CN201865651U - Enclosed oilfield water injection device without tank for injecting mixed fresh water and sewage water - Google Patents
Enclosed oilfield water injection device without tank for injecting mixed fresh water and sewage water Download PDFInfo
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- CN201865651U CN201865651U CN2010206130114U CN201020613011U CN201865651U CN 201865651 U CN201865651 U CN 201865651U CN 2010206130114 U CN2010206130114 U CN 2010206130114U CN 201020613011 U CN201020613011 U CN 201020613011U CN 201865651 U CN201865651 U CN 201865651U
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- water
- pump
- clear water
- sewage
- pipeline
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Abstract
The utility model discloses an enclosed oilfield water injection device without a tank for injecting mixed fresh water and sewage water. The enclosed oilfield water injection device comprises a sewage water lifting pump, a fresh water source pump, a fresh water lifting pump, a water injection pump, frequency changers and a control system, wherein the control system comprises a controller; the frequency changers comprise a fresh water source pump frequency changer, a fresh water lifting pump frequency changer, a sewage water lifting pump frequency changer and a water injection pump frequency changer, which are respectively used for controlling speeds of the fresh water source pump, the fresh water lifting pump, the sewage water lifting pump and the water injection pump according to output signals of the controller; an outlet pipeline of the fresh water lifting pump is connected with an outlet pipeline of the sewage water lifting pump in parallel and then is connected with the water injection pump in series through a pipeline; a branch pipeline is connected on a pipeline between the fresh water source pump and the fresh water lifting pump in parallel; and a fresh water tank is arranged on the branch pipeline. The device can effectively prevent water pollution, meets injection demands of various water sources, and meets the demands of different water injection rates.
Description
Technical field
The utility model relates to a kind of oil-field flooding device, particularly a kind of airtight nothing of clear water sewage mixed water injection jar oil-field flooding device.
Background technology
Oil-field flooding is a kind of crucial mining type of China's oil field development, and the purpose of oil-field flooding is to guarantee formation pressure and additional bottom energy, improves oil reservoir rate of oil production and recovery ratio, impels oil well production to go out more crude oil.The oil-field flooding device is the important component part of flood pattern, and along with the continuous adjustment of waterflooding extraction, the oil field block injection allocation water yield and water resource also change thereupon, and therefore the oil-field flooding device that adapts to the different injection demand being set is the important step of oil-field flooding.In addition, oil-field flooding is because the caused infringement of water quality comprises two Fundamentals: the lithology on water filling stratum self and its contained fluid behaviour; Inject the water quality of water.The former is an objective reality, is the latency that causes formation damage, and the latter brings out the external factor that formation damage takes place, and can make great efforts to control by subjectivity.Therefore, the control injection water quality, adopting reasonable water injection intensity is to reduce the key problem in technology of water filling infringement.
Fig. 1 is the structural representation of prior art oil-field flooding device, and as shown in Figure 1, traditional oil-field flooding device comprises water injecting pump 11, water injecting pump motor 12, booster pump 13, booster motor 14, water pot 15.Pipeline between the inlet of the outlet of water pot 15 and water injecting pump 11 is provided with booster pump 13, is provided with bypass valve 17 between booster pump water inlet pipe and the outlet conduit, is used for when booster pump 13 is not worked, and injects water and enters water injecting pump 11 from water pot 15 through bypass 17.Be provided with return flow line 16 between the outlet of water injecting pump 11 and the water pot 15, when pump startup or shutdown, the water yield that flows out from water injecting pump 11 outlets is recovered in the water pot 15 through reflux line 16.When the injection pipe network more complicated of oil-field flooding device, after injecting water water inlet jar 15, be injected into booster pump 13, water injecting pump 11 and pipeline again, the pressure loss is bigger like this, is unfavorable for saving the energy; And water is long in 15 storage times of water pot when injecting, and airborne oxygen is dissolved in injection water, causes the injection water bacteria to exceed standard easily, worsens water quality.
In addition, though the existing form of not having jar water filling of bringing into use of existing oil-field flooding device, prevented the phenomenon generation of water quality deterioration, general but these do not have jar water filling devices only at the setting of a certain water source, can not adapt to the demand of multiple water source injection and the demand of different injection amount.
The utility model content
After the purpose of this utility model is to provide a kind of outlet conduit based on the clear water lift pump to converge with the outlet conduit of sewage pump is in parallel, the airtight nothing of the clear water sewage mixed water injection of connecting with water injecting pump by pipeline jar oil-field flooding device again, to prevent water pollution, the demand that multiple water source injects can be adapted to simultaneously, the demand of different injection amount can be satisfied.
The airtight nothing of clear water sewage mixed water injection of the present utility model jar oil-field flooding device comprises sewage pump, clear water water source pump, clear water lift pump, water injecting pump, frequency converter and control system;
Control system comprises a controller;
Frequency converter comprises clear water water source pump frequency conversion device, clear water lift pump frequency converter, sewage pump frequency converter and water injecting pump frequency converter, is respectively applied for the speed according to output signal control clear water water source pump, clear water lift pump, sewage pump and the water injecting pump of controller;
The outlet conduit of clear water lift pump is connected in series by pipeline and water injecting pump with after the outlet conduit of sewage pump is in parallel again;
On the pipeline between clear water water source pump and the clear water lift pump, be arranged in parallel a lateral, lateral is provided with a clear water jar.
The airtight nothing of clear water sewage mixed water injection of the present utility model jar oil-field flooding device, clear water water source pump frequency conversion device is according to the rotating speed of the output signal of controller control clear water water source pump, and the flow and the pressure of the liquid level of clear water jar, water that the clear water lift pump injects are controlled; Clear water lift pump frequency converter, sewage pump frequency converter and water injecting pump frequency converter are according to the rotating speed of output signal control clear water lift pump, sewage pump and the water injecting pump of controller, thereby realization is to the flow of the water of water injecting pump input, output and the control of pressure, the flow of the water of the output of flow, pressure and the water injecting pump of the water of each lift pump output of final realization, the dynamic equilibrium of pressure make system reach steady water filling.
The airtight nothing jar oil-field flooding device of this clear water sewage mixed water injection does not adopt the sewage jar, and whole the injecting process is to carry out under airtight environment, has avoided airborne oxygen to be dissolved in and has injected sewage and cause the sewage bacterium to exceed standard, worsen the phenomenon of water quality; Simultaneously, clear water sewage mixed water injection, and the clear water water source directly injects or inject the clear water lift pump through the clear water jar, has adapted to from dissimilar water sources and has injected the requirement of water and the requirement of having satisfied required different injection amount.
Below by the drawings and specific embodiments, the technical solution of the utility model is described in further detail.
Description of drawings
Fig. 1 is the structural representation of prior art oil-field flooding device;
Fig. 2 is the airtight structural representation that does not have jar oil-field flooding device of the utility model embodiment clear water sewage mixed water injection.
The specific embodiment
Fig. 2 is the airtight structural representation that does not have jar oil-field flooding device of the utility model embodiment clear water sewage mixed water injection, as shown in Figure 2, the airtight nothing of a clear water sewage mixed water injection of the present utility model jar oil-field flooding device comprises clear water water source pump 201, clear water lift pump 202, sewage pump 203, water injecting pump 204, frequency converter and control system; Control system comprises a controller 40; Frequency converter comprises clear water water source pump frequency conversion device 301, clear water lift pump frequency converter 302, sewage pump frequency converter 303 and water injecting pump frequency converter 304, is respectively applied for the speed according to output signal control clear water water source pump 201, clear water lift pump 202, sewage pump 203 and the water injecting pump 204 of controller 40; The outlet conduit of clear water lift pump 202 is connected in series by pipeline and water injecting pump 204 after converging with the outlet conduit of sewage pump 203 is in parallel again; On the pipeline between clear water water source pump 201 and the clear water lift pump 202, be arranged in parallel a lateral, lateral is provided with a clear water jar 50.
The airtight nothing of this clear water sewage mixed water injection jar oil-field flooding device does not adopt the sewage jar, and whole the injecting process is to carry out under airtight environment, thereby has avoided airborne oxygen to be dissolved in injecting sewage and cause the sewage bacterium to exceed standard, worsen the phenomenon of water quality; Simultaneously, clear water sewage mixed water injection, and the clear water water source directly injects and/or inject clear water lift pump 202 through clear water jar 50, has adapted to the demand that multiple water source injects demand and satisfied the different injection amount.
More preferably, be to realize the automatic control to oil-field flooding, this clear water sewage mixed water injection airtight do not have jar controller of oil-field flooding device 40 and adopts PLC, intelligence instrument or other can realize Industrial Personal Computer (IPC) any of a locking control method.The inlet duct of water injecting pump 204 is provided with valve 604, flow meter 701 and pressure detecting instrument 801, the outlet conduit of water injecting pump 204 is provided with valve 605, flow meter 702 and pressure detecting instrument 802, above-mentioned each valve, flow meter and pressure detecting instrument link to each other with controller 40 by holding wire, by holding wire each flow meter and the detected measured value of pressure detecting instrument are outputed to controller 40, controller 40 outputs to each valve to control the aperture of each valve with valve control signal; Be respectively arranged with a valve 601 on the outlet conduit of each clear water water source pump 201, thereby can select from one or more clear water water source water filling; Clear water water source pump 201 is provided with valve 602 with the pipeline of clear water lift pump 202, be respectively arranged with valve 606 and valve 607 on the entrance and exit pipeline of the clear water jar 50 that is provided with on the lateral, thereby can select to be input to the mode that again water is transported to clear water lift pump 202 behind the clear water jar 50, the perhaps water flooding regime of dual mode combination to the mode water filling of clear water lift pump 202 or with clear water by clear water water source pump 201 direct transporting water; The water inlet pipe of sewage pump 203 is provided with valve 603.
Each flow meter and pressure detecting instrument are the detecting unit of the control system of this oil-field flooding device in the foregoing description, detecting unit outputs to each measured value by holding wire the controller 40 of control system with the flow measurements and the pressure measuring value of water in detected each pipeline.According to concrete operating mode, controller 40 is set the flow reference value and the pressure reference value of water in each pipeline, ALU in the controller 40 is made comparisons each reference value and corresponding each measured value that receives, obtain corresponding difference and/or difference rate of change, at each measured value, reference value, difference and/or difference rate of change adopt PID control, fuzzy control, neutral net or other intelligence control methods, obtain the control signal of each frequency converter and the control signal of each valve, and the control letter of each frequency converter outputed to corresponding frequency converter controlling the speed of corresponding each pump, the control signal of each valve is outputed to corresponding valve to control the aperture of corresponding each valve.
Clear water water source pump frequency conversion device 301 is according to the control signal of controller 40 outputs, control the speed of each clear water water source pump 201, with the liquid level of further control clear water jar 50 with inject the flow and the pressure of the water of clear water lift pump 202, to realize to the flow of water and the control of pressure in the inlet duct of water injecting pump 204 and the outlet conduit; Sewage pump frequency converter 303 is according to the speed of the control signal control sewage pump 203 of controller 40 outputs.The aperture of corresponding each valve of each valve control signal control of controller 40 output, with further realization to the flow of water and the control of pressure in water injecting pump 204 inlet ducts and the outlet conduit.Thereby realized flow and pressure and the injection flow of water injecting pump 204 outputs and the dynamic equilibrium of pressure of the water of each lift pump output, made system reach steady water filling, the flow and the pressure controlled flexibility of the water that has injected when also having increased oil-field flooding simultaneously.
More preferably; for the flow of the water of the injection of the inlet duct that makes water injecting pump 204 and the lower limit that pressure is higher than setting; and be lower than the higher limit of setting; thereby guarantee the safety of water injecting pump 204 better; satisfy the requirement of normal water filling, the control system of this oil-field flooding device is provided with an interlock protection unit.The force value that flow value that flow meter 701 on the inlet duct of water injecting pump 204 is measured or pressure detecting instrument 801 are measured is lower than the corresponding lower limit of setting; when perhaps being higher than the corresponding higher limit of setting; interlock protection unit output switch control signal is to each pump and valve; close each pump and valve; make whole water filling device out of service, thereby further guarantee the safety of water filling device.This interlock protection unit can be realized by controller 40 usefulness softwares, also can realize by logic control circuit, also can adopt software and logic control circuit to combine and realize.
Further, enter the pump housing in order to prevent the excessive impurity that sewage injection water is carried secretly, cause the damage to pump housing flow passage components, the inlet duct of sewage pump 203 is provided with a strainer 90.
Should be noted that at last: above embodiment only is not intended to limit in order to the explanation the technical solution of the utility model; Although with reference to preferred embodiment the utility model is had been described in detail, those of ordinary skill in the field are to be understood that: still can make amendment or the part technical characterictic is equal to replacement the specific embodiment of the present utility model; And not breaking away from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope that the utility model asks for protection.
Claims (6)
1. the airtight nothing of a clear water sewage mixed water injection jar oil-field flooding device is characterized in that: comprise sewage pump, clear water water source pump, clear water lift pump, water injecting pump, frequency converter and control system;
Described control system comprises a controller;
Described frequency converter comprises clear water water source pump frequency conversion device, clear water lift pump frequency converter, sewage pump frequency converter and water injecting pump frequency converter, is respectively applied for the speed of controlling described clear water water source pump, described clear water lift pump, described sewage pump and described water injecting pump according to the output signal of described controller;
The outlet conduit of described clear water lift pump is connected in series by pipeline and described water injecting pump with after the outlet conduit of described sewage pump is in parallel again;
On the pipeline between described clear water water source pump and the described clear water lift pump, be arranged in parallel a lateral, described lateral is provided with a clear water jar.
2. the airtight nothing of clear water sewage mixed water injection according to claim 1 jar oil-field flooding device is characterized in that: be provided with valve, pressure detecting instrument and flow meter on the inlet duct of described water injecting pump and the outlet conduit;
Each valve, flow meter and pressure detecting instrument link to each other with described controller by holding wire, by holding wire each flow meter and the detected measured value of pressure detecting instrument are outputed to described controller;
Described controller is PLC or intelligence instrument.
3. the airtight nothing of clear water sewage mixed water injection according to claim 1 and 2 jar oil-field flooding device, it is characterized in that: described clear water water source pump is one or more, is used for from one or more clear water water source clear water is transported to described clear water lift pump.
4. the airtight nothing of clear water sewage mixed water injection according to claim 3 jar oil-field flooding device, it is characterized in that: be respectively arranged with a valve on each described clear water water source delivery side of pump pipeline, be provided with a valve on the pipeline between described clear water water source pump and the described clear water lift pump and on the entrance and exit pipeline of described clear water jar.
5. the airtight nothing of clear water sewage mixed water injection according to claim 4 jar oil-field flooding device, it is characterized in that: described control system also comprises an interlock protection unit.
6. the airtight nothing of clear water sewage mixed water injection according to claim 4 jar oil-field flooding device, it is characterized in that: the inlet duct of described sewage pump is provided with a strainer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206130114U CN201865651U (en) | 2010-11-18 | 2010-11-18 | Enclosed oilfield water injection device without tank for injecting mixed fresh water and sewage water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206130114U CN201865651U (en) | 2010-11-18 | 2010-11-18 | Enclosed oilfield water injection device without tank for injecting mixed fresh water and sewage water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201865651U true CN201865651U (en) | 2011-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206130114U Expired - Fee Related CN201865651U (en) | 2010-11-18 | 2010-11-18 | Enclosed oilfield water injection device without tank for injecting mixed fresh water and sewage water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201865651U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107131131A (en) * | 2017-06-08 | 2017-09-05 | 上海创丞科功水利科技有限公司 | A kind of flow equilibrium method of water pump serial-connection system |
| CN109004881A (en) * | 2018-09-21 | 2018-12-14 | 中国科学院电工研究所无锡分所 | Sewage treatment Boosting pumping station energy conservation fuzzy controller |
-
2010
- 2010-11-18 CN CN2010206130114U patent/CN201865651U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107131131A (en) * | 2017-06-08 | 2017-09-05 | 上海创丞科功水利科技有限公司 | A kind of flow equilibrium method of water pump serial-connection system |
| CN107131131B (en) * | 2017-06-08 | 2019-04-26 | 上海创丞科功水利科技有限公司 | A kind of flow equilibrium method of water pump serial-connection system |
| CN109004881A (en) * | 2018-09-21 | 2018-12-14 | 中国科学院电工研究所无锡分所 | Sewage treatment Boosting pumping station energy conservation fuzzy controller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110615 Termination date: 20141118 |
|
| EXPY | Termination of patent right or utility model |