CN110630246A - Automatic measuring device and method for oil field production well liquid production amount - Google Patents
Automatic measuring device and method for oil field production well liquid production amount Download PDFInfo
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- CN110630246A CN110630246A CN201910989691.5A CN201910989691A CN110630246A CN 110630246 A CN110630246 A CN 110630246A CN 201910989691 A CN201910989691 A CN 201910989691A CN 110630246 A CN110630246 A CN 110630246A
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- 239000007788 liquid Substances 0.000 title claims abstract description 105
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000005259 measurement Methods 0.000 claims abstract description 39
- 238000004891 communication Methods 0.000 claims abstract description 22
- 238000004140 cleaning Methods 0.000 claims description 18
- 238000007599 discharging Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 4
- 238000010295 mobile communication Methods 0.000 claims description 4
- 238000000691 measurement method Methods 0.000 claims description 2
- 238000004364 calculation method Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 24
- 238000010586 diagram Methods 0.000 description 5
- 239000003129 oil well Substances 0.000 description 5
- 239000010779 crude oil Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000003518 caustics Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/04—Measuring depth or liquid level
- E21B47/047—Liquid level
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The invention discloses an automatic measuring device and method for the liquid production amount of an oil field production well, wherein the device comprises: a controller and a measuring device body; the measuring device body includes: the system comprises a first electromagnetic valve, a separator, a liquid level sensor group and a pipeline pump; the controller is respectively in control connection with the first electromagnetic valve and the pipeline pump; the controller is in communication connection with the liquid level sensor group; the liquid level sensor group comprises at least three liquid level sensors and is arranged on the inner wall of the separator from bottom to top according to a preset distance; the input end of the first electromagnetic valve is connected with a wellhead pipeline, and the output end of the first electromagnetic valve is connected with a first inlet at the top of the separator; one end of the pipeline pump is connected with the discharge port of the separator; the other end is connected with the output main pipeline. The device is connected according to controller and between a plurality of level sensor, first solenoid valve and the tubing pump, through carrying out real-time statistics and calculation to the flow, has realized the automation of measurement process, has improved measuring accuracy and measurement of efficiency.
Description
Technical Field
The invention relates to the technical field of oil field measurement, in particular to an automatic measuring device and method for the liquid production amount of an oil field production well.
Background
The single well metering of the oil well is a necessary means for dynamically analyzing and acquiring data in oil field development, and because the conventional oil well metering period is short, the oil field is mostly completed by adopting a multi-well metering station for many years. At present, oil field oil well metering at home and abroad generally adopts five methods: (1) measuring oil in a horizontal overhead tank; (2) measuring oil by using a glass tube; (3) tipping bucket for oil measurement; (4) a liquid level recovery method; (5) a power diagram method.
In the prior art, a horizontal overhead tank oil measuring method, a glass tube flowmeter and a tipping bucket oil measuring method have the defects of high labor intensity of workers, low accuracy and poor reliability due to the fact that the measuring method is relatively original, and particularly, the measuring of the yield of an ultra-heavy oil well has the defects of very low speed, difficult discharge of gas, need of sedimentation for more than 4 hours and incapability of realizing real-time online measuring; in recent years, some domestic oil fields are measured by a liquid level recovery method and a diagram method, because the two measurement methods need a large amount of oil well production data, the diagram is difficult to be automatically identified by a computer, some empirical parameters are needed, and the method has large human factors, large measurement errors and unsatisfactory use effect. These all bring huge bottlenecks to the oil well automation technology popularization.
Therefore, the technical problem to be solved by technical personnel in the field is to find an automatic method for measuring the produced liquid amount of the oilfield production well, which can realize real-time online measurement and has more accurate measurement result.
Disclosure of Invention
In view of the above, the present invention provides an automatic measuring device and method for the amount of liquid produced from an oilfield production well that solves at least some of the above-mentioned problems.
In a first aspect, an automatic measuring device for the amount of liquid produced from an oil field production well comprises: a controller and a measuring device body;
the measuring device body includes: the system comprises a first electromagnetic valve, a separator, a liquid level sensor group and a pipeline pump;
wherein: the controller is respectively in control connection with the first electromagnetic valve and the pipeline pump; the controller is in communication connection with the liquid level sensor group;
the liquid level sensor group comprises at least three liquid level sensors and is arranged on the inner wall of the separator from bottom to top according to a preset distance; respectively marked as the lowest L bit, the middle i bit and the highest H bit;
the input end of the first electromagnetic valve is connected with a wellhead pipeline, and the output end of the first electromagnetic valve is connected with a first inlet at the top of the separator;
one end of the pipeline pump is connected with a discharge port of the separator, and the discharge port is positioned below the L position; the other end is connected with the output main pipeline.
Furthermore, a three-way pipe fitting is also arranged on a pipeline at the other end of the pipeline pump, which is connected with the main output pipeline;
the first end of the three-way pipe fitting is connected with the other end of the pipeline pump;
the second end of the three-way pipe fitting is connected with the pipeline of the output main pipeline through a second electromagnetic valve;
the third end of the three-way pipe fitting is connected with the second inlet of the separator through a third electromagnetic valve; the second inlet is positioned above the H position;
and the controller is respectively in control connection with the second electromagnetic valve and the third electromagnetic valve.
Further, the controller is a PLC controller or an industrial personal computer.
Further, the controller is also provided with: a wireless communication module; the controller is connected with the remote terminal in a wireless communication mode.
Further, the wireless communication module includes one or more of:
WIFI module, public mobile communication network communication module, bluetooth module, near field communication module.
In a second aspect, an embodiment of the present invention further provides a method for automatically measuring the amount of liquid produced from an oil field production well, where the method for measuring the amount of liquid produced from the oil field production well by using the measuring device in any one of the embodiments includes:
s1, controlling the pipeline pump to start through the controller, and reducing the liquid level in the separator to an L level; the pipeline pump stops working;
s2, controlling the first electromagnetic valve to open, and discharging the medium to the liquid level to reach the H level; respectively recording the time when the liquid level reaches the i position and the H position; counting and calculating the flow between any two adjacent liquid level sensors, and displaying the maximum flow, the minimum flow and the average flow of single measurement;
s3, when the liquid level reaches the H position, the controller controls the pipeline pump to start, the medium in the separator is lowered to the L position, and the single measurement is finished; and (5) circularly executing the steps S2 and S3, and repeatedly metering the production well.
Further, the method further comprises:
s4, after the medium liquid amount measurement is finished, the controller controls the first electromagnetic valve to open the injected medium to the preset liquid level height; controlling the first electromagnetic valve and the second electromagnetic valve to be closed, starting the pipeline pump and the third electromagnetic valve to work, and cleaning the liquid level sensor;
and S5, when the cleaning time reaches the preset time, the controller controls the third electromagnetic valve to be closed, and opens the second electromagnetic valve to forcibly discharge the cleaned medium in the separator.
The device adopts the principle of a volume method, a plurality of liquid level sensors with different heights are arranged in a separator according to preset distances, and the flow is counted and calculated in real time according to the connection between a controller and the plurality of liquid level sensors, a first electromagnetic valve and a pipeline pump, so that the automation of the measuring process is realized, and the measuring accuracy and the measuring efficiency are improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of an automatic measuring device for the amount of liquid produced from an oilfield production well according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of connections between a controller and a plurality of components according to an embodiment of the present invention.
FIG. 3 is a flow chart of a method for automatically measuring the amount of fluid produced by an oilfield production well according to an embodiment of the invention.
In the drawings: 1-controller, 2-measuring device body, 21-first electromagnetic valve, 22-separator, 23-liquid level sensor group, 24-pipeline pump, 25-second electromagnetic valve, 26-third electromagnetic valve.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Referring to fig. 1, an automatic measuring device for the amount of liquid produced from an oil field production well according to an embodiment of the present invention includes: a controller 1 and a measuring device body 2;
wherein, measuring device body 2 includes: a first solenoid valve 21, a separator 22, a liquid level sensor group 23 and a pipeline pump 24. The controller 1 is respectively connected with the first electromagnetic valve 21 and the pipeline pump 24 in a control way; the controller 1 is in communication connection with the liquid level sensor group 23; the separator is, for example, a cylindrical container, and the liquid level sensor group 23 includes at least three liquid level sensors, which are disposed on the inner wall of the separator 22 at a predetermined distance from bottom to top; respectively marked as the lowest L bit, the middle i bit and the highest H bit; the liquid level sensors are, for example, switch type sensors, and are used for distinguishing liquid levels, numbering the liquid levels, and marking the liquid levels as an L level, a 1 level, a 2 level, a 3 level, … level and an H level, wherein the L level is the lowest switch type sensor, and the H level is the highest liquid level sensor.
The quantity of the liquid level sensors is related to the medium and the flow of the production well pipeline, and when the flow is larger, a small quantity of liquid level sensors can be arranged; when the flow is small, a large number of liquid level sensors are required to be arranged; the measuring accuracy of the liquid production amount of the oil field production well can be ensured.
The input end of the first electromagnetic valve 21 is connected with a wellhead pipeline, and the output end of the first electromagnetic valve is connected with a first inlet at the top of the separator 22; one end of the pipe pump 24 is connected to the discharge port of the separator 22, which is located below the L position; the other end is connected with the output main pipeline.
The separator is a regular cylindrical container with the same bottom cross-sectional area, wherein the preset distance can be arranged at equal intervals or non-equal intervals.
The calculation process is as follows:
Vi＝πR2D
wherein R is the radius of the cylinder, pi R2The distance D, V between two liquid level sensors is arbitraryiIs the volume within a specific time, which is the recorded time difference between the two level sensors; a plurality of V to be calculatediAnd then calculates the average value V per unit time (e.g., in hours). Taking the oil production of the production well for 8 hours as an example, the total liquid output amount is as follows: 8V.
In this embodiment, the device adopts the volume method principle, and the separator is the regular cylinder container that the bottom sectional area is the same, for example sets up a plurality of level sensor of different height through equidistant in the separator inside, and the volume between the different liquid levels is the fixed value, and the controller can record the medium according to the signal of level sensor feedback and arrive different liquid level time, calculates the unit interval flow. When the liquid level reaches the H level and the liquid level measurement is finished, the forced-discharge pump is started, the liquid level is lowered to the L level and the pump stops working, the liquid level is raised, and the system starts to measure.
The measuring process and the working principle are as follows:
(1) starting a separator pipeline pump, and reducing the liquid level in the separator to an L position; in order to ensure the accuracy of the measurement, the medium present in the separator is subjected to a draining process. Then, a first electromagnetic valve is opened, produced liquid of the production well is discharged, the liquid level in the separator rises, the liquid level passes through the positions of 1, 2 and 3 … H, and the time when the liquid level reaches different liquid level sensors is recorded;
(2) after the liquid level reaches the H position, finishing single measurement, respectively obtaining the flow rates of … H-1-H positions of 1-2, 2-3 and 3-4 positions by system calculation, and displaying the maximum flow rate, the minimum flow rate and the average flow rate of the single measurement on an interface; and calculating the liquid output amount of the oil field production well according to the average flow and the working time of each day.
(3) After the measurement is finished, the first electromagnetic valve is closed after the liquid level reaches the H position, the pipeline pump is opened to discharge the medium, the liquid level is lowered to the L position, a new cycle can be started, and the same production well can be repeatedly measured.
According to the connection between the controller and the plurality of liquid level sensors, the first electromagnetic valve and the pipeline pump respectively, the automation of the measuring process is realized by counting and calculating the flow in real time, and the measuring accuracy and the measuring efficiency are improved.
In one embodiment, a tee pipe is further arranged on a pipeline connecting the other end of the pipeline pump 24 with the main output pipeline; the other end of the pipeline pump 24 is connected with the first end of the tee pipe fitting; the second end of the three-way pipe fitting is connected with the pipeline of the output main pipeline through a second electromagnetic valve 25; the third end of the tee is connected to the second inlet of separator 22 through a third solenoid valve 26; wherein the second inlet is located above the highest sensor, i.e. the H position.
In this embodiment, after the measurement, need clean the inside level sensor surface of separator, avoid next measurement error or measurement inaccurate. Such as crude oil in the separator, and also contains parts of silt, stickies and corrosive substances, which need to be cleaned from substances adhering to the level sensor. The produced crude oil has high water content and can be cleaned by the crude oil. In the embodiment, the device can realize automatic cleaning, forcibly removes the medium of the separator, ensures the state of the separator and prepares for the next measurement.
The specific automatic cleaning process is as follows:
1) the corresponding cleaning time can be set according to the oil quality of the medium, such as the water content. For example, when the water content of the oil product is more than 90%, the cleaning time is about 30 minutes. When the measurement is finished, the controller controls the first solenoid valve to be opened, and part of the medium of the separator is injected, for example, the injected volume is more than half of the volume of the separator, namely: after a feedback signal of one liquid level sensor in the middle is obtained, the first electromagnetic valve is closed, the pipeline pump and the third electromagnetic valve are opened, and the second electromagnetic valve is closed at the same time; forming a circulating flush of the separator, the tubing pump and the third solenoid valve.
2) When the cleaning time reaches a preset time, such as 30 minutes; and the controller closes the third electromagnetic valve, opens the second electromagnetic valve, and empties the medium used for cleaning in the separator, so as to ensure the state in the separator and prepare for the next measurement.
Through self-cleaning, realize non-maintaining, and then also can prolong this measuring device's life, improve measurement accuracy. After the cleaning is finished, the medium in the separator is forcibly emptied by the pipeline pump, so that no scale is generated in the container.
Further, as shown in fig. 2, the Controller 1 may be, for example, a PLC Controller, which is a Programmable Logic Controller (PLC), a digital electronic device having a microprocessor, and a digital Logic Controller for automation control. The PLC controller can load the control instructions of the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve and the pipeline pump into the memory for storage and execution.
In addition, the controller 4 may be, for example, an industrial personal computer, which has important computer attributes and characteristics, such as having a computer CPU, a hard disk, an internal memory, peripherals and interfaces, and having an operating system, a control network and a protocol, computing capabilities, and a friendly human-computer interface. For example, the measuring device can be provided with a temperature sensor, a pressure sensor, a concentration meter and the like on a pipeline or in a separator, and feedback data of the sensing equipment is acquired through an industrial personal computer, such as parameters of temperature, pressure, concentration and the like can be displayed.
Furthermore, the controller can be provided with a wireless communication module, so that the connection with a remote terminal is realized, a control instruction of the remote terminal is received, related parameters of a real-time working state can be fed back, the remote control on the measurement time and frequency can be realized, and the actual requirements of the oil field production condition are met. The wireless communication module can be any one of a WIFI module, a public mobile communication network communication module, a Bluetooth module and a near field communication module. The public mobile communication network communication module can be 2G, 3G, 4G, 5G communication modules of various standards, and the near Field communication module can be an nfc (near Field communication) module or the like.
Based on the measuring device of the embodiment, the invention also provides a measuring method for automatically measuring the liquid amount produced by the oil field production well, which is shown in fig. 3 and comprises the following steps:
s1, controlling the starting of the pipeline pump and the electromagnetic valve through the PLC, and reducing the liquid level in the separator to an L level;
s1, controlling the pipeline pump to start through the controller, and reducing the liquid level in the separator to an L level; the pipeline pump stops working;
s2, controlling the first electromagnetic valve to open, and discharging the medium to the liquid level to reach the H level; respectively recording the time when the liquid level reaches the i position and the H position; counting and calculating the flow between any two adjacent liquid level sensors, and displaying the maximum flow, the minimum flow and the average flow of single measurement;
s3, when the liquid level reaches the H position, the controller controls the pipeline pump to start, the medium in the separator is lowered to the L position, and the medium is received by single measurement; when a plurality of measurements are required according to preset conditions, steps S2 and S3 may be performed cyclically, and the production well may be repeatedly metered.
After the measurement is finished, the steps of cleaning and forced discharging are as follows:
s4, after the medium liquid amount measurement is finished, the controller controls the first electromagnetic valve to open the injected medium to the preset liquid level height; controlling the first electromagnetic valve and the second electromagnetic valve to be closed, starting the pipeline pump and the third electromagnetic valve to work, and cleaning the liquid level sensor;
and S5, when the cleaning time reaches the preset time, the controller controls the third electromagnetic valve to be closed, and opens the second electromagnetic valve to forcibly discharge the cleaned medium in the separator.
In the embodiment, a separator pipeline pump is started, and the liquid level in the separator is reduced to the L level; the produced liquid of the production well is discharged into the separator, the liquid level in the separator rises, the liquid level passes through the positions of 1, 2 and 3, … H, and the time when the liquid level reaches different liquid level sensors is recorded;
after the liquid level reaches the H position, finishing single measurement, calculating by the controller to obtain the flow rates of … H-1-H positions of 1-2, 2-3 and 3-4 positions respectively, and displaying the maximum flow rate, the minimum flow rate and the average flow rate of the single measurement on an interface;
after the liquid level reaches the H position, the pipeline pump and the second electromagnetic valve are controlled to be started, the liquid level is reduced to the L position, a new cycle can be started, and the same production well can be repeatedly measured; after the liquid volume measurement is finished, starting a first electromagnetic valve to inject a medium, and then closing the first electromagnetic valve and a second electromagnetic valve; and starting a third electromagnetic valve and a pipeline pump to flush and clean the surface of the liquid level sensor.
And after the cleaning is finished, closing the third electromagnetic valve, opening the second electromagnetic valve, and emptying the medium used for cleaning in the separator through the pipeline pump to ensure the state in the separator and prepare for the next measurement.
According to the automatic measuring method for the oil field production well liquid production amount, the automation of the measuring process and the automation of cleaning are realized through the control connection between the controller and each part; the flow is counted and calculated in real time, so that the liquid amount is measured in real time, and the measurement precision is high. In addition, the liquid level sensor can be automatically cleaned, the service life of equipment is prolonged, and the measurement precision is improved.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (7)
1. An automatic measuring device of oil field producing well liquid production volume which characterized in that includes: a controller (1) and a measuring device body (2);
the measuring device body (2) comprises: the device comprises a first electromagnetic valve (21), a separator (22), a liquid level sensor group (23) and a pipeline pump (24);
wherein: the controller (1) is respectively connected with the first electromagnetic valve and the pipeline pump (24) in a control way; the controller (1) is in communication connection with the liquid level sensor group (23);
the liquid level sensor group (23) comprises at least three liquid level sensors and is arranged on the inner wall of the separator (22) from bottom to top according to a preset distance; respectively marked as the lowest L bit, the middle i bit and the highest H bit;
the input end of the first electromagnetic valve (21) is connected with a wellhead pipeline, and the output end of the first electromagnetic valve is connected with a first inlet at the top of the separator (22);
one end of the pipeline pump (24) is connected with a discharge port of the separator (22), and the discharge port is positioned below the L position; the other end is connected with the output main pipeline.
2. The automatic measuring device for the amount of liquid produced by the oil field production well according to the claim 1, characterized in that a tee pipe is further arranged on the pipeline of the other end of the pipeline pump (24) connected with the main output pipeline;
the first end of the tee pipe fitting is connected with the other end of the pipeline pump (24);
the second end of the three-way pipe fitting is connected with the pipeline of the output main pipeline through a second electromagnetic valve (25);
the third end of the tee is connected with the second inlet of the separator (22) through a third electromagnetic valve (26); the second inlet is positioned above the H position;
the controller (1) is respectively connected with the second electromagnetic valve (25) and the third electromagnetic valve (26) in a control mode.
3. The automatic measuring device for the amount of liquid produced from the oil field production well according to claim 1, wherein the controller (1) is a PLC controller or an industrial personal computer.
4. An automatic measuring device for the amount of liquid extracted from an oil field production well according to claim 3, characterized in that the controller (1) is further provided with: a wireless communication module; the controller (1) is connected with a remote terminal in a wireless communication mode.
5. The apparatus of claim 4, wherein the wireless communication module comprises one or more of:
WIFI module, public mobile communication network communication module, bluetooth module, near field communication module.
6. An automatic measurement method for the production fluid volume of an oil field production well, which is characterized in that the measurement of the production fluid volume of the oil field production well is realized by adopting the measurement device according to any one of claims 1 to 5, and comprises the following steps:
s1, controlling the pipeline pump to start through the controller, and reducing the liquid level in the separator to an L level; the pipeline pump stops working;
s2, controlling the first electromagnetic valve to open, and discharging the medium to the liquid level to reach the H level; respectively recording the time when the liquid level reaches the i position and the H position; counting and calculating the flow between any two adjacent liquid level sensors, and displaying the maximum flow, the minimum flow and the average flow of single measurement;
s3, when the liquid level reaches the H position, the controller controls the pipeline pump to start, and the medium in the separator is lowered to the L position; ending the single measurement; and (5) circularly executing the steps S2 and S3, and repeatedly metering the production well.
7. The method of automatically measuring the amount of fluid produced from an oilfield production well of claim 6, further comprising:
s4, after the medium liquid amount measurement is finished, the controller controls the first electromagnetic valve to open the injected medium to the preset liquid level height; controlling the first electromagnetic valve and the second electromagnetic valve to be closed, starting the pipeline pump and the third electromagnetic valve to work, and cleaning the liquid level sensor;
and S5, when the cleaning time reaches the preset time, the controller controls the third electromagnetic valve to be closed, and opens the second electromagnetic valve to forcibly discharge the cleaned medium in the separator.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115680603A (en) * | 2021-07-26 | 2023-02-03 | 中国石油天然气股份有限公司 | Device for controlling degassing of wellhead of carbon dioxide huff-puff well |
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| RU61344U1 (en) * | 2006-09-01 | 2007-02-27 | Открытое акционерное общество "Инженерно-производственная фирма СИБНЕФТЕАВТОМАТИКА" (ОАО ИПФ "СибНА") | DEVICE FOR MEASURING OIL WELL DEBIT |
| CN202734922U (en) * | 2012-06-13 | 2013-02-13 | 中国石油天然气股份有限公司 | Multi-point electronic liquid level metering tank |
| CN205876297U (en) * | 2016-08-18 | 2017-01-11 | 张磊 | Producing well liquid measure measurement analytical equipment |
| CN207750057U (en) * | 2017-11-08 | 2018-08-21 | 成都市卓新实业有限公司 | A kind of liquid-gas separator automatic flushing device |
| CN210768736U (en) * | 2019-10-17 | 2020-06-16 | 南京瑞路通达信息技术有限公司 | Automatic measuring device for liquid production amount of oil field production well |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115680603A (en) * | 2021-07-26 | 2023-02-03 | 中国石油天然气股份有限公司 | Device for controlling degassing of wellhead of carbon dioxide huff-puff well |
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