CN104948141B - A kind of same well production-injection device - Google Patents
A kind of same well production-injection device Download PDFInfo
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- CN104948141B CN104948141B CN201510306138.9A CN201510306138A CN104948141B CN 104948141 B CN104948141 B CN 104948141B CN 201510306138 A CN201510306138 A CN 201510306138A CN 104948141 B CN104948141 B CN 104948141B
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Abstract
The invention discloses a kind of same well production-injection device, including：Lift tubing string and waterflood path；The two-way combination pump of dynamic cylinder, including the first pump and the second pump, the dynamic cylinder of the two-way combination pump of dynamic cylinder are connected by rod string with beam-pumping unit；First pump is connected with lifting tubing string by ball-and-seat；Second pump is connected with waterflood path by ball-and-seat；Oil water separator, for separating oil to generate the first liquid, and second liquid；Oil water separator includes being used for the entrance for inputting oil, the central outlet for exporting the first liquid, and for exporting the lower outlet of second liquid；Wherein, entrance connects with oil channel；Central outlet is connected with the first pump by ball-and-seat；Lower outlet is connected with the second pump by ball-and-seat；Device provided by the invention is to solve in the prior art using pump motor as power, the technical problem that existing power consumption is high and cost is high.Realize the technique effect for reducing oil recovery energy consumption and reducing extracting device of oil cost.
Description
Technical field
The present invention relates to technical field of petroleum extraction, more particularly to a kind of same well production-injection device.
Background technology
Moisture content into the water flood field of development late stage constantly rises, and generally reaches more than 90%.Due to the lifting of water
It is required to consume electric energy and chemical agent with processing, therefore cost is improved to such oil field development.In addition with block of cells and
The exploitation of outlying well, the water on stratum are also required to supplement.
It is domestic existing, there are oil-submersible electric pump lifting augmented injection method and series connection combination pump to the development technology in the above-mentioned type oil field
Method, the pump power of such method is mainly by pump motor, and motor need to consume substantial amounts of energy, and cost is also higher, so such
Development technology has certain limitation.
That is, same well production-injection device of the prior art uses pump motor power consumption height and cost to be present as power
High technical problem.
The content of the invention
The present invention solves same well production-injection device of the prior art using pump electricity by providing a kind of same well production-injection device
The technical problem that power consumption is high and cost is high be present as power in machine.
The embodiment of the present application provides following technical scheme：
A kind of same well production-injection device, the same well production-injection device is connected with beam-pumping unit carries out same well production-injection, its feature
It is, the same well production-injection device includes：
Lift tubing string and waterflood path；
The two-way combination pump of dynamic cylinder, including the first pump and the second pump, the dynamic cylinder of the dynamic two-way combination pump of cylinder pass through sucker rod
Post is connected with the beam-pumping unit；First pump is connected with the lifting tubing string by ball-and-seat；Second pump and institute
Waterflood path is stated to connect by ball-and-seat；
Oil water separator, for separating mixed oil liquid to generate the first liquid, and water content is higher than first liquid
Second liquid；The oil water separator includes being used to input the entrance of the mixed oil liquid, for exporting first liquid
Central outlet, and for exporting the lower outlet of the second liquid；Wherein, the entrance connects with oil channel；The center
Outlet is connected with first pump by ball-and-seat；The lower outlet is connected with second pump by ball-and-seat；
Wherein, when the beam-pumping unit pulls the dynamic cylinder to move upwards by the rod string, described first
It is in negative pressure in pump and in second pump, and then is extracted the mixed oil liquid of producing horizon to described by the oil channel
To isolate first liquid and the second liquid, first liquid is entered oil water separator by the central outlet
First pump, the second liquid enter second pump by the lower outlet；When the beam-pumping unit pass through it is described
When the rod string promotion dynamic cylinder moves downward, it is pressurized in first pump and in second pump, promotion first liquid
Body is flowed out by the lifting tubing string, and promotes the second liquid to inject water filling layer by the waterflood path.
Optionally, the same well production-injection device, in addition to：Binary channels excessively stream bridge, the first of the binary channels excessively stream bridge are logical
Road is the oil channel, and the second channel of the binary channels excessively stream bridge is the waterflood path.
Optionally, the same well production-injection device, in addition to：Plug-in strap anchoring packer, with the waterflood path and institute
Oil channel connection is stated, for separating the producing horizon and the water filling layer.
Optionally, the same well production-injection device, in addition to：Rubber bowl is held in the palm, is fixed on the plug-in strap anchoring packer
Upside, to prevent sandstone from blocking the plug-in strap anchoring packer.
Optionally, the same well production-injection device, in addition to：Anchor, it is connected with the lifting tubing string, it is described for preventing
Lift the shake of tubing string.
Optionally, the oil water separator is oil-water separator.
Optionally, valve is installed, the valve is between the central outlet and first pump on the dynamic cylinder
The ball-and-seat.
The one or more technical schemes provided in the embodiment of the present application, have at least the following technical effects or advantages：
1st, the same well production-injection device that the embodiment of the present application provides, effectively utilize existing common beam oil pumper conduct and adopt
Oily power, profit is separated by oil water separator, then pull the dynamic cylinder of underground two-way compound by ground routine beam-pumping unit
Pump realizes that low aqueous oil gives rise to ground with well, and the liquid of High water cut supercharging note is arrived with water filling layer needed for well.On the one hand use
Common beam oil pumper substitutes pump motor, reduces the energy consumption of oil recovery, on the other hand, reduces production cost.
2nd, the same well production-injection device that the embodiment of the present application provides, recovered the oil using plug-in strap anchoring packer to separate sealing
Layer and water filling layer, effectively prevent the infiltration of water filling layer and producing horizon.
3rd, the same well production-injection device that the embodiment of the present application provides, using anchor, it is connected with the lifting tubing string, to prevent
The shake of the lifting tubing string, avoids device damage caused by shaking, improves device reliability.
4th, the same well production-injection device that the embodiment of the present application provides, support is fixed in the upside of the plug-in strap anchoring packer
Rubber bowl, to prevent sandstone from blocking the plug-in strap anchoring packer, improve device reliability.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only embodiments of the invention, for ability
For the those of ordinary skill of domain, on the premise of not paying creative work, it can also be obtained according to the accompanying drawing of offer other
Accompanying drawing.
Fig. 1 is the structural representation that same well production-injection device adopts in bet in the embodiment of the present application；
Fig. 2 is that same well production-injection device adopts the structural representation poured down in the embodiment of the present application.
Embodiment
The present invention solves same well production-injection device of the prior art using pump electricity by providing a kind of same well production-injection device
The technical problem that power consumption is high and cost is high be present as power in machine.Realizing reduces oil recovery energy consumption and reduction extracting device of oil cost
Technique effect.
In order to solve the above technical problems, the general thought that the embodiment of the present application provides technical scheme is as follows：
A kind of same well production-injection device, it is characterised in that the same well production-injection device is connected with beam-pumping unit carries out same well
Adopt note, it is characterised in that the same well production-injection device includes：
Lift tubing string and waterflood path；
The two-way combination pump of dynamic cylinder, including the first pump and the second pump, the dynamic cylinder of the dynamic two-way combination pump of cylinder pass through sucker rod
Post is connected with the beam-pumping unit；First pump is connected with the lifting tubing string by ball-and-seat；Second pump and institute
Waterflood path is stated to connect by ball-and-seat；
Oil water separator, for separating mixed oil liquid to generate the first liquid, and water content is higher than first liquid
Second liquid；The oil water separator includes being used to input the entrance of the mixed oil liquid, for exporting first liquid
Central outlet, and for exporting the lower outlet of the second liquid；Wherein, the entrance connects with oil channel；The center
Outlet is connected with first pump by ball-and-seat；The lower outlet is connected with second pump by ball-and-seat；
Wherein, when the beam-pumping unit pulls the dynamic cylinder to move upwards by the rod string, described first
It is in negative pressure in pump and in second pump, and then is extracted the mixed oil liquid of producing horizon to described by the oil channel
To isolate first liquid and the second liquid, first liquid is entered oil water separator by the central outlet
First pump, the second liquid enter second pump by the lower outlet；When the beam-pumping unit pass through it is described
When the rod string promotion dynamic cylinder moves downward, it is pressurized in first pump and in second pump, promotion first liquid
Body is flowed out by the lifting tubing string, and promotes the second liquid to inject water filling layer by the waterflood path.
By the above as can be seen that the same well production-injection device, effectively utilizes existing common beam oil pumper
As oil recovery power, profit is separated by oil water separator, then pulls the dynamic cylinder of underground double by ground routine beam-pumping unit
Realize that low aqueous oil gives rise to ground with well to combination pump, and the liquid of High water cut supercharging note is arrived with water filling layer needed for well.One
Aspect substitutes pump motor with common beam oil pumper, reduces the energy consumption of oil recovery, on the other hand, reduces production cost.
In order to be better understood from above-mentioned technical proposal, below in conjunction with Figure of description and specific embodiment to upper
State technical scheme to be described in detail, it should be understood that the specific features in the embodiment of the present invention and embodiment are to the application skill
The detailed description of art scheme, rather than the restriction to technical scheme, in the case where not conflicting, the embodiment of the present application
And the technical characteristic in embodiment can be mutually combined.
Embodiment one
In the present embodiment, there is provided a kind of same well production-injection device, the same well production-injection device are connected with beam-pumping unit 1
Same well production-injection is carried out, refer to Fig. 1, Fig. 1 is the structural representation that same well production-injection device adopts in bet in the embodiment of the present application.Such as
Shown in Fig. 1, the same well production-injection device includes：
Lift tubing string and waterflood path；
The two-way combination pump 2 of dynamic cylinder, including the first pump and the second pump, the dynamic cylinder of the dynamic two-way combination pump 2 of cylinder pass through oil pumping
Roofbolt is connected with the beam-pumping unit 1；First pump is connected with the lifting tubing string by ball-and-seat；Second pump with
The waterflood path is connected by ball-and-seat；
Oil water separator 3, for separating mixed oil liquid to generate the first liquid, and water content is higher than first liquid
Second liquid；The oil water separator 3 includes being used to input the entrance of the mixed oil liquid, for exporting first liquid
Central outlet, and for exporting the lower outlet of the second liquid；Wherein, the entrance connects with oil channel；The center
Outlet is connected with first pump by ball-and-seat；The lower outlet is connected with second pump by ball-and-seat；
Wherein, when the beam-pumping unit 1 pulls the dynamic cylinder to move upwards by the rod string, described first
Is in negative pressure in pump and in second pump, so by the oil channel by the mixed oil liquid of producing horizon 101 extract to
To isolate first liquid and the second liquid, first liquid is gone out the oil water separator 3 by the center
Mouth enters first pump, and the second liquid enters second pump by the lower outlet；When the beam-pumping unit 1 is logical
When crossing the rod string and promoting the dynamic cylinder to move downward, it is pressurized in first pump and in second pump, described in promotion
First liquid is flowed out by the lifting tubing string, and promotes the second liquid to inject water filling layer 102 by the waterflood path.
In specific implementation process, according to water filling layer 102 and the difference of the position of producing horizon 101, the same well production-injection dress
Put can be divided into shown in Fig. 1 adopting bet mo(u)ld top half and Fig. 2 shown in adopt the type of pouring down.
Below by the structure for introducing same well production-injection device respectively, same well production-injection device installation, adopt bet mo(u)ld top half adopted with well
The operation principle of dispensing device and adopt the operation principle for pouring down type same well production-injection device.
First, the structure of same well production-injection device is introduced.
In the embodiment of the present application, the upper end of the rod string connects the beam-pumping unit 1, and the lower end of beam hanger post connects
The dynamic cylinder of the two-way combination pump 2 of the dynamic cylinder is connect, the dynamic cylinder is the barrel of first pump, while is also described second
The plunger of pump；The dynamic cylinder upper end is consolidated equipped with valve as travelling valve, the barrel of the plunger of first pump and second pump
When calmly, so that the proper rod string drive dynamic cylinder moves upwards, it is in first pump and in second pump
Negative pressure；When the rod string drives the dynamic cylinder to move downward, pressure increases in first pump and in second pump
By force.
In specific implementation process, the model of first pump can be ￠ 44, and the model of second pump can be ￠
70。
In specific implementation process, standing valve of the valve as first pump can be installed on the dynamic cylinder, it is described
The import of standing valve connects with the central outlet of the oil water separator 3, and the valve is also used as the central outlet and institute
The ball-and-seat between the first pump is stated, so that space connects with the central outlet in first pump.The interior sky of second pump
Between, i.e., described dynamic cylinder and the volume space of the shell composition of the dynamic two-way combination pump 2 of cylinder, with the stream oil water separator 3
Lower outlet and waterflood path connect simultaneously.
Further, in order that the same well production-injection device is during oil recovery and water filling, the miscella in device
Liquid, first liquid and the second liquid keep one-way flow, cause various liquid to mix without flowing backwards, if
Put：
First pump is connected with the lifting tubing string by ball-and-seat；Wherein, first pump and the lifting tubing string
Between ball-and-seat only allow liquid to flow into the lifting tubing string from first pump；With by the lifting tubing string by described the
One liquid is extracted into ground；
Second pump is connected with the waterflood path by ball-and-seat；Wherein, second pump and the waterflood path
Between ball-and-seat only allow liquid to flow into the waterflood path from second pump；With by the waterflood path by described
Two liquid are injected into the water filling layer.
The central outlet is connected with first pump by ball-and-seat；Wherein, the central outlet and first pump
Between ball-and-seat only allow liquid to flow into first pump from the oil water separator；
The lower outlet is connected with second pump by ball-and-seat；Wherein, between the lower outlet and second pump
Ball-and-seat only allow liquid to flow into second pump from the oil water separator.
In the embodiment of the present application, the oil water separator 3 can be oil-water separator, i.e., when the mixed oil liquid
When being pumped into the oil water separator 3, the oil water separator 3 rotates, to isolate first liquid and the second liquid.
Specifically, first liquid can be water content be less than 10% fluid, the second liquid can be containing
Water is higher than 95% fluid.
Certainly, in specific implementation process, the oil water separator 3 can also be other separators, and this is not restricted.
In the embodiment of the present application, the same well production-injection device, can also include：Binary channels excessively stream bridge 4, the binary channels
The first passage of excessively stream bridge 4 is the oil channel, and the second channel of the binary channels excessively stream bridge is the waterflood path.
Specifically, when described device is adopts bet mo(u)ld top half, the waterflood path of the binary channels excessively stream bridge 4 goes out
Mouth is in water filling layer above；The entrance of the oil channel of the binary channels excessively stream bridge 4 is positioned at lower section producing horizon；When described
When device pours down type to adopt, the outlet of the waterflood path of the binary channels excessively stream bridge 4 is in underlying water filling layer；Institute
The entrance of the oil channel of binary channels excessively stream bridge 4 is stated in producing horizon above.
Specifically, the oil channel and the waterflood path are isolated by the binary channels excessively stream bridge 4, avoided
On the basis of the mixing of the second liquid in the mixed oil liquid and the waterflood path in the oil channel, just
In the installation of the oil channel and the waterflood path.
In the embodiment of the present application, the same well production-injection device, can also include：Plug-in strap anchoring packer 5, it is described
Plug-in strap anchoring packer 5 is connected with the waterflood path and the oil channel, for separating and sealing the producing horizon
With the water filling layer.Avoid the Liquid Penetrant of the producing horizon and the water filling layer.
In the embodiment of the present application, the same well production-injection device, can also include：Rubber bowl 6 is held in the palm, is fixed on the insertion
Upside of the formula with anchoring packer 5, to prevent sandstone from blocking the plug-in strap anchoring packer 5, improve device reliability.
In the embodiment of the present application, the same well production-injection device, can also include：Anchor 7, connect with the lifting tubing string
Connect, for preventing shake and the wriggling of the lifting tubing string, avoid device damage caused by shaking, improve device reliability.
Next, introduce the installation of same well production-injection device.
The installation of the same well production-injection device at least divides three step working procedures：
The first step, first the plug-in strap anchoring packer 5 is relied on predetermined need are arrived under the tubing string inserted before
The position to be sealed off, then suppress from ground by tubing string passage, set and plug-in strap anchoring packer 5 described in grappling.
Second step, gone into the well successively installation according to following sequencings：The seal pipe of the plug-in strap anchoring packer 5,
The support rubber bowl 6, the binary channels excessively stream bridge 4, the oil water separator 3, the two-way combination pump 2 of the dynamic cylinder, the oil on pump
Pipe anchor and oil pipe to well head tubing hanger.
3rd step, rod string described in tripping in, the bottom of the rod string and the institute of the dynamic two-way combination pump 2 of cylinder
Cylinder connection is stated, is connected by supporting disconnecting apparatus joint.
Subsequently, the operation principle for adopting bet mo(u)ld top half same well production-injection device is introduced.
When the beam-pumping unit 1 on ground pulls the rod string in well to do upward motion, under rod string
End pulls the dynamic cylinder of the dynamic two-way combination pump 2 of cylinder to move up fluid column on lifting pump simultaneously.Now, first pump and described
There is negative pressure to be formed in the cavity of second pump.
Under negative-pressure ward effect, the ball-and-seat between first pump and the central outlet is opened, first pump
Ball-and-seat between the lifting tubing string is closed；Ball-and-seat between second pump and the lower outlet is opened, and described the
Ball-and-seat between two pumps and the waterflood path is closed.
Under negative-pressure ward effect, the producing horizon 101 that the dynamic two-way combination pump 2 of cylinder is pointed to lower section produces suction, mixes
Fluid is closed under suction, passes sequentially through the insertion of the central passage, the packer of the plug-in strap anchoring packer 5
After the central tube of seal pipe and the support rubber bowl 6, the outer tunnel of the binary channels excessively stream bridge 4, i.e. oil channel, then enter are flowed into
The heap-type cyclonic separation chamber for entering the rotary type oil separator carries out eddy flow, and the rotary type oil separator is due to suction
Effect, adds the flow velocity that the mixed oil liquid enters the oil water separator, and the increase of flow velocity improves the mixed oil liquid
Rotary speed in the oil water separator, the mixed oil liquid by cyclonic separation due to the effect of centrifugal force and gravity,
The first liquid that the water content of low-density is low is pumped into the chamber of first pump from the ball-and-seat of the central outlet；High density
The high second liquid of water content be rotated down ball-and-seat suction second pump that deposition passes through the lower outlet from periphery
In chamber.
When the beam-pumping unit 1 on ground promotes the rod string in well to move downward, under rod string
End promotes the dynamic cylinder of the dynamic two-way combination pump 2 of cylinder to move down, now, the cavity internal pressure of first pump and second pump
Strong increase.
Under pushed at high pressure effect, the ball-and-seat between first pump and the central outlet is closed, first pump
Ball-and-seat between the lifting tubing string is opened；Ball-and-seat between second pump and the lower outlet is closed, and described the
Ball-and-seat between two pumps and the waterflood path is opened.
Under pushed at high pressure effect, chamber of first liquid by the ball-and-seat for lifting pipeline from first pump
Interior is discharged in lifting tubing string and gives rise to ground；Second liquid is entered described double by the ball-and-seat of the waterflood path simultaneously
The central passage of passage excessively stream bridge 4, i.e., described waterflood path, it is then exhausted from water filling layer 102 above.
Repeat the above steps, realize and lasting adopt bet mo(u)ld top half same well production-injection.
Finally, the operation principle adopted and pour down type same well production-injection device is introduced.
When the beam-pumping unit 1 on ground pulls the rod string in well to do upward motion, under rod string
End pulls the dynamic cylinder of the dynamic two-way combination pump 2 of cylinder to move up fluid column on lifting pump simultaneously.Now, first pump and described
There is negative pressure to be formed in the cavity of second pump.
Under negative-pressure ward effect, the ball-and-seat between first pump and the central outlet is opened, first pump
Ball-and-seat between the lifting tubing string is closed；Ball-and-seat between second pump and the lower outlet is opened, and described the
Ball-and-seat between two pumps and the waterflood path is closed.
Under negative-pressure ward effect, the producing horizon 101 that the dynamic two-way combination pump 2 of cylinder is pointed to top produces suction, mixing
Fluid is under suction, by the outer tunnel of the binary channels excessively stream bridge 4, i.e. oil channel, into the rotary profit
The heap-type cyclonic separation chamber of separator carries out eddy flow, and the mixed oil liquid is by cyclonic separation due to centrifugal force and the work of gravity
With the first liquid that the water content of low-density is low is pumped into the chamber of first pump from the ball-and-seat of the central outlet；It is high
The second liquid that the water content of density is high is rotated down ball-and-seat suction described second of the deposition by the lower outlet from periphery
In the chamber of pump.
When the beam-pumping unit 1 on ground promotes the rod string in well to move downward, under rod string
End promotes the dynamic cylinder of the dynamic two-way combination pump 2 of cylinder to move down, now, the cavity internal pressure of first pump and second pump
Strong increase.
Under pushed at high pressure effect, the ball-and-seat between first pump and the central outlet is closed, first pump
Ball-and-seat between the lifting tubing string is opened；Ball-and-seat between second pump and the lower outlet is closed, and described the
Ball-and-seat between two pumps and the waterflood path is opened.
Under pushed at high pressure effect, chamber of first liquid by the ball-and-seat for lifting pipeline from first pump
Interior is discharged in lifting tubing string and gives rise to ground；Second liquid is entered described double by the ball-and-seat of the waterflood path simultaneously
The central passage of passage excessively stream bridge 4, i.e., described waterflood path, then pass sequentially through the central tube of the support rubber bowl 6, the packing
After the insertion seal pipe of device and the central passage of the plug-in strap anchoring packer 5, underlying water filling layer 102 is injected.
Repeat the above steps, realize that lasting adopting pours down type same well production-injection.
Technical scheme in above-mentioned the embodiment of the present application, at least has the following technical effect that or advantage：
1st, the same well production-injection device that the embodiment of the present application provides, effectively utilize existing common beam oil pumper conduct and adopt
Oily power, profit is separated by oil water separator, then pull the dynamic cylinder of underground two-way compound by ground routine beam-pumping unit
Pump realizes that low aqueous oil gives rise to ground with well, and the liquid of High water cut supercharging note is arrived with water filling layer needed for well.On the one hand use
Common beam oil pumper substitutes pump motor, reduces the energy consumption of oil recovery, on the other hand, reduces production cost.
2nd, the same well production-injection device that the embodiment of the present application provides, recovered the oil using plug-in strap anchoring packer to separate sealing
Layer and water filling layer, effectively prevent the infiltration of water filling layer and producing horizon.
3rd, the same well production-injection device that the embodiment of the present application provides, using anchor, it is connected with the lifting tubing string, to prevent
The shake of the lifting tubing string, avoids device damage caused by shaking, improves device reliability.
4th, the same well production-injection device that the embodiment of the present application provides, support is fixed in the upside of the plug-in strap anchoring packer
Rubber bowl, to prevent sandstone from blocking the plug-in strap anchoring packer, improve device reliability.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make other change and modification to these embodiments.So appended claims be intended to be construed to include it is excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (7)
1. a kind of same well production-injection device, the same well production-injection device is connected with beam-pumping unit carries out same well production-injection, and its feature exists
In the same well production-injection device includes：
Lift tubing string and waterflood path；
The dynamic two-way combination pump of cylinder, including the first pump and the second pump, the dynamic cylinder of the dynamic two-way combination pump of cylinder by rod string with
The beam-pumping unit connection；First pump is connected with the lifting tubing string by ball-and-seat；Second pump and the note
Aquaporin is connected by ball-and-seat；The dynamic cylinder is the pump barrel of first pump, while is also the plunger of second pump；Institute
Cylinder upper end is stated equipped with valve as travelling valve, the pump barrel of the plunger of first pump and second pump is fixed, so that proper
It is in negative pressure in first pump and in second pump when rod string drive dynamic cylinder moves upwards；When described
When the rod string drive dynamic cylinder moves downward, pressure strengthens in first pump and in second pump；
Oil water separator, for separating mixed oil liquid to generate the first liquid, and water content is higher than the second of first liquid
Liquid；The oil water separator includes being used to input the entrance of the mixed oil liquid, the center for exporting first liquid
Outlet, and for exporting the lower outlet of the second liquid；Wherein, the entrance connects with oil channel；The central outlet
Connected with first pump by ball-and-seat；The lower outlet is connected with second pump by ball-and-seat；
Wherein, when the beam-pumping unit pulls the dynamic cylinder to move upwards by the rod string, in first pump
Be in negative pressure in second pump, and then the mixed oil liquid of producing horizon is extracted to the profit by the oil channel
To isolate first liquid and the second liquid, first liquid passes through described in the central outlet entrance separator
First pump, the second liquid enter second pump by the lower outlet；When the beam-pumping unit passes through the oil pumping
When the roofbolt promotion dynamic cylinder moves downward, it is pressurized in first pump and in second pump, promotion first liquid leads to
The lifting tubing string outflow is crossed, and promotes the second liquid to inject water filling layer by the waterflood path.
2. same well production-injection device as claimed in claim 1, it is characterised in that also include：
Binary channels excessively stream bridge, the first passage of the binary channels excessively stream bridge is the oil channel, the binary channels excessively stream bridge
Second channel is the waterflood path.
3. same well production-injection device as claimed in claim 1, it is characterised in that also include：
Plug-in strap anchoring packer, be connected with the waterflood path and the oil channel, for separate the producing horizon and
The water filling layer.
4. same well production-injection device as claimed in claim 3, it is characterised in that also include：
Rubber bowl is held in the palm, the upside of the plug-in strap anchoring packer is fixed on, to prevent sandstone from blocking the plug-in strap anchor
Determine packer.
5. same well production-injection device as claimed in claim 1, it is characterised in that also include：
Anchor, it is connected with the lifting tubing string, for preventing the shake of the lifting tubing string.
6. same well production-injection device as claimed in claim 1, it is characterised in that the oil water separator separates for rotational flow oil-water
Device.
7. same well production-injection device as claimed in claim 1, it is characterised in that valve, the valve are provided with the dynamic cylinder
For the ball-and-seat between the central outlet and first pump.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510306138.9A CN104948141B (en) | 2015-06-05 | 2015-06-05 | A kind of same well production-injection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510306138.9A CN104948141B (en) | 2015-06-05 | 2015-06-05 | A kind of same well production-injection device |
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| CN104948141A CN104948141A (en) | 2015-09-30 |
| CN104948141B true CN104948141B (en) | 2017-12-05 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106763773B (en) * | 2015-11-19 | 2018-01-26 | 中国石油天然气集团公司 | Sand-proof device for three phase separator |
| CN108071376B (en) * | 2016-11-17 | 2020-10-09 | 中国石油天然气股份有限公司 | Injection and production string in coal-bed gas well |
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| CN104948141A (en) | 2015-09-30 |
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