A device and system for measuring intermittent drilling fluid properties

Abstract

The utility model relates to the technical field of viscosity testing, and specifically to an intermittent drilling fluid performance measuring device and system, wherein the measuring device includes a measuring cup, a detection component and a cleaning component, the measuring cup is vertically arranged to accommodate a measured medium, and an inlet and outlet are arranged at the bottom of the measuring cup; the detection component is arranged on the measuring cup to detect the performance of the measured medium; the cleaning component is arranged on the measuring cup to clean the inside of the measuring cup. The cleaning component is directly arranged on the measuring cup, and the measuring cup can be directly and automatically cleaned after the measurement is completed, without the need to disassemble the measuring cup for separate cleaning, thereby improving the convenience of cleaning.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling fluid performance testing, in particular to an intermittent drilling fluid performance measuring device and system. Background Art

[0002] In the technical field of underground construction, it is necessary to test and analyze the parameters of drilling fluid. In the existing testing equipment, the density of drilling fluid is often tested manually by a drilling fluid liquid density meter, which not only requires manual sampling, testing, and cleaning of instruments and containers, but also has large measurement errors. The measurement of pH value and chloride ion, calcium ion, and potassium ion content first requires obtaining the filtrate of the drilling fluid through a medium-pressure water loss meter, and then using the titration method to test the chloride ion value, and using pH test paper to compare the pH value of the filtrate. There are also disadvantages such as large errors, the measurement results are greatly affected by subjective factors, and manual sampling, testing, and cleaning are required. Utility Model Content

[0003] The utility model provides a device and system for measuring intermittent drilling fluid performance to solve the above technical problems. After the measurement is completed, the equipment is directly and automatically cleaned.

[0004] The utility model solves the above technical problems with the following technical solutions: a device for measuring intermittent drilling fluid properties,

[0005] Including measuring cup, detection components and cleaning components,

[0006] The measuring cup body is vertically arranged to contain the measured medium, and an inlet and outlet are arranged at the bottom of the measuring cup body;

[0007] The detection component is arranged on the measuring cup body and is used to detect the performance of the measured medium;

[0008] The cleaning component is arranged on the measuring cup body and is used for cleaning the interior of the measuring cup body.

[0009] The working principle and beneficial effects of the utility model are as follows: the cleaning component is directly arranged on the measuring cup body, and the measuring cup body can be directly and automatically cleaned after the measurement is completed, and the measuring cup body does not need to be disassembled for separate cleaning, thereby improving the convenience of cleaning.

[0010] On the basis of the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, the cleaning assembly includes a cleaning brush and a motor.

[0012] The motor is mounted on the top of the measuring cup body;

[0013] The cleaning brush comprises a brush rod and a brush head, the brush rod is drivingly connected to the motor, the brush head is arranged on the brush rod, and the end of the brush head contacts the inner wall of the measuring cup body;

[0014] The detection component is located on the side of the measuring cup body.

[0015] The beneficial effect of adopting the above further scheme is: by locating the detection component on the side of the measuring cup body, installing the cleaning brush on the top of the measuring cup body, and the end of the brush head contacts the inner wall of the measuring cup body; after the measurement is completed, the measuring cup body can be cleaned in time, and the detection component on the side can also be cleaned at the same time.

[0016] On the basis of the above technical solution, the present invention can also be improved as follows.

[0017] Further, the detection component includes one or more of the following: a density detection device, a pH value detection device, a calcium ion detection device and a potassium ion detection device; the detection component is arranged at the lower part of the measuring cup body, and the density detection device, the pH value detection device, the calcium ion detection device and the potassium ion detection device all have a detection end; a first liquid level detection device is provided at the lower part of the measuring cup body, and the first liquid level detection device is located above the detection end.

[0018] The beneficial effect of adopting the above further solution is that the density detection device, the pH value detection device, the calcium ion detection device and the potassium ion detection device are arranged at the lower part of the measuring cup body, so that one or more parameters of the measured medium can be measured.

[0019] On the basis of the above technical solution, the present invention can also be improved as follows.

[0020] Furthermore, the detection component also includes a chloride ion measuring device, which is arranged on the upper part of the measuring cup body; a second liquid level detection device is provided on the upper part of the measuring cup body, and the second liquid level detection device is located above the chloride ion measuring device; a pure water inlet is also provided above the second liquid level detection device.

[0021] The beneficial effect of adopting the above further scheme is: the chloride ion measuring device is arranged on the upper part of the measuring cup body, and the density, pH value, calcium ion and potassium ion of the measured medium are detected at the lower part; then a certain amount of pure water is injected, and the diluted measured medium is stirred evenly with a cleaning brush, so that the chloride ion content in the diluted liquid of the measured medium is lower than the maximum range of the chloride ion measuring device, which can be directly read by the chloride ion measuring device, and then the accurate chloride ion content value of the measured medium is obtained by converting the dilution multiple.

[0022] On the basis of the above technical solution, the present invention can also be improved as follows.

[0023] Furthermore, the connecting section between the brush head and the brush rod is a hard structure, and the end of the brush head is a soft structure.

[0024] The beneficial effect of adopting the above further solution is that the end of the brush head is a soft structure that can make good contact with the measuring cup body and will not scratch the cup body and the detection end of the measuring device, thereby achieving effective cleaning of the inner wall of the cup body and the detection end.

[0025] On the basis of the above technical solution, the present invention can also be improved as follows.

[0026] Furthermore, a cleaning nozzle is provided on the top of the measuring cup body.

[0027] The beneficial effect of adopting the above further solution is: by setting a cleaning nozzle, cleaning agent and purge gas can be sprayed through the cleaning nozzle to further clean the measuring cup body and the internal detection end, and the residual cleaning liquid can be blown away.

[0028] On the basis of the above technical solution, the present invention can also be improved as follows.

[0029] Furthermore, the inlet and outlet are the same interface, and a three-way valve is provided on the interface.

[0030] The beneficial effect of adopting the above further solution is that by providing a three-way valve, only one interface is needed to realize the functions of liquid inlet and liquid discharge.

[0031] On the basis of the above technical solution, the present invention can also be improved as follows.

[0032] Furthermore, the lower portion of the measuring cup body is in an inverted cone shape, and the inlet and outlet are arranged on the small end of the inverted cone.

[0033] The beneficial effect of adopting the above further solution is that the inlet and outlet are arranged on the small end of the inverted cone to ensure complete drainage.

[0034] The utility model also provides an intermittent drilling fluid performance measurement system, including a control module, a pumping module and a measuring module.

[0035] The measuring module is the above-mentioned measuring device, and the control module is electrically connected to the pumping module and the measuring module;

[0036] The pumping module is used to pump the measured medium to the measuring device through the inlet and outlet.

[0037] The beneficial effects of the measuring system are: a control module and a pumping module are provided, and the measuring and cleaning are controlled by the control module.

[0038] On the basis of the above technical solution, the present invention can also be improved as follows.

[0039] Furthermore, it also includes a cleaning liquid, which is pumped to the cleaning component through the pumping module.

[0040] The beneficial effect of adopting the above further solution is that the measuring cup body is completely cleaned by controlling the cleaning liquid.

[0041] On the basis of the above technical solution, the present invention can also be improved as follows.

[0042] Furthermore, it also includes a cleaning gas, which is compressed air and is transported to the cleaning component through the cleaning liquid pipeline of the pumping module.

[0043] The beneficial effect of adopting the above further scheme is: by controlling the cleaning gas to purge the cleaned measuring device, the residual cleaning liquid attached to the inner wall of the measuring cup, the cleaning brush, the cleaning component, and the detection end of each detection device is cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a cross-sectional structural schematic diagram of the first embodiment of the intermittent drilling fluid performance measuring device of the utility model;

[0045] Figure 2 This is a schematic diagram of the first working state of the first embodiment;

[0046] Figure 3 This is a schematic diagram of the second working state of the first embodiment;

[0047] Figure 4 This is a schematic diagram of the third working state of the first embodiment;

[0048] Figure 5 is a top plan view of a first embodiment of a measuring device;

[0049] Figure 6 is a schematic cross-sectional structure diagram of a second embodiment of a measuring device;

[0050] Figure 7 It is a schematic diagram of the distribution structure of three detection components in the second embodiment of the measuring device;

[0051] Figure 8 is a schematic structural diagram of a first embodiment of a measurement system;

[0052] Fig. 9 It is a schematic diagram of the structure of the second embodiment of the measurement system.

[0053] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0054] 1. Measuring cup body, 11. Inlet and outlet, 12. First liquid level detection device, 13. Second liquid level detection device, 14. Pure water inlet, 15. Three-way valve, 21. Density detection device, 22. PH value detection device, 23. Chloride ion measuring device, 24. Calcium ion detection device, 25. Potassium ion detection device, 31. Motor, 32. Brush rod, 33. Brush head, 34. Cleaning nozzle, 35. Exhaust hole, 41. First pumping module, 42. Second pumping module, 51. Clean gas source, 52. Cleaning liquid pool, 53. Drilling fluid pool, 54. Cleaning liquid recovery pool, 6. Measuring module, 71. Clean gas pipeline, 72. Cleaning liquid gas pipeline, 73. Drilling fluid pipeline, 74. Cleaning liquid pipeline, 75. Waste liquid pipeline, 76. Three-in-one pipeline, 8. Water purifier, 9. Metering pump. DETAILED DESCRIPTION

[0055] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0056] The structural diagram of the first embodiment of the intermittent drilling fluid performance measuring device of the utility model is shown in FIG. Figures 1 to 5 .

[0057] like Figures 1 to 5 As shown, an intermittent drilling fluid performance measuring device includes a measuring cup body 1, a detection component and a cleaning component. The measuring cup body 1 is vertically arranged to accommodate the measured medium, and an inlet and outlet 11 is arranged at the bottom of the measuring cup body 1; the detection component is arranged on the measuring cup body 1 to detect the performance of the measured medium; the cleaning component is arranged on the measuring cup body 1 to clean the inside of the measuring cup body 1.

[0058] In this embodiment, the lower part of the measuring cup body 1 is in the shape of an inverted cone, and the inlet and outlet 11 are arranged at the small end of the inverted cone. The inlet and outlet 11 are the same interface, and a three-way valve 15 is arranged on the interface. The three-way valve 15 has three ports, including a main port connected to the measuring cup body 1, an inlet for inputting the measured medium, and an outlet for draining liquid.

[0059] In this embodiment, the detection assembly includes a density detection device 21 and a pH value detection device 22. The density detection device 21 and the pH value detection device 22 are arranged at the lower part of the measuring cup body 1. Both the density detection device 21 and the pH value detection device 22 have a detection end. The lower part of the measuring cup body 1 is provided with a first liquid level detection device 12, and the first liquid level detection device 12 is located above the detection end. Specifically, the lower part of the measuring cup body 1 is in an inverted cone shape. As shown in the figure, the density detection device 21 is arranged on one side of the cone section and is located at an upper position; the pH value detection device 22 is arranged on the other side of the cone section, in an opposing relationship with the density detection device 21, and is located closer to the lower end. The first liquid level detection device 12 is a photoelectric detection device, which includes two components, one of which is a transmitting device and the other is a receiving device.

[0060] Among them, the cleaning component includes a cleaning brush and a motor 31, the motor 31 is installed on the top of the measuring cup body 1; the cleaning brush has a brush rod 32 and a brush head 33, the brush rod 32 is transmission connected to the motor 31, the brush head 33 is arranged on the brush rod 32, and the end of the brush head 33 contacts the inner wall of the measuring cup body 1; the detection component is located on the side of the measuring cup body 1.

[0061] The connecting section between the brush head 33 and the brush rod 32 is a hard structure, and the end of the brush head 33 is a soft structure.

[0062] In this embodiment, a cleaning nozzle 34 is provided on the top of the measuring cup body 1. Figure 5 As shown, two cleaning nozzles 34 and an exhaust hole 35 are arranged on the top. The exhaust hole 35 is used to ensure smooth flow of gas in the cup body when measuring the liquid inlet and outlet in the cup body 1.

[0063] In this embodiment, the detection assembly further includes a chloride ion measuring device 23, which is disposed on the upper portion of the measuring cup body 1; a second liquid level detection device 13 is disposed on the upper portion of the measuring cup body 1, and the second liquid level detection device 13 is located above the chloride ion measuring device 23; a pure water inlet 14 is also disposed above the second liquid level detection device 13. Similarly, the second liquid level detection device 13 is also a photoelectric detection device, which includes two components, one of which is a transmitting device and the other is a receiving device.

[0064] The test process of this embodiment is as follows: open the three-way valve 15 at the interface to connect the inlet and the main port, that is, the measured medium can be injected into the measuring cup body 1 from the outside; when the measured medium is injected into the measuring cavity, when the first liquid level detection device 12 detects that the liquid level reaches the set height, the inlet of the three-way valve 15 is closed to stop the injection of the measured medium, thereby achieving quantitative acquisition of the measured medium.

[0065] Measuring pH and density: After a certain amount of drilling fluid enters the cavity, the pH value and density value of the drilling fluid are directly obtained through the pH value detection device 22 and the density detection device 21. In this embodiment, the density detection device 21 is a tuning fork density meter.

[0066] Measuring chloride ion value: After the pH and density measurements are completed, purified pure water is injected into the measuring chamber through the pure water inlet 14. When the second liquid level detection device 13 detects that the liquid level reaches the set height, the injection of pure water is stopped. The motor 31 is turned on to drive the brush rod 32 and the brush head 33 to rotate, and the pure water and drilling fluid are mixed evenly. After that, the chloride ion content of the mixed liquid is read through the chloride ion measurement device 23, and the actual chloride ion content of the drilling fluid is restored after the background calculation of the dilution multiple.

[0067] After the above measurements are completed, the measured medium in the measuring device is discharged and the device is cleaned. The specific process is as follows.

[0068] Draining: After the chloride ion measurement is completed, the three-way valve 15 at the interface is opened, the main port and the outlet are connected, and the measured medium in the measuring cup body 1 is discharged.

[0069] Cleaning: Use a power pump to pump the cleaning liquid to the cleaning nozzle 34 on the top of the measuring cup body 1 to rinse the inside of the measuring cup body 1, and turn on the motor 31 to clean the cup body and the probe with the end of the soft brush head 33. The cleaning liquid after cleaning is discharged outward through the outlet of the bottom three-way valve 15. After cleaning, turn off the cleaning power pump, introduce an external air source, and purge the measuring cup body 1 to blow away the residual cleaning liquid on the cavity wall, the brush rod and brush head, and the detection end of various detection devices; the purged cleaning liquid is also discharged through the outlet of the bottom three-way valve 15.

[0070] It should be noted that the chloride ion value is not obtained directly by measuring the drilling fluid because the maximum range of the current chloride ion meter is about 30,000 ppm, while the chloride ion content of the drilling fluid is usually more than 50,000 ppm, or even 100,000 ppm, which is far beyond the maximum range of the chloride ion meter. Therefore, the chloride ion concentration must be made within the maximum range by dilution. In this embodiment, the volume of the injected pure water is about 3 times that of the medium being measured.

[0071] The pH value detection device 22 used in this embodiment characterizes the pH value by measuring the electrode potential, which is more accurate and has an error within 0.1.

[0072] The structural diagram of the second embodiment of the intermittent drilling fluid performance measuring device of the utility model is shown in Figure 6 to Figure 7Compared with the first embodiment, the difference is that in this embodiment, the detection assembly further includes a calcium ion detection device 24 and a potassium ion detection device 25; the pH value detection device 22, the calcium ion detection device 24 and the potassium ion detection device 25 are arranged at the same height in the vertical direction of the measuring cup body 1, and are evenly distributed in the circumferential direction thereof, that is, the angle between the three detection devices is 120°.

[0073] During measurement, the calcium ion detection device 24 measures the calcium ion content, and the potassium ion detection device 25 measures the potassium ion content and measures the pH and density simultaneously.

[0074] This embodiment also provides an intermittent drilling fluid measurement system. The measurement system embodiment is as follows Figure 8 As shown, it includes a control module, a pumping module and a measuring module.

[0075] The measuring module is the above-mentioned measuring device, and the control module (not shown in the figure) is electrically connected to the pumping module and the measuring module.

[0076] The pumping module is used to pump the measured medium to the measuring device through the inlet and outlet 11.

[0077] It also includes cleaning liquid and cleaning gas. The cleaning liquid is pumped to the cleaning component through a pumping module, and the cleaning gas is transported to the cleaning component through a cleaning liquid pipeline of the pumping module.

[0078] Among them, the cleaning liquid is arranged in the cleaning liquid pool 52, the cleaning gas is arranged in the cleaning gas source 51, the measured medium is arranged in the drilling fluid pool 53, and also includes a cleaning liquid recovery pool 54. The pumping module includes a first pumping module 41 and a second pumping module 42; the first pumping module 41 is connected to the drilling fluid pool 53 through a drilling fluid pipeline 73, the cleaning liquid pool 52 is connected to the first pumping module 41 through a cleaning liquid pipeline 74, and the clean gas source 51 is connected to the first pumping module 41 through a clean gas pipeline 71. An inlet three-way valve is provided at the inlet of the measuring device 6, the first pumping module 41 is connected to the measuring device 6 through a three-in-one pipeline 76 and an inlet three-way valve, and the third port of the inlet three-way valve is connected to the drilling fluid pool 53 through a drilling fluid pipeline 73, that is, when a test is required, the inlet three-way valve allows the measured medium to enter the cup body of the measuring device, and when a test is not required, the inlet three-way valve controls the measured medium to enter the drilling fluid pool 53. During cleaning, the output end of the measuring device 6 discharges the cleaning liquid into the cleaning liquid recovery tank 54 through the waste liquid pipeline 75 .

[0079] The cleaning liquid pool 52 is connected to the second pumping module 42 through the cleaning liquid pipeline 74, the cleaning gas source 51 is connected to the second pumping outlet of the second pumping module 42 through the cleaning gas pipeline 71, and then the second pumping outlet of the second pumping module 42 is connected to the cleaning nozzle 34 arranged at the top of the measuring device 6 through the cleaning liquid gas pipeline 72.

[0080] One end of the water purifier 8 is connected to the cleaning liquid pool 52 through the cleaning liquid pipeline 74, and the other end of the water purifier 8 is connected to the pure water inlet 14 of the measuring device 6. The measurement working process of this embodiment is: the control module controls the first pumping module 41 to pump the drilling fluid to be measured in the drilling fluid pool 53 to the measuring device 6, wherein the control device controls the three-way valve 15 of the inlet and outlet 11 to connect the inlet and the main port, that is, the measured medium can be injected into the measuring cup body 1 from the outside, and then the pH value and density test are performed in accordance with the aforementioned measuring device embodiment. Then the chloride ion test is performed, that is, the liquid in the cleaning liquid pool 52 is purified by the water purifier 8 and then input into the measuring cup body 1 to dilute the measured medium, and then the chloride ion content of the measured medium is measured by the chloride ion measuring device 23. During the test, the valve is closed and opened by the control module, the data reading of the detection device is controlled, and the height of the liquid level is controlled by the liquid level detection device.

[0081] After the test is completed, the measured drilling fluid is finally output to the drilling fluid pool 53 through the measuring device 6. Specifically, the three-way valve 15 at the interface is opened, the main port and the outlet are connected, and the measured medium in the measuring cup 1 is discharged into the drilling fluid pool 53.

[0082] The pipeline of the measurement system is cleaned by liquid and gas, wherein the working process of liquid cleaning is as follows: the cleaning liquid in the cleaning liquid pool 52 is pumped into the measurement pipeline by the first pumping module 41 to clean the pipeline, and the cleaning liquid is finally output to the cleaning liquid recovery pool 54 through the outlet of the three-way valve 15 in the measurement device 6. The pipeline gas cleaning process is the same as the above method: the clean gas in the clean gas source 51 is allowed to enter the measurement pipeline by controlling the valve, and the pipeline is purged with gas, and the cleaning liquid remaining in the measurement module and the pipeline is finally output to the cleaning liquid recovery pool 54 through the outlet of the three-way valve 15 in the measurement device 6.

[0083] The measuring device of the measuring system is cleaned by liquid and gas, wherein the working process of liquid cleaning is as follows: the cleaning liquid in the cleaning liquid pool 52 is pumped to the cleaning nozzle 34 set at the top of the measuring device 6 through the second pumping module 42, the inside of the measuring cup body 1 is rinsed, and the motor 31 is turned on, and the cup body and the probe are cleaned by using the end of the soft structure brush head 33; the cleaning liquid after cleaning is discharged to the cleaning liquid recovery pool 54 through the outlet of the bottom three-way valve 15. The gas cleaning process is the same as the above method: the cleaning gas in the cleaning gas source 51 is allowed to enter the cleaning nozzle 34 set at the top of the measuring device 6 by controlling the valve, and the measuring cup body 1 is purged to blow away the residual cleaning liquid remaining on the cavity wall, the brush rod and the brush head, and the detection end of various detection devices; the purged cleaning liquid is also discharged to the cleaning liquid recovery pool 54 through the outlet of the bottom three-way valve 15.

[0084] Measurement system embodiment 2 Fig. 9 As shown, Figure 8 Compared with the first embodiment, the difference is that the metering method of pure water in the measuring device 6 used is achieved by using a metering pump 9.

[0085] In the embodiment of the above system, the first pumping module 41 can use other types of electric pumps. At the same time, the second pumping module 42 can also use an electric pump. The clean gas source 51 in the embodiment is a pressurized gas, which does not need to be pressurized, and the gas is directly purged to the measurement module through valve control. The clean gas source 51 is connected to the pumping outlet through an air pipe, which is convenient for purging the residual drilling fluid or cleaning fluid in the pipeline of the entire measurement system.

[0086] This embodiment also provides a method for measuring intermittent drilling fluid properties, comprising the following measuring steps:

[0087] S1, the measured medium is pumped from the inlet and outlet into the measuring cup body through the pumping module, and when the liquid level in the measuring cup body reaches the first liquid level, the pumping is stopped.

[0088] S2, start the detection component to perform one or more of the following tests on the medium being tested: density detection, pH value detection, calcium ion detection and potassium ion detection.

[0089] S3, adding a set amount of pure water into the measuring cup body, starting the chloride ion measuring device to perform chloride ion detection on the measured medium.

[0090] S4: After the measurement is completed, the measured medium is discharged from the inlet and outlet.

[0091] S5, start the cleaning component to clean the measuring cup body.

[0092] Wherein, step S3 also includes a result confirmation step,

[0093] When the chloride ion detection result is greater than the upper limit of the optimal range of the chloride ion measuring device, a set amount of pure water is re-injected into the measuring cup body and the measured medium is continued to be tested for chloride ions; when the chloride ion detection result is less than the lower limit of the optimal range of the chloride ion measuring device, the next test is performed after immediate cleaning and the injection amount of pure water is automatically reduced, that is, the dilution multiple is reduced. The above method is used to ensure that the chloride ion detection value is within the optimal range, and the actual content of chloride ions in the original drilling fluid is obtained by converting the dilution multiple. At the same time, whether the chloride ion detection result is greater than the upper limit of the optimal range of the chloride ion measuring device or less than the lower limit of the optimal range of the chloride ion measuring device, the system will issue an alarm at the first time, clean the equipment immediately, and conduct the next test to confirm again.

[0094] Through the above result confirmation steps, the chloride ion test value is within the optimal range, ensuring the accuracy of the test. When the chloride ion test value is abnormal, it is tested again to prevent misjudgment, and the alarm is issued to facilitate on-site staff to deal with it in time.

[0095] After completing the detection and measurement of various substances in the measured medium, the measuring cup body is directly and automatically cleaned, and there is no need to disassemble the measuring cup body for separate cleaning, which improves the convenience of cleaning.

[0096] Step S5 includes liquid cleaning and gas cleaning.

[0097] The implementation process of the measurement and cleaning method of the specific embodiment has been described in detail in the aforementioned device and system, and will not be repeated here. Here, the confirmation steps in the chloride ion test process are described in detail.

[0098] The optimal detection accuracy range of the electrode for chloride ion detection is generally calibrated in sections, such as 0-10000, 10000-20000, 20000-30000. In this embodiment, the optimal detection range of the chloride ion measuring device 23 is 0-10000. During the test process in step S3, the measured medium in the measuring cup body 1 is 1L, and 5L of pure water is injected into the measuring cup body 1 through the pure water inlet 14, and then the chloride ion measuring device 23 is started to detect chloride ions on the measured medium.

[0099] When leakage or other emergencies occur during the drilling process, the chloride ion content in the drilling fluid returned from the well will suddenly change. When the test result is 13000, 13000 is greater than the optimal accuracy range of the chloride ion measuring device 23 in this design example, and the test result is not the most accurate; therefore, the control system issues an instruction to continue to inject 1L of pure water into the measuring cup body 1 through the pure water inlet 14, then stir it evenly and start the chloride ion measuring device 23 to detect chloride ions on the measured medium. The result of the re-test is 10500. At this time, 10500 is still greater than the optimal range of the chloride ion measuring device 23 in this design example, and it is not within the optimal detection range of the chloride ion measuring device 23, so the test result is inaccurate. Then, 1L of pure water is injected into the measuring cup body 1 through the pure water inlet 14 again, and then stir it evenly and start the chloride ion measuring device 23 to detect chloride ions on the measured medium. The result of the re-test is 9500, which is less than the upper limit of the optimal range of the chloride ion measuring device 23 in this design example. At this time, the chloride ion detection test result is used as the final test result.

[0100] In a specific embodiment, multiple tests may be performed before the first chloride ion test. If the results of multiple tests all exceed the upper limit of the optimal range of the chloride ion measuring device 23, a result confirmation step of refilling pure water is then performed.

[0101] Similarly, when it is found that the chloride ion detection test result is lower than the calibrated optimal range lower limit during a certain test, since it is too late to reduce the amount of pure water, that is, to lower the dilution factor during the test, the amount of pure water injected will be reduced during the next test to lower the dilution factor so that the chloride ion test value is above the optimal range lower limit of the chloride ion measuring device 23.

[0102] In a specific embodiment, the optimal range of the chloride ion measuring device 23 is determined according to the specific detection meter. For example, if a meter has a larger range of 0-30000 ppm, its optimal range is generally 10000-15000 ppm.

[0103] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An intermittent drilling fluid performance measuring device, comprising a measuring cup, a detection component and a cleaning component, characterized in that: The measuring cup body is vertically arranged to contain the measured medium, and an inlet and outlet are arranged at the bottom of the measuring cup body; The detection component is arranged on the measuring cup body and is used to detect the performance of the measured medium; The cleaning component is arranged on the measuring cup body and is used for cleaning the interior of the measuring cup body.

2. The intermittent drilling fluid performance measuring device according to claim 1, characterized in that: The cleaning assembly includes a cleaning brush and a motor. The motor is mounted on the top of the measuring cup The cleaning brush comprises a brush rod and a brush head, the brush rod is drivingly connected to the motor, the brush head is arranged on the brush rod, and the end of the brush head contacts the inner wall of the measuring cup body; The detection component is located on the side of the measuring cup body.

3. The intermittent drilling fluid performance measuring device according to claim 2, characterized in that: The detection component includes one or more of the following: a density detection device, a pH value detection device, a calcium ion detection device and a potassium ion detection device; the detection component is arranged at the lower part of the measuring cup body, and the density detection device, the pH value detection device, the calcium ion detection device and the potassium ion detection device all have a detection end; a first liquid level detection device is provided at the lower part of the measuring cup body, and the first liquid level detection device is located above the detection end.

4. The intermittent drilling fluid performance measuring device according to claim 2, characterized in that: The detection assembly also includes a chloride ion measuring device, which is arranged on the upper part of the measuring cup body; a second liquid level detection device is provided on the upper part of the measuring cup body, and the second liquid level detection device is located above the chloride ion measuring device; a pure water inlet is also provided above the second liquid level detection device.

5. The intermittent drilling fluid performance measuring device according to any one of claims 2 to 4, characterized in that: The connecting section between the brush head and the brush rod is a hard structure, and the end of the brush head is a soft structure.

6. The intermittent drilling fluid performance measuring device according to any one of claims 1 to 4, characterized in that: A cleaning nozzle is arranged on the top of the measuring cup body.

7. The intermittent drilling fluid performance measuring device according to any one of claims 1 to 4, characterized in that: The inlet and outlet are the same interface, and a three-way valve is arranged on the interface.

8. The intermittent drilling fluid performance measuring device according to any one of claims 1 to 4, characterized in that: The lower part of the measuring cup body is in an inverted cone shape, and the inlet and outlet are arranged on the small end of the inverted cone.

9. An intermittent drilling fluid performance measurement system, comprising a control module, a pumping module and a measurement module, characterized in that: The measuring module is the measuring device according to any one of claims 1 to 8, and the control module is electrically connected to the pumping module and the measuring module; The pumping module is used to pump the measured medium to the measuring device through the inlet and outlet.

10. The intermittent drilling fluid performance measurement system according to claim 9, characterized in that: Also included is a cleaning liquid, which is pumped to the cleaning component through the pumping module.

11. The intermittent drilling fluid performance measurement system according to claim 9, characterized in that: It also includes a cleaning gas, which is compressed air and is delivered to the cleaning component through a cleaning liquid pipeline of the pumping module.

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