Oil well detection equipment

Abstract

The present application provides an oil well detection device, which belongs to the field of automation technology. The device includes: a single-well oil collection pipeline, an oil pumping unit, a temperature sensor, a current transformer, a controller and an industrial computer; the temperature sensor is respectively connected to the end of the single-well oil collection pipeline and the controller, the current transformer is respectively connected to the oil pumping unit and the controller, and the controller is connected to the industrial computer. The temperature sensor is used to periodically collect the temperature signal at the end of the single-well oil collection pipeline, and send the collected multiple temperature signals to the controller; the current transformer is used to periodically collect the current signal of the oil pumping unit, and send the collected multiple current signals to the controller. The controller determines the detection results of the single-well oil collection pipeline and the oil pumping unit through the received multiple temperature signals and multiple current signals, and outputs the detection results of the single-well oil collection pipeline and the oil pumping unit through the industrial computer. The device improves the detection efficiency of oil well fault detection.

Description

Technical Field

[0001] The present application relates to the field of automation technology, and in particular to an oil well detection device. Background Art

[0002] During the production process of an oil well, a pump is used to extract the oil in the well, and a pipeline is used to transport the extracted oil. When the pipeline leaks or the pump fails, it will have a great impact on the normal production of the oil well. Therefore, it is generally necessary to set up an oil well detection device to detect the working conditions of the pipeline and the pump to determine whether the pipeline is leaking or the pump fails.

[0003] In the related art, the oil well detection device generally includes a first detection unit and a second detection unit; the first detection unit generally collects flow signals and pressure signals at both ends of the pipeline for comparison to determine whether the pipeline is leaking. There are multiple sensors installed in the oil well, and the second detection unit obtains the indicator diagram of the oil pump through multiple sensors. The staff determines whether the oil pump is faulty by analyzing the indicator diagram.

[0004] Since the staff can only determine whether the pumping unit has a fault by analyzing the data on the indicator diagram, the process is complicated and time-consuming, which reduces the efficiency of detecting pumping unit faults and further reduces the efficiency of detecting oil well faults. Summary of the invention

[0005] The embodiment of the present application provides an oil well detection device, which can improve the detection efficiency of oil well failures. The technical solution is as follows:

[0006] On the one hand, an oil well detection device is provided, the device comprising: a single well oil gathering pipeline, a pumping unit, a temperature sensor, a current transformer, a controller and an industrial computer;

[0007] The temperature sensor is connected to the end of the single well oil collection pipeline and the controller respectively, the current transformer is connected to the pumping unit and the controller respectively, and the controller is connected to the industrial computer;

[0008] The temperature sensor is used to periodically collect temperature signals at the end of the single well oil collection pipeline and send the collected multiple temperature signals to the controller;

[0009] The current transformer is used to periodically collect current signals of the oil pumping unit and send the collected multiple current signals to the controller;

[0010] The controller is used to receive the multiple temperature signals and the multiple current signals, and when the temperature values ​​corresponding to the multiple temperature signals are all lower than the preset temperature value, and the current values ​​corresponding to the multiple current signals are all within the preset current value range, and the total sampling time of the multiple temperature signals exceeds the preset time, it is determined that the detection result of the single-well oil gathering pipeline is a leakage; when the current values ​​corresponding to the multiple current signals are all not within the preset current value range, and the total sampling time of the multiple current signals exceeds the preset time, it is determined that the detection result of the oil pump is a fault, and the detection result of the single-well oil gathering pipeline and the detection result of the oil pump are sent to the industrial computer;

[0011] The industrial computer is used to receive the detection result of the single well oil collecting pipe and the detection result of the oil pumping unit, and output the detection result of the single well oil collecting pipe and the detection result of the oil pumping unit.

[0012] In a possible implementation, the device further includes: a temperature transmitter;

[0013] The temperature transmitter is connected to the temperature sensor and the controller respectively;

[0014] The temperature transmitter is used to receive a plurality of temperature signals sent by the temperature sensor, convert the plurality of temperature signals into current signals in a first preset format, and send the current signals in the first preset format to the controller.

[0015] In a possible implementation, the device further includes a safety barrier, and the safety barrier is connected to the temperature transmitter and the controller respectively;

[0016] The safety gate is used to scale the current signal of the first preset format sent by the temperature sensor, and send the scaled current signal to the controller;

[0017] The current value corresponding to the scaled current signal is within the current value range acceptable to the controller.

[0018] In a possible implementation, the device further includes: a current transmitter;

[0019] The current transmitter is connected to the current transformer and the controller respectively;

[0020] The current transmitter is used to receive a plurality of current signals transmitted by the current transformer, convert the plurality of current signals into current signals in a second preset format, and send the current signals in the second preset format to the controller.

[0021] In a possible implementation manner, the current transmitter and the controller are connected in a wireless bridge manner, so that the current signal in the second preset format is sent to the controller through the wireless bridge.

[0022] In a possible implementation, a temperature socket is provided at the end of the single-well oil gathering pipeline, and the temperature sensor is installed in the temperature socket to collect a temperature signal at the end of the single-well oil gathering pipeline.

[0023] In a possible implementation, configuration software is installed on the industrial computer, and the industrial computer is provided with a display;

[0024] The configuration software is used to monitor the working condition of the oil well and send the working condition of the oil well to the display;

[0025] The display is used to display the working status of the oil well, as well as the detection results of the single well oil collecting pipe and the detection results of the pumping unit.

[0026] In a possible implementation, the oil pumping unit includes a motor, a sucker rod, a belt and a donkey head;

[0027] The sucker rod is connected to the motor through the donkey head;

[0028] The motor transmits power to the donkey head through the belt, and the donkey head drives the sucker rod upward or downward;

[0029] When the sucker rod moves upward or downward, the current value of the motor changes periodically, and the current transformer collects the current signal of the motor.

[0030] In a possible implementation, when the detection result of the oil pumping unit is a fault, the detection result of the oil pumping unit includes at least one of a motor burnout, a sucker rod breakage, a belt burnout, and a sucker rod wax jam.

[0031] In a possible implementation, the preset current value range is between a first preset current value and a second preset current value, and the first preset current value is smaller than the second preset current value;

[0032] When the current values ​​corresponding to the multiple current signals are zero, and the total sampling time of the multiple current signals exceeds a first preset time, determining that the detection result of the oil pump is that the motor is burned out;

[0033] When the current values ​​corresponding to the multiple current signals are lower than the first preset current value, and the total sampling time of the multiple current signals exceeds the second preset time, it is determined that the detection result of the oil pump is that the belt is burned;

[0034] When the current values ​​corresponding to the multiple current signals are higher than the second preset current value, and the total sampling time of the multiple current signals exceeds the third preset time, it is determined that the detection result of the pumping unit is the sucker rod wax jam;

[0035] When the current values ​​corresponding to the multiple current signals are lower than the first preset current values, the first sampling time length of the multiple current signals exceeds the fourth preset time length, and the current values ​​corresponding to the multiple current signals are higher than the second preset current value, the second sampling time length of the multiple current signals exceeds the fifth preset time length, and the total sampling time length consisting of the first sampling time length and the second sampling time length exceeds the sixth preset time length, it is determined that the detection result of the pumping unit is that the sucker rod is broken.

[0036] The beneficial effects of the technical solution provided by the embodiments of the present application include at least:

[0037] The embodiment of the present application provides an oil well detection device. Since the temperature sensor of the device is connected to the single-well oil gathering pipeline, and the current transformer is connected to the oil pumping unit, the controller can obtain the temperature signal of the single-well oil gathering pipeline through the temperature sensor, and obtain the current signal of the oil pumping unit through the current transformer. The temperature signal of the single-well oil gathering pipeline and the current signal of the oil pumping unit can respectively reflect whether the single-well oil gathering pipeline is faulty and whether the oil pumping unit is faulty. Therefore, the controller can determine the detection result of the single-well oil gathering pipeline and the detection result of the oil pumping unit through the temperature signal and the current signal, without the participation of staff, and the process is simple, saving time and effort, thereby improving the detection efficiency of oil well fault detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0039] Figure 1 is a structural diagram of an oil well detection device provided in an embodiment of the present application;

[0040] Figure 2 It is a structural diagram of another oil well detection device provided in an embodiment of the present application.

[0041] The reference numerals in the figures represent respectively:

[0042] 1-Single well oil gathering pipeline;

[0043] 2- Pumping unit;

[0044] 201-electric motor;

[0045] 202-Sucker rod;

[0046] 203- belt;

[0047] 204-donkey head;

[0048] 205-hanging rope device;

[0049] 206-wire rope;

[0050] 207-Youliang;

[0051] 208-crank;

[0052] 209-reduction gearbox;

[0053] 3- Temperature sensor;

[0054] 4- Current transformer;

[0055] 5- Controller;

[0056] 6-Industrial computer;

[0057] 601-display;

[0058] 7- Temperature transmitter;

[0059] 8-Safety barrier;

[0060] 9- Current transmitter. DETAILED DESCRIPTION

[0061] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0062] The terms "first", "second", "third" and "fourth" etc. in the specification and claims of the present application and the drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0063] The present application embodiment provides an oil well detection device, see Figure 1The device includes: a single-well oil gathering pipeline 1, an oil pumping unit 2, a temperature sensor 3, a current transformer 4, a controller 5 and an industrial computer 6; the temperature sensor 3 is respectively connected to the end of the single-well oil gathering pipeline 1 and the controller 5, the current transformer 4 is respectively connected to the oil pumping unit 2 and the controller 5, and the controller 5 is connected to the industrial computer 6; the temperature sensor 3 is used to periodically collect the temperature signal at the end of the single-well oil gathering pipeline 1, and send the collected multiple temperature signals to the controller 5; the current transformer 4 is used to periodically collect the current signal of the oil pumping unit 2, and send the collected multiple current signals to the controller 5.

[0064] The controller 5 is used to receive multiple temperature signals and multiple current signals. When the temperature values ​​corresponding to the multiple temperature signals are all lower than the preset temperature value, and the current values ​​corresponding to the multiple current signals are all within the preset current value range, and the total sampling time of the multiple temperature signals exceeds the preset time, it is determined that the detection result of the single-well oil gathering pipeline 1 is a leakage; when the current values ​​corresponding to the multiple current signals are not within the preset current value range, and the total sampling time of the multiple current signals exceeds the preset time, it is determined that the detection result of the oil pump 2 is a fault, and the detection results of the single-well oil gathering pipeline 1 and the detection results of the oil pump 2 are sent to the industrial computer 6.

[0065] The industrial computer 6 is used to receive the detection results of the single-well oil gathering pipeline 1 and the detection results of the oil pumping unit 2, and output the detection results of the single-well oil gathering pipeline 1 and the detection results of the oil pumping unit 2.

[0066] The embodiment of the present application provides an oil well detection device. Since the temperature sensor 3 of the device is connected to the single-well oil gathering pipeline 1, and the current transformer 4 is connected to the oil pump 2, the controller 5 can obtain the temperature signal of the single-well oil gathering pipeline 1 through the temperature sensor 3, and obtain the current signal of the oil pump 2 through the current transformer 4. The temperature signal of the single-well oil gathering pipeline 1 and the current signal of the oil pump 2 can respectively reflect whether the single-well oil gathering pipeline 1 is faulty and whether the oil pump 2 is faulty. Therefore, the controller 5 can determine the detection results of the single-well oil gathering pipeline 1 and the detection results of the oil pump 2 through the temperature signal and the current signal, without the participation of staff, the process is simple, time-saving and labor-saving, thereby improving the detection efficiency of oil well fault detection.

[0067] See also Figure 2 The temperature sensor 3 is connected to the end of the single-well oil gathering pipeline 1 and the controller 5 respectively; the temperature sensor 3 is used to periodically collect the temperature signal of the end of the single-well oil gathering pipeline 1 and send the collected multiple temperature signals to the controller 5.

[0068] The end of the single-well oil gathering pipeline 1 is located in the metering room of the oil well. A temperature jack is provided at the end of the single-well oil gathering pipeline 1. The temperature sensor 3 is installed in the temperature jack to collect the temperature signal at the end of the single-well oil gathering pipeline 1.

[0069] Among them, the time interval for the temperature sensor 3 to periodically collect the temperature signal can be 1 second, 2 seconds, 3 seconds, etc. In the embodiment of the present application, it can be set and changed as needed and is not specifically limited here.

[0070] Among them, the model of the temperature sensor 3 can be WZCB, which is not specifically limited in the embodiment of the present application.

[0071] In the embodiment of the present application, by providing a temperature sensor 3 connected to the single-well oil gathering pipeline 1 and the controller 5 respectively, the temperature of the single-well oil gathering pipeline 1 can be sent to the controller 5, and then the controller 5 can receive the temperature signal of the single-well oil gathering pipeline 1.

[0072] Continue to see Figure 2 The device also includes a temperature transmitter 7, which is connected to the temperature sensor 3 and the controller 5 respectively; the temperature transmitter 7 is used to receive multiple temperature signals sent by the temperature sensor 3, convert the multiple temperature signals into current signals in a first preset format, and send the current signals in the first preset format to the controller 5.

[0073] In another possible implementation, the temperature sensor 3 is an integrated temperature sensor 3, and the temperature transmitter 7 is arranged inside the temperature sensor 3. The temperature transmitter 7 can directly convert the collected multiple temperature signals into current signals in a first preset format, and send the current signals in the first preset format to the controller 5.

[0074] The current signal in the first preset format may be a 4-20 mA current signal, that is, the temperature transmitter 7 converts a plurality of temperature signals into a current signal that can be received by the controller 5 .

[0075] In the embodiment of the present application, by setting up the temperature transmitter 7, the temperature signal collected by the temperature sensor 3 can be converted into a current signal that can be received by the controller 5, so that the controller 5 can obtain the temperature value of the single well oil gathering pipeline 1 based on the received current signal.

[0076] Continue to see Figure 2 The device also includes a safety barrier 8, which is connected to the temperature transmitter 7 and the controller 5 respectively; the safety barrier 8 is used to proportionally scale the current signal of the first preset format sent by the temperature sensor 3, and send the scaled current signal to the controller 5.

[0077] The current value corresponding to the scaled current signal is within the current value range that the controller 5 can accept.

[0078] The temperature transmitter 7 is connected to the safety barrier 8 via a signal line, and the safety barrier 8 is connected to the controller 5 via a signal line. By using the signal line connection, the reliability of the transmitted signal is higher.

[0079] In a possible implementation, an alarm indicator light is provided on the safety barrier 8. When the safety barrier 8 fails and cannot scale the current signal of the first preset format, the alarm indicator light is on, thereby improving the safety of the controller 5 circuit.

[0080] Among them, the safety barrier 8 can be a one-to-two safety barrier 8, and the model of the one-to-two safety barrier 8 can be KFD2-STC4-EX1.2O-Y122583. In the embodiment of the present application, no specific limitation is made to this.

[0081] In the embodiment of the present application, by setting the safety gate 8, the current signal of the first preset format sent by the temperature sensor 3 is scaled proportionally, so that the current value received by the controller 5 is within the range that the controller 5 can receive, effectively ensuring the circuit safety of the controller 5.

[0082] Continue to see Figure 2 , the current transformer 4 is connected to the oil pump 2 and the controller 5 respectively; the current transformer 4 is used to periodically collect the current signal of the oil pump 2 and send the collected multiple current signals to the controller 5.

[0083] Among them, the current transformer 4 is installed in the power distribution cabinet of the oil pumping unit 2 and connected to the oil pumping unit 2 to collect the current signal of the oil pumping unit 2. The current transformer 4 is composed of a closed iron core and a winding, and the center is a through hole. When the current-carrying wire of the oil pumping unit 2 passes through the through hole, the current transformer 4 can collect the current signal of the wire, and then obtain the current signal of the oil pumping unit 2.

[0084] The model of the current transformer 4 may be LM-0.5, which is not specifically limited in the embodiment of the present application.

[0085] Among them, the time interval for the current transformer 4 to periodically collect the current signal can be 1 second, 2 seconds, 3 seconds, etc. In the embodiment of the present application, it can be set and changed as needed, and is not specifically limited here.

[0086] Continue to see Figure 2 The device also includes a current transmitter 9, which is connected to the current transformer 4 and the controller 5 respectively; the current transmitter 9 is used to receive multiple current signals transmitted by the current transformer 4, convert the multiple current signals into current signals in a second preset format, and send the current signals in the second preset format to the controller 5.

[0087] The current signal in the second preset format is a 4-20 mA current signal.

[0088] Among them, the current transmitter 9 is installed in the distribution cabinet of the oil pump 2, and is connected to the current transformer 4 and the controller 5 respectively. After receiving multiple current signals sent by the current transformer 4, the current transmitter 9 can convert the multiple current signals into 4-20mA current signals. The 4-20mA current signal is the current range that the controller 5 can receive, so that the current signal received by the controller 5 is within the receivable current range, thereby ensuring the circuit safety of the controller 5.

[0089] Among them, the model of the current transmitter 9 can be JA97741, and in the embodiment of the present application, there is no specific limitation on this.

[0090] In a possible implementation, the current transmitter 9 and the controller 5 are connected in a wireless bridge manner, so that the current signal in the second preset format is sent to the controller 5 through the wireless bridge.

[0091] Among them, the connection method of the wireless bridge is to use wireless transmission to build a communication channel between two or more networks. In the embodiment of the present application, the connection method of the wireless bridge not only saves the early wiring project, but also has highly flexible operation. The controller 5 can be located within any effective distance to receive the current signal sent by the current transmitter 9.

[0092] In another possible implementation, an RTU (Remote Terminal Unit) connection mode is adopted between the current transmitter 9 and the controller 5, so that the current signal in the second preset format is sent to the controller 5 through the RTU. Among them, the RTU connection mode has a long communication distance and can provide multiple communication ports at the same time, thereby being able to adapt to different communication requirements of oil wells.

[0093] In the embodiment of the present application, since the current transformer 4 directly measures the current of the oil pump 2, the measured current is relatively high. If they are not isolated and the amplitude is not reduced, it will pose a threat to the normal operation of the controller 5 after being sent to the controller 5. In serious cases, the controller 5 may even be burned, thereby causing a safety hazard. Therefore, by setting up a current transmitter 9, different measured current values ​​can be converted into corresponding output current values, wherein the output current value range is 4-20mA, so that the current value sent to the controller 5 is within the current value range that the controller 5 can accept, thereby ensuring the circuit safety of the controller 5.

[0094] Continue to see Figure 2The pumping unit 2 includes a motor 201, a sucker rod 202, a belt 203 and a donkey head 204. The sucker rod 202 is connected to the motor 201 through the donkey head 204. The motor 201 sends power to the donkey head 204 through the belt 203. The donkey head 204 drives the sucker rod 202 upward or downward. When the sucker rod 202 moves upward or downward, the current value of the motor 201 changes periodically, and the current transformer 4 collects the current signal of the motor 201.

[0095] Among them, the pumping unit 2 also includes a suspension rope 205 and a wire rope 206. The sucker rod 202 is suspended below the donkey head 204 through the wire rope 206 and the suspension rope 205. One end of the sucker rod 202 is set on the suspension rope 205. The suspension rope 205 is connected to the donkey head 204 through the wire rope 206, thereby realizing the connection between the sucker rod 202 and the donkey head 204.

[0096] Among them, the oil pump 2 also includes a rocker 207, a crank 208 and a reduction gearbox 209, and the donkey head 204, the rocker 207, the crank 208, the reduction gearbox 209 and the motor 201 are connected in sequence, the motor 201 is connected to the reduction gearbox 209 through a belt 203, and the reduction gearbox 209 is connected to the donkey head 204 through the crank 208 and the rocker 207, thereby realizing the connection between the donkey head 204 and the motor 201.

[0097] When the oil pump 2 is working, the motor 201 transmits power to the belt 203, the reduction box 209, the crank 208, the walking beam 207 and the donkey head 204 in sequence, and then through the connection between the donkey head 204 and the sucker rod 202, the donkey head 204 drives the sucker rod 202 to move up or down in the oil well.

[0098] Among them, when the sucker rod 202 goes up or down in the oil well, one up plus one down is considered as one stroke. The strokes of the sucker rod 202 within 1 minute can be 1 time, 2 times, 3 times or 4 times, etc. The sucker rod 202 is in the oil pumping state during the upward process, and the current value of the motor 201 gradually increases from a certain value to a maximum value; when the sucker rod 202 is in the downward process, the sucker rod 202 performs free fall motion under the action of its own gravity, and at this time the current value of the motor 201 also gradually increases from a certain value to a maximum value and then decreases. It can be seen that during the upward or downward process of the sucker rod 202, that is, when the pumping unit 2 works normally, the current value of the motor 201 changes periodically, and the current value of the motor 201 remains within the normal range; and when the motor 201 is not working, the current of the motor 201 continues to be zero.

[0099] The current transformer 4 is connected to the wire of the motor 201 , and the wire of the motor 201 passes through the through hole of the current transformer 4 , so that the current transformer 4 can collect the current signal of the motor 201 .

[0100] Continue to see Figure 2 The controller 5 is connected to the temperature sensor 3 and the current transformer 4 respectively, and is used to receive multiple temperature signals and multiple current signals. When the temperature values ​​corresponding to the multiple temperature signals are all lower than the preset temperature value, and the current values ​​corresponding to the multiple current signals are all within the preset current value range, and the total sampling time of the multiple temperature signals exceeds the preset time, it is determined that the detection result of the single-well oil gathering pipeline 1 is a leakage; when the current values ​​corresponding to the multiple current signals are not within the preset current value range, and the total sampling time of the multiple current signals exceeds the preset time, it is determined that the detection result of the pumping unit 2 is a fault, and the detection results of the single-well oil gathering pipeline 1 and the detection results of the pumping unit 2 are sent to the industrial computer 6. The industrial computer 6 is used to receive the detection results of the single-well oil gathering pipeline and the detection results of the pumping unit 2, and output the detection results of the single-well oil gathering pipeline 1 and the detection results of the pumping unit 2.

[0101] Among them, configuration software is installed on the industrial computer 6; and the industrial computer 6 is provided with a display 601; the configuration software is used to monitor the working condition of the oil well, and send the working condition of the oil well to the display 601; the display 601 is used to display the working condition of the oil well, as well as the detection results of the single well oil collecting pipe and the detection results of the pumping unit 2.

[0102] The controller 5 and the configuration software are installed in the central control room, so that the staff can obtain the temperature signal of the single well oil gathering pipeline 1 and the current signal of the pumping unit 2 at the oil well site through the controller 5 and the configuration software in the central control room without having to go to the construction site.

[0103] The controller 5 is an editable logic controller 5, and the internal program of the controller 5 can be edited and modified as needed, without specific limitation herein.

[0104] Among them, the model of the industrial computer 6 can be IPC-610-L, and in the embodiment of the present application, no specific limitation is made to this.

[0105] In an embodiment of the present application, by setting up configuration software on the working machine, the working site of the single-well oil gathering pipeline 1 and the oil pump 2 can be monitored in real time, so that relevant personnel can timely grasp the working conditions of the single-well oil gathering pipeline 1 and the oil pump 2.

[0106] The preset current value range is between a first preset current value and a second preset current value, and the first preset current value is smaller than the second preset current value.

[0107] Among them, when the oil well is working normally, the current value of the motor 201 is within the preset current value range, the current value of the motor 201 matches the power of the motor 201, the power of the motor 201 of different oil wells is different, and the power of the motor 201 can be set and changed as needed; for example, when the power of the motor 201 is 22KW, the normal working current of the motor 201 is between 20-50A, that is, the preset current value range is 20-50A, then the first preset current value is 20A, and the second preset current value is 50A.

[0108] Among them, during the normal production process of the oil well, after the crude oil is extracted from the bottom layer through the pumping unit 2, it is transported to the metering room of the oil well by the single-well oil gathering pipeline 1 for metering. When the single-well oil gathering pipeline 1 works normally, the temperature of the crude oil transported to the metering room is between 30 degrees and 50 degrees, and the end of the single-well oil gathering pipeline 1 is located in the metering room, then the preset temperature value corresponding to the multiple temperature signals at the end of the single-well oil gathering pipeline 1 is 30 degrees. Therefore, when the temperature values ​​corresponding to the multiple temperature signals are all lower than the preset temperature value, and the current values ​​corresponding to the multiple current signals are all within the preset current value range, and the total sampling time of the multiple temperature signals exceeds the preset time, the controller 5 determines that the detection result of the single-well oil gathering pipeline 1 is a leak.

[0109] For example, when the preset current value range of the oil pump 2 is set to 20-50A and the preset time is 2 minutes, when the temperature values ​​corresponding to the multiple temperature signals are all lower than 30 degrees, and the current values ​​corresponding to the multiple current signals are all within the range of 20-50A, and the total sampling time of the multiple temperature signals exceeds 2 minutes, the controller 5 determines that the detection result of the single-well oil gathering pipeline 1 is a leak, and then the display 601 shows that the single-well oil gathering pipeline 1 is leaking.

[0110] When the detection result of the oil pumping unit 2 is a fault, the detection result of the oil pumping unit 2 includes at least one of a burnout of the motor 201 , a breakage of the pumping rod 202 , a burnout of the belt 203 , and a wax jam of the pumping rod 202 .

[0111] In a possible implementation, when the current values ​​corresponding to the multiple current signals are zero and the total sampling time of the multiple current signals exceeds a first preset time, it is determined that the detection result of the oil pump 2 is that the motor 201 is burned out.

[0112] Among them, the first preset time is set to 20 seconds. When the current values ​​corresponding to multiple current signals are zero and the total sampling time of multiple current signals exceeds 20 seconds, it means that the motor 201 is not working normally. Then the controller 5 determines that the detection result of the oil pump 2 is that the motor 201 is burned out, and then the display 601 shows that the motor 201 is burned out.

[0113] Among them, if the total sampling time exceeds 20 seconds, the total sampling time can be 22 seconds, 24 seconds, 25 seconds, etc.

[0114] In a possible implementation, when the current values ​​corresponding to the multiple current signals are lower than the first preset current value and the total sampling time of the multiple current signals exceeds the second preset time, it is determined that the detection result of the oil pump 2 is that the belt 203 is burned out.

[0115] Among them, the second preset time length is set to 20 seconds, and the first preset current value is 20A. When the current values ​​corresponding to multiple current signals are lower than 20A, and the total sampling time length of multiple current signals exceeds 20 seconds, the controller 5 determines that the detection result of the oil pump 2 is that the belt 203 is burned out, and then the display 601 shows that the belt 203 is burned out.

[0116] Among them, if the current values ​​corresponding to the multiple current signals are lower than 20A, the current values ​​corresponding to the multiple current signals may be 18A, 17A, 15A, etc.

[0117] Among them, if the total sampling time exceeds 20 seconds, the total sampling time can be 23 seconds, 25 seconds, 26 seconds, etc.

[0118] In a possible implementation, when the current values ​​corresponding to the multiple current signals are higher than the second preset current value and the total sampling time of the multiple current signals exceeds the third preset time, it is determined that the detection result of the pumping unit 2 is that the sucker rod 202 is wax stuck.

[0119] When the sucker rod 202 is stuck, the upward or downward movement of the sucker rod 202 is restricted, so that the load at the suspension point of the sucker rod 202 increases, and further the output current value of the motor 201 increases.

[0120] Among them, the third preset time is set to 30 seconds, and the second preset current is 50A. When the current values ​​corresponding to the multiple current signals are higher than 50A, and the total sampling time of the multiple current signals exceeds 30 seconds, the controller 5 determines that the detection result of the pumping unit 2 is that the sucker rod 202 is wax stuck, and then the display 601 displays that the sucker rod 202 is wax stuck.

[0121] Among them, if the current values ​​corresponding to the multiple current signals are higher than 50A, the current values ​​corresponding to the multiple current signals may be 52A, 53A, 55A, etc.

[0122] Among them, if the total sampling time exceeds 30 seconds, the total sampling time can be 35 seconds, 38 seconds, 40 seconds, etc.

[0123] In one possible implementation, when the current values ​​corresponding to multiple current signals are lower than the first preset current value, the first sampling time length of the multiple current signals exceeds the fourth preset time length, and the current values ​​corresponding to the multiple current signals are higher than the second preset current value, the second sampling time length of the multiple current signals exceeds the fifth preset time length, and the total sampling time length composed of the first sampling time length and the second sampling time length exceeds the sixth preset time length, it is determined that the detection result of the pumping unit 2 is that the sucker rod 202 is broken.

[0124] Among them, when the pumping rod 202 is set to have 4 strokes per minute, the up and down time of the pumping rod 202 is 7 seconds respectively, and the fourth preset time and the fifth preset time are 7 seconds respectively. When the pumping rod 202 is in the process of going down, the current values ​​corresponding to the multiple current signals are lower than 20A and exceed 7 seconds; when the pumping rod 202 is in the process of going up, the current values ​​corresponding to the multiple current signals are higher than 50A and exceed 7 seconds, and when the pumping rod 202 is continuously going up or down, the current signal maintains this state for more than 5 minutes, then the controller 5 determines that the detection result of the pumping unit 2 is that the pumping rod 202 is broken, and then the display 601 shows that the pumping rod 202 is broken.

[0125] The working principle of the oil well detection device provided in the embodiment of the present application is:

[0126] When the oil well detection device is working, the temperature sensor 3 collects the temperature signal at the end of the single-well oil gathering pipeline 1 and sends it to the controller 5, and the current sensor 4 collects the current signal of the pumping unit 2 and sends it to the controller 5; the controller 5 analyzes the received temperature signal and current signal, determines the detection result of the single-well oil gathering pipeline 1 and the detection result of the pumping unit 2, and outputs the detection result of the single-well oil gathering pipeline 1 and the detection result of the pumping unit 2 through the display 601 of the industrial computer 6.

[0127] The embodiment of the present application provides an oil well detection device. Since the temperature sensor 3 of the device is connected to the single-well oil gathering pipeline 1, and the current transformer 4 is connected to the oil pump 2, the controller 5 can obtain the temperature signal of the single-well oil gathering pipeline 1 through the temperature sensor 3, and obtain the current signal of the oil pump 2 through the current transformer 4. The temperature signal of the single-well oil gathering pipeline 1 and the current signal of the oil pump 2 can respectively reflect whether the single-well oil gathering pipeline 1 is faulty and whether the oil pump 2 is faulty. Therefore, the controller 5 can determine the detection results of the single-well oil gathering pipeline 1 and the detection results of the oil pump 2 through the temperature signal and the current signal, without the participation of staff, the process is simple, time-saving and labor-saving, thereby improving the detection efficiency of oil well fault detection.

[0128] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An oil well detection device, characterized in that: The device comprises: a single well oil collection pipeline (1), an oil pumping unit (2), a temperature sensor (3), a current transformer (4), a controller (5) and an industrial computer (6); the oil pumping unit (2) comprises an electric motor (201), an oil pumping rod (202), a belt (203) and a donkey head (204); The sucker rod (202) is connected to the motor (201) via the donkey head (204); The motor (201) transmits power to the donkey head (204) through the belt (203), and the donkey head (204) drives the sucker rod (202) upward or downward; When the sucker rod (202) moves upward or downward, the current value of the motor (201) changes periodically; The temperature sensor (3) is connected to the end of the single well oil gathering pipeline (1) and the controller (5) respectively, the current transformer (4) is connected to the pumping unit (2) and the controller (5) respectively, and the controller (5) is connected to the industrial computer (6); The temperature sensor (3) is used to periodically collect temperature signals at the end of the single well oil collection pipeline (1), and send the collected multiple temperature signals to the controller (5); The current transformer (4) is used to periodically collect current signals from the oil pump (2) and send the collected multiple current signals to the controller (5); The controller (5) is used to receive the multiple temperature signals and the multiple current signals, and when the temperature values ​​corresponding to the multiple temperature signals are all lower than a preset temperature value, and the current values ​​corresponding to the multiple current signals are all within a preset current value range, and the total sampling time of the multiple temperature signals exceeds the preset time, it is determined that the detection result of the single-well oil gathering pipeline (1) is a leakage; when the current values ​​corresponding to the multiple current signals are all not within the preset current value range, and the total sampling time of the multiple current signals exceeds the preset time, it is determined that the detection result of the oil pump (2) is a fault, and the detection result of the single-well oil gathering pipeline (1) and the detection result of the oil pump (2) are sent to the industrial computer (6), the preset current value range is between a first preset current value and a second preset current value, and the first preset current value is less than the second preset current value; When the current values ​​corresponding to the multiple current signals are zero and the total sampling time of the multiple current signals exceeds a first preset time, it is determined that the fault detection result of the oil pump (2) is that the motor (201) is burned out; When the current values ​​corresponding to the multiple current signals are lower than the first preset current value, and the total sampling time of the multiple current signals exceeds the second preset time, it is determined that the fault detection result of the oil pump (2) is that the belt (203) is burned out; When the current values ​​corresponding to the multiple current signals are higher than the second preset current value, and the total sampling time of the multiple current signals exceeds a third preset time, it is determined that the fault detection result of the oil pumping unit (2) is that the sucker rod (202) is stuck with wax; When the sucker rod (202) is in the process of descending, the current values ​​corresponding to the multiple current signals are lower than the first preset current value, the first sampling time length of the multiple current signals exceeds the fourth preset time length, and when the sucker rod (202) is in the process of ascending, the current values ​​corresponding to the multiple current signals are higher than the second preset current value, the second sampling time length of the multiple current signals exceeds the fifth preset time length, and when the sucker rod (202) is continuously ascending or descending, the total sampling time length composed of the first sampling time length and the second sampling time length exceeds the sixth preset time length, it is determined that the fault detection result of the pumping unit (2) is that the sucker rod (202) is broken; The industrial computer (6) is used to receive the detection results of the single well oil collection pipe and the detection results of the oil pumping unit (2), and output the detection results of the single well oil collection pipe (1) and the detection results of the oil pumping unit (2).

2. The oil well detection device according to claim 1, characterized in that: The device further comprises: a temperature transmitter (7); The temperature transmitter (7) is connected to the temperature sensor (3) and the controller (5) respectively; The temperature transmitter (7) is used to receive a plurality of temperature signals sent by the temperature sensor (3), convert the plurality of temperature signals into current signals in a first preset format, and send the current signals in the first preset format to the controller (5).

3. The oil well detection device according to claim 2, characterized in that: The device further comprises a safety barrier (8), wherein the safety barrier (8) is connected to the temperature transmitter (7) and the controller (5) respectively; The safety gate (8) is used to perform proportional scaling processing on the current signal in a first preset format sent by the temperature sensor (3), and send the scaled current signal to the controller (5); The current value corresponding to the scaled current signal is within the current value range acceptable to the controller (5).

4. The oil well detection device according to claim 1, characterized in that: The device further comprises: a current transmitter (9); The current transmitter (9) is connected to the current transformer (4) and the controller (5) respectively; The current transmitter (9) is used to receive a plurality of current signals transmitted by the current transformer (4), convert the plurality of current signals into current signals in a second preset format, and send the current signals in the second preset format to the controller (5).

5. The oil well detection device according to claim 4, characterized in that: The current transmitter (9) and the controller (5) are connected in a wireless bridge manner, so that the current signal in the second preset format is sent to the controller (5) through the wireless bridge.

6. The oil well detection device according to claim 1, characterized in that: The end of the single-well oil collection pipeline (1) is provided with a temperature jack, and the temperature sensor (3) is installed in the temperature jack to collect the temperature signal of the end of the single-well oil collection pipeline (1).

7. The oil well detection device according to claim 1, characterized in that: Configuration software is installed on the industrial computer (6), and the industrial computer (6) is provided with a display (601); The configuration software is used to monitor the working condition of the oil well and send the working condition of the oil well to the display (601); The display (601) is used to display the working status of the oil well, as well as the detection results of the single well oil collecting pipe and the detection results of the pumping unit (2).

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