CN205532511U - Pumping unit of oil well - Google Patents
Pumping unit of oil well Download PDFInfo
- Publication number
- CN205532511U CN205532511U CN201620295389.1U CN201620295389U CN205532511U CN 205532511 U CN205532511 U CN 205532511U CN 201620295389 U CN201620295389 U CN 201620295389U CN 205532511 U CN205532511 U CN 205532511U
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- CN
- China
- Prior art keywords
- oil well
- pumping unit
- sliding sleeve
- plunger
- urceolus
- Prior art date
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- 239000003129 oil well Substances 0.000 title claims abstract description 57
- 238000005086 pumping Methods 0.000 title claims abstract description 53
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 239000004744 fabric Substances 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 7
- 238000010793 Steam injection (oil industry) Methods 0.000 description 16
- 239000003921 oil Substances 0.000 description 13
- 241000252254 Catostomidae Species 0.000 description 9
- 239000012530 fluid Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid group Chemical group C(CCCCCCC\C=C/CCCCCCCC)(=O)O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
The utility model discloses a pumping unit of oil well, it includes: the sliding sleeve has the through -hole on, set up at the inside pawl spring of sliding sleeve, and the pawl spring can produce to slide with the sliding sleeve opens and close two types so that the through -hole has, the setting is at the hoist mechanism with liquid lifting that is used for of pawl spring lower extreme, the outer tube outside sliding sleeve, hoist mechanism is established to the cover, and the outer tube forms the annular space with sliding sleeve and hoist mechanism, the setting has the passageway of opening, intercommunication hoist mechanism and two -way connector side below intercommunication annular space and the two -way connector at the two -way connector of outer tube with the hoist mechanism lower extreme, two -way connector, and the opening is one at least, and the opening distributes in the border around two -way connector's axis hoop, in the middle part of the passageway intercommunication two -way connector upper surface and two -way connector's side, when the through -hole was in the open mode, opening, annular space and through -hole formed first runner. This pumping unit of oil well can realize annotating vapour, recovering the oil in an organic whole to solve steam caused the harm to pumping unit of oil well pump barrel internals problem.
Description
Technical field
This utility model relates to oilfield exploitation technical field, particularly to a kind of pumping unit of oil well.
Background technology
How to reduce cost, to greatest extent viscous crude, super heavy oil recovery out, be that world oil interface is faced
Common issue.Viscous crude is high due to viscosity, gives exploitation, collects defeated and processing and bring the biggest difficulty, learns both at home and abroad
Person has done numerous studies work and has reduced thick oil viscosity.Improve the thinking of heavy crude reservoir yield at present mainly
Reduce viscosity of thickened oil, improve Reservoir Permeability, increase producing pressure differential, main mature technology have heat extraction by steam injection,
Combustion in situ, hot water+chemical huffpuff, take sand cooling and adopt etc..
At present, steam injection heating exploitation is the topmost mining type of viscous crude field, and it is thick that it occupies China
Oil exploitation more than 90%.The withdrawal mechanism of steam injection heating exploitation mainly improves rheological characteristic by heating, viscosity reducing,
High temperature improves oleic permeability and thermal expansion, the displacement of reservoir oil effect of steam (hot water) power, dissolved gas drive
Effect.On-the-spot heavy oil wells typically requires during implementing heat extraction by steam injection and enters down heat-proof string steam injection, so
After trip out steam injection string, then under enter oil pipe, oil well pump matching with electrical heating and normally produce.Treat this
After wheel production terminates, the flow string that recurs out carries out next round steam injection, oil recovery.Due to repeated multiple times of needs
Lower tubular column so that operation, production process are the most loaded down with trivial details, work operations amount is big, relatively costly, to oil well just
Often produce and economic benefit is the most unfavorable.
Utility model content
In order to overcome the drawbacks described above of prior art, this utility model embodiment is to be solved be technical problem is that
Providing a kind of pumping unit of oil well, it is capable of steam injection, recovers the oil in one, and solves high-temperature steam
To the pumping unit of oil well hurtful problem of pump barrel inner body.
The concrete technical scheme of this utility model embodiment is:
A kind of pumping unit of oil well, comprising:
Sliding sleeve, described sliding sleeve has a through hole,
It is arranged on the pawl spring within described sliding sleeve, slip can be produced between described pawl spring and described sliding sleeve so that institute
State through hole and there is opening and closing two states；
Be arranged on pawl spring lower end for by the hoisting mechanism of lifting liquid；
It is set in the outer tube outside described sliding sleeve, described hoisting mechanism, described outer tube and described sliding sleeve and described carry
Rise mechanism and form annular space；
Being arranged on the duplex fitting of described outer tube and described hoisting mechanism lower end, described duplex fitting has connection
Described annular space and the opening below described duplex fitting, connect described hoisting mechanism and described duplex fitting
The passage of side, the described opening of described duplex fitting is at least one, and described opening is around described duplex fitting
Axis circumferentially distributed in edge, in duplex fitting upper surface described in the described channel connection of described duplex fitting
Portion and the side of described duplex fitting；
When described through hole is in open mode, described opening, described annular space and described through hole form the
One runner, when described through hole is closed, described passage, described hoisting mechanism form the second runner.
Preferably, described sliding sleeve, the upper end of described outer tube are provided with top connection, and described top connection makes described
The upper end of annular space seals.
Preferably, it is provided with elastic component between described pawl spring and described top connection.
Preferably, described elastic component at least includes spring.
Preferably, the lower end of described sliding sleeve inwall is provided with the lobe can blocked mutually with described pawl spring.
Preferably, described duplex fitting lower end connect have tail pipe, the outside of described tail pipe be provided with screen cloth and
Described screen cloth is risen the screen cloth centralizer of centralizing function.
Preferably, described hoisting mechanism includes:
Urceolus, the upper end of described urceolus is connected with described sliding sleeve；
The plunger pull bar being arranged in described urceolus；
The plunger connector being arranged between described urceolus and described plunger pull bar be connected with plunger connector
The first valve seat that one plunger is connected with described plunger, be arranged on described first valve seat lower end the first valve ball,
The second plunger being connected with described plunger pull bar, the second valve ball being set in outside described second plunger and institute
State plunger pull bar to be connected and the locating part that described second valve ball is spacing is connected for supporting with described urceolus
The second valve seat of the second valve ball is stated in residence.
Preferably, described urceolus includes the pump barrel being connected with described sliding sleeve, is connected with described pump barrel lower end
Pump barrel lower contact, the standing valve urceolus being connected with described pump barrel lower contact.
Preferably, the lower end of described urceolus connects urceolus centralizer.
Preferably, between described second plunger and described second valve ball, it is provided with standing valve sealing drum, described solid
The upper end determining valve sealing drum is provided with and described second valve ball can be carried out spacing fixing nut.
Preferably, the lower end of described second plunger is provided with lower contact.
Preferably, it is provided with the righting body of rod between described second plunger and described plunger pull bar.
Preferably, it is connected by jointing between the described righting body of rod with described second plunger, described fixing
It is provided with standing valve cover between valve urceolus and described pump barrel lower contact.
Preferably, described standing valve valve pocket has through hole so that described standing valve valve pocket upper and lower connects,
Slip can be produced so that described through hole is closed or beats between described standing valve cover energy and described jointing
Open.
The technical solution of the utility model has a following notable beneficial effect:
1, use the pumping unit of oil well in this utility model, can under enter one and fill with this oil well oil-pumping
Under the state of the tubing string put, it is directly realized by the steam injection to down-hole and oil recovery operation, in the process without instead
The multiple lower tubular column that repeatedly rises, to be adjusted tubing string or to change, so, greatly reduces the work in oil recovery process
Industry, production process so that the speed of oil recovery is improved, when reducing production cost, raising oil well production
Effect.
2, in tubing string, be provided with this pumping unit of oil well, when the steam injection stage, by carry sucker rod and make
Channel enclosed in urceolus, the first flow outside urceolus opens, and gas first flow from urceolus is injected into
The bottom of tubing string, without the passage in urceolus, so solves high-temperature steam to pumping unit of oil well urceolus
Internal part causes damage, and decreases the fouling of pumping unit of oil well outer barrel simultaneously, and then reduces
The various stuck problem that pumping unit of oil well occurs because of fouling when properly functioning.
3, in tubing string, be provided with this pumping unit of oil well, when the steam injection stage, by carry sucker rod and make
Channel enclosed in urceolus, the steam injection passage outside urceolus opens, and when open flow, fluid passes through from gas injection passage,
Without in urceolus, it is possible to reduce the abrasion because flow stream velocity is too fast, urceolus inner body caused during open flow.
Accompanying drawing explanation
Accompanying drawing described here is only used for task of explanation, and is not intended to limit by any way this utility model
Scope of disclosure.It addition, the shape of each parts in figure and proportional sizes etc. are only schematically, it is used for helping
Help understanding of the present utility model, be not shape and the proportional sizes specifically limiting each parts of this utility model.
Those skilled in the art, under teaching of the present utility model, can select various possible as the case may be
Shape and proportional sizes implement this utility model.
Fig. 1 is the top half of the structural representation of this utility model pumping unit of oil well.
Fig. 2 is the latter half of the structural representation of this utility model pumping unit of oil well.
Structural representation when Fig. 3 is the first flow open mode outside this utility model pumping unit of oil well pump barrel
Top half.
Structural representation when Fig. 4 is the first flow open mode outside this utility model pumping unit of oil well pump barrel
The latter half.
Fig. 5 is the structural representation of duplex fitting in this utility model pumping unit of oil well.
The reference of the figures above:
1, top connection；2, sliding sleeve；3, spring；4, pawl spring；5, outer tube；6, upper connection；7, draw
Bar top connection；8, plunger pull bar；9, pump barrel；10, plunger connector；11, the first plunger；12, first
Valve seat；13, the first valve ball；14, the righting body of rod；15, pump barrel lower contact；16, locking nut；17、
Standing valve urceolus；18, jointing；19, standing valve cover；20, fixing nut；21, the second valve ball；
22, the second valve seat；23, standing valve sealing drum；24, the second plunger；25, urceolus centralizer；26, under
Joint；27, duplex fitting；271, opening；272, passage；28, screen cloth；29, tail pipe；30, sieve
Net centralizer；31, first flow；32, the second runner；33, annular space.
Detailed description of the invention
In conjunction with accompanying drawing and the description of this utility model detailed description of the invention, it is possible to clearly understand this practicality
Novel details.But, detailed description of the invention of the present utility model described here, it is only used for explaining this reality
By novel purpose, and can not be understood as by any way is to restriction of the present utility model.New in this practicality
Under the teaching of type, technical staff is it is contemplated that based on the most possible deformation of the present utility model, these are all answered
It is considered to belong to scope of the present utility model.
Fig. 1 is the top half of the structural representation of this utility model pumping unit of oil well, and Fig. 2 is this practicality
The latter half of the structural representation of Novel oil well oil rig, as shown in Figure 1 and Figure 2, new in this practicality
Type discloses a kind of pumping unit of oil well, comprising: sliding sleeve 2, sliding sleeve 2 has a through hole, arrange
At the pawl spring 4 within sliding sleeve 2, can produce between pawl spring 4 and sliding sleeve 2 slip so that through hole have open and
Close two states；Be arranged on pawl spring 4 lower end for by the hoisting mechanism of lifting liquid；It is set in sliding sleeve
2, the outer tube 5 outside hoisting mechanism, outer tube 5 forms annular space 33 with sliding sleeve 2 and hoisting mechanism；It is arranged on
Outer tube 5 and the duplex fitting 27 of hoisting mechanism lower end, duplex fitting 27 has connection annular space 33 with double
Opening 271, connection hoisting mechanism and the passage 272 of duplex fitting 27 side below pass joint 27；When logical
When hole is in open mode, opening 271, annular space 33 and through hole form first flow 31, work as through hole
When closed mode, passage 272, hoisting mechanism form the second runner 32.
In tubing string, be provided with this pumping unit of oil well, when the steam injection stage, by carry sucker rod and make pump
Cylinder 9 in passage 272 close, the first flow 31 outside pump barrel 9 is opened, gas from pump barrel 9 first
Runner 31 is injected into the bottom of tubing string, without 272, the passage in pump barrel 9, so solves high temperature and steams
Part within pumping unit of oil well pump barrel 9 is caused damage by vapour, decreases pumping unit of oil well pump simultaneously
Cylinder fouling within 9, and then reduce the various cards that pumping unit of oil well occurs when properly functioning because of fouling
Dead problem.
Pumping unit of oil well in this utility model will be further explained explanation below, as it is shown in figure 1,
There is a through hole, the inner and outer wall of this through hole connection sliding sleeve 2 on the sidewall of sliding sleeve 2.The inside of sliding sleeve 2
Being provided with pawl spring 4, pawl spring 4 can produce with sliding sleeve 2 and slide, when pawl spring 4 upward sliding, on sliding sleeve 2
Through hole be in open mode, when pawl spring 4 slide downward, the through hole on sliding sleeve 2 is by pawl spring 4 closing
In closed mode.
The lower end of pawl spring 4 connects to be had for by the hoisting mechanism of lifting liquid, sliding sleeve 2, hoisting mechanism overcoat
Being provided with outer tube 5, outer tube 5 forms annular space 33 with sliding sleeve 2 and hoisting mechanism.This annular space 33 is with sliding
Through hole connection on set 2.When pawl spring 4 upward sliding, the through hole on sliding sleeve 2 is in open mode, ring
Shape space 33 is internal with sliding sleeve 2 to be connected, and now high-temperature steam can enter annular sky from the through hole of sliding sleeve 2
Between 33.
Sliding sleeve 2, the upper end of outer tube 5 are provided with top connection 1, and top connection 1 makes the upper end of annular space 33
Seal.
The lower end of pawl spring 4 is provided with for by the hoisting mechanism of lifting liquid, and this hoisting mechanism includes: urceolus,
The upper end of urceolus is connected with sliding sleeve 2；The plunger pull bar 8 being arranged in urceolus；It is arranged on urceolus and plunger
Plunger connector 10, the first plunger 11 being connected with plunger connector 10 between pull bar 8, it is connected with plunger
The first valve seat 12, the first valve ball 13 being arranged on the first valve seat 12 lower end that connect, it is connected with plunger pull bar 8
The second plunger 24 connect, the second valve ball 21 being set in outside the second plunger 24 are connected with plunger pull bar 8
And the second valve for propping up the second valve ball 21 that the spacing locating part of the second valve ball 21 is connected with urceolus
Seat 22.
The principle of hoisting mechanism is similar with the principle of oil well pump of the prior art, upwards moves at plunger pull bar 8
During Dong, the first valve seat 12 and the first valve ball 13 are closed, so that being in the first valve ball 13
The upward fluid of top.Open mode then it is between second valve ball 21 and the second valve seat 22, second
Fluid below valve ball 21 is flowed to above the second valve ball 21 by the second valve ball 21.Downward at plunger pull bar 8
During movement, then it is closed between the second valve ball 21 and the second valve seat 22, the first valve seat 12
Being in open mode with the first valve ball 13, the fluid below the first valve ball 13 is then flowed to by the first valve ball 13
Above first valve ball 13.And so forth, and then realize hoisting mechanism fluid is drawn up.
In an optional embodiment, can be provided with solid between the second plunger 24 and the second valve ball 21
Determining valve sealing drum 23, the upper end of standing valve sealing drum 23 is provided with and the second valve ball 21 can be carried out spacing consolidating
Determine nut 20.In an optional embodiment, the lower end of the second plunger 24 can be provided with lower contact
26.This lower contact 26 is for closing, in preventing the second plunger 24 bottom of the second plunger 24
Portion enters liquid.In an optional embodiment, the upper end of plunger pull bar 8 can connect has top to connect
6, it is connected by pull bar top connection 71 between upper connection 6 with plunger pull bar 8, upper connection 6 can
Directly it is connected with sucker rod.
In an optional embodiment, elastic component between pawl spring 4 and top connection 1, can be provided with, if
After being equipped with elastic component, when sucker rod drives upper connection 6 to move upward, upper connection 6 is by pull bar
Joint 71 drives pawl spring 4 to overcome the elastic force of elastic component to move upward, and then the through hole on sliding sleeve 2 is in
Open mode.When the force that sucker rod moves downward or sucker rod does not exist upwards, in the effect of elastic component
Under, pawl spring 4 moves downward, and then the through hole on sliding sleeve 2 is closed.This elastic component is permissible
It is spring 3, certain, in this application the kind of elastic component is not done any restriction, other is any has
The elastic reciprocating element of pawl spring 4 that enables to is all feasible.
In an optional embodiment, the lower end of sliding sleeve 2 inwall is provided with can block with pawl spring 4 phase
Lobe, when pawl spring 4 moves upward, it is possible to by this lobe and sliding sleeve 2 phase card, thus drive cunning
Set 2 moves upward.
Easy for installation for whole device, urceolus is split into multiple parts, so can facilitate whole outside
It is internal, so urceolus can include the pump barrel 9 being connected with sliding sleeve 2, with pump barrel 9 that cylinder is installed to outer tube 5
The pump barrel lower contact 15 that lower end is connected, the standing valve urceolus 17 being connected with pump barrel lower contact 15.
In an optional embodiment, between the righting body of rod 14 and the second plunger 24, pass through jointing
18 connect, and are provided with standing valve cover 19 between standing valve urceolus 17 and pump barrel lower contact 15.Standing valve valve pocket
On there is through hole so that standing valve valve pocket upper and lower connection, standing valve cover 19 can and jointing 18 between
Slip can be produced so that through hole is closed or opens.When jointing 18 moves up, through hole is opened,
The fluid of bottom can enter the top of standing valve cover 19.When jointing 18 moves down, through hole
Closing, prevent the fluid on standing valve cover 19 top from moving down, the fluid on standing valve cover 19 top can be more
Good is moved upward to top by the first valve ball 13.Jointing 18 be provided above a locking nut
16, this locking nut 16 is used for ensureing the fastness that jointing 18 connects, the company of preventing after long working
Joint 18 loosens.
Fig. 5 is the structural representation of duplex fitting 27 in this utility model pumping unit of oil well, as it is shown in figure 5,
The opening 271 of duplex fitting 27 at least one, opening 271 is circumferentially distributed in limit around the axis of duplex fitting 27
Edge.The passage 272 of duplex fitting 27 connects the side of duplex fitting 27 upper surface middle part and duplex fitting 27.As
This, annular space 33 can be connected with the lower end of duplex fitting 27 by the opening 271 of duplex fitting 27 both sides.
The inside of urceolus can be connected with the side of duplex fitting 27, namely by the passage 272 of duplex fitting 27
Saying, the crude oil in oil well can flow into the inside of urceolus by the passage 272 of duplex fitting 27, crude oil and then logical
Cross hoisting mechanism to be upwards drawn out of.
In an optional embodiment, the lower end of urceolus can connect urceolus centralizer 25, this urceolus
Urceolus is played centralizing function by centralizer 25, so that urceolus keeps vertical state, avoids urceolus with outer simultaneously
Pipe 5 contacts.
In an optional embodiment, the lower end of duplex fitting 27 connects tail pipe 29, tail pipe 29
Outside is provided with screen cloth 28 and the screen cloth centralizer 30 to 28 centralizing functions of screen cloth.The work of this screen cloth 28
With being that down-hole is entered by the second runner 32 being formed by the passage 272 of hoisting mechanism with duplex fitting 27
During row pumping crude oil, prevent impurity from being entered inside hoisting mechanism by the passage 272 of duplex fitting 27.
Structural representation when Fig. 3 is first flow 31 open mode outside this utility model pumping unit of oil well pump barrel 9
The top half of figure, Fig. 4 is first flow 31 open mode outside this utility model pumping unit of oil well pump barrel 9
Time structural representation the latter half, as shown in Figure 3, Figure 4, tubing string is provided with this pumping unit of oil well
After, sucker rod is connected with the upper connection 6 of pumping unit of oil well, when the steam injection stage, by propose oil pumping
Bar makes the passage 272 in urceolus close, and meanwhile, pawl spring 4 and sliding sleeve 2 produce and slide so that logical on sliding sleeve 2
Hole is opened, and then makes the first flow 31 outside urceolus connect, and gas can be from first flow 31 note urceolus
Enter the bottom to tubing string, without the passage 272 in urceolus, so solve high-temperature steam and oil well oil-pumping is filled
The part putting outer barrel causes damage, and decreases the fouling of pumping unit of oil well outer barrel simultaneously, enters
And reduce the various stuck problem that pumping unit of oil well occurs when properly functioning because of fouling.
In tubing string, be provided with this pumping unit of oil well, when the steam injection stage, by carry outside sucker rod makes
Passage 272 in Tong is closed, and the steam injection passage 272 outside urceolus is opened, can also allow when open flow fluid from
Gas injection passage 272 passes through, without in urceolus, it is possible to reduce because flow stream velocity is too fast to urceolus during open flow
The abrasion that inner body causes.
Each embodiment in this specification all uses the mode gone forward one by one to describe, and each embodiment stresses
Being all the difference with other embodiments, between each embodiment, identical similar part sees mutually.
Above-described embodiment only for technology of the present utility model design and feature are described, its object is to allow and is familiar with this
The personage of item technology will appreciate that content of the present utility model and implements according to this, can not limit this practicality with this
Novel protection domain.All equivalence changes made according to this utility model spirit or modification, all should contain
Cover within protection domain of the present utility model.
Claims (14)
1. a pumping unit of oil well, it is characterised in that comprising:
Sliding sleeve, described sliding sleeve has a through hole,
It is arranged on the pawl spring within described sliding sleeve, slip can be produced between described pawl spring and described sliding sleeve so that institute
State through hole and there is opening and closing two states；
Be arranged on pawl spring lower end for by the hoisting mechanism of lifting liquid；
It is set in the outer tube outside described sliding sleeve, described hoisting mechanism, described outer tube and described sliding sleeve and described carry
Rise mechanism and form annular space；
Being arranged on the duplex fitting of described outer tube and described hoisting mechanism lower end, described duplex fitting has connection
Described annular space and the opening below described duplex fitting, connect described hoisting mechanism and described duplex fitting
The passage of side, the described opening of described duplex fitting is at least one, and described opening is around described duplex fitting
Axis circumferentially distributed in edge, in duplex fitting upper surface described in the described channel connection of described duplex fitting
Portion and the side of described duplex fitting；
When described through hole is in open mode, described opening, described annular space and described through hole form the
One runner, when described through hole is closed, described passage, described hoisting mechanism form the second runner.
Pumping unit of oil well the most according to claim 1, it is characterised in that described sliding sleeve, described outside
The upper end of pipe is provided with top connection, and described top connection makes the upper end of described annular space seal.
Pumping unit of oil well the most according to claim 2, it is characterised in that described pawl spring and described on
Elastic component it is provided with between joint.
Pumping unit of oil well the most according to claim 3, it is characterised in that described elastic component at least wraps
Include spring.
Pumping unit of oil well the most according to claim 1, it is characterised in that under described sliding sleeve inwall
End is provided with the lobe can blocked mutually with described pawl spring.
Pumping unit of oil well the most according to claim 1, it is characterised in that under described duplex fitting
End connection has tail pipe, the outside of described tail pipe are provided with screen cloth and described screen cloth rises the screen cloth of centralizing function hold up
Positive device.
Pumping unit of oil well the most according to claim 1, it is characterised in that described hoisting mechanism includes:
Urceolus, the upper end of described urceolus is connected with described sliding sleeve；
The plunger pull bar being arranged in described urceolus；
The plunger connector being arranged between described urceolus and described plunger pull bar be connected with plunger connector
The first valve seat that one plunger is connected with described plunger, be arranged on described first valve seat lower end the first valve ball,
The second plunger being connected with described plunger pull bar, the second valve ball being set in outside described second plunger and institute
State plunger pull bar to be connected and the locating part that described second valve ball is spacing is connected for supporting with described urceolus
The second valve seat of the second valve ball is stated in residence.
Pumping unit of oil well the most according to claim 7, it is characterised in that described urceolus includes and institute
State the pump barrel that sliding sleeve is connected, the pump barrel lower contact being connected with described pump barrel lower end, connect under described pump barrel
The standing valve urceolus that head is connected.
Pumping unit of oil well the most according to claim 7, it is characterised in that the lower end of described urceolus is even
It is connected to urceolus centralizer.
Pumping unit of oil well the most according to claim 7, it is characterised in that described second plunger and institute
Stating and be provided with standing valve sealing drum between the second valve ball, the upper end of described standing valve sealing drum is provided with can be to institute
State the second valve ball and carry out spacing fixing nut.
11. pumping unit of oil well according to claim 7, it is characterised in that under described second plunger
End is provided with lower contact.
12. pumping unit of oil well according to claim 8, it is characterised in that described second plunger and institute
State and between plunger pull bar, be provided with the righting body of rod.
13. pumping unit of oil well according to claim 12, it is characterised in that the described righting body of rod with
Connected by jointing between described second plunger, between described standing valve urceolus and described pump barrel lower contact
It is provided with standing valve cover.
14. pumping unit of oil well according to claim 13, it is characterised in that described standing valve valve pocket
On there is through hole so that described standing valve valve pocket upper and lower connection, described standing valve cover can connect with described connection
Slip can be produced so that described through hole is closed or opens between Tou.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620295389.1U CN205532511U (en) | 2016-04-11 | 2016-04-11 | Pumping unit of oil well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620295389.1U CN205532511U (en) | 2016-04-11 | 2016-04-11 | Pumping unit of oil well |
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|---|---|
| CN205532511U true CN205532511U (en) | 2016-08-31 |
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| CN201620295389.1U Active CN205532511U (en) | 2016-04-11 | 2016-04-11 | Pumping unit of oil well |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111927414A (en) * | 2019-05-13 | 2020-11-13 | 中国石油天然气股份有限公司 | Steam injection and oil production pipe column |
| CN112761596A (en) * | 2021-01-13 | 2021-05-07 | 孙伟峰 | Pressure guide structure of pump |
| CN113309498A (en) * | 2021-07-28 | 2021-08-27 | 中国石油大学胜利学院 | Device and method for realizing cold production of thick oil by continuously injecting light oil |
-
2016
- 2016-04-11 CN CN201620295389.1U patent/CN205532511U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111927414A (en) * | 2019-05-13 | 2020-11-13 | 中国石油天然气股份有限公司 | Steam injection and oil production pipe column |
| CN112761596A (en) * | 2021-01-13 | 2021-05-07 | 孙伟峰 | Pressure guide structure of pump |
| CN113309498A (en) * | 2021-07-28 | 2021-08-27 | 中国石油大学胜利学院 | Device and method for realizing cold production of thick oil by continuously injecting light oil |
| CN113309498B (en) * | 2021-07-28 | 2021-09-24 | 中国石油大学胜利学院 | Device and method for realizing cold production of thick oil by continuously injecting light oil |
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