CN102322415A - Wellhead photovoltaic remote-sensing intelligent chemical agent injection pump system and intelligent injection method - Google Patents
Wellhead photovoltaic remote-sensing intelligent chemical agent injection pump system and intelligent injection method Download PDFInfo
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- CN102322415A CN102322415A CN201110265015A CN201110265015A CN102322415A CN 102322415 A CN102322415 A CN 102322415A CN 201110265015 A CN201110265015 A CN 201110265015A CN 201110265015 A CN201110265015 A CN 201110265015A CN 102322415 A CN102322415 A CN 102322415A
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Abstract
The invention relates to a wellhead photovoltaic remote-sensing intelligent chemical agent injection pump system and an intelligent injection method. The wellhead photovoltaic remote-sensing intelligent chemical agent injection pump system comprises the following parts: a solar energy power generation photovoltaic assembly used for converting optical energy into electric energy; storage batteries used for storing and outputting the electric energy from the solar energy power generation photovoltaic assembly; a liquid storage tank used for storing a chemical agent to be injected; a metering pump used for quantificationally outputting the chemical agent from the liquid storage tank so as to perform injection; an inverter used for converting direct current of the storage batteries into alternating current and providing the alternating current to the metering pump; a control device which is electrically connected with the abovementioned parts and used for controlling the startup and the stoppage of the output of the metering pump, and comprises a clock automatic control part and a remote-sensing control part, wherein the control device comprises a temperature control module used for controlling the temperature inside a control system. With the devices integrated in the wellhead photovoltaic remote-sensing intelligent chemical agent injection pump system provided by the invention, the timed, quantitative, automatic, continuous and all-weather injection and unmanned remote-sensing control are realized, the injection effect is guaranteed, the labor intensity of workers and the operation cost are reduced, and the field application effect is obvious.
Description
Technical field
The present invention relates to the field of photovoltaic generation remote sensing automation control filling apparatus; Be specifically related to well head photoelectricity remote sensing intelligence injectant pump system and intelligent charging method; It can be applied to the outlying well in oil field, and particularly power supply such as grassland, desert difficulty, unattended outlying district oil (gas) well chemical agent of annotating automatically uses.
Background technique
At present, along with striding forward fast of the great development step in domestic gas field, gas well exploration, exploitation, the problem that occurs in producing also manifest day by day; Particularly the gas field producing well goes out water problems, after the water outlet of gas well stratum, will reduce gas well deliverability; Reduce the gas reservoir recoverable reserve, increase the production management difficulty, shorten the gas reservoir years of stable production; Reduce gas reservoir recovery, thereby influence the whole development benefit of gas reservoir.Thereby, promote the water drainage-gas recovery technology technology in the gas field and just seem more and more important.Most domestic gas field individual well (especially outlying well) filling is main to be adopted artificial filling or carries out water pumping gas production with the mode of filling car; Ripe automated production equipment does not appear as yet; But because domestic oil gas field well location relatively disperses, and quantity is big again, if all stripper wells carry out the manual work foaming agent of annotating every day; Just need to set up the professional service fleet that ten minutes is huge; There are defectives such as hand labor intensity is big simultaneously, will consume a large amount of energy undoubtedly simultaneously, and make a large amount of exhaust emissionss.Obviously this does not meet industry automation and environmental protection concept.
Summary of the invention
The applicant considers the above-mentioned situation of existing site operation and has developed the present invention.System mainly comprises according to the intelligent injectant pump of well head photoelectricity remote sensing of the present invention: solar photovoltaic assembly, and being used for solar energy converting is electric energy; Storage battery is used for putting aside and exporting the electric energy from solar photovoltaic assembly; Liquid container is used for storing the medicament that will annotate; Metering pump is used for exporting medicament from liquid container quantitatively, thereby annotates; Inverter is used for converting the direct current from storage battery into Ac, and offers said metering pump; Control gear is electrically connected with each part mentioned above, be used for remote sensing, automation control said metering pump output startup and stop; Wherein, said control gear comprises temperature control module, is used for the control system temperature inside.
According to an aspect of the present invention, a kind of intelligent charging method that is used for said well head photoelectricity remote sensing intelligence injectant pump system is provided, has comprised the steps: that a, said control gear judge that whether current pharmaceutical quantities in the said liquid container is less than the low spot threshold value; B, if current pharmaceutical quantities be not less than the low spot threshold value, then said control gear is given an order to said metering pump, carries out performance; C, if current pharmaceutical quantities less than the low spot threshold value, then said control gear is notified said remote monitoring end, in said liquid container, replenishes medicament to remind.
Advantage of the present invention:
System adopts optoelectronic integration remote sensing to control automatically according to the intelligent injectant pump of well head photoelectricity remote sensing of the present invention, by solar panel, battery pack, inverter reliable source of power is provided.Combined controller can be set automatic control motor, switch pump state; Can use the start and stop of wireless communication network signal transmission control pump simultaneously; Realize at regular time and quantity, automatically, continuous and round-the-clock filling, unmanned guard's telecontrol, thereby guaranteed the filling effect, reduced working strength of workers and operating cost; Solved the problem that the desert area day and night temperature is big and north of china in winter is cold through the design temperature control module, effect of field application is remarkable.
Description of drawings
Fig. 1 is the schematic representation of the intelligence of well head photoelectricity remote sensing according to an embodiment of the invention injectant pump system.
Fig. 2 is the schematic representation of the control gear of the intelligence of well head photoelectricity remote sensing according to an embodiment of the invention injectant pump system.
Fig. 3 is the schematic representation of the liquid container of the intelligence of well head photoelectricity remote sensing according to an embodiment of the invention injectant pump system.
Fig. 4 is the schematic representation that is used for the intelligent charging method of well head photoelectricity remote sensing intelligence injectant pump system according to an embodiment of the invention.
Embodiment
To come further to understand the present invention through following description through with reference to above-mentioned accompanying drawing for embodiment.
Fig. 1 is the schematic representation of the intelligence of well head photoelectricity remote sensing according to an embodiment of the invention injectant pump system 100.As shown in Figure 1, mainly comprise solar photovoltaic assembly 1, storage battery 2, control gear 3, inverter 4, metering pump 5, liquid container 6 according to the well head photoelectricity remote sensing of present embodiment intelligence injectant pump system 100.Each constituent element is described below one by one.
Solar photovoltaic assembly 1 can adopt the polycrystalline silicon solar photovoltaic module, and being used for solar energy converting is electric energy.Big, the big characteristics of light application time difference in summer in winter of the low and temperature difference can be selected existing on the market each model assembly according to territory of use's temperature.The solar energy utilization ratio of solar photovoltaic assembly 1 is more than 17%; Organic toughened glass manufacturing is adopted on the solar panels surface of solar photovoltaic assembly 1; Can under various severe weather conditions such as heavy rain, hail, high wind sand, protect solar photovoltaic assembly 1, make its proper functioning.
In addition, in the area that weather conditions are fit to, this system can also install wind power plant additional as the additional energy, thereby can further improve the continuous working period of this system under the situation of no public electric wire net power supply.
Fig. 2 is the schematic representation of the control gear 3 of the intelligence of well head photoelectricity remote sensing according to an embodiment of the invention injectant pump system 100.As shown in Figure 2, control gear 3 mainly comprises solar charging controller 31, time-controller 32, remote controllers 33, temperature control module 34.
Time-controller 32 is controlled the startup of well head photoelectricity remote sensing intelligence injectant pump systems 100 and is stopped and other operation.For example, time-controller 32 may command metering pumps 5 started and shut-down operation in set time every day, thereby made well head photoelectricity remote sensing intelligence injectant pump system 100 as required in certain period of time work.For example, time-controller 32 can be set startup, the shut-down operation of the metering pump 5 of 10 time points every day, thereby realizes the unmanned of filling is controlled automatically.
Although above time-controller 32 and remote controllers 33 are described as discrete part, those skilled in the art will appreciate that time-controller 32 and remote controllers 33 also can merge into a controlling component, thereby realize the function of above-mentioned two controllers.In addition, as stated, time-controller 32 and remote controllers 33 are the start and stop of may command control metering pump 5 not only, also the output quantity of may command metering pump 5.
In addition; Comprise solar charging controller 31, time-controller 32, remote controllers 33 and temperature control module 34 although described control gear 3 above, above-mentioned solar charging controller 31, time-controller 32, remote controllers 33 and temperature control module 34 also can combination in any or are discretely become different module carry out work.
Fig. 3 is the schematic representation of the liquid container of the intelligence of well head photoelectricity remote sensing according to an embodiment of the invention injectant pump system 100.Liquid container 6 can adopt stainless steel, glass fibre reinforced plastics to manufacture, and the antirust, anti-corrosive ability is strong, and the outside is equipped with level meter, can know through it and see a jar interior liquid level intuitively.As shown in Figure 3, liquid container 6 can be equipped with level sensing controller 61, overvoltage protector 62 and one-way valve 63.Overvoltage protector 62 can export pressurized overflow and current overload to metering pump and carry out two controls, guarantees security of system.One-way valve 63 is used for preventing that soup from flowing backwards, and reduces the electric motor starting electric current.
Realize liquid level control through level sensing controller 61.When the liquid level of liquid container 6 arrived predetermined low level threshold value, level sensing controller 61 can transmit alarm signal to control gear 3, and the latter reports to the police to the remote monitoring end through wired and/or cordless communication network (for example, through note), that is, notice is replenished medicament.When replenishing medicament in the given time liquid container 6, or when the liquid level of liquid container 6 arrives predetermined threshold limit value, level sensing controller 61 notice control gear 3 shutoff native systems.
The top of liquid container 6 is reserved with the filling inlet hole, so that fluid injection.The outside of liquid container 6 is reserved with enough gaps, so that insulation, thereby prevent that a jar inner soup freezes in the winter time.
Although top embodiment with one-way valve 63 as the situation of the parts of liquid container 6 as an example, those skilled in the art is appreciated that fully one-way valve 63 also can be used as independently parts and works, and perhaps also can be installed in the metering pump 5.
The schematic representation of intelligent charging method according to an embodiment of the invention is described below.
Fig. 4 is the flow chart that is used for the intelligent charging method of well head photoelectricity remote sensing intelligence injectant pump system 100 according to an embodiment of the invention.The situation of the method employing well servicing medicament of Fig. 4 as an example.
At first, this method begins at S10, and well head photoelectricity remote sensing intelligence injectant pump system 100 starts.At following step S20, control gear 3 judges that whether current pharmaceutical quantities in the liquid container 6 is less than the low spot threshold value.If the judged result at step S20 is " denying ", that is, current pharmaceutical quantities is not less than the low spot threshold value, then at following step S50, judges the current filling period that whether is in.If in the judged result of step S50 be " being ", that is, currently be in the period of annotating, then control gear 3 is given an order to metering pump 5, carries out performance, and this method turns back to step S20 simultaneously.If the judged result at step S50 is " denying ", that is, current is not to be in the filling period, and then control gear 3 is given an order to metering pump 5, does not carry out performance, and this method turns back to step S20 simultaneously.
On the other hand, be " being " as if judged result at step S20, that is, current pharmaceutical quantities is less than the low spot threshold value, and then at step S30, control gear 3 notice monitoring clients replenish medicament to remind in liquid container 6.Next, at step S40, judge whether to surpass scheduled time slot and do not replenish medicament yet.If the judged result at step S40 is " being ", that is, surpass scheduled time slot and do not replenish medicament yet, then this method proceeds to step S80, control gear 3 shutdown systems, and notice monitoring client.If the judged result at step S40 is " denying ", that is, in scheduled time slot, replenish medicament to liquid container 6, then this method turns back to step S20.Alternatively, at step S60, judge that current pharmaceutical quantities is whether less than threshold limit value (for example, the medicament in the liquid container 6 be about to exhaust threshold value).If the judged result at step S60 is " being ", that is, current pharmaceutical quantities is less than threshold limit value, and then this method proceeds to step S80, control gear 3 shutdown systems, and notice monitoring client.If the judged result at step S60 is " denying ", that is, current pharmaceutical quantities is not less than threshold limit value, and then this method proceeds to above-mentioned steps S50.
Need to prove that the above-mentioned steps S40 of this method and step S60 and flow separately thereof are merely example, can adopt other different schemes flexibly, those skilled in the art can carry out various accommodations fully.For example, any and flow thereof among above-mentioned steps S40 and the step S60 be can carry out, above-mentioned steps S40 and step S60 and flow thereof perhaps carried out.Likewise; Above-mentioned steps S50 and flow thereof also are merely the example that is used for explaining principle of the present invention; It will be appreciated by those skilled in the art that; Can enough other various standards (for example, according to various parameters or service data) judge current whether should the filling from storage battery 2, control gear 3, inverter 4, metering pump 5, liquid container 6 etc.
This shows, adopt optoelectronic integration control, reliable source of power is provided by solar panel, battery pack according to well head photoelectricity remote sensing intelligence injectant pump system of the present invention and intelligent charging method.Combined controller can be set automatic control motor, switch pump state; Can use start and stop wired and/or wireless communication network signal transmission control pump simultaneously; Realize at regular time and quantity, automatically, continuous and round-the-clock filling, unmanned guard's telecontrol; Thereby guaranteed the filling effect, reduced working strength of workers and operating cost, effect of field application is remarkable.
In sum, those skilled in the art will appreciate that and to make various modifications, modification and replacement that it all falls into likes protection scope of the present invention that claim limits enclosed to the above embodiment of the present invention.
Claims (10)
1. well head photoelectricity remote sensing intelligence injectant pump system comprises like the bottom:
Solar photovoltaic assembly, being used for solar energy converting is electric energy;
Storage battery is used for putting aside and exporting the electric energy from solar photovoltaic assembly;
Inverter is used for converting the direct current from said storage battery into Ac;
Liquid container is used for storing the medicament that will annotate;
Metering pump is used for exporting medicament from said liquid container quantitatively, thereby annotates; And
Control gear is electrically connected with each part mentioned above, be used for remote sensing, automatically control said metering pump output startup and stop;
Wherein, said control gear comprises temperature control module, is used for the control system temperature inside.
2. the intelligent injectant pump of well head photoelectricity remote sensing as claimed in claim 1 system, wherein, said control gear comprises solar charging controller, is used for controlling the charging to said storage battery.
3. according to claim 1 or claim 2 well head photoelectricity remote sensing intelligence injectant pump system, wherein, said control gear comprises time-controller, the output that is used for controlling said metering pump starts and stops at scheduled time slot.
4. according to claim 1 or claim 2 well head photoelectricity remote sensing intelligence injectant pump system, wherein, said control gear comprises remote controllers, be used for communicating by letter with the remote monitoring end, thus control said metering pump output startup and stop.
5. the intelligent injectant pump of well head photoelectricity remote sensing as claimed in claim 4 system; Wherein, Said control gear is communicated by letter with the remote monitoring end through cable network and/or cordless communication network, thereby according to the startup of the output of controlling said metering pump from the data of said well head photoelectricity remote sensing intelligence injectant pump system with stop.
6. the intelligent injectant pump of well head photoelectricity remote sensing as claimed in claim 1 system, wherein, said liquid container comprises:
The level sensing controller is used for when the liquid level of said liquid container arrives predetermined low level threshold value, transmitting alarm signal to said control gear, and said control gear is reported to the police to the remote monitoring end according to said alarm signal; And
Overvoltage protector is used for that metering pump was exported pressurized overflow and current overload and carries out two controls.
7. like one in the claim 1,2, the 5 and 6 intelligent injectant pump of described well head photoelectricity remote sensing system, wherein, on said metering pump or said liquid container, one-way valve is installed.
8. an intelligent charging method that is used for the intelligent injectant pump of well head photoelectricity remote sensing as claimed in claim 1 system comprises the steps:
A, said control gear are according to judging that from the signal of said level sensing controller whether current pharmaceutical quantities in the said liquid container is less than the low spot threshold value;
B, if current pharmaceutical quantities be not less than the low spot threshold value, then said control gear is given an order to said metering pump, carries out performance; And
C, if current pharmaceutical quantities less than the low spot threshold value, then said control gear is notified said remote monitoring end, in said liquid container, replenishes medicament to remind.
9. intelligent charging method as claimed in claim 8, wherein, step b also comprises the steps:
B1, if currently be in the predetermined filling period, then said control gear is given an order to said metering pump, carries out performance.
10. like claim 8 or 9 described intelligent charging methods, wherein, step c also comprises the steps:
C1, if judge surpass after current pharmaceutical quantities is less than the low spot threshold value scheduled time slot replenish yet medicament, or current pharmaceutical quantities less than the threshold limit value of being scheduled to; Then said control gear cuts out the intelligent injectant pump of said well head photoelectricity remote sensing system, and notice remote monitoring end.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110265015A CN102322415A (en) | 2011-09-08 | 2011-09-08 | Wellhead photovoltaic remote-sensing intelligent chemical agent injection pump system and intelligent injection method |
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| CN201110265015A CN102322415A (en) | 2011-09-08 | 2011-09-08 | Wellhead photovoltaic remote-sensing intelligent chemical agent injection pump system and intelligent injection method |
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| CN102322415A true CN102322415A (en) | 2012-01-18 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102616714A (en) * | 2012-03-26 | 2012-08-01 | 中山大学 | Liquid filling equipment and control method thereof |
| CN103823483A (en) * | 2014-01-14 | 2014-05-28 | 中国航天科技集团公司第五研究院第五一三研究所 | Well head automation liquid injection apparatus |
| GB2530370A (en) * | 2014-09-22 | 2016-03-23 | Frank Joseph Prineppi | Method and apparatus for delivering chemicals to a well head |
| CN114144952A (en) * | 2019-07-25 | 2022-03-04 | 智能追踪识别有限公司 | Circuit for supplying power to centrifugal pump |
| US11396789B2 (en) | 2020-07-28 | 2022-07-26 | Saudi Arabian Oil Company | Isolating a wellbore with a wellbore isolation system |
| US11624265B1 (en) | 2021-11-12 | 2023-04-11 | Saudi Arabian Oil Company | Cutting pipes in wellbores using downhole autonomous jet cutting tools |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5209301A (en) * | 1992-02-04 | 1993-05-11 | Ayres Robert N | Multiple phase chemical injection system |
| CN2636433Y (en) * | 2003-08-01 | 2004-08-25 | 肖奇 | Solar energy power source controller device |
| CN2755278Y (en) * | 2004-12-31 | 2006-02-01 | 中国石化胜利油田有限公司采油工艺研究院 | Automatic medicine feeder of oil well |
| CN201314224Y (en) * | 2008-12-23 | 2009-09-23 | 中国石油大学(北京) | Oil/water well continuous chemical dosing device |
| CN201581880U (en) * | 2009-11-20 | 2010-09-15 | 大庆油田有限责任公司 | Micro-computer numerical control medicine feeding device |
| CN201835774U (en) * | 2010-10-28 | 2011-05-18 | 北京恩瑞达科技有限公司 | Dosing system of foaming agent of gas well |
| CN202300959U (en) * | 2011-09-08 | 2012-07-04 | 北京恩瑞达科技有限公司 | Wellhead photoelectric remote-sensing intelligent injection pump system |
-
2011
- 2011-09-08 CN CN201110265015A patent/CN102322415A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5209301A (en) * | 1992-02-04 | 1993-05-11 | Ayres Robert N | Multiple phase chemical injection system |
| CN2636433Y (en) * | 2003-08-01 | 2004-08-25 | 肖奇 | Solar energy power source controller device |
| CN2755278Y (en) * | 2004-12-31 | 2006-02-01 | 中国石化胜利油田有限公司采油工艺研究院 | Automatic medicine feeder of oil well |
| CN201314224Y (en) * | 2008-12-23 | 2009-09-23 | 中国石油大学(北京) | Oil/water well continuous chemical dosing device |
| CN201581880U (en) * | 2009-11-20 | 2010-09-15 | 大庆油田有限责任公司 | Micro-computer numerical control medicine feeding device |
| CN201835774U (en) * | 2010-10-28 | 2011-05-18 | 北京恩瑞达科技有限公司 | Dosing system of foaming agent of gas well |
| CN202300959U (en) * | 2011-09-08 | 2012-07-04 | 北京恩瑞达科技有限公司 | Wellhead photoelectric remote-sensing intelligent injection pump system |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102616714A (en) * | 2012-03-26 | 2012-08-01 | 中山大学 | Liquid filling equipment and control method thereof |
| CN103823483A (en) * | 2014-01-14 | 2014-05-28 | 中国航天科技集团公司第五研究院第五一三研究所 | Well head automation liquid injection apparatus |
| GB2530370A (en) * | 2014-09-22 | 2016-03-23 | Frank Joseph Prineppi | Method and apparatus for delivering chemicals to a well head |
| GB2530370B (en) * | 2014-09-22 | 2017-05-17 | Remote Automation Monitoring Ltd | Method and apparatus for delivering chemicals to a well head |
| CN114144952A (en) * | 2019-07-25 | 2022-03-04 | 智能追踪识别有限公司 | Circuit for supplying power to centrifugal pump |
| US11396789B2 (en) | 2020-07-28 | 2022-07-26 | Saudi Arabian Oil Company | Isolating a wellbore with a wellbore isolation system |
| US11624265B1 (en) | 2021-11-12 | 2023-04-11 | Saudi Arabian Oil Company | Cutting pipes in wellbores using downhole autonomous jet cutting tools |
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Address after: 100192, room 1106, B, fortune 8, science and technology center, science learning road, Haidian District, Beijing Applicant after: BEIJING ENRUIDA TECHNOLOGY CO., LTD. Applicant after: Zhang Xiaorui Address before: 100192, room 1106, B, fortune 8, science and technology center, science learning road, Haidian District, Beijing Applicant before: Beijing Enruida Technology Co., Ltd. Applicant before: Zhang Xiaorui |
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Application publication date: 20120118 |
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