Automatic grouting system

Abstract

The utility model discloses an automatic grouting system which comprises a metering container, a measurement and control device and a liquid level detection assembly used for detecting liquid level information in the metering container, a grouting pipeline and a grout return pipeline are arranged between the metering container and a shaft, a grouting pump is arranged in the grouting pipeline, a first electric valve is arranged in the grout return pipeline, and a second electric valve is arranged in the metering container. The measurement and control device is electrically connected with the liquid level detection assembly and electrically connected with the first electric valve so as to automatically open or close the first electric valve to control the slurry returning process and obtain the slurry returning amount according to the liquid level information. The measurement and control device is electrically connected with the grouting pump so as to automatically open or close the grouting pump according to the target grouting amount and the liquid level information to control the grouting process. According to the automatic grouting system, automatic grouting of the drilling fluid in a petroleum operation site can be achieved, efficiency is improved, the volume of the injected drilling fluid and the volume of the flowing-out drilling fluid can be accurately measured, and guarantee is provided for safety diagnosis.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling safety, and more specifically, to an automatic grouting system. Background Art

[0002] During the process of oil drilling operations, drilling fluid is required. The functions of this drilling fluid include cooling the drill bit, carrying drill cuttings back to the surface, and balancing formation pressure, etc. In the event of encountering high-pressure formations or sudden situations such as well leakage and well kick, a large amount of drilling fluid is required for corresponding treatment. In addition, the well control personnel on duty need to observe the flow rate, bubbles, odor, and oil flowers at the outlet of the drilling fluid during drilling, and observe, record, and check the volume of the drill string or casing taken out (or lowered) and the volume of the drilling fluid poured in (or flowed out) during tripping and casing running; during the pulling out of the drill string, the drilling fluid needs to be filled once every 3 to 5 drill pipe strings or every 1 drill collar string pulled out, and based on the grouting volume and the corresponding displacement volume of the drill string, it is judged whether there is overflow or loss in the wellbore; during the running of the drill string, every 3 to 5 drill pipe strings or every 1 drill collar string lowered, it is necessary to judge whether there is overflow or loss in the wellbore based on the volume of the drilling fluid returning to the wellhead and the corresponding displacement volume of the drill string.

[0003] At present, the measurement of the injection volume and return volume of the drilling fluid has to be completed by manual calculation, and the displacement volume of the drill string is obtained by looking up tables or manual calculation, resulting in a large workload and low efficiency for the well control personnel on duty, and large measurement errors. If the judgment of well leakage and overflow is inaccurate, there are also certain potential safety hazards.

[0004] Therefore, on the site of oil drilling operations, how to improve the efficiency and accuracy of measuring the volume of the injected and outflowing drilling fluid is an urgent problem to be solved by those skilled in the art. Content of the Utility Model

[0005] To solve the above technical problems, the utility model provides an automatic grouting system, which can not only realize the automatic grouting of the drilling fluid in the oil operation site, improve the efficiency, but also accurately measure the volume of the injected and outflowing drilling fluid, providing a guarantee for safety diagnosis.

[0006] An automatic grouting system provided by the utility model comprises a metering container, a measurement and control device, and a liquid level detection component for detecting the liquid level information in the metering container. There are a grouting pipeline and a return slurry pipeline between the metering container and the wellbore. A grouting pump is arranged in the grouting pipeline, and a first electric valve is arranged in the return slurry pipeline. The measurement and control device is electrically connected to the liquid level detection component, and the measurement and control device is electrically connected to the first electric valve to automatically open or close the first electric valve to control the return slurry process and obtain the return slurry volume according to the liquid level information. The measurement and control device is electrically connected to the grouting pump to automatically open or close the grouting pump according to the target grouting volume and the liquid level information to control the grouting process.

[0007] Preferably, in the above automatic grouting system, there is a slurry discharge pipeline between the metering container and the slurry tank. A slurry discharge pump and a second electric valve group are arranged in the slurry discharge pipeline. The measurement and control device is electrically connected to both the slurry discharge pump and the second electric valve group to automatically open or close the slurry discharge pump and the second electric valve group according to the liquid level information to control the slurry discharge process.

[0008] Preferably, in the above automatic grouting system, there is also a slurry replenishment pipeline between the metering container and the slurry tank. A slurry replenishment pump and a third electric valve group are arranged in the slurry replenishment pipeline. The measurement and control device is electrically connected to both the slurry replenishment pump and the third electric valve group to automatically open or close the slurry replenishment pump and the third electric valve group according to the liquid level information to control the slurry replenishment process.

[0009] Preferably, in the above automatic grouting system, the slurry discharge pump and the slurry replenishment pump are the same reverse slurry pump. The second electric valve group includes a second electric valve and a third electric valve. The second electric valve is located between the slurry discharge port of the metering container and the reverse slurry pump, and the third electric valve is located between the reverse slurry pump and the slurry tank. The third electric valve group includes a fourth electric valve and a fifth electric valve. The fourth electric valve is located between the slurry tank and the reverse slurry pump, and the fifth electric valve is located between the reverse slurry pump and the slurry inlet of the metering container. The measurement and control device is electrically connected to the second electric valve, the third electric valve, and the reverse slurry pump to automatically open the second electric valve, the third electric valve, and the reverse slurry pump to control the slurry discharge process when the liquid level is too high. The measurement and control device is electrically connected to the fourth electric valve and the fifth electric valve to automatically open the fourth electric valve, the fifth electric valve, and the reverse slurry pump to control the slurry filling process when the liquid level is too low.

[0010] Preferably, in the above automatic grouting system, the liquid level detection component includes an ultrasonic liquid level sensor arranged in the metering container.

[0011] Preferably, in the above automatic grouting system, the liquid level detection assembly further includes a float limiter disposed in the metering container, and the measurement and control device is configured to automatically close the first electric valve and the reverse grouting pump to stop reverse grouting and supplementary grouting when receiving a limit signal transmitted from the float limiter.

[0012] Preferably, in the above automatic grouting system, it further includes an alarm indication component electrically connected to the measurement and control device, which is configured to give an alarm indication when receiving the limit signal.

[0013] Preferably, in the above automatic grouting system, the measurement and control device is also electrically connected to a hook load sensor and a winch encoder. The measurement and control device is further configured to judge the drilling operation conditions according to the hook load information and the winch encoding information, obtain the number of drill strings, and analyze the overflow or loss situation in the wellbore in combination with the liquid level information.

[0014] Preferably, in the above automatic grouting system, it further includes a touch display device electrically connected to the measurement and control device.

[0015] Preferably, in the above automatic grouting system, it further includes a power distribution cabinet for power supply disposed on the outer side surface of the metering container.

[0016] As can be seen from the above technical solutions, for the automatic grouting system provided by the present invention, since it includes a metering container, a measurement and control device, and a liquid level detection assembly, there are a grouting pipeline and a reverse grouting pipeline between the metering container and the wellbore. There is a grouting pump in the grouting pipeline, and a first electric valve is provided in the reverse grouting pipeline. The measurement and control device is electrically connected to the liquid level detection assembly, and the measurement and control device is electrically connected to the first electric valve to automatically open or close the first electric valve to control the reverse grouting process and obtain the reverse grouting volume according to the liquid level information. The measurement and control device is electrically connected to the grouting pump to automatically open or close the grouting pump according to the target grouting volume and the liquid level information to control the grouting process. It can be seen that through the combination of the metering container, the measurement and control device, and the liquid level detection component with the grouting pipeline and the reverse grouting pipeline, the grouting process and the reverse grouting process can be automatically controlled, and the grouting volume and the reverse grouting volume can be obtained accurately and efficiently, thereby providing a basis for the safety detection of the current pipeline operation. Therefore, it can be seen that this system can not only realize the automatic grouting of drilling fluid at the oil operation site, improve efficiency, but also accurately measure the volume of the drilling fluid poured in and out, providing guarantee for safety diagnosis. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0018] Figure 1 This is an overall schematic diagram of an embodiment of an automatic grouting system provided by the present utility model. Specific embodiments

[0019] The core of the present utility model is to provide an automatic grouting system, which can not only realize the automatic grouting of drilling fluid at the oil operation site, improve efficiency, but also accurately measure the volume of the injected and outflowing drilling fluid, providing guarantee for safety diagnosis.

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the scope of protection of the present utility model.

[0021] An embodiment of an automatic grouting system provided by the present utility model is as Figure 1 shown Figure 1FIG. 0 is an overall schematic diagram of an embodiment of an automatic grouting system provided by the present utility model. The automatic grouting system may include a metering container 1, a measurement and control device 2, and a liquid level detection component 3 for detecting the liquid level information in the metering container 1. It should be noted that the metering container 1 is used to hold drilling fluid, that is, mud. The whole can preferably be a cuboid, with a ladder connected to the side and a fence connected around the top. The measurement and control device 2 can preferably be placed on the top of the metering container 1. It can adopt a variety of electrical signals and feedback signals of electric valves, and control the automatic operation of each process by judging the collected signals. The liquid level detection component 3 can be used to detect the liquid level height at all times. Combining with the cross-sectional area of the metering container, the volume of the mud in it, the volume of the mud poured during the grouting process, and the volume of the mud returned to the metering container during the mud return process can be automatically calculated. There is a grouting pipeline 4 and a mud return pipeline 5 between the metering container 1 and the wellbore. The grouting pipeline 4 provides a path for the drilling fluid to flow into the wellhead. The mud in the metering container 1 can enter the wellbore through the grouting pipeline 4. When there is too much mud in the wellbore, it can return to the metering container 1 through the mud return pipeline 5. There is a grouting pump 401 in the grouting pipeline 4. The grouting pump 401 is used to provide power for the grouting process to grout the wellhead during the drill lifting process or the electric logging process. It can be placed on the top of the metering container 1. A first electric valve 501 is provided in the mud return pipeline 5. When the first electric valve 501 is opened, the mud return process can be realized. When the first electric valve 501 is closed, the mud return process can be stopped. The measurement and control device 2 is electrically connected to the liquid level detection component 3, and the measurement and control device 2 is electrically connected to the first electric valve 501 to automatically open or close the first electric valve 501 to control the mud return process and obtain the mud return volume according to the liquid level information. It should be noted that the obtained mud return volume can be used to assist in judging whether there is an overflow or leakage situation. The measurement and control device 2 is electrically connected to the grouting pump 401 to automatically open or close the grouting pump 401 according to the target grouting volume and the liquid level information to control the grouting process. Specifically, when a signal indicating the need for grouting is obtained, the grouting is automatically started. During the grouting process, the volume of the mud that has been poured can be known according to the drop of the liquid level. If the target grouting volume has not been reached, the grouting continues. When the target grouting volume is reached, the grouting pump 401 is automatically closed to stop the grouting. It can be seen that in this way, there is no need for personnel on duty, and the control of the grouting volume is more accurate.

[0022] As can be seen from the above technical solution, in the embodiment of the automatic grouting system provided by the present utility model, since it includes a metering container, a measurement and control device, and a liquid level detection component, there are a grouting pipeline and a slurry return pipeline between the metering container and the wellbore. There is a grouting pump in the grouting pipeline, and a first electric valve is arranged in the slurry return pipeline. The measurement and control device is electrically connected to the liquid level detection component, and the measurement and control device is electrically connected to the first electric valve to automatically open or close the first electric valve to control the slurry return process and obtain the slurry return volume according to the liquid level information. The measurement and control device is electrically connected to the grouting pump to automatically open or close the grouting pump according to the target grouting volume and the liquid level information to control the grouting process. It can be seen that through the combination of the metering container, the measurement and control device, and the liquid level detection component with the grouting pipeline and the slurry return pipeline, the grouting process and the slurry return process can be automatically controlled, and the grouting volume and the slurry return volume can be obtained accurately and efficiently, thereby providing a basis for the safety detection of the current pipeline operation. It can be seen that this system can not only realize the automatic grouting of drilling fluid in the oil operation site, improve the efficiency, but also accurately measure the volume of the drilling fluid poured in and out, providing guarantee for safety diagnosis.

[0023] In a specific embodiment of the above automatic grouting system, continue to refer to Figure 1 , there is a slurry discharge pipeline 6 between the metering container 4 and the mud tank. A slurry discharge pump 601 and a second electric valve group 602 are arranged in the slurry discharge pipeline 6. The measurement and control device 2 is electrically connected to both the slurry discharge pump 601 and the second electric valve group 602 to automatically open or close the slurry discharge pump 601 and the second electric valve group 602 according to the liquid level information to control the slurry discharge process. It should be noted that when the liquid level information collected by the measurement and control device 2 indicates that the liquid level in the metering container 4 is too high, the slurry discharge pump and the second electric valve group are controlled to open to discharge the liquid therein into the mud tank to lower the liquid level in the metering container. When the liquid level drops to a certain extent, the slurry discharge pump and the second electric valve group are controlled to close to stop the slurry discharge process. It can be seen that this slurry discharge process can also be automatically controlled to ensure that the liquid level in the metering container 4 is at an appropriate height.

[0024] In a further embodiment, continue to refer to Figure 1, there is also a slurry replenishment pipeline 7 between the metering container 4 and the slurry tank. A slurry replenishment pump 701 and a third electric valve group 702 are arranged in the slurry replenishment pipeline 7. The measurement and control device 2 is electrically connected to both the slurry replenishment pump 701 and the third electric valve group 702 to automatically turn on or off the slurry replenishment pump 701 and the third electric valve group 702 according to the liquid level information to control the slurry replenishment process. In this case, when the liquid level information collected by the measurement and control device 2 indicates that the liquid level in the metering container 4 is too low, it controls the slurry replenishment pump and the third electric valve group to open to replenish the liquid in the slurry tank into the metering container 4 to raise the liquid level in the metering container. When the liquid level rises to a certain extent, it controls to close the slurry replenishment pump and the third electric valve group to stop the slurry replenishment process. It can be seen that this slurry replenishment process can also achieve automatic control to ensure that the liquid level in the metering container 4 is at an appropriate height.

[0025] In a further embodiment, continue to refer to Figure 1 , the above-mentioned 601 slurry discharge pump and the slurry replenishment pump 701 are the same reverse slurry pump. This reverse slurry pump can be placed on the side of the metering container 4. Here, using one reverse slurry pump can simultaneously achieve the slurry discharge and slurry replenishment processes. These two processes can be switched by controlling the opening and closing of each electric valve. And the second electric valve group 602 can include a second electric valve 6021 and a third electric valve 6022. The second electric valve 6021 can be located between the slurry discharge port of the metering container 4 and the reverse slurry pump. The third electric valve 6022 is located between the reverse slurry pump and the slurry tank. The third electric valve group 702 can include a fourth electric valve 7021 and a fifth electric valve 7022. The fourth electric valve 7021 is located between the slurry tank and the reverse slurry pump. The fifth electric valve 7022 is located between the reverse slurry pump and the slurry inlet of the metering container 4. The measurement and control device 4 is electrically connected to the second electric valve 6021, the third electric valve 6022 and the reverse slurry pump to automatically turn on the second electric valve 6021, the third electric valve 6022 and the reverse slurry pump to control the slurry discharge process when the liquid level is too high. And the measurement and control device 4 is electrically connected to the fourth electric valve 7021 and the fifth electric valve 7022 to automatically turn on the fourth electric valve 7021, the fifth electric valve 7022 and the reverse slurry pump to control the slurry filling process when the liquid level is too low. It can be seen that one pump body can be used less here, thus further saving the manufacturing cost. By opening and closing the electric valves, the precise slurry discharge and replenishment processes can be achieved without manual operation, with higher efficiency, and the liquid level in the metering container 4 can be maintained within an appropriate height range.

[0026] Based on the above embodiment of the automatic grouting system, continue to refer to Figure 1, the liquid level detection component 3 may include an ultrasonic liquid level sensor 301 disposed in the metering container 4. It should be noted that the ultrasonic liquid level sensor 301 can be placed at the top of the metering container to measure the liquid level height of the drilling fluid in the metering container in real time and provide an accurate liquid level height signal to the measurement and control device. It can emit ultrasonic pulses through a transmitter. These pulses are reflected back when they encounter the liquid surface and are captured by the receiver. The sensor calculates the time from the emission to the reception of the ultrasonic wave and combines the known sound speed to determine the liquid level height. Of course, other types of liquid level sensors can also be selected according to actual needs, which is not limited here. Further, continue to refer to Figure 1 , the liquid level detection component 3 may further include a float limiter 302 disposed in the metering container 4. The measurement and control device 2 is used to automatically close the first electric valve 401 and the slurry return pump to stop the slurry return and make-up when receiving the limit signal transmitted from the float limiter 302. The float limiter 302 can be placed at the top of the metering container. When the ultrasonic liquid level sensor is damaged or fails or the slurry return amount from the wellhead cannot be discharged from the metering container in time, it can prevent the liquid level of the drilling fluid in the metering container from being too high, resulting in the drilling fluid overflowing from the metering container and causing leakage problems. In this case, when the liquid level is too high, it will trigger the action of the float limiter and provide a float limit signal to the measurement and control device, thereby triggering an alarm and automatically shutting down the slurry return pump and automatically closing the first electric valve to prevent the slurry make-up and return process from continuing and increasing the liquid level in the metering container. It can be seen that using such a float limiter can better ensure the safety of the overall system.

[0027] Furthermore, the system may further include an alarm indication component electrically connected to the measurement and control device 2 for giving an alarm indication when receiving the limit signal. Specifically, it can use a flashing light or a sound for alarm, or a combination of both, so that the staff can timely know the current situation and manually handle it in time when necessary, thereby better ensuring the safety of the system.

[0028] In another specific embodiment of the above automatic grouting system, continue to refer to Figure 1, the above-mentioned measurement and control device 2 is also electrically connected to the hook load sensor 8 and the drawworks encoder 9. The measurement and control device 2 is also used to judge the drilling operation conditions according to the hook load information and the drawworks coding information, obtain the number of drill strings, and analyze the overflow or loss situation in the wellbore in combination with the liquid level information. Specifically, the hook load sensor 8 is installed on the oil pipeline of the drilling weight indicator, and measures the hook load value of the traveling block by sensing the size of the pipeline oil pressure. The drawworks encoder 9 is installed on the rotating shaft of the drawworks drum, and is used to sense the number of rotations of the drawworks drum. By recording the number of rotations of the drawworks drum, the value of the hook height of the traveling block can be calculated. Through the hook height value of the traveling block and the above-mentioned hook load value, it is possible to judge drilling conditions such as pulling out and running in the drill string, and automatically count the number of drill strings during pulling out and running in. The grouting operation can be automatically started according to the set quantity value (3 - 5 stands of drill pipe drill string, 1 stand of drill collar drill string). When the measurement and control device monitors the return slurry, the grouting operation is automatically stopped. During the grouting operation, the reverse slurry pump is prohibited from starting to prevent interference with the accurate measurement of the grouting volume.

[0029] Specifically, the on-site working condition of pulling up or lowering is judged by judging the number of layers and turns of the drawworks drum, and then combined with the hook load signal to judge whether it is pulling out or running in the drill string, and whether it is a drill pipe drill string or a drill collar drill string. The hook load signal is measured by a deadweight sensor and is used to judge the on-site drilling pulling out and running in conditions in real time. When the hook load signal has a larger value during pulling up and a lighter value during lowering, it indicates pulling out the drill string. When the hook load signal has a lighter value during pulling up and a larger value during lowering, it indicates running in the drill string. According to the hook load signal, the on-site pulling out and running in conditions are judged, and the corresponding signal is provided to the measurement and control device to control the automatic grouting system for grouting. After the grouting is completed, the grouting volume is automatically measured, and the overflow or loss situation in the wellbore is analyzed and warned in combination with the displacement volume of the drill string. It should be noted that the displacement volume of the drill string here refers to the equivalent drill string volume replaced by the drilling fluid volume, and the unit displacement volume refers to the average displacement volume per unit length of the drill string, that is, the unit volume value of the drill string. The unit displacement volume of various drill strings can be determined by looking up the table, or can be approximately estimated by dividing the unit mass of the drill string by the density of the drill string steel. Multiplying the unit displacement volume by the length of the drill string can calculate the displacement volume of the drill string. This parameter can be input into the above-mentioned measurement and control device in advance to provide a basis for automatic calculation.

[0030] In this case, not only can the automatic grouting of the drilling fluid in the oil operation site be realized, but also the volume of the injected or returned drilling fluid can be accurately measured. The number of drill strings during pulling out and running in can be automatically counted and the displacement volume of the drill string can be calculated. Furthermore, the overflow or loss situation in the wellbore during pulling out and running in can be automatically analyzed and warned, reducing the workload and measurement error of the well control personnel on duty and ensuring the construction safety of the drilling site.

[0031] Based on each of the above embodiments of the automatic grouting system, it may further include a touch display device electrically connected to the measurement and control device 2. Such a touch display device is also a human-computer interaction unit, which is used to display the current working state of the automatic grouting system and can also realize the operation setting of basic parameters, thus being more suitable for quick operation. In addition, it may further include a power distribution cabinet for power supply disposed on the outer side of the metering container, and this power distribution cabinet can be used to supply power to each device that needs electricity in the above entire system.

[0032] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic grouting system, characterized in that, It includes a metering container, a measurement and control device, and a liquid level detection component for detecting the liquid level information in the metering container. There are a grouting pipeline and a slurry return pipeline between the metering container and the wellbore. A grouting pump is provided in the grouting pipeline, and a first electric valve is arranged in the slurry return pipeline. The measurement and control device is electrically connected to the liquid level detection component, and the measurement and control device is electrically connected to the first electric valve to automatically open or close the first electric valve to control the slurry return process and obtain the slurry return volume according to the liquid level information. The measurement and control device is electrically connected to the grouting pump to automatically open or close the grouting pump according to the target grouting volume and the liquid level information to control the grouting process.

2. The automatic grouting system according to claim 1, wherein, There is a slurry discharge pipeline between the metering container and the mud tank. A slurry discharge pump and a second electric valve group are arranged in the slurry discharge pipeline. The measurement and control device is electrically connected to both the slurry discharge pump and the second electric valve group to automatically open or close the slurry discharge pump and the second electric valve group according to the liquid level information to control the slurry discharge process.

3. The automatic grouting system according to claim 2, characterized in that, There is also a slurry replenishment pipeline between the metering container and the mud tank. A slurry replenishment pump and a third electric valve group are arranged in the slurry replenishment pipeline. The measurement and control device is electrically connected to both the slurry replenishment pump and the third electric valve group to automatically open or close the slurry replenishment pump and the third electric valve group according to the liquid level information to control the slurry replenishment process.

4. The automatic grouting system according to claim 3, wherein, The slurry discharge pump and the slurry replenishment pump are the same reverse slurry pump. The second electric valve group includes a second electric valve and a third electric valve. The second electric valve is located between the mud discharge port of the metering container and the reverse slurry pump, and the third electric valve is located between the reverse slurry pump and the mud tank. The third electric valve group includes a fourth electric valve and a fifth electric valve. The fourth electric valve is located between the mud tank and the reverse slurry pump, and the fifth electric valve is located between the reverse slurry pump and the mud inlet of the metering container. The measurement and control device is electrically connected to the second electric valve, the third electric valve, and the reverse slurry pump to automatically open the second electric valve, the third electric valve, and the reverse slurry pump to control the mud discharge process when the liquid level is too high. The measurement and control device is electrically connected to the fourth electric valve and the fifth electric valve to automatically open the fourth electric valve, the fifth electric valve, and the reverse slurry pump to control the mud filling process when the liquid level is too low.

5. The automatic grouting system according to claim 4, wherein, The liquid level detection component includes an ultrasonic liquid level sensor arranged in the metering container.

6. The automatic grouting system according to claim 5, characterized in that The liquid level detection component further includes a float limiter arranged in the metering container. The measurement and control device is used to automatically close the first electric valve and the reverse slurry pump to stop the slurry return and replenishment when receiving the limit signal from the float limiter.

7. The automatic grouting system according to claim 6, wherein, It also includes an alarm indication component electrically connected to the measurement and control device for alarm indication when receiving the limit signal.

8. The automatic grouting system according to any one of claims 1-7, characterized in that, The measurement and control device is also electrically connected to a hook load sensor and a winch encoder. The measurement and control device is also used to judge the drilling operation conditions according to the hook load information and the winch coding information, obtain the number of drill strings, and analyze the overflow or loss situation in the wellbore in combination with the liquid level information.

9. The automatic grouting system according to claim 8, wherein, It also includes a touch display device electrically connected to the measurement and control device.

10. The automatic grouting system according to claim 9, characterized in that, It further includes a power distribution cabinet for power supply, which is disposed on the outer side surface of the metering container.

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