CN110965985B - Automatic measuring device and method for mass flow of produced liquid of oilfield production well - Google Patents
Automatic measuring device and method for mass flow of produced liquid of oilfield production well Download PDFInfo
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- CN110965985B CN110965985B CN201911060553.5A CN201911060553A CN110965985B CN 110965985 B CN110965985 B CN 110965985B CN 201911060553 A CN201911060553 A CN 201911060553A CN 110965985 B CN110965985 B CN 110965985B
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 239000007788 liquid Substances 0.000 title claims abstract description 34
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
- 238000005303 weighing Methods 0.000 claims abstract description 36
- 238000004891 communication Methods 0.000 claims abstract description 22
- 238000005259 measurement Methods 0.000 claims abstract description 18
- 239000012530 fluid Substances 0.000 claims description 19
- 230000008859 change Effects 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 11
- 230000000737 periodic effect Effects 0.000 claims description 9
- 230000000630 rising effect Effects 0.000 claims description 7
- 238000004364 calculation method Methods 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 5
- 238000010295 mobile communication Methods 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 238000004880 explosion Methods 0.000 abstract description 2
- 239000003129 oil well Substances 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 238000000691 measurement method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000004458 analytical method Methods 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
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000003909 pattern recognition Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The invention discloses an automatic measuring device and method for the mass flow of produced liquid of an oilfield production well, wherein the device comprises the following components: a controller and a measuring device body; the measuring device body includes: the device comprises a first electromagnetic valve, a second electromagnetic valve, a metering tank, a pipeline pump, an integrated weighing module and a third electromagnetic valve; wherein: the controller is respectively connected with the first electromagnetic valve, the second electromagnetic valve, the pipeline pump and the third electromagnetic valve in a control way; the controller is in communication connection with the integrated weighing module. The invention adopts an external metering tank, and the occupied area is small. No movable parts are arranged in the tank, the possibility of scaling is reduced, and the accuracy of calculating the liquid output mass flow is easy to ensure; the metering tank and the integrated weighing module are easy to prevent corrosion and explosion, reliable in structure and easy to maintain. On the other hand, the automatic online measurement of the mass data of the flow is realized, and the accuracy and the efficiency of measurement are improved.
Description
Technical Field
The invention relates to the technical field of oilfield measurement, in particular to an automatic measuring device and method for mass flow of produced liquid of an oilfield production well.
Background
Single well metering of oil wells is a necessary means for dynamic analysis and data acquisition in oil field development, and oil fields are mostly completed by multi-well metering stations for many years due to the short metering period of conventional oil wells. At present, five methods are generally adopted for metering oil wells in oil fields at home and abroad: (1) measuring oil in a horizontal overhead tank; (2) oil metering of a glass tube; (3) tipping bucket oil metering; (4) a liquid level restoration method; (5) a work pattern method.
In the prior art, the horizontal overhead tank oil metering method, the glass tube flowmeter and the tipping bucket oil metering method have the defects of high labor intensity, low accuracy and poor reliability because the metering method is relatively original, particularly the metering of the yield of an ultra-thick oil well, the speed is very low, the gas is not easy to discharge, the sedimentation is needed for more than 4 hours, and the real-time online metering cannot be realized; some weighing methods also use a metering tank, manually open a valve, manually record inflow time of produced liquid, manually record weight data, manually operate too much, and have too large human error; moreover, because the valve is opened manually, the original air pressure in the metering tank is unknown, and only the weight of the liquid flowing in the metering tank at a certain time when the valve is opened is known, because the timing is inaccurate, the data of the mass flow is inaccurate, the whole liquid amount for calculating the working time is inaccurate, a large amount of manpower is needed, automatic detection cannot be realized, and on-line detection cannot be realized.
Still other methods utilize volumetric principles to measure because there is gas mixing in the produced fluid, resulting in inaccurate fluid volume data. In recent years, some oil fields in China adopt a liquid level recovery method and a work pattern method for metering, and because the two metering methods need a large amount of oil well production data, automatic work pattern recognition by a computer is difficult, and some experience parameters are needed, so that the metering error is large and the use effect is not ideal due to larger human factors. These all bring a huge bottleneck to the popularization of the oil well automation technology.
At present, a common mass flowmeter has the defects of complex process, large occupied area, incomplete separation and inaccurate result because of easy scaling of produced liquid of an oilfield production well because of the requirement of accuracy and gas-liquid separation in a previous process; and the mass flowmeter is expensive, belongs to precise instruments, and has high maintenance cost.
Therefore, an automatic and real-time online measurement method for measuring the mass flow of the produced fluid of the oilfield production well with more accurate measurement results is sought, and the technical problem to be solved by the technicians in the field is urgent.
Disclosure of Invention
In view of the above problems, the present invention provides an automatic measurement device and method for mass flow of produced fluid of an oilfield production well, which at least solves some of the above technical problems.
In a first aspect, an automatic measurement device for mass flow of produced fluid from an oilfield production well, comprising: a controller and a measuring device body;
the measuring device body includes: the device comprises a first electromagnetic valve, a second electromagnetic valve, a metering tank, a pipeline pump, an integrated weighing module and a third electromagnetic valve;
wherein: the controller is respectively connected with the first electromagnetic valve, the second electromagnetic valve, the pipeline pump and the third electromagnetic valve in a control way; the controller is in communication connection with the integrated weighing module;
the metering tank is arranged above the integrated weighing module;
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 metering tank;
the input end of the second electromagnetic valve is connected with a first outlet at the bottom of the metering tank, the output end of the second electromagnetic valve is connected with one end of the pipeline pump, and a pipeline with the other end connected with the output main pipeline is further provided with a three-way pipe fitting;
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 output end of a third electromagnetic valve, and the input end of the third electromagnetic valve is connected with a second outlet at the upper end of the metering tank;
and the third end of the three-way pipe fitting is connected with the main output pipe.
In one embodiment, the connecting pipes of the first inlet, the first outlet and the second outlet are all hoses;
the hose is connected with the pipelines where the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve are respectively located through flanges.
In one embodiment, the controller is a PLC controller or an industrial personal computer.
In one embodiment, the controller is further provided with: a wireless communication module; the controller is connected with the remote terminal in a wireless communication mode.
In one embodiment, the wireless communication module includes one or more of the following:
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 an automatic measurement method for a mass flow rate of a produced fluid of an oilfield production well, by adopting the measurement device according to any one of the embodiments, measurement of the mass flow rate of the produced fluid of the oilfield production well is achieved, including the steps of:
s1, controlling the first electromagnetic valve and the third electromagnetic valve to be started through a controller, and closing the second electromagnetic valve to enable produced liquid to be discharged into a metering tank through the first electromagnetic valve; the integral weighing module is used for monitoring the mass change data of the whole metering tank;
s2, when the overall quality data of the metering tank is not changed any more and the preset duration is reached, determining that the produced liquid is full of the metering tank; the controller controls the second electromagnetic valve and the pipeline pump to start, the first electromagnetic valve and the third electromagnetic valve are closed, and produced liquid enters the main pipeline through the second electromagnetic valve and the pipeline pump;
s3, after the whole mass data of the metering tank is changed to minimum data and the preset time length is reached, the controller controls the pipeline pump to stop working and closes the second electromagnetic valve; circularly executing the steps S1 to S3;
s4, in the process of executing the steps S1-S3, recording the whole mass change data of the metering tank in real time, and generating a graph of time T and mass W; the graph includes a plurality of periodic images;
s5, determining that at least two adjacent periodic images with the same slope exist in the plurality of periodic images; selecting two quality data W of rising slopes in any one period of image 1 And W is 2 And corresponding T 1 And T 2 The method comprises the steps of carrying out a first treatment on the surface of the And calculating the mass flow.
The automatic measuring device for the mass flow of the produced liquid of the oilfield production well provided by the embodiment of the invention has the following advantages:
(1) The metering tank is placed above the integrated weighing module, and according to the connection between the controller and the integrated weighing module, the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve and the pipeline pump, the automatic on-line detection of the mass data of the flow can be realized.
(2) Compared with the common mass flowmeter, the invention adopts the external metering tank, and the occupied area is smaller. No movable parts are arranged in the tank, the possibility of scaling is reduced, and the accuracy of calculating the liquid output mass flow is easy to ensure; the metering tank and the integrated weighing module are easy to prevent corrosion and explosion, reliable in structure and easy to maintain.
(3) Compared with the traditional weighing method liquid amount detection, the method disclosed by the invention has the advantages that the change of the actual mass flow caused by different air pressures in the metering tank is considered, the mass change curve generated by the integrated weighing module is analyzed through the controller, the proper and accurate curve segment is selected to calculate the mass flow, and the accuracy of a calculation result is higher.
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 thereof as well as the appended drawings.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic diagram of an automatic measuring device for mass flow of produced fluid in an oilfield production well according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of connection between a controller and a plurality of components according to an embodiment of the present invention.
Fig. 3 is a graph of measured mass of a metering tank over time as provided by an embodiment of the present invention.
Fig. 4 is a flowchart of an automatic measurement method for mass flow of produced fluid of an oilfield production well according to an embodiment of the present invention.
In the accompanying drawings: 1-a controller, 2-a measuring device body, 21-a first electromagnetic valve, 22-a second electromagnetic valve, 23-a metering tank, 24-a pipeline pump, 25-an integrated weighing module and 26-a 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 measurement device for mass flow of produced fluid of an oilfield production well according to an embodiment of the present invention includes: a controller 1 and a measuring device body 2;
wherein: the measuring device body 2 includes: a first solenoid valve 21, a second solenoid valve 22, a metering tank 23, a pipeline pump 24, an integrated weighing module 25 and a third solenoid valve 26; the controller 1 is respectively connected with a first electromagnetic valve 21, a second electromagnetic valve 22, a pipeline pump 24 and a third electromagnetic valve 26 in a control way; the controller 1 is in communication connection with the integrated weighing module 25; the metering tank 23 is, for example, a cylindrical container.
The metering tank 23 is placed above the integral weighing module 25; 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 metering tank 23; the input end of the second electromagnetic valve 22 is connected with a first outlet at the bottom of the metering tank 23, the output end of the second electromagnetic valve is connected with one end of the pipeline pump 24, and a three-way pipe fitting is further arranged on a pipeline of which the other end of the pipeline pump 24 is connected with the output main pipeline.
The first end of the three-way pipe fitting is connected with the other end of the pipeline pump 24; the second end is connected with the output end of a third electromagnetic valve 26, and the input end of the third electromagnetic valve 26 is connected with a second outlet at the upper end of the metering tank 23; the third end of the three-way pipe fitting is connected with the output main pipe.
Wherein, for example, integral type weighing module 25 can adopt a novel sensor application structure, and it combines parts such as high accuracy shear beam weighing sensor, load transfer device and installation connecting plate as an organic whole, has both guaranteed the characteristics that shear beam sensor high accuracy, long-term stability are good, has solved the problem of weighing error because of the installation is improper again.
In this embodiment, the external metering tank 23 and the integral weighing module 25 are used, and a controller is added to calculate the mass flow of the oilfield produced fluid by detecting the weight change of the metering tank 23, and then the mass of the oilfield produced fluid is counted by multiplying the working time.
In one embodiment, the connecting pipes of the first inlet, the first outlet and the second outlet are replaced by hoses in order to prevent the weight of the connecting pipes of the first inlet, the first outlet and the second outlet of the metering tank from accounting for the total weight of the metering tank or from exceeding the measuring range of the integral weighing module. On the one hand, the dead weight can be reduced, and on the other hand, the interference caused by the weight of the pipeline to the weight change of the monitoring metering tank is avoided.
The hose is connected with the pipelines where the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve are respectively located through flanges. The pipeline can be a metal pipeline, and the metal pipeline is supported by the fixing device and is fixed.
Further, referring to fig. 2, the controller 1 may be, for example, a PLC controller, which is a programmable logic controller (Programmable Logic Controller, PLC), a digital electronic device having a microprocessor, and is used for an automated control. The PLC controller may load the control instructions of the first solenoid valve 21, the second solenoid valve 22, the third solenoid valve 26, and the pipe pump 24 into the memory for storage and execution.
In addition, the controller 1 may be, for example, an industrial personal computer, where the industrial personal computer has important computer attributes and features, such as a computer CPU, a hard disk, a memory, peripherals and interfaces, and has an operating system, a control network and protocol, a computing capability, and a friendly man-machine 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 the metering tank 23, and feedback data of the sensing equipment can be obtained through an industrial personal computer, for example, parameters such as temperature, pressure, concentration and the like can be displayed.
Furthermore, the controller 1 can be further provided with a wireless communication module to realize connection with a remote terminal, receive a control instruction of the remote terminal, feed back relevant parameters of a real-time working state, realize remote control of measurement time and frequency, and be suitable for actual requirements of oilfield production conditions. 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 and 5G communication modules with various standards, and the near field communication module can be NFC (Near Field Communication) module and the like.
Specifically, during the measurement process, the controller monitors the continuously variable mass data of the metering tank, draws a graph, as shown in fig. 3, after the automatic measurement device starts to measure, the first electromagnetic valve 21 is opened, because the air pressure of the metering tank 23 is inconsistent with the air pressure in the pipeline and may be higher or lower, the mass rising curve of the metering tank 23 may have a slope lower or higher than the slope after being stabilized, the PLC or the industrial personal computer excludes the initial and later substantially horizontal curves in the rising curve according to the intelligent judgment, selects the curve of the middle section, calculates the mass flow according to the mass divided by the time, and the calculation formula is as follows:
wherein: s is S Q The mass flow is expressed in kg/s; t (T) 1 And T 2 For two end point moments corresponding to the selected middle section curve, the unit is s; w (W) 1 And W is 2 Is T 1 And T 2 The mass corresponding to the moment of the two endpoints is kg; taking production well working oil production for 8 hours as an example, the total liquid amount mass is as follows: 8X 60S Q 。
In this embodiment, the device adopts the principle of volumetric method, the measuring tank 23 is a regular cylinder container with the same bottom cross-sectional area, the measuring tank 23 is placed above the integral weighing module 25, and the controller 1 can record the mass of the measuring tank 23 measured by the integral weighing module 25 per second according to the signal fed back by the integral weighing module 25.
The measuring process and the working principle are as follows:
(1) When the mass flow measurement is started, the first electromagnetic valve 21 is opened, the third electromagnetic valve 26 is opened, the second electromagnetic valve 22 is closed, the produced liquid of the oilfield production well passes through a pipeline, enters the metering tank 23 from the first inlet at the top through a hose, monitors the change of the whole mass of the metering tank 23 through the integral weighing module 25, and starts to form a curve as shown in fig. 3;
(2) After the metering tank 23 is full, the produced liquid of the oilfield production well passes through a second outlet at the upper end of the metering tank 23, passes through a hose and then is discharged to the main pipeline through a third electromagnetic valve 26. At the same time, the mass curve detected by the integral weighing module 25 remains substantially horizontal, since the mass of the liquid in the metering tank 23 is no longer changing;
(3) After a predetermined time has been reached, the second solenoid valve 22 is opened, the tubing pump 24 is started, the first and third solenoid valves 26 are closed, the produced fluid in the metering tank 23 begins to be pumped out into the main tubing, and the graph of fig. 3 continues to be formed.
(4) According to the data of the integral weighing module 25, after the PLC or the industrial personal computer judges that the predetermined minimum mass is reached, the pipeline pump 24 stops working, the first solenoid valve 21 and the third solenoid valve 26 are opened, the second solenoid valve 22 is closed, and the next measuring process is started.
In the embodiment, the automation of the measurement process is realized by carrying out real-time quality monitoring, curve drawing and calculation on the measuring tank, and the accuracy and the efficiency of the measurement on the mass flow of the produced liquid are improved.
Based on the measuring device of the embodiment, the invention also provides an automatic measuring method for the mass flow of the produced liquid of the oilfield production well, which realizes the automatic measurement of the mass flow of the produced liquid of the oilfield production well, and referring to fig. 4, the method comprises the following steps:
s1, controlling the first electromagnetic valve and the third electromagnetic valve to be started through a controller, and closing the second electromagnetic valve to enable produced liquid to be discharged into a metering tank through the first electromagnetic valve; the integral weighing module is used for monitoring the mass change data of the whole metering tank;
s2, when the overall quality data of the metering tank is not changed any more and the preset duration is reached, determining that the produced liquid is full of the metering tank; the controller controls the second electromagnetic valve and the pipeline pump to start, the first electromagnetic valve and the third electromagnetic valve are closed, and produced liquid enters the main pipeline through the second electromagnetic valve and the pipeline pump;
s3, after the whole mass data of the metering tank is changed to minimum data and the preset time length is reached, the controller controls the pipeline pump to stop working and closes the second electromagnetic valve; circularly executing the steps S1 to S3;
s4, in the process of executing the steps S1-S3, recording the whole mass change data of the metering tank in real time, and generating a graph of time T and mass W; the graph includes a plurality of periodic images;
s5, determining that at least two adjacent periodic images with the same slope exist in the plurality of periodic images; selecting two quality data W of rising slopes in any one period of image 1 And W is 2 And corresponding T 1 And T 2 The method comprises the steps of carrying out a first treatment on the surface of the And calculating the mass flow.
In this embodiment, when mass flow measurement is started, the PLC or the industrial personal computer opens the first electromagnetic valve and the third electromagnetic valve, closes the second electromagnetic valve, and the produced liquid of the oilfield production well passes through the pipeline, enters the metering tank from the upper first inlet through the hose, monitors the change of the overall mass of the metering tank through the integral weighing module, and starts to form a curve as shown in fig. 3;
after the metering tank is full, the produced liquid of the oilfield production well passes through a second outlet at the upper end of the metering tank, passes through a hose and then is discharged to the main pipeline through a third electromagnetic valve. Meanwhile, the mass of the liquid in the metering tank is not changed any more, and the mass curve detected by the integrated weighing module is basically kept horizontal; after a predetermined time has been reached, the second solenoid valve is opened, the tubing pump is started, the first and third solenoid valves are closed, the produced fluid in the metering tank begins to be pumped out into the main tubing, and the curve of FIG. 3 continues to be formed.
According to the data of the integral weighing module 25, after the PLC or the industrial personal computer judges that the preset minimum mass is reached, the pipeline pump stops working, the first electromagnetic valve and the third electromagnetic valve are opened, the second electromagnetic valve 22 is closed, and the next measuring process is started.
When the device starts to measure, after the first electromagnetic valve is opened, the air pressure of the measuring tank is inconsistent with the air pressure in the pipeline, and the air pressure of the measuring tank may be higher or lower, so that the mass rising curve of the measuring tank may be lower or higher than the stable slope, the PLC or the industrial personal computer can select a curve of the middle section according to intelligent judgment, excluding the curves of the initial stage and the later stage of the rising curve, and calculate the mass flow according to the division of the mass by the time. The calculation formula is as follows:
wherein: s is S Q The mass flow is expressed in kg/s; t (T) 1 And T 2 For two end point moments corresponding to the selected middle section curve, the unit is s; w (W) 1 And W is 2 Is T 1 And T 2 The mass corresponding to the moment of the two endpoints is kg;
it will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (4)
1. An automatic measuring device for the mass flow rate of produced fluid of an oilfield production well, which is characterized by comprising: a controller (1) and a measuring device body (2);
the measuring device body (2) includes: the device comprises a first electromagnetic valve (21), a second electromagnetic valve (22), a metering tank (23), a pipeline pump (24), an integrated weighing module (25) and a third electromagnetic valve (26);
wherein: the controller (1) is respectively connected with the first electromagnetic valve (21), the second electromagnetic valve (22), the pipeline pump (24) and the third electromagnetic valve (26) in a control manner; the controller (1) is in communication connection with the integrated weighing module (25);
the metering tank (23) is arranged above the integrated weighing module (25);
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 metering tank (23);
the input end of the second electromagnetic valve (22) is connected with a first outlet at the bottom of the metering tank (23), the output end of the second electromagnetic valve is connected with one end of the pipeline pump (24), and a three-way pipe fitting is further arranged on a pipeline of which the other end of the pipeline pump (24) is connected with the output main pipeline;
the first end of the three-way 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 output end of a third electromagnetic valve (26), and the input end of the third electromagnetic valve (26) is connected with the second outlet at the upper end of the metering tank (23);
the third end of the three-way pipe fitting is connected with the main output pipe;
wherein, the connecting pipelines of the first inlet, the first outlet and the second outlet are all flexible pipes; the hose is connected with pipelines where the first electromagnetic valve (21), the second electromagnetic valve (22) and the third electromagnetic valve (26) are respectively located through flanges;
the process for measuring the quality of produced fluid of the oilfield production well is as follows:
s1, controlling the first electromagnetic valve and the third electromagnetic valve to be started through a controller, and closing the second electromagnetic valve to enable produced liquid to be discharged into a metering tank through the first electromagnetic valve; the integral weighing module is used for monitoring the mass change data of the whole metering tank;
s2, when the overall quality data of the metering tank is not changed any more and the preset duration is reached, determining that the produced liquid is full of the metering tank; the controller controls the second electromagnetic valve and the pipeline pump to start, the first electromagnetic valve and the third electromagnetic valve are closed, and produced liquid enters the main pipeline through the second electromagnetic valve and the pipeline pump;
s3, after the whole mass data of the metering tank is changed to minimum data and the preset time length is reached, the controller controls the pipeline pump to stop working and closes the second electromagnetic valve; circularly executing the steps S1 to S3;
s4, in the process of executing the steps S1-S3, recording the whole mass change data of the metering tank in real time, and generating a graph of time T and mass W; the graph includes a plurality of periodic images;
s5, determining that at least two adjacent periodic images with the same slope exist in the plurality of periodic images; selecting two quality data W of rising slopes in any one period of image 1 And W is 2 And corresponding T 1 And T 2 The method comprises the steps of carrying out a first treatment on the surface of the Calculating mass flow; the calculation formula is as follows:
wherein: s is S Q The mass flow is expressed in kg/s; t (T) 1 And T 2 For two end point moments corresponding to the selected middle section curve, the unit is s; w (W) 1 And W is 2 Is T 1 And T 2 The unit of the mass corresponding to the moment of the two endpoints is kg.
2. An automatic measuring device for the mass flow of produced fluid of an oilfield production well according to claim 1, wherein the controller (1) is a PLC controller or an industrial personal computer.
3. An automatic measuring device for the mass flow of produced fluid of an oilfield production well according to claim 2, wherein 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.
4. An automated oilfield production well produced fluid mass flow measurement device as defined in claim 3, wherein the wireless communication module comprises one or more of:
WIFI module, public mobile communication network communication module, bluetooth module, near field communication module.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA264123A (en) * | 1926-09-07 | M. Spitzglass Jacob | Fluid meter | |
| US4718443A (en) * | 1987-02-06 | 1988-01-12 | Conoco Inc. | Mass flowmeter apparatus |
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| WO2011143084A1 (en) * | 2010-05-12 | 2011-11-17 | Rosemount, Inc. | Multiphase flowmeter with batch separation |
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| CN209444300U (en) * | 2019-08-01 | 2019-09-27 | 西南石油大学 | A kind of drilling fluid well head mass flow monitoring device |
| CN211008615U (en) * | 2019-11-01 | 2020-07-14 | 南京瑞路通达信息技术有限公司 | Automatic measuring device for mass flow of produced liquid of oil field production well |
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