spring (11), Boards wall circle (13), the supporting bolt of retainer plate (14) lower prop cock body (15), slow
Rush rubber cushion (16), rubber cushion and maintain steel ring (17) and buffer spring (18)；
Deformed spring fixing device (6), deformed spring (7), deformed spring gum cover (8), steel ball (10), bead strap
(12), clamping plate support spring (11), Boards wall circle (13) and the supporting bolt of retainer plate (14)；Steel ball (10), bead are fixed
Clamping plate (12), clamping plate support spring (11), Boards wall circle (13), the supporting bolt of retainer plate (14) constitute one after being connected with each other
It is overall, in the lower annular baffle plate of the upper prop cock body (21)；Wherein, the bead strap passes through Boards wall circle
(13) fixed with bolt (14), to realize automatic clamping and unclamp steel ball (10)；The spring fitting device is empty with upper prop cock body
It is connected through a screw thread between heart axle, the deformed spring is sleeved in the upper prop cock body hollow shaft, passes through the deformed spring
Fixing device is spacing in hollow shaft, but can be along experiencing small oscillating movements, the deformed spring above and below the axial direction of upper prop cock body hollow shaft
Gum cover is sleeved on the outside of the deformed spring；The radius of steel ball (10) is more than upper prop cock body hollow shaft (9)；
The main body of described lower prop cock body (15) is inverted hollow cylinder, and one is extended in the lower end of hollow cylinder
Hollow conical round table, all regions of ring of the conical round table are provided with four excessively stream holes, the bottom center of the conical round table
The one vertical central through hole run through is provided with, the diameter of the central through hole is slightly less than the diameter of steel ball (10)；
It is connected through a screw thread between upper prop cock body (21) and lower prop cock body (15)；
The top of the push rod (2) is fixed on by supporting bolt (1) outside the oil pipe at well head, the diameter of the push rod
Less than the diameter of the upper prop cock body quill shaft, the length of the push rod for 1.5 times to 2 times of the upper plug body length it
Between；The top of the push rod (2) is rounded tabs, and the surrounding of the rounded tabs is provided with flowing hole, to realize incomplete masking
The purpose of oil pipe；
The cushion rubber bumper, rubber cushion maintenance steel ring are placed sequentially in the bottom of the lower prop cock body, and the cushion rubber bumper uses rubber
Glue material matter, diameter is identical with tubing diameter；The buffer spring is fixed on the bottom of oil pipe, the top in device of settling down (19),
The spring uses spring steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621348261.3U CN206419000U (en) | 2016-12-09 | 2016-12-09 | One kind can realize gas well responding curve of well quantity-produced plunger gas producing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621348261.3U CN206419000U (en) | 2016-12-09 | 2016-12-09 | One kind can realize gas well responding curve of well quantity-produced plunger gas producing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206419000U true CN206419000U (en) | 2017-08-18 |
Family
ID=59575599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621348261.3U Withdrawn - After Issue CN206419000U (en) | 2016-12-09 | 2016-12-09 | One kind can realize gas well responding curve of well quantity-produced plunger gas producing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206419000U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106481320A (en) * | 2016-12-09 | 2017-03-08 | 东北石油大学 | One kind can realize gas well responding curve of well quantity-produced plunger gas producing device |
| CN117262945A (en) * | 2023-11-21 | 2023-12-22 | 上海华菱电站成套设备股份有限公司 | Mine wellhead protection device for mine hoist |
-
2016
- 2016-12-09 CN CN201621348261.3U patent/CN206419000U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106481320A (en) * | 2016-12-09 | 2017-03-08 | 东北石油大学 | One kind can realize gas well responding curve of well quantity-produced plunger gas producing device |
| CN117262945A (en) * | 2023-11-21 | 2023-12-22 | 上海华菱电站成套设备股份有限公司 | Mine wellhead protection device for mine hoist |
| CN117262945B (en) * | 2023-11-21 | 2024-01-23 | 上海华菱电站成套设备股份有限公司 | Mine wellhead protection device for mine hoist |
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Granted publication date: 20170818 Effective date of abandoning: 20181211 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20170818 Effective date of abandoning: 20181211 |