CN113863918A - Beam-pumping unit balance rate monitoring method and device based on electric energy method - Google Patents
Beam-pumping unit balance rate monitoring method and device based on electric energy method Download PDFInfo
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- CN113863918A CN113863918A CN202111252677.0A CN202111252677A CN113863918A CN 113863918 A CN113863918 A CN 113863918A CN 202111252677 A CN202111252677 A CN 202111252677A CN 113863918 A CN113863918 A CN 113863918A
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- 238000005086 pumping Methods 0.000 title claims abstract description 102
- 238000000034 method Methods 0.000 title claims abstract description 48
- 238000012544 monitoring process Methods 0.000 title claims abstract description 20
- 239000000725 suspension Substances 0.000 claims abstract description 89
- 238000005265 energy consumption Methods 0.000 claims abstract description 24
- 238000012806 monitoring device Methods 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 description 5
- 230000000630 rising effect Effects 0.000 description 5
- 238000003708 edge detection Methods 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
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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
- E21B47/008—Monitoring of down-hole pump systems, e.g. for the detection of "pumped-off" conditions
- E21B47/009—Monitoring of walking-beam pump systems
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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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/126—Adaptations of down-hole pump systems powered by drives outside the borehole, e.g. by a rotary or oscillating drive
- E21B43/127—Adaptations of walking-beam pump systems
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- Engineering & Computer Science (AREA)
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- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
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Abstract
The application provides a beam-pumping unit balance rate monitoring method and device based on an electric energy method, comprising the following steps: the method comprises the steps of collecting suspension point angle change data by using an angle sensor, measuring energy consumption of a motor of the pumping unit by using an electric energy meter, judging the running direction of a suspension point according to the suspension point angle change data, obtaining uplink electric energy and downlink electric energy of the motor of the pumping unit by combining the energy consumption data, and calculating the balance rate of the beam pumping unit by using a formula. The method solves the problem that the judgment is inaccurate easily when the balance rate of the beam-pumping unit is measured by the traditional current method.
Description
Technical Field
The application relates to the field of pumping unit monitoring, in particular to a method and a device for monitoring the balance rate of a beam pumping unit based on an electric energy method.
Background
The load of the motor of the beam pumping unit on the up stroke and the down stroke is very uneven, meanwhile, the change of the suspension point speed and the acceleration can accelerate the unevenness of the load, the unevenness of the load can seriously affect the service life of the four-bar mechanism, the reduction gearbox and the motor, the working condition of the sucker rod is worsened, and the risk of the fracture of the sucker rod is increased. Therefore, the balance of the beam-pumping unit needs to be reasonably adjusted, and the balance rate of the beam-pumping unit needs to be monitored in real time.
The current method is a main method for monitoring the balance rate of the beam pumping at present, is simple and convenient to monitor, uses few tools and is convenient to operate, so that the current method is generally adopted in well sites. However, the current method has a large defect in actual operation, poor accuracy and a false balance problem. The balance of the beam-pumping unit adjusted by taking a current method as a balance judgment standard often causes the phenomenon that the daily power consumption of the pumping unit after adjustment is increased compared with that before adjustment.
In order to solve the problem, the data obtained after the balance rate is monitored by the current method usually needs to be measured for many times or verified by other methods, and the aim of simply, conveniently and accurately monitoring the balance rate of the beam pumping unit cannot be fulfilled.
Disclosure of Invention
The application provides a beam-pumping unit balance rate monitoring method and device based on an electric energy method, and aims to solve the problem that the judgment is inaccurate easily when the traditional judgment of the balance rate of the beam-pumping unit is adopted.
A method for monitoring the balance rate of a beam-pumping unit based on an electric energy method comprises the following steps:
acquiring suspension point angle change data by using an angle sensor, and metering the energy consumption of a motor of the pumping unit by using an electric energy meter;
judging the running direction of the suspension point according to the suspension point angle change data, and obtaining the uplink electric energy and the downlink electric energy of the motor of the pumping unit by combining the energy consumption data;
calculating the balance rate of the beam-pumping unit by using a formula (1):
preferably, the determining the operation direction of the suspension point according to the suspension point angle change data and obtaining the uplink electric energy and the downlink electric energy of the motor of the pumping unit by combining the energy consumption data comprises:
judging the running direction of the suspension point according to the suspension point angle change data;
when the suspension point does uplink motion, identifying an active pulse signal of the electric energy meter, and metering uplink electric energy of the suspension point by using a first addition counter;
and when the suspension point does downlink motion, identifying an active pulse signal of the electric energy meter, and metering downlink electric energy of the suspension point by using a second addition counter.
Preferably, the determining the running direction of the suspension point according to the suspension point angle change data includes:
setting the range of the stroke from the bottom dead center to the top dead center of the beam pumping unit to be 0-100, the range of the lower dead zone to be 0-2 and the range of the upper dead zone to be 98-100;
obtaining the suspension point position Pos of the beam pumping unit by using the suspension point angle change data;
judging whether the suspension point is positioned in an upper dead zone or a lower dead zone or not by using the suspension point position Pos, if so, detecting a falling edge signal, otherwise, repeating the step;
if the suspension point is located in a lower dead zone and a falling edge signal is detected, judging that the suspension point enters uplink motion; and if the suspension point is positioned in the upper dead zone and the falling edge signal is detected, judging that the suspension point enters into the downlink motion.
In the technical scheme that this application provided, still provide a beam-pumping unit equilibrium rate monitoring devices based on electric energy method, include: the device comprises an angle sensor, an electric energy meter and a PLC processing module;
the angle sensor is used for acquiring suspension point angle change data and sending the suspension point angle change data to the PLC processing module;
the electric energy meter is used for metering the energy consumption of the motor of the oil pumping unit and sending the energy consumption to the PLC processing module;
the PLC processing module is used for receiving the suspension point angle change data and the energy consumption data, judging the running direction of the suspension point by using the suspension point angle change data, obtaining uplink electric energy and downlink electric energy of a motor of the beam-pumping unit by combining the energy consumption data, and calculating the balance rate of the beam-pumping unit by using a formula (1):
preferably, the angle sensor is installed at the center of the walking beam, and the side surface of the angle sensor is perpendicular to the rotation axis of the walking beam.
Preferably, the device for monitoring the balance rate of the beam-pumping unit based on the electric energy method further comprises a human-computer interface, which is used for displaying the calculated balance rate of the beam-pumping unit.
According to the beam-pumping unit balance rate monitoring method based on the electric energy method, the energy consumption can be collected through the electric energy meter, the suspension point angle change data can be collected through the angle sensor, the PLC processing module can monitor the balance rate of the beam-pumping unit by utilizing the data, and in practical application, the electric energy meter can accurately measure the power consumption of a motor of the beam-pumping unit, so that the problem of false balance in practical application due to the current method can be avoided. For example, a beam pumping unit is considered to be in a balanced state when a split-core ammeter is used to test the balance rate of the beam pumping unit, but actually the beam pumping unit is operated in an unbalanced state. The application provides a technical scheme can assist adjustment beam-pumping unit balance, improves beam-pumping unit equilibrium rate, can effectively prolong beam-pumping unit's life, improves system efficiency, reaches energy-conserving synergistic effect.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic flow chart of a method for monitoring the balance rate of a beam-pumping unit based on an electric energy method;
fig. 2 is a schematic diagram of a beam-pumping unit balance rate monitoring method based on an electric energy method.
Detailed Description
Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following examples do not represent all embodiments consistent with the present application. But merely as exemplifications of systems and methods consistent with certain aspects of the application, as recited in the claims.
In the technical scheme provided by the application, a method for monitoring the balance rate of a beam-pumping unit based on an electric energy method is provided, please refer to fig. 1, which includes:
s1: acquiring suspension point angle change data by using an angle sensor, and metering the energy consumption of a motor of the pumping unit by using an electric energy meter;
s2: judging the running direction of the suspension point according to the suspension point angle change data, and obtaining the uplink electric energy and the downlink electric energy of the motor of the pumping unit by combining the energy consumption data;
s3: calculating the balance rate of the beam-pumping unit by using a formula (1):
further, the determining the operating direction of the suspension point according to the suspension point angle change data and obtaining the uplink electric energy and the downlink electric energy of the motor of the pumping unit by combining the energy consumption data comprises:
judging the running direction of the suspension point according to the suspension point angle change data;
when the suspension point does uplink motion, identifying an active pulse signal of the electric energy meter, and metering uplink electric energy of the suspension point by using a first addition counter;
and when the suspension point does downlink motion, identifying an active pulse signal of the electric energy meter, and metering downlink electric energy of the suspension point by using a second addition counter.
Further, determining the running direction of the suspension point according to the suspension point angle change data includes:
setting the range of the stroke from the bottom dead center to the top dead center of the beam pumping unit to be 0-100, the range of the lower dead zone to be 0-2 and the range of the upper dead zone to be 98-100;
obtaining the suspension point position Pos of the beam pumping unit by using the suspension point angle change data;
judging whether the suspension point is positioned in an upper dead zone or a lower dead zone or not by using the suspension point position Pos, if so, detecting a falling edge signal, otherwise, repeating the step;
if the suspension point is located in a lower dead zone and a falling edge signal is detected, judging that the suspension point enters uplink motion; and if the suspension point is positioned in the upper dead zone and the falling edge signal is detected, judging that the suspension point enters into the downlink motion.
In the technical scheme that this application provided, still provide a beam-pumping unit balance rate monitoring devices based on electric energy method, include: the device comprises an angle sensor, an electric energy meter and a PLC processing module;
the angle sensor is used for acquiring suspension point angle change data and sending the suspension point angle change data to the PLC processing module;
the electric energy meter is used for metering the energy consumption of the motor of the oil pumping unit and sending the energy consumption to the PLC processing module;
the PLC processing module is used for receiving the suspension point angle change data and the energy consumption data, judging the running direction of the suspension point by using the suspension point angle change data, obtaining uplink electric energy and downlink electric energy of a motor of the beam-pumping unit by combining the energy consumption data, and calculating the balance rate of the beam-pumping unit by using a formula (1):
furthermore, the angle sensor is installed in the center of the walking beam, and the side surface of the angle sensor is perpendicular to the rotation axis of the walking beam.
Further, a beam-pumping unit balance rate monitoring devices based on electric energy method still includes: and the human-computer interface is used for displaying the calculated balance rate of the beam pumping unit.
In practical application, the PLC processing module is further configured to convert the suspension point angle change data into engineering quantity data. In practical application, please refer to fig. 2, the electric energy meter measures the input electric energy of the pumping unit motor through the current transformer and accesses the active electric energy pulses S + and S-to the digital channel of the programmable logic controller, the counter function of the programmable logic controller is used to measure the active electric energy pulse number, and the active electric energy pulse number is converted into active electric energy through program calculation; the feedback signal of the angle sensor is accessed to an analog input channel of the programmable logic controller, the displacement of the suspension point of the oil pumping unit relative to the bottom dead center is converted through program calculation, and the running direction of the oil pumping unit is judged through program calculation by utilizing displacement data, so that the electric energy in the upper direction and the lower direction is respectively measured.
When judging the motion track of the suspension point of the beam pumping unit, judging the displacement of the suspension point relative to a bottom dead center through a PLC program by a feedback signal of an angle sensor, and counting active pulses of an electric energy meter into an adding and counting instruction 1 of a programmable logic controller for metering the number of pulses of uplink electric energy if the pumping unit is in an uplink state through program judgment; if the pumping unit is in a downlink state, the active pulse of the electric energy meter is counted into an adding and counting instruction 2 of the programmable logic controller for metering the pulse number of the uplink electric energy, so that the uplink electric energy and the downlink electric energy can be obtained by calculating the pulse constant of the energy electric energy meter through a program of the programmable logic controller, and the balance rate of the pumping unit is calculated.
In the technical scheme provided by the application, the judgment principle of the suspension point running direction is as follows:
when the beam pumping unit works normally, because the included angle between the upper dead point and the horizontal plane and the included angle between the lower dead point and the horizontal plane are fixed, the upper limit value and the lower limit value of the feedback current of the angle sensor are also fixed, if the displacement of the pumping unit at the lower dead point is specified to be 0.0 and the displacement of the pumping unit at the upper dead point is specified to be 100.0, the current position Pos of the suspension point of the pumping unit can be determined according to the current feedback value of the angle sensor, wherein,
as the pumping unit operates up and down in a reciprocating mode when in work, the Pos value of the pumping unit is gradually increased from 0.0 to 100.0 when the pumping unit moves up, and the Pos value of the pumping unit is gradually decreased from 100.0 to 0.0 when the pumping unit moves down; if the upper limit is set to be 98.0-100.0 and the lower limit is set to be 0.0-2.0, the running direction of the pumping unit can be judged by using a real number comparison instruction, a rising edge detection instruction and a falling edge detection instruction of the PLC.
Using a real number comparison instruction of the PLC, if Pos is more than 0.0 and less than 2.0, judging that the pumping unit is in a lower dead zone, and only when the pumping unit runs upwards to form the lower dead zone, namely Pos is more than 2.0, detecting a falling edge signal of the lower dead zone by using a PLC falling edge detection instruction; if the pumping unit runs downwards and enters the lower dead zone, the rising edge signal of the lower dead zone is detected, so that the judgment has uniqueness.
Comparing the command by using the real number of the PLC, if Pos is more than 98.0 and less than 100.0, judging that the pumping unit is in an upper dead zone, and only when the pumping unit runs downwards to form the upper dead zone, namely Pos is less than 98.0, detecting a falling edge signal of the upper dead zone by using the PLC falling edge detection command; if the pumping unit runs upwards and enters the upper dead zone, a rising edge signal of the upper dead zone is detected, so that the judgment has uniqueness.
The active pulse signal of the electric energy meter is accessed to a digital quantity input point of the PLC, and when the oil pumping unit is in an uplink state, the pulse signal is input to a first addition counter of the PLC through a rising edge instruction and is used for metering the number of pulses of uplink active electric energy; when the oil pumping unit is in a descending state, the pulse signal is input to a PLC second addition counter through a rising edge instruction and is used for metering the pulse number of the descending active electric energy. For example, if the pulse constant of the electric energy meter is 6400imp/kWh and the multiplying power Irat of the current transformer is 40, the multifunctional electric energy meter can emit 6400 pulses every 40kWh of electric energy, and each pulse has an equivalent of 40/6400 kWh. The uplink electric energy is C1 40/6400kWh, and the downlink electric energy is C2 40/6400 kWh. And in a certain time, the uplink electric energy and the downlink electric energy of the pumping unit are respectively measured, and the balance rate of the pumping unit can be monitored.
The formula for measuring the balance rate by the electric energy method is as follows:
to sum up, the technical scheme that this application provided, based on PLC control and signal processing technique, with the output of multi-functional electric energy meter active electric energy pulse, angle sensor feedback signal access PLC through the procedure processing to show in real time on man-machine interface, can realize based on the electric energy law to the balance rate monitoring of beam-pumping unit, the balance of auxiliary adjustment beam-pumping unit improves the balance rate of beam-pumping unit, reaches the life of extension beam-pumping unit, improves system efficiency, reaches energy-conserving increase effect.
The embodiments provided in the present application are only a few examples of the general concept of the present application, and do not limit the scope of the present application. Any other embodiments extended according to the scheme of the present application without inventive efforts will be within the scope of protection of the present application for a person skilled in the art.
Claims (6)
1. A method for monitoring the balance rate of a beam-pumping unit based on an electric energy method is characterized by comprising the following steps:
acquiring suspension point angle change data by using an angle sensor, and metering the energy consumption of a motor of the pumping unit by using an electric energy meter;
judging the running direction of the suspension point according to the suspension point angle change data, and obtaining the uplink electric energy and the downlink electric energy of the motor of the pumping unit by combining the energy consumption data;
calculating the balance rate of the beam-pumping unit by using a formula (1):
2. the method for monitoring the balance rate of the beam-pumping unit based on the electric energy method according to claim 1, characterized in that:
the step of judging the operation direction of the suspension point according to the suspension point angle change data and obtaining the uplink electric energy and the downlink electric energy of the motor of the pumping unit by combining the energy consumption data comprises the following steps:
judging the running direction of the suspension point according to the suspension point angle change data;
when the suspension point does uplink motion, identifying an active pulse signal of the electric energy meter, and metering uplink electric energy of the suspension point by using a first addition counter;
and when the suspension point does downlink motion, identifying an active pulse signal of the electric energy meter, and metering downlink electric energy of the suspension point by using a second addition counter.
3. The method for monitoring the balance rate of the beam-pumping unit based on the electric energy method as claimed in claim 2, wherein:
determining the running direction of the suspension point according to the suspension point angle change data comprises:
setting the range of the stroke from the bottom dead center to the top dead center of the beam pumping unit to be 0-100, the range of the lower dead zone to be 0-2 and the range of the upper dead zone to be 98-100;
obtaining the suspension point position Pos of the beam pumping unit by using the suspension point angle change data;
judging whether the suspension point is positioned in an upper dead zone or a lower dead zone or not by using the suspension point position Pos, if so, detecting a falling edge signal, otherwise, repeating the step;
if the suspension point is located in a lower dead zone and a falling edge signal is detected, judging that the suspension point enters uplink motion; and if the suspension point is positioned in the upper dead zone and the falling edge signal is detected, judging that the suspension point enters into the downlink motion.
4. The utility model provides a beam-pumping unit balance rate monitoring devices based on electric energy method which characterized in that includes: the device comprises an angle sensor, an electric energy meter and a PLC processing module;
the angle sensor is used for acquiring suspension point angle change data and sending the suspension point angle change data to the PLC processing module;
the electric energy meter is used for metering the energy consumption of the motor of the oil pumping unit and sending the energy consumption to the PLC processing module;
the PLC processing module is used for receiving the suspension point angle change data and the energy consumption data, judging the running direction of the suspension point by using the suspension point angle change data, obtaining uplink electric energy and downlink electric energy of a motor of the beam-pumping unit by combining the energy consumption data, and calculating the balance rate of the beam-pumping unit by using a formula (1):
5. the device for monitoring the balance rate of the beam-pumping unit based on the electric energy method as claimed in claim 4, wherein: the angle sensor is installed in walking beam central part, angle sensor's side with walking beam axis of rotation is mutually perpendicular.
6. The device for monitoring the balance rate of the beam-pumping unit based on the electric energy method as claimed in claim 4, wherein: and the human-computer interface is used for displaying the calculated balance rate of the beam pumping unit.
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| CN113863918B (en) | 2023-12-29 |
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