CN106869870A - Chain drive pumping unit - Google Patents
Chain drive pumping unit Download PDFInfo
- Publication number
- CN106869870A CN106869870A CN201710299982.2A CN201710299982A CN106869870A CN 106869870 A CN106869870 A CN 106869870A CN 201710299982 A CN201710299982 A CN 201710299982A CN 106869870 A CN106869870 A CN 106869870A
- Authority
- CN
- China
- Prior art keywords
- reel
- chain
- component
- sucker rod
- steel wire
- 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
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/126—Adaptations of down-hole pump systems powered by drives outside the borehole, e.g. by a rotary or oscillating drive
Abstract
The invention provides a kind of chain drive pumping unit, chain drive pumping unit includes：Drive component, including chain, are provided with connecting portion on chain；First oil pumping component, is connected by the first steel wire rope with connecting portion；Second oil pumping component, it is connected with connecting portion by the second steel wire rope, first oil pumping component and the second oil pumping component are symmetricly set on the front and rear both sides of the direction of motion of connecting portion, first oil pumping component includes the first sucker rod, second oil pumping component includes the second sucker rod, the weight of the first sucker rod and the second sucker rod is identical, and the first sucker rod and the second sucker rod vertically pump, and the direction of motion of first sucker rod is opposite with the direction of motion of second sucker rod.The similar weight of the first sucker rod and the second sucker rod in the embodiment of the present invention, and the direction of motion sets counterweight system of the prior art conversely, can cancel, and reduces the energy consumption of oil well and improves production efficiency.
Description
Technical field
The present invention relates to oil production equipment technical field, specifically a kind of chain drive pumping unit.
Background technology
At present both at home and abroad in oil extraction in oil field engineering, conventional mechanical oil recovery equipment is beam pumping unit.Beam type is pumped
Machine makes it be widely used in oil extraction process due to simple structure, using reliability, used by current China oil field
Oil pumper more than 90% is still beam pumping unit.But lack because its energy consumption is big, operational efficiency is low, stroke is small, occupation of land is big etc.
Point, when thick pool, intensive, deep reservoir is exploited, it is impossible to realize it is economical, efficiently exploit.Chain type oil pump has stroke long,
Inertial load is small, and quality is small and the features such as small floor space, extensive research and application obtained in recent years.
Existing chain drive pumping unit is that the rotary motion of motor is transferred into chain transmission system by belt transmission, drives master
Movable sprocket, drives path chain and round frame to do straight reciprocating motion, then drive sucker rod operation by steel wire rope.Chain is pumped
Machine comes and goes frame lower end balance sprocket wheel and balance chain, balance sprocket wheel connection pneumatic counterbalance system, as traditional oil pumper
Need to repeat configuration balance system, increased energy consumption.On the other hand, although existing chain type oil pump is small with floor space
Advantage, but still be the form that an oil pumper exploits a bite well, lift intensive oil mining efficiency, reduce equal workload energy
Consumption aspect still has greater room for improvement.
The content of the invention
The invention provides a kind of chain drive pumping unit, balance system need not be set and can increase production efficiency to reach
Purpose.
The technical solution adopted for the present invention to solve the technical problems is：A kind of chain drive pumping unit, chain drive pumping unit includes：
Drive component, including chain, are provided with connecting portion on chain；First oil pumping component, is connected by the first steel wire rope with connecting portion；
Second oil pumping component, is connected by the second steel wire rope with connecting portion, and the first oil pumping component is symmetricly set on the second oil pumping component
The front and rear both sides of the direction of motion of connecting portion, the first oil pumping component includes the first sucker rod, and the second oil pumping component is taken out including second
The weight of beam hanger, the first sucker rod and the second sucker rod is identical, and the first sucker rod and the second sucker rod are vertically upper and lower
Move back and forth, the direction of motion of first sucker rod is opposite with the direction of motion of second sucker rod.
Further, the first oil pumping component includes the first reel and the first suspension sheave, one end of the first steel wire rope and company
Socket part is fixedly connected, and the other end of the first steel wire rope is coiled on the first reel, the first suspension sheave coaxially be fixed on first around
In line wheel, and the first suspension sheave can be rotated coaxially with the first reel, and coiling is provided with for even on first suspension sheave
Connect the first beam hanger steel wire rope of the first sucker rod.
Further, the first oil pumping component also includes the second reel and the 3rd reel, the other end of the first steel wire rope
Sequentially pass through the second reel and the 3rd reel and be coiled on the first reel, the rotation direction of the second reel and the 3rd
The rotation direction of reel is conversely, the rotation direction of the 3rd reel is identical with the rotation direction of the first reel.
Further, the first oil pumping component is identical with the second oil pumping modular construction, and the second oil pumping component includes the 4th coiling
Wheel and the second suspension sheave, one end of the second steel wire rope are fixedly connected with connecting portion, and the other end of the second steel wire rope is coiled in the 4th
On reel, the second suspension sheave is coaxially fixed on the 4th reel, and the second suspension sheave can be coaxial with the 4th reel
Rotate, the second beam hanger steel wire rope for connecting the second sucker rod is provided with second suspension sheave.
Further, the second oil pumping component also includes the 5th reel and the 6th reel, the other end of the second steel wire rope
Sequentially pass through the 5th reel and the 6th reel and be coiled on the 4th reel, the rotation direction and the 6th of the 5th reel
The rotation direction of reel is conversely, the rotation direction of the 6th reel is identical with the rotation direction of the 4th reel.
Further, connection chain link is provided with chain, one end and the drive component of connection chain link are located at the same side, connection
The other end of chain link is relative with one end of connection chain link, and the connecting portion includes connection ring, and the connection ring can rotationally be located at chain link
One end of the other end of section, one end of the first steel wire rope and the second steel wire rope is each attached in the connection ring.
Further, connection chain link is provided with rotation through hole, the axis of the rotation through hole and the direction of motion of connection chain link
Vertically, connecting portion also includes bar and fixed termination, and the two ends of the bar connect the fixation termination and the connection ring respectively, and this is consolidated
Fixed end head is located at one end of connection chain link, and the connection ring is located at the other end of connection chain link.
Further, drive component also includes：Chain driving wheel and chain driven pulley, chain around be located at chain driving wheel and
On chain driven pulley；Belt pulley, is co-axially located on chain driving wheel, and belt pulley can drive chain driving wheel to rotate；Drive
Motor, by driving belt and belt pulley drive connection.
Further, driving belt includes the first driving belt and the second driving belt, and drive component also includes decelerator,
Motor is connected by the first driving belt with the input shaft of decelerator, the output shaft of decelerator by the second driving belt with
Belt pulley is connected.
Further, chain drive pumping unit also includes support component, drive component, the first oil pumping component and the second oil pumping component
It is arranged in support component.
The beneficial effects of the invention are as follows, the similar weight of the first sucker rod and the second sucker rod in the embodiment of the present invention, and
And the direction of motion is conversely, therefore the gravity of the first sucker rod and the second sucker rod can cancel out each other, setting can be cancelled existing
Counterweight system in technology, reduces the energy consumption of oil well and improves production efficiency.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing a further understanding of the present invention, of the invention to show
Meaning property and its illustrates, for explaining the present invention, not constitute inappropriate limitation of the present invention embodiment.In the accompanying drawings：
Fig. 1 is the structural representation of chain drive pumping unit embodiment of the present invention；
Fig. 2 is the structural representation of chain in chain drive pumping unit embodiment of the present invention.
Reference in figure：11st, chain；12nd, connecting portion；13rd, connection chain link；14th, chain driving wheel；15th, chain is driven
Wheel；16th, belt pulley；17th, motor；18th, decelerator；21st, the second reel；22nd, the 3rd reel；23rd, the first reel；
24th, the first suspension sheave；25th, the first sucker rod；31st, the 5th reel；32nd, the 6th reel；33rd, the 4th reel；34th, second
Suspension sheave；35th, the second sucker rod；40th, support component；91st, the first steel wire rope；92nd, the second steel wire rope；93rd, the first beam hanger steel wire
Rope；94th, the second beam hanger steel wire rope；95th, the first driving belt；96th, the second driving belt.
Specific embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As depicted in figs. 1 and 2, a kind of chain drive pumping unit is the embodiment of the invention provides, chain drive pumping unit includes driving group
Part, the first oil pumping component, the second oil pumping group.Drive component includes chain 11, and connecting portion 12 is provided with chain 11.First oil pumping
Component is connected by the first steel wire rope 91 with connecting portion 12.Second oil pumping group is connected by the second steel wire rope 92 with connecting portion 12,
First oil pumping component and the second oil pumping group are symmetricly set on the front and rear both sides of the direction of motion of connecting portion 12, the first oil pumping component bag
The first sucker rod 25 is included, the second oil pumping group includes the weight phase of the second sucker rod 35, the first sucker rod 25 and the second sucker rod 35
Together, the first sucker rod 25 and the second sucker rod 35 vertically pump, the motion side of first sucker rod 25
To opposite with the direction of motion of second sucker rod 35.
The similar weight of the first sucker rod 25 and the second sucker rod 35 in the embodiment of the present invention, and the direction of motion conversely,
Therefore the gravity of the first sucker rod 25 and the second sucker rod 35 can cancel out each other, and can cancel setting balance of the prior art
Weighting system, reduces the energy consumption of oil well and improves production efficiency.
As shown in figure 1, the first oil pumping component includes the first reel 23, the second reel 21, the 3rd reel 22 and the
One suspension sheave 24.One end of first steel wire rope 91 is fixedly connected with connecting portion 12, and the other end of the first steel wire rope 91 is sequentially passed through
Second reel 21 and the 3rd reel 22 and fixation is coiled on the first reel 23, the first suspension sheave 24 is coaxial to be fixed on the
On one reel 23, and the first suspension sheave 24 can be rotated coaxially with the first reel 23, be coiled on first suspension sheave 24
It is provided with the first beam hanger steel wire rope 93 for connecting the first sucker rod 25.
, wherein it is desired to explanation, the rotation direction of the second reel 21 and the rotation direction of the 3rd reel 22 conversely,
The rotation direction of the 3rd reel 22 is identical with the rotation direction of the first reel 23.Above-mentioned first suspension sheave 24 with diameter greater than
The diameter of the first reel 23, to reach the move distance purpose of the first sucker rod 25 of increase.
Further, the first oil pumping component is identical with the second oil pumping group structure, and the second oil pumping group includes the 4th reel 33
5th reel 31, the 6th reel 32 and the second suspension sheave 34, one end of the second steel wire rope 92 are fixedly connected with connecting portion 12,
The other end of the second steel wire rope 92 sequentially passes through the 5th reel 31 and the 6th reel 32 and is fixed on the 4th reel 33,
Second suspension sheave 34 is coaxially fixed on the 4th reel 33, and the second suspension sheave 34 can coaxially turn with the 4th reel 33
Dynamic, coiling is provided with the second beam hanger steel wire rope 94 for connecting the second sucker rod 35 on second suspension sheave 34.5th coiling
The rotation direction of wheel 31 is with the rotation direction of the 6th reel 32 conversely, the rotation direction and the 4th reel of the 6th reel 32
33 rotation direction is identical.The diameter with diameter greater than the 4th reel 33 of the second suspension sheave 34.
Drive component also includes chain driving wheel 14, chain driven pulley 15, belt pulley 16, motor 17 and decelerator
18.Chain drive pumping unit in the embodiment of the present invention is horizontal chained oil pumper, and the horizontal winding of chain 11 is located at the He of chain driving wheel 14
On chain driven pulley 15.Belt pulley 16 is co-axially located on chain driving wheel 14, and belt pulley 16 can drive chain driving wheel 14
Rotate.Motor 17 is by driving belt and the drive connection of belt pulley 16.Belt pulley 16 can be driven by motor 17
Rotated with chain driving wheel 14, so as to drive connection chain link 13 to be moved towards left side in Fig. 1 or right side.
It should be noted that as illustrated in fig. 1 and 2, connection chain link 13 is provided with chain 11, connection chain link 13 is provided with and turns
Dynamic through hole, the axis of the rotation through hole is vertical with the direction of motion of connection chain link 13.Through hole is rotated along Fig. 1 perpendicular to paper
Direction set.Connecting portion 12 includes connection ring, bar and fixed termination, and the two ends of bar connect connection ring and fixing end respectively
Head, connection ring is wholely set with bar, and fixed termination is detachably connected with bar, and above-mentioned bar can pass through and rotate through hole and make
Fixed termination is located at one end of connection chain link 13, connection ring is located at the other end of connection chain link 13.Wherein, connection chain link 13
Side is located at the same side with belt pulley 16, and the opposite side of connection chain link 13 is relative with the side of connection chain link 13, and and belt
Wheel 16 is not in the same side.Above-mentioned connection ring, bar and fixed termination can rotate relative to connection chain link 13, above-mentioned fixing end
Head can limit the axial displacement (displacement being perpendicularly to the direction of movement) of bar and connection ring.One end of first steel wire rope 91 and
One end of second steel wire rope 92 is each attached in the connection ring.Two mouthfuls of symmetrical oil wells can be simultaneously carried out in the embodiment of the present invention
Oil pumping operation, the purpose of pumping efficiency is improved so as to reach.
In the embodiment of the present invention, the direction of motion of connection chain link 13 is the width of connection chain link 13, connection chain link 13
Length direction perpendicular to the direction of motion of connection chain link 13, other zip length directions and width on chain 11 with even
The length direction of chain link section 13 is identical with width.The length of above-mentioned connection chain link 13 is connected more than the length of other chain links
Width of the width of chain link 13 less than other chain links.In the embodiment of the present invention, the side of connection chain link 13 is connected concordantly with other,
The opposite side (being provided with one end of connection ring) of connection chain link 13 extend out to the outside of other chain links.
In the embodiment of the present invention, driving belt includes the first driving belt 95 and the second driving belt 96, motor 17
Be connected with the input shaft of decelerator 18 by the first driving belt 95, the output shaft of decelerator 18 by the second driving belt 96 with
Belt pulley 16 is connected.
Chain drive pumping unit also includes support component 40, and drive component, the first oil pumping component and the second oil pumping group are arranged at
In support component 40.Support component 40 includes support base and multigroup support bar, and above-mentioned multigroup support bar is supported on support base
On.Wherein drive component is disposed therein on one group of support bar, and the first oil pumping component and the second oil pumping group are separately positioned in addition
On two groups of support bars.
When being worked using the embodiment of the present invention, as shown in figure 1, the drive shaft of motor 17 is rotated in the counterclockwise direction
When, drive belt pulley 16 to rotate clockwise after decelerator 18 slows down.Belt pulley 16 drives the chain driving wheel being coaxially disposed
14 rotate, so that chain 11 is rotated in the clockwise direction.Above-mentioned connection chain link 13 is mobile towards right side in Fig. 1.
Because the end of connection chain link 13 is provided with connection ring, the steel wire rope 92 of above-mentioned first steel wire rope 91 and second is all connected with
In the connection ring.When connection chain link 13 is moved towards right side, one end of the first steel wire rope 91 is pulled to the right, the first steel wire
The other end of rope 91 is by the second reel 21, the 3rd reel 22 and drives the first reel 23 to rotate.And the first suspension sheave
24 it is coaxial with the first reel 23 be fixedly installed, when the first reel 23 is rotated, the first suspension sheave 24 can also be rotated coaxially.From
And pull the first beam hanger steel wire rope 93 to be lifted up the first sucker rod 25.
Simultaneously as connection chain link 13 is moved towards right side, the second steel wire rope 92 is discharged to the right, the second steel wire rope 92
The other end sequentially passes through the 5th reel 31, the 6th reel 32 and drives the 4th reel 33 to rotate clockwise.Due to second
Suspension sheave 34 is coaxially disposed with the 4th reel 33, and when the 4th reel 33 is rotated clockwise, the second suspension sheave 34 is coaxial suitable
Hour hands are rotated.So as to the second beam hanger steel wire rope 94 be discharged, and move downward the second sucker rod 35.
The operation that connection chain link 13 is moved towards left side is above-mentioned contrary operation, is no longer repeated herein.
It should be noted that in Fig. 1 when connection chain link 13 moves to the low order end of chain driving wheel 14, the first sucker rod
25 upstrokes are to up extreme position, the downward movement of the second sucker rod 35 to descending extreme position.When connection chain link 13 is moved
To chain driven pulley 15 high order end when, the downward movement of the first sucker rod 25 to descending extreme position, the second sucker rod 35 is up
Move to up extreme position.
As can be seen from the above description, the above embodiments of the present invention realize following technique effect：It is of the invention real
Apply the similar weight of the first sucker rod 25 and the second sucker rod 35 in example, and the direction of motion is conversely, therefore the first sucker rod 25
Gravity with the second sucker rod 35 can cancel out each other, and can cancel setting counterweight system of the prior art, reduce
The energy consumption of oil well simultaneously improves production efficiency.
The above, specific embodiment only of the invention, it is impossible to the scope that its restriction invention is implemented, so it is equivalent
The displacement of component, or the equivalent variations made according to scope of patent protection of the present invention and modification, should all still fall within what this patent was covered
Category.In addition, between technical characteristic and technical characteristic in the present invention, between technical characteristic and technical scheme, technical scheme with
Can be used with independent assortment between technical scheme.
Claims (10)
1. a kind of chain drive pumping unit, it is characterised in that the chain drive pumping unit includes：
Drive component (10), including chain (11), are provided with connecting portion (12) on chain (11)；
First oil pumping component (20), is connected by the first steel wire rope (91) with connecting portion (12)；
Second oil pumping component (30), be connected by the second steel wire rope (92) with connecting portion (12), and first pumps component (20) and the
Two oil pumping component (30) are symmetricly set on the front and rear both sides of the direction of motion of connecting portion (12), and the first oil pumping component (20) includes the
One sucker rod (25), the second oil pumping component (30) includes the second sucker rod (35), the first sucker rod (25) and the second sucker rod
(35) weight is identical, and the first sucker rod (25) and the second sucker rod (35) vertically pump, and this first
The direction of motion of sucker rod (25) is opposite with the direction of motion of second sucker rod (35).
2. chain drive pumping unit according to claim 1, it is characterised in that first oil pumping component (20) including first around
Line wheel (23) and the first suspension sheave (24), one end of the first steel wire rope (91) are fixedly connected with connecting portion (12), the first steel wire rope
(91) the other end is coiled on the first reel (23), and the first suspension sheave (24) is coaxially fixed on the first reel (23),
And the first suspension sheave (24) can be rotated coaxially with the first reel (23), coiling is provided with use on first suspension sheave (24)
In the first beam hanger steel wire rope (93) for connecting the first sucker rod (25).
3. chain drive pumping unit according to claim 2, it is characterised in that first oil pumping component (20) also includes second
Reel (21) and the 3rd reel (22), the other end of the first steel wire rope (91) sequentially pass through the second reel (21) and the 3rd
Reel (22) is simultaneously coiled on the first reel (23), the rotation direction of the second reel (21) and the 3rd reel (22)
Rotation direction is conversely, the rotation direction of the 3rd reel (22) is identical with the rotation direction of the first reel (23).
4. chain drive pumping unit according to claim 1, it is characterised in that the first oil pumping component (20) and the second oil pumping component
(30) structure is identical, and second oil pumping component (30) includes the 4th reel (33) and the second suspension sheave (34), the second steel wire
One end of rope (92) is fixedly connected with connecting portion (12), and the other end of the second steel wire rope (92) is coiled in the 4th reel (33)
On, the second suspension sheave (34) is coaxially fixed on the 4th reel (33), and the second suspension sheave (34) can be with the 4th coiling
Wheel (33) is rotated coaxially, and the second beam hanger steel wire rope for connecting the second sucker rod (35) is provided with second suspension sheave (34)
(94)。
5. chain drive pumping unit according to claim 4, it is characterised in that second oil pumping component (30) also includes the 5th
Reel (31) and the 6th reel (32), the other end of the second steel wire rope (92) sequentially pass through the 5th reel (31) and the 6th
Reel (32) is simultaneously coiled on the 4th reel (33), rotation direction and the 6th reel (32) of the 5th reel (31)
Rotation direction is conversely, the rotation direction of the 6th reel (32) is identical with the rotation direction of the 4th reel (33).
6. chain drive pumping unit according to any one of claim 1 to 5, it is characterised in that the company of being provided with chain (11)
Chain link section (13), the side of connection chain link (13) with drive component (10) positioned at the same side connecting portion (12) including connection ring,
The connection ring can be rotatably arranged in the opposite side of connection chain link (13), one end of the first steel wire rope (91) and the second steel wire rope
(92) one end is each attached in the connection ring.
7. chain drive pumping unit according to claim 6, it is characterised in that connection chain link (13) is provided through two sides
Rotate through hole, the axis of the rotation through hole is vertical with the direction of motion of connection chain link (13), connecting portion (12) also including bar with
Fixed termination, the two ends of the bar connect the fixation termination and the connection ring respectively, and the bar is articulated with the rotation through hole, should
Fixed termination is located at the side of connection chain link (13), and the connection ring is located at the opposite side of connection chain link (13).
8. chain drive pumping unit according to claim 6, it is characterised in that drive component (10) also includes：
Chain driving wheel (14) and chain driven pulley (15), chain (11) is around being located at chain driving wheel (14) and chain driven pulley
(15) on；
Belt pulley (16), is co-axially located on chain driving wheel (14), and belt pulley (16) can drive chain driving wheel (14) to turn
It is dynamic；
Motor (17), by driving belt and belt pulley (16) drive connection.
9. chain drive pumping unit according to claim 8, it is characterised in that driving belt include the first driving belt (95) and
Second driving belt (96), drive component (10) also includes decelerator (18), and motor (17) is by the first driving belt
(95) input shaft with decelerator (18) is connected, and the output shaft of decelerator (18) passes through the second driving belt (96) and belt pulley
(16) connect.
10. chain drive pumping unit according to claim 6, it is characterised in that the chain drive pumping unit also includes support component
(40), drive component (10), the first oil pumping component (20) and the second oil pumping component (30) is arranged in support component (40).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710299982.2A CN106869870A (en) | 2017-04-28 | 2017-04-28 | Chain drive pumping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710299982.2A CN106869870A (en) | 2017-04-28 | 2017-04-28 | Chain drive pumping unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106869870A true CN106869870A (en) | 2017-06-20 |
Family
ID=59161428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710299982.2A Pending CN106869870A (en) | 2017-04-28 | 2017-04-28 | Chain drive pumping unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106869870A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200975336Y (en) * | 2006-11-27 | 2007-11-14 | 马庆囝 | Double well single power oil pumping machine |
| CN101187304A (en) * | 2007-11-20 | 2008-05-28 | 长庆石油勘探局 | High reliability double well pumping machine |
| CN202228047U (en) * | 2011-09-02 | 2012-05-23 | 陕西中新石油设备制造有限公司 | Novel six-rod linkage cluster well pumping unit |
| CN202325429U (en) * | 2011-11-25 | 2012-07-11 | 王维昌 | Long-stroke dual-well oil pumping unit |
| CN202745828U (en) * | 2012-08-17 | 2013-02-20 | 苗在朝 | Twin-well pumping machine without walking beam |
| CN206722808U (en) * | 2017-04-28 | 2017-12-08 | 中国石油大学(北京) | The horizontal chained oil pumper of self balanced energy saving |
-
2017
- 2017-04-28 CN CN201710299982.2A patent/CN106869870A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200975336Y (en) * | 2006-11-27 | 2007-11-14 | 马庆囝 | Double well single power oil pumping machine |
| CN101187304A (en) * | 2007-11-20 | 2008-05-28 | 长庆石油勘探局 | High reliability double well pumping machine |
| CN202228047U (en) * | 2011-09-02 | 2012-05-23 | 陕西中新石油设备制造有限公司 | Novel six-rod linkage cluster well pumping unit |
| CN202325429U (en) * | 2011-11-25 | 2012-07-11 | 王维昌 | Long-stroke dual-well oil pumping unit |
| CN202745828U (en) * | 2012-08-17 | 2013-02-20 | 苗在朝 | Twin-well pumping machine without walking beam |
| CN206722808U (en) * | 2017-04-28 | 2017-12-08 | 中国石油大学(北京) | The horizontal chained oil pumper of self balanced energy saving |
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Application publication date: 20170620 |