Well cementation cementing construction monitoring system and monitoring method

Abstract

The invention relates to a well cementation and cementing construction monitoring system and method.The well cementation and cementing construction monitoring system comprises a central control room and at least two flow densimeters, one flow densimeter is arranged on a communication channel of a buffer tank and a cement head, and the other flow densimeter is arranged on a communication channel of a mud pit and the cement head; the at least two flow densimeters are in communication connection with the central control room, and the central control room is used for obtaining corresponding flow and density data through the at least two flow densimeters. According to the well cementation cementing construction monitoring system, by arranging the central control room and the at least two flow densimeters, cement slurry and flow and density data of the slurry can be monitored in time through the flow densimeters, and then the cementing construction condition can be automatically monitored conveniently.

Description

Technical Field

[0001] The present application relates to the technical field of cementing construction, and in particular to a cementing construction monitoring system and a monitoring method. Background Art

[0002] In recent years, petroleum engineering technology has developed rapidly. Many problems in engineering construction can be solved by automated equipment. The use of automated equipment is an indispensable means to reduce the workload of engineering construction. Therefore, the field of petroleum engineering has begun to develop from informatization to automation, and cementing engineering, as a sub-field of petroleum engineering, is no exception. Cementing engineering is a key link that affects the quality of the wellbore, and scientific cementing is the guarantee of successful cementing. The smooth progress of cementing construction is related to many factors, such as cement slurry properties, cement slurry density, injection displacement, etc. Foreign oilfield service companies have developed automated cementing equipment by combining theory with experiments. Using these automated cementing equipment, foreign oilfield service companies have good guidance in the field of automated cementing. However, due to intellectual property protection reasons, large foreign oil service companies currently do not specifically sell automated cementing related equipment to the outside world. Therefore, the development of independent automated cementing equipment has become a key technology in the field of cementing in my country.

[0003] During the cementing on-site construction, the construction safety of the cementing process is very important. Since the cementing process is irreversible and if errors occur during the construction process, there will be problems such as high cost of remedial measures, complex technology and poor wellbore sealing performance.

[0004] In the process of automated cementing construction, since the entire process uses automated equipment for construction and lacks the participation of construction personnel, the real-time monitoring and risk warning system of cementing construction, one of the important processes in cementing construction, is crucial. Summary of the invention

[0005] Based on this, it is necessary to provide a cementing construction monitoring system and a monitoring method that can monitor cementing construction, reduce safety hazards in construction, and realize risk warning.

[0006] In the first aspect, the present application provides a cementing construction monitoring system, which is used in the cementing construction system. The cementing construction system includes a buffer tank, a cement head and a mud pool. The buffer tank and the mud pool are respectively connected to the cement head. The cement head is used to perform cementing construction on the cement slurry in the buffer tank and to inject the mud displaced from the wellbore annulus during the cementing construction process into the mud pool. The cementing construction monitoring system includes a central control room and at least two flow density meters, one of which is arranged on the connecting passage between the buffer tank and the cement head, and the other of the at least two flow density meters is arranged on the connecting passage between the mud pool and the cement head. At least two of the flow density meters are communicatively connected to the central control room, and the central control room is used to obtain corresponding flow and density data through at least two flow density meters.

[0007] The above-mentioned cementing construction monitoring system is equipped with a central control room and at least two flow density meters, one of which is arranged on the connecting passage between the buffer tank and the cement head, and the other is arranged on the connecting passage between the mud pool and the cement head. In this way, the flow and density data of cement slurry and mud can be monitored in time by the flow density meter, so that the cementing construction status can be automatically monitored, the reliability of the cementing construction can be ensured, the safety hazards in the construction can be reduced, and risk warnings can be realized when abnormalities occur.

[0008] In one embodiment, the cementing construction monitoring system also includes multiple monitoring devices, at least one monitoring device is arranged near at least one device in the buffer tank, the cement head and the mud pool, and is used for video monitoring of the corresponding equipment, and the multiple monitoring devices are all communicatively connected to the central control room.

[0009] In one embodiment, the monitoring device includes a pole and a display panel, a warning light, a smart camera, a data transceiver module and a controller respectively installed on the pole. The display panel, the warning light, the smart camera and the data transceiver module are all electrically connected to the controller, and the data transceiver module is used to communicate with the central control room.

[0010] In one of the embodiments, the cementing construction monitoring system integrates cementing construction functions and monitoring, and the cementing construction monitoring system includes the buffer tank, the cement head and the mud pool.

[0011] In one embodiment, the cementing construction monitoring system further includes a cement ash tank and a water tank, and the cement ash tank and the water tank are respectively connected to the buffer tank.

[0012] In one of the embodiments, the cementing construction monitoring system also includes an automated cement pump truck, the buffer tank is connected to the cement head through the automated cement pump truck, and at least one of the two flow density meters is arranged on the connecting passage between the automated cement pump truck and the cement head.

[0013] In one of the embodiments, the number of the flow density meters is at least three, and the third of the at least three flow density meters is disposed on the connecting passage between the buffer tank and the automated cement pump truck.

[0014] In one embodiment, the cementing construction monitoring system further includes a drilling platform, and the cement head is located in the drilling platform.

[0015] In one embodiment, the cementing construction monitoring system further includes at least one of the following af technical features:

[0016] a. The cement ash tank is an automated cement ash tank, which has an automatic control gate valve system and a data transceiver module, and the data transceiver module is used to send the cement ash remaining data in the cement ash tank to the central control room in real time, and the central control room is used to control the automatic control gate valve system to realize the automatic ash supply and tank emptying functions of the automated cement ash tank;

[0017] b. The water tank is an automatic water tank, which has an automatic control gate valve system and a data transceiver module. The data transceiver module is used to send the liquid remaining data in the automatic water tank to the central control room in real time. The central control room is used to control the automatic control gate valve system of the automatic water tank to realize the automatic water supply and tank emptying functions of the automatic water tank;

[0018] c. The buffer tank is an automatic buffer tank, and the automatic buffer tank has an automatic control gate valve system and a data transceiver module, and the data transceiver module is used to send the liquid residual data in the automatic buffer tank to the central control room in real time, and the central control room is used to control the automatic control gate valve system of the automatic water tank to realize the function of controlling whether the cement slurry flows out;

[0019] d. The cement pump truck is an automated cement pump truck, which has an automatic control gate valve system and a data transceiver module, and the data transceiver module is used to send the liquid residual volume and density data in the automated cement pump truck to the central control room in real time, and the central control room is used to control the automatic control gate valve system of the automated cement pump truck to realize the function of whether the cement slurry flows out;

[0020] e. The cement head is an automated cement head, which has an automatic control gate valve system and a data transceiver module, wherein the data transceiver module is used to send data of the automated cement head to the central control room, and the central control room is used to control the automatic control gate valve system of the automated cement head to achieve the function of controlling the automated slurry replacement;

[0021] f. The corresponding communication passages between the cement ash tank, the buffer tank, the cement pump truck, the cement head and the mud pool are connected through high-pressure pipelines.

[0022] In one embodiment, the number of the monitoring devices is at least 10, wherein, among the 10 monitoring devices, 6 of the automated monitoring devices are arranged around the automated cement ash tank, the automated water tank, the automated buffer tank, the high-pressure flow density meter and the automated cement pump truck; 2 of the automated monitoring devices are arranged on both sides of the automated cement head of the drilling platform, and 2 of the automated monitoring devices are arranged around the mud pool.

[0023] In a second aspect, the present application provides a cementing construction monitoring method, comprising the following steps:

[0024] Monitor and obtain cement slurry flow and density data;

[0025] Monitor and obtain the flow and density data of mud discharge;

[0026] According to the flow rate and density data of the cement slurry and the flow rate and density data of the mud discharge, it is judged whether the cement construction is abnormal, and an alarm message is issued if it is abnormal.

[0027] In one embodiment, the cementing construction monitoring method is applied to the cementing construction monitoring system as described in any of the above embodiments, wherein the cementing construction monitoring system includes a central control room, multiple flow density meters, an automated buffer tank, a cement head, a mud pool, multiple monitoring devices, an automated cement ash tank, an automated water tank, and an automated cement pump truck.

[0028] In one embodiment, the cementing construction monitoring method further includes:

[0029] According to the preset instructions of the central control room, the automatic control gate valve system and the data transceiver module of the automatic cement ash tank, the automatic water tank, and the automatic buffer tank are controlled and monitored during the cementing construction process to see if they are abnormal, and if so, an alarm message is issued.

[0030] In one embodiment, the cementing construction monitoring method further includes:

[0031] According to the preset instructions of the central control room, the automatic control gate valve system and the data transceiver module of the automatic cement head are controlled and monitored during the cementing construction process to see if they are abnormal, and if so, an alarm message is issued.

[0032] In one embodiment, the cementing construction monitoring method further includes:

[0033] According to the preset instructions of the central control room system, the automatic control gate valve system and the data transceiver module of the automatic cement pump truck are controlled and monitored during the cementing construction process to see if they are abnormal, and if so, an alarm message is issued.

[0034] In one embodiment, the cementing construction monitoring method further includes:

[0035] According to the monitoring device, the working conditions of the equipment corresponding to the monitoring device during the cementing construction process are identified and monitored to determine whether the cementing construction is abnormal, and if so, an alarm message is issued.

[0036] The above-mentioned cementing construction monitoring method can automatically monitor the cementing construction status better by monitoring and obtaining the flow and density data of cement slurry and mud respectively, and issue an alarm message when the cementing construction is judged to be abnormal, thereby being able to play a certain early warning function and improving the reliability of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A schematic diagram of a cementing construction monitoring system according to an embodiment;

[0038] Figure 2 A schematic diagram of the structure of a monitoring device of a cementing construction monitoring system according to an embodiment;

[0039] Figure 3 Schematic diagram of a cementing construction monitoring system according to an embodiment. DETAILED DESCRIPTION

[0040] In order to facilitate the understanding of the present application, in order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application, and the preferred implementation methods of the present application are given in the accompanying drawings. However, the present application can be implemented in many different forms and is not limited to the implementation methods described herein. On the contrary, the purpose of providing these implementation methods is to make the disclosure of the present application more thoroughly and comprehensively understood. The present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited to the specific embodiments disclosed below. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In the description of the present application, the meaning of "several" is at least one, such as one, two, etc., unless otherwise clearly and specifically defined. It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be a centered element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a centered element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application. The terms used herein are only for the purpose of describing specific implementation methods and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0041] In the first aspect, the present application provides a cementing construction monitoring system, which is applied in the cementing construction system. Figure 1The cementing construction system includes a buffer tank 3, a cement head 6 and a mud pool 10. The buffer tank 3 is used to provide cement slurry. The mud pool is used to store mud displaced from the wellbore annulus during the cementing construction process. The buffer tank 3 and the mud pool 10 are respectively connected to the cement head 6. The cement head 6 is used to realize automatic slurry replacement for cementing, that is, by injecting cement slurry and discharging the mud displaced from the well. The cement head 6 is used to carry out cementing construction with the cement slurry in the buffer tank 3 and to replace the mud in the well during cementing construction and inject it into the mud pool 10. Usually, the cement head 6 corresponds to the wellbore. The cement head 6 is used to pump the cement slurry provided by the buffer tank 3 into the well and replace the mud in the well. The replaced mud is discharged into the mud pool 10. It should be noted that cement slurry and mud are not the same thing. Cement slurry is used for cementing construction, and the mud in the well needs to be replaced during cementing construction and discharged into the mud pool. The injection of cement slurry and the discharge of mud in the well are both key links affecting the quality of the wellbore. In order to better monitor it, the cementing construction monitoring system provided in the present application includes a central control room 9 and at least two flow density meters 4, one of the flow density meters 4 is arranged on the connecting passage between the buffer tank 3 and the cement head 6, and the other flow density meter 4 is arranged on the connecting passage between the mud pool 10 and the cement head 6. At least two of the flow density meters 4 are communicatively connected to the central control room 9, and the central control room 9 is used to obtain corresponding flow and density data through at least two of the flow density meters 4, that is, to monitor and obtain the injection flow and density data of the cement slurry and the discharge flow and density data of the mud respectively.

[0042] The above-mentioned cementing construction monitoring system is provided with a central control room 9 and at least two flow density meters 4, one of which is provided on the connecting passage between the buffer tank 3 and the cement head 6, and the other is provided on the connecting passage between the mud pool 10 and the cement head 6. In this way, the flow density meter 4 can timely monitor the flow and density data of cement slurry and mud, so as to facilitate automatic monitoring of the cementing construction status, ensure the reliability of cementing construction, reduce the safety hazards in the construction, and realize risk warning when there are abnormalities. If necessary, the automatic instruction construction can be canceled, and manual construction can be carried out to eliminate the hidden dangers. Specifically, the buffer tank 3 and the mud pool 10 are connected to the cement head 6 through the high-pressure pipeline 7 respectively. It should be known to those skilled in the art that the buffer tank 3, the mud pool 10, the cement head 6 and the high-pressure pipeline 7 provided in this embodiment can refer to the corresponding equipment of the existing cementing construction. This embodiment mainly realizes the function of monitoring and controlling the cementing construction.

[0043] In one embodiment, see Figure 1The cementing construction monitoring system further includes a plurality of monitoring devices 8, at least one of which is arranged near at least one of the buffer tank 3, the cement head 6 and the mud pool 10, and is used for video monitoring of the corresponding equipment. The plurality of monitoring devices 8 are all connected to the central control room 9 for communication, so that the central control room 9 can conveniently monitor the operation status of the corresponding equipment through the monitoring devices 8. For example, the monitoring device is a video monitoring device. In one embodiment, Figure 2 As shown, the monitoring device 8 includes a pole 12 and a display panel 13, a warning light 14, an intelligent camera 15, a data transceiver module 16 and a controller respectively installed on the pole 12. The display panel 13, the warning light 14, the intelligent camera 15 and the data transceiver module 16 are all electrically connected to the controller, and the data transceiver module 16 is used to communicate with the central control room 9. In this way, the monitoring device 8 can provide certain display and warning information on the basis of video monitoring. Specifically, for example, when the central control room 9 monitors the corresponding flow density abnormality through the flow density meter 4, an operation alarm message is issued. The operation alarm message can be displayed through the display panel 13, and can also be warned through the warning light 14, so as to facilitate remote provision to the on-site operator or on-site personnel. In another embodiment, the pole is a rotating pole, which can be controlled by the controller to rotate the pole, so as to facilitate the adjustment of the video monitoring position and the display angle of the display panel as needed. In addition, the monitoring device can also be used to monitor the equipment operation status, on-site working conditions and the operation status of construction personnel in the well site of the corresponding equipment. The central control room is used to determine whether there is any abnormal information based on the operation status, on-site working conditions and the operation status of construction personnel in the well site, and issue an operation alarm message if there is any abnormal information.

[0044] In one of the embodiments, please refer again to Figure 1 The cementing construction monitoring system integrates cementing construction functions and monitoring, that is, it combines monitoring functions and cementing construction functions at the same time. The cementing construction monitoring system includes the buffer tank 3, the cement head 6 and the mud pool 10. In other words, the cementing construction monitoring system of the present application and the related equipment of cementing construction, the buffer tank 3, the cement head 6 and the mud pool 10 are also components of the cementing construction monitoring system of the present application.

[0045] To further automate the cementing operation, in one embodiment, refer to Figure 3The cementing construction monitoring system further includes a cement ash tank 1 and a water tank 2, wherein the cement ash tank 1 and the water tank 2 are connected to the buffer tank 3 respectively. The cement ash tank 1 is used to supply cement ash, and the water tank 2 is used to supply water and other liquid agents of cement slurry. The cement ash tank 1 and the water tank 2 are connected to the buffer tank 3 through a high-pressure pipeline 7 respectively, and the buffer tank 3 is used to mix the water supplied by the water tank 2, other liquid agents and the cement ash supplied by the cement ash tank 1 into cement slurry and supply it to the cement head 6. In one embodiment, the cementing construction monitoring system further includes an automated cement pump truck 5, wherein the buffer tank 3 is connected to the cement head through the automated cement pump truck 5, and the automated cement pump truck 5 is used to pump the cement slurry in the buffer tank 3 to the cement head, and the flow density meter 4, one of the at least two aforementioned, is arranged on the connecting passage between the automated cement pump truck 5 and the cement head 6, and is used to monitor the flow and density data of the cement slurry pumped into the cement head. For another example, the buffer tank 3 is connected to the automated cement pump truck 5 via a high-pressure pipeline 7 , and the automated cement pump truck 5 is connected to the cement head 6 via a high-pressure pipeline 7 .

[0046] In order to further monitor the transportation status of cement slurry between the buffer tank 3 and the automatic cement pump truck 5, and to facilitate understanding of the operating conditions of the automatic cement pump truck 5, in one embodiment, the number of the flow density meter 4 is at least three (4-1, 4-2, 4-3), one of the flow density meters 4-1 is arranged on the connecting passage between the buffer tank 3 and the cement head 6, the second flow density meter 4-2 is arranged on the connecting passage between the cement head 6 and the mud pool 10, and the third flow density meter 4-3 is arranged on the connecting passage between the buffer tank 3 and the automatic cement pump truck 5, for monitoring the flow and density data of cement slurry between the buffer tank 3 and the automatic cement pump truck 5. For another example, the flow density meters 4 are all high-pressure flow density meters. For another example, the flow density meter 4 is arranged in or on the corresponding high-pressure pipeline 7, for another example, a wireless transceiver is connected to the flow density meter 4, for another example, the flow density meter is connected to the central control room 9 through the wireless transceiver, for another example, the flow density meter is an electronic flow density meter, and for another example, the flow density meter is an electronic high-pressure flow density meter.

[0047] In one embodiment, the number of the water tank 2 and the cement ash tank 1 is at least two, so that the supply speed of cement slurry can be improved. For example, the number of the automated cement pump trucks 5 is also at least two, one of which is involved in the construction, and the other is a spare truck to deal with emergencies to ensure that the cementing construction can operate continuously.

[0048] In one embodiment, the cementing construction monitoring system further includes a drilling platform 11, and the cement head 6 is located in the drilling platform 11. It can also be understood that the drilling platform 11 has the cement head 6. Of course, the specific structures of the drilling platform 11 and the cement head 6 are referred to the prior art, and this application will not repeat them here.

[0049] In one embodiment, the cement ash tank 1 is an automated cement ash tank 1, and the automated cement ash tank 1 has an automatic control gate valve system and a data transceiver module, and the data transceiver module is used to send the cement ash remaining data in the cement ash tank to the central control room in real time, and the central control room is used to control the automatic control gate valve system to achieve the automatic ash supply and emptying function of the automated cement ash tank. In the present application, the automated cement ash tank 1 has an automatic control gate valve system and a data transceiver module, and the data transceiver module can send the cement ash remaining data in the tank to the automated central control room 9 in real time, and the automated central control room 9 can also control the automatic control gate valve system of the automated cement ash tank 1 by means of command transmission, etc., so as to achieve the automatic ash supply and emptying function of multiple automated cement ash tanks 1 during cementing construction.

[0050] In one embodiment, the water tank 2 is an automated water tank 2, which has an automatic control gate valve system and a data transceiver module. The data transceiver module is used to send the liquid remaining data in the automated water tank to the central control room in real time. The central control room is used to control the automatic control gate valve system of the automated water tank to achieve automatic water supply and emptying functions of the automated water tank. In this way, the automated water tank 2 has an automatic control gate valve system and a data transceiver module. The data transceiver module can send the liquid remaining data in the tank to the automated central control room 9 in real time. The automated central control room 9 can also control the automatic control gate valve system of the automated water tank 2 by command transmission and other methods to achieve automatic water supply and emptying functions of multiple automated water tanks 2 during cementing construction.

[0051] In one embodiment, the buffer tank 3 is an automatic buffer tank 3, and the automated buffer tank has an automatic control gate valve system and a data transceiver module. The data transceiver module is used to send the liquid remaining data in the automatic buffer tank to the central control room in real time. The central control room is used to control the automatic control gate valve system of the automated water tank to achieve the function of controlling whether the cement slurry flows out and the function of controlling the outflow speed; in this way, the automated buffer tank 3 has an automatic control gate valve system and a data transceiver module. The data transceiver module can send the liquid remaining data in the tank to the automated central control room 9 in real time. The automated central control room 9 can also control the automatic control gate valve system of the automated water tank 2 by command transmission and other methods to achieve the function of smoothly supplying cement slurry during cementing construction.

[0052] In one embodiment, the cement pump truck 5 is an automated cement pump truck 5, which has an automatic control gate valve system and a data transceiver module. The data transceiver module is used to send the liquid residual volume and density data in the automated cement pump truck to the central control room in real time. The central control room is used to control the automatic control gate valve system of the automated cement pump truck to realize the function of whether the cement slurry flows out and the function of the outflow speed; in this way, the automated cement pump truck 5 has an automatic control gate valve system and a data transceiver module. The data transceiver module can send the liquid residual volume and density data in the vehicle to the automated central control room 9 in real time. The automated central control room 9 can also control the automatic control gate valve system of the automated cement pump truck 5 by command transmission and other methods to achieve the function of smooth supply of cement slurry during cementing construction.

[0053] In one embodiment, the cement head 6 is an automated cement head 6, which has an automatic control gate valve system and a data transceiver module. The data transceiver module is used to send data of the automated cement head to the central control room, and the central control room is used to control the automatic control gate valve system of the automated cement head to achieve the function of controlling the automated slurry replacement. In this way, the automated cement head 6 has an automatic control gate valve system and a data transceiver module, and is linked with other equipment according to the real-time construction situation. The automated central control room 9 sends construction instructions to directly control the various valves of the cement head to achieve the function of automated slurry replacement.

[0054] In one embodiment, the central control room 9 is an automated central control room 9, and the display panel 13 of the automated monitoring device 8 can be used to display warning information and current construction conditions in real time. When the central control room monitors an abnormal problem, the warning light 14 sends a warning in real time. Of course, the judgment of the abnormal problem can also be integrated in the controller of the automated monitoring device, and can also be integrated in the central control room. The abnormal problem includes but is not limited to: abnormal flow and density data, abnormal operation monitored by video, etc. The intelligent camera 15 is used to monitor the equipment operation, on-site working conditions and operation of construction personnel in the well site in real time during the cementing construction process. The automated central control room 9 controls the real-time warning of abnormal conditions, and displays the corresponding warning information through the display panel 13 or the warning light 14. The data transceiver module 16 of the automated monitoring device 8 exchanges data with the automated central control room 9 in real time. If an abnormal condition is encountered during construction, the automated central control room 9 can perform overall construction scheduling based on the warning information sent by the data transceiver module 16. In other words, the automated monitoring room 9 can issue corresponding warning information based on the flow density information monitored by the flow density meter and the equipment operation status, on-site working conditions and operation status of construction personnel in the well site monitored by the automated monitoring device.

[0055] In one embodiment, the corresponding communication paths between the cement ash tank 1, the water tank 2, the buffer tank 3, the cement pump truck 5, the cement head 6 and the mud pool 8 are connected through the high-pressure pipeline 7. Of course, the connection information between the corresponding devices is as described above, and can be combined with Figure 1 or Figure 3 Check.

[0056] In order to improve the monitoring range of the monitoring device, in one embodiment, please combine Figure 3 , the number of the monitoring devices 8 is at least 10, wherein, among the 10 automatic monitoring devices 8, 6 of the automatic monitoring devices 10 are arranged around the automatic cement ash tank 1, the automatic water tank 2, the automatic buffer tank 3, the high-pressure flow density meter 4 and the automatic cement pump truck 5; 2 of the automatic monitoring devices 8 are arranged on both sides of the automatic cement head 6 of the drilling platform 11, and 2 of the automatic monitoring devices 8 are arranged around the mud pool 10. In this way, the monitoring range of the monitoring device can be better improved, and an attempt can be made to achieve monitoring without blind spots.

[0057] For details, please combine Figure 3Among the 10 automatic monitoring devices, the first automatic monitoring device 8-1 is arranged near the automatic cement ash tank 1, and is used to monitor the equipment operation status, on-site working conditions and operation status of the construction personnel in the well site of the automatic cement ash tank; the second automatic monitoring device 8-2 is arranged in the middle position of the automatic water tank 2 and the automatic cement ash tank 1, and is used to monitor the equipment operation status, on-site working conditions and operation status of the construction personnel in the well site of the automatic water tank 2 and the automatic cement ash tank 1 respectively; and the first automatic monitoring device and the second automatic monitoring device are respectively located on the opposite sides of the automatic cement ash tank 1, and the third automatic monitoring device 8-3 is arranged between the automatic buffer tank 3 and the high-pressure flow tank near it. The fourth automatic monitoring device 8-4 is arranged on one side of the automatic buffer tank 3 and the high-pressure flow density meter 4-3 nearby, and is used to monitor the equipment operation status, on-site working conditions and operation status of construction personnel in the well site respectively; the fourth automatic monitoring device 8-4 is arranged on the other side of the automatic buffer tank 3 and the high-pressure flow density meter 4 nearby, and the fourth automatic monitoring device 8-4 is arranged adjacent to the automatic water tank 2 and the automatic cement pump truck 5, and it can also be understood that the fourth automatic monitoring device 8-4 is located between the automatic water tank 2 and the automatic cement pump truck 5, and the fourth automatic monitoring device 8-4 and the second automatic monitoring device 8-2 are respectively located on the two opposite sides of the automatic water tank 2. On the side, the fourth automated monitoring device 8-4 is used to monitor the equipment operation status, on-site working conditions and operation status of the automated buffer tank 3 and the nearby high-pressure flow density meter 4 and the automated water tank 2 respectively; the fifth automated monitoring device 8-5 is located between the automated central control room and the automated cement pump truck 5, and the fifth automated monitoring device 8-5 is used to monitor the equipment operation status, on-site working conditions and operation status of the automated central control room 9 and the automated cement pump truck 5 respectively; the sixth automated monitoring device 8-6 is located between the automated central control room 9, the automated cement pump truck 5, the high-pressure flow density meter 4-1, the mud pool 1 0, the sixth automatic monitoring device 8-6 is used to monitor the equipment operation status, on-site working conditions and operation status of construction personnel in the well site of the automatic central control room 9, the automatic cement pump truck 5, the high-pressure flow density meter 4-1 and the mud pool 10 respectively; the seventh automatic monitoring device 8-7 and the eighth automatic monitoring device 8-8 are arranged on both sides of the automatic cement head 6 of the drilling platform 11, and are used to monitor the equipment operation status, on-site working conditions and operation status of construction personnel in the well site of the automatic cement head 6; the eighth automatic monitoring device 8-8 is arranged closer to the mud pool 10 and the automatic central control room 9 than the seventh automatic monitoring device 8-7;The 9th automatic monitoring device 8-9 and the 10th automatic monitoring device 8-10 are arranged around the mud pool 10, and the 9th automatic monitoring device 8-9 and the 10th automatic monitoring device 8-10 are used together to monitor the operation of the mud pool 10, the on-site working conditions and the operation of the construction personnel in the well site. In this way, all-round monitoring with almost no blind spots can be achieved better. ;

[0058] The above-mentioned cementing construction monitoring system is equipped with a central control room and at least two flow density meters, one of which is arranged on the connecting passage between the buffer tank and the cement head, and the other is arranged on the connecting passage between the mud pool and the cement head. In this way, the flow and density data of cement slurry and mud can be monitored in time through the flow density meter, thereby facilitating automatic monitoring of the cementing construction status.

[0059] In a second aspect, the present application provides a cementing construction monitoring method, comprising the following steps:

[0060] Monitor and obtain cement slurry flow and density data;

[0061] Monitor and obtain the flow and density data of mud discharge;

[0062] According to the flow rate and density data of the cement slurry and the flow rate and density data of the mud discharge, it is judged whether the cement construction is abnormal, and an alarm message is issued if it is abnormal.

[0063] Specifically, a cementing construction monitoring method of the present application is based on the cementing construction monitoring system as described above for monitoring, wherein the high flow density meter 4-1 and the high flow density meter 4-3 monitor and obtain the flow and density data of cement slurry discharge; the high flow density meter 4-2 monitors and obtains the flow and density data of mud discharge; the automated central control room 9 determines whether the cement construction is abnormal according to the flow and density data of cement slurry and the flow and density data of mud discharge, and issues an alarm message if it is. Specifically, when the automated central control room 9 determines that it is abnormal, the display panel and warning light of the automated monitoring device issue a corresponding alarm message. Specifically, the automated central control room is also used to determine whether there is an abnormality according to the equipment operation status, on-site working conditions and operation status of construction personnel in the well site monitored by the automated monitoring device, and if there is an abnormality, the display panel and warning light of the automated monitoring device issue a corresponding alarm message. Specifically, the alarm message includes but is not limited to picture information and sound and light information. For another example, the warning light is an audio-visual integrated warning light, and the audio-visual information is emitted by the warning light. Specifically, the first displacement and density monitoring and recording are performed through the high-pressure flow density meter 4-3 between the automated buffer tank 3 and the automated cement pump truck 5. When the density of the cement slurry exceeds the preset range from the set density error, the automated central control room 9 will send an instruction to control and adjust the density of the cement slurry by adjusting the displacement of the automated cement ash tank 1 or the automated water tank 2. When the cement slurry density is adjusted, the automated central control room 9 controls the automated cement pump truck 5 to pump the cement slurry into the automated cement head 6, and performs the second displacement and density monitoring and recording through the high-pressure flow density meter 4-1 between the automated cement pump truck 5 and the automated cement head 6. The high-pressure flow density meter 4-1 here is for displacement monitoring. If the density error is within the preset range, no density adjustment instruction will be sent. Specifically, the automated central control room 9 monitors the discharged mud through the high-pressure flow density meter 4-2 before entering the mud pool 10. The high-pressure flow density meter 4-2 here mainly measures the displacement of the discharged mud, measures the displacement for the third time, and transmits the displacement data to the automated central control room 9 through the data transmission module. The automated central control room 9 compares the displacement information measured by the high-pressure flow density meter 4 in front of the automated cement pump truck 5, the high-pressure flow density meter 4 in front of the automated cement head 6, and the high-pressure flow density meter 4 in front of the mud pool 10, and determines whether there are other abnormal phenomena such as leakage or well kick in this cementing through the automated central control room 9, and issues corresponding alarm information or early warning information if yes.Specifically, during the entire cementing construction process, multiple automated monitoring devices 8 distributed at various locations in the well site conduct real-time safety monitoring of the equipment and construction personnel in the well site. When encountering problems such as improper operation or improper equipment operation, the automated central control room 9 identifies the warning information. If the automated central control room 9 cannot handle the current abnormality, it will promptly control all equipment to switch to manual control mode. At this time, the equipment in the well site can be taken over by the cementing engineer in the automated central control room 9. The cementing construction operators on standby in the automated central control room 9 can enter the well site to take over the operation of each equipment to achieve safe and smooth cementing construction. During the cementing construction process, the startup, operating status and shutdown of all equipment are controlled by the preset instructions of the automated central control room 9. If an abnormal situation occurs, the automated central control room 9 can also eliminate the abnormal situation according to the set instructions. In other words, the automated central control room 9 is used to determine whether there are any abnormalities based on the information fed back by the high-pressure flow density meter and the automated monitoring device. The abnormalities include but are not limited to cementing construction leakage abnormalities, safety abnormalities, equipment abnormalities, operation abnormalities, etc., and issue warning information when there are corresponding abnormalities. At the same time, the automated central control room 9 will control and handle the abnormalities according to the corresponding operations on the equipment. When it cannot be handled, each device will be converted to manual operation mode, and a reminder message will be issued to remind the standby cementing construction operators to enter the well site to take over the operation of each equipment to achieve safe and smooth cementing construction.

[0064] In one embodiment, the cementing construction monitoring method is applied to the cementing construction monitoring system as described in any of the above embodiments, wherein the cementing construction monitoring system includes a central control room, multiple flow density meters, an automated buffer tank, a cement head, a mud pool, multiple monitoring devices, an automated cement ash tank, an automated water tank, and an automated cement pump truck. In other words, the cementing construction monitoring system adopts the cementing construction monitoring method for monitoring, specifically, the flow and density data of cement slurry are monitored and obtained by flow density meters respectively; the flow and density data of mud discharge are monitored and obtained by flow density meters respectively; the central control room determines whether the cement construction is abnormal based on the flow and density data of cement slurry and the flow and density data of mud discharge, and issues an alarm message if it is. Specifically, the central control room can control the warning light of the monitoring device to issue a warning message, and of course, the warning message can also be issued in other forms, including but not limited to sound, information prompts, text messages, etc.

[0065] In one embodiment, the cementing construction monitoring method further includes:

[0066] According to the preset instructions of the central control room, the automatic control gate valve system and the data transceiver module of the automatic cement ash tank, the automatic water tank, and the automatic buffer tank are controlled and monitored during the cementing construction process to see if they are abnormal, and if so, an alarm message is issued. In other words, the central control room can determine whether the raw material supply for cementing construction is normal based on the operating conditions of the monitored cement ash tank, the automatic water tank, and the automatic buffer tank, and further determine whether the cementing construction is abnormal. In specific operations, the corresponding abnormal threshold can be set according to the parameter details of the normal working conditions.

[0067] In one embodiment, the cementing construction monitoring method further includes:

[0068] According to the preset instructions of the central control room, the automatic control gate valve system and the data transceiver module of the automatic cementing head are controlled and monitored during the cementing construction process to see if they are abnormal, and if so, an alarm message is issued. In this way, the central control room can determine whether the cementing construction is abnormal according to the operating conditions of the automatic cementing head. In specific operations, the corresponding abnormal threshold can be set according to the parameter details of the normal working conditions.

[0069] In one embodiment, the cementing construction monitoring method further includes:

[0070] According to the preset instructions of the central control room system, the automatic control gate valve system and the data transceiver module of the automatic cement pump truck are controlled and monitored during the cementing and cementing construction process to see if they are abnormal. If so, an alarm message is issued. In this way, the central control room can determine whether the cementing construction is abnormal based on the operating conditions of the automatic cement pump truck. In specific operations, the corresponding abnormal threshold can be set according to the parameter details of the normal working conditions.

[0071] In one embodiment, the cementing construction monitoring method further includes:

[0072] According to the monitoring device, the working conditions of the equipment corresponding to the monitoring device during the cementing and cementing construction process are identified and monitored to determine whether the cementing construction is abnormal, and if so, an alarm message is issued. In this way, the central control room can determine whether the cementing construction is abnormal based on the working conditions of the equipment monitored by the detection device video. In specific operations, the corresponding abnormal threshold can be set according to the parameter details of the normal working conditions. The above-mentioned cementing and cementing construction monitoring method can automatically monitor the cementing and cementing construction conditions by respectively monitoring and obtaining the flow and density data of cement slurry and mud, and issue an alarm message when it is determined that the cementing and cementing construction is abnormal, thereby playing a certain early warning function and improving the reliability of the operation. In other embodiments, it is also possible to further determine whether the cementing and cementing construction conditions are abnormal based on the operating conditions of each equipment and the operating conditions detected by the video of each monitoring device, thereby playing a certain early warning function and improving the reliability of the operation.

[0073] It should be further explained that the existing construction monitoring and early warning technologies are mostly used in the fields of road and bridge construction, and do not have a guiding role in construction monitoring and early warning during cementing construction. At present, the field of automated cementing is in its infancy, and the existing technology has not yet reached the level of guiding automated cementing construction. In the process of automated cementing construction, due to the characteristics of the whole process using automated equipment for construction and the lack of construction personnel participation, the real-time monitoring and risk early warning system of cementing construction, one of the important processes in cementing construction, is crucial. This application is based on the basic equipment in the automated cementing system, and is intended to monitor the implementation process of cementing construction, reduce the safety hazards in cementing construction, and realize risk early warning and other functions. This application accurately and automatically monitors the density of cement slurry entering the well, the displacement of cement truck pumping, and the safe density window of underground mud in real time. In the process of automated cementing construction, due to the characteristics of the whole process using automated equipment for construction and the lack of construction personnel participation, the real-time monitoring and risk early warning system of cementing construction, one of the important processes in cementing construction, is crucial. This application realizes construction monitoring and risk prediction of automated cementing construction by monitoring the whole process parameters of cementing construction during cementing construction, thereby enhancing the safety of automated cementing construction.

[0074] The cementing construction monitoring system provided in this application is a cementing construction monitoring and early warning system based on automated cementing. Figure 3As shown, the overall layout of the cementing construction monitoring and early warning system based on automated cementing, the cementing construction monitoring system includes an automated cement ash tank 1 (with an automatic control gate valve system), an automated water tank 2 (with an automatic control gate valve system), an automated buffer tank 3 (with an automatic control gate valve system), a high-pressure flow density meter 4, an automated cement pump truck 5, an automated cement head 6, a high-pressure pipeline 7, an automated monitoring device 8, an automated central control room 9, a mud pool 10 and a drilling platform 11. Figure 3 The main components are connected to the automated central control room 9 through wireless transceivers to transmit the real-time data of cementing construction. The automated central control room 9 receives the construction information in real time and performs visual processing. At the same time, the automated central control room 9 can also remotely control each component. In addition, the automated cement ash tank 1 is connected to the automated buffer tank 3 through a high-pressure pipeline 7, and the automated water tank 2 is connected to the automated buffer tank 3 through a high-pressure pipeline 7. The automated buffer tank 3 is connected to two automated cement pump trucks 5 (only one automated cement pump truck 5 is involved in the construction, and the other is a spare truck to deal with emergencies) through a high-pressure pipeline 7, and a high-pressure flow density meter 4 is installed between the automated buffer tank 3 and the automated cement pump truck 5 to measure the real-time flow and density during the cementing construction process. The automated cement pump truck 5 is connected to the automated cement head 6 through a high-pressure pipeline 7, and a high-pressure flow density meter 4 is installed between the automated cement pump truck 5 and the automated cement head 6 to measure the real-time flow and density during the cementing construction process. The automated cement head 6 is connected to the mud pool 10 through a high-pressure pipeline 7, and a high-pressure flow density meter 4 is installed between the automated cement head 6 and the mud pool 10 to measure the real-time flow and density during the cementing construction process. Three high-pressure flow density meters 4 (4-1, 4-2, 4-3) respectively measure the liquid flow and density at the outlet of the automated buffer tank 3, the liquid flow and density at the inlet of the automated cement head 6, and the liquid flow and density at the inlet of the mud pool 10. The three-party measurement ensures the accuracy of the displacement and volume of the cement slurry entering the well.

[0075] Ten automated monitoring devices 8 are dispersedly arranged in the automated well site to monitor the operation of each device and the operation of the construction personnel in the well site during the construction process. Among them, six automated monitoring devices 8 are arranged around the automated cement ash tank 1, the automated water tank 2, the automated buffer tank 3, the high-pressure flow density meter 4 and the automated cement pump truck 5, so as to monitor the operation safety of the equipment and the construction personnel in the well site in real time without blind spots; two automated monitoring devices 8 are arranged on both sides of the automated cement head 6 of the drilling platform 11 to monitor the operation status and condition of the automated cement head 6 in real time during the cementing construction process; two automated monitoring devices 8 are arranged around the mud pool 10 to monitor the return slurry condition of the mud pool 10 in real time during the construction process.

[0076] The automated cement ash tank 1 has an automatic control gate valve system and a data transceiver module. The data transceiver module can send the cement ash remaining data in the tank to the automated central control room 9 in real time. The automated central control room 9 can also control the automatic control gate valve system of the automated cement ash tank 1 by means of command transmission, etc., so as to achieve the automatic ash supply and tank emptying functions of multiple automated cement ash tanks 1 during the cementing construction process.

[0077] The automated water tank 2 has an automatic control gate valve system and a data transceiver module. The data transceiver module can send the liquid remaining data in the tank to the automated central control room 9 in real time. The automated central control room 9 can also control the automatic control gate valve system of the automated water tank 2 by means of command transmission, etc., so as to achieve the automatic water supply and tank emptying functions of multiple automated water tanks 2 during cementing construction.

[0078] The automated buffer tank 3 has an automatic control gate valve system and a data transceiver module. The data transceiver module can send the liquid remaining data in the tank to the automated central control room 9 in real time. The automated central control room 9 can also control the automatic control gate valve system of the automated water tank 2 by means of command transmission, etc., so as to achieve the function of smooth supply of cement slurry during cementing construction.

[0079] The automated cement pump truck 5 has an automatic control gate valve system and a data transceiver module. The data transceiver module can send the liquid residual amount and density data in the vehicle to the automated central control room 9 in real time. The automated central control room 9 can also control the automatic control gate valve system of the automated cement pump truck 5 by means of command transmission, etc., so as to achieve the function of smooth supply of cement slurry during cementing construction.

[0080] The automated cement head 6 has an automatic control gate valve system and a data transceiver module. According to the real-time construction situation, it is linked with other equipment. The automated central control room 9 sends construction instructions to directly control the various valves of the cement head to achieve the automated slurry replacement function.

[0081] Figure 2 In the automatic monitoring device 8, the display panel 13 can display the warning information and the current construction status in real time. The warning light 14 sends a warning in real time when a problem occurs. The intelligent camera 15 can monitor the operation of the equipment, the on-site conditions and the operation of the construction personnel in the well site in real time during the cementing construction, and give a real-time warning of dangerous conditions. The data transceiver module 16 exchanges data with the automated central control room 9 in real time. If an abnormal condition is encountered during construction, the automated central control room 9 can perform overall construction scheduling based on the warning information sent by the data transceiver module 16.

[0082] Based on the above structure, the present application provides a cementing construction monitoring and early warning system based on automated cementing and its control method, which can realize automated control and safety monitoring and early warning functions of equipment, personnel and well sites throughout the cementing construction process. Figure 3This is the overall layout diagram of the cementing construction monitoring and early warning system based on automated cementing of this application. The main components of the specific embodiment of this application include an automated cement ash tank 1 (with an automatic control gate valve system), an automated water tank 2 (with an automatic control gate valve system), an automated buffer tank 3 (with an automatic control gate valve system), a high-pressure flow density meter 4, an automated cement pump truck 5, an automated cement head 6, a high-pressure pipeline 7, an automated monitoring device 8, an automated central control room 9, a mud pool 10 and a drilling platform 11. The above main components are connected to the automated central control room 9 through a wireless transceiver device to connect the real-time data of cementing construction to the automated central control room 9. The automated central control room 9 receives the construction information in real time and performs visual processing. At the same time, the automated central control room 9 can also remotely control each component. In addition, the automated cement ash tank 1 is connected to the automated buffer tank 3 through a high-pressure pipeline 7, and the automated water tank 2 is connected to the automated buffer tank 3 through a high-pressure pipeline 7. The automated buffer tank 3 is connected to two automated cement pump trucks 5 (only one automated cement pump truck 5 is involved in the construction, and the other is a spare truck to deal with emergencies) through a high-pressure pipeline 7, and a high-pressure flow density meter 4 is installed between the automated buffer tank 3 and the automated cement pump truck 5 to measure the real-time flow and density during the cementing construction process. The automated cement pump truck 5 is connected to the automated cement head 6 through a high-pressure pipeline 7, and a high-pressure flow density meter 4 is installed between the automated cement pump truck 5 and the automated cement head 6 to measure the real-time flow and density during the cementing construction process. The automated cement head 6 is connected to the mud pool 10 through a high-pressure pipeline 7, and a high-pressure flow density meter 4 is installed between the automated cement head 6 and the mud pool 10 to measure the real-time flow and density during the cementing construction process. The three high-pressure flow density meters 4 respectively measure the liquid flow and density at the outlet of the automated buffer tank 3, the liquid flow and density at the inlet of the automated cement head 6, and the liquid flow and density at the inlet of the mud pool 10. Three-party measurement is used to ensure the accuracy of the displacement and volume of cement slurry entering the well. Ten automated monitoring devices 8 are dispersedly arranged in the automated well site to monitor the operation of each device and the operation of the construction personnel in the well site during the construction process. Among them, six automated monitoring devices 8 are arranged around the automated cement ash tank 1, the automated water tank 2, the automated buffer tank 3, the high-pressure flow density meter 4 and the automated cement pump truck 5, so as to monitor the operation safety of the equipment and the construction personnel in the site in real time without blind spots; two automated monitoring devices 8 are arranged on both sides of the automated cement head 6 of the drilling platform 11 to monitor the operation status and situation of the automated cement head 6 in real time during the cementing construction process; two automated monitoring devices 8 are arranged around the mud pool 10 to monitor the return slurry situation of the mud pool 10 in real time during the construction process. The display panel 13 of the automated monitoring device 8 can display the warning information and the current construction conditions in real time. The warning light 14 sends a warning in real time when a problem is encountered.The intelligent camera 15 can monitor the equipment operation, on-site working conditions and the operation of construction personnel in the well site in real time during the cementing construction process, and give real-time warnings for dangerous conditions. The data transceiver module 16 exchanges data with the automation control room 9 in real time. If an abnormal condition is encountered during construction, the automation control room 9 can perform overall construction scheduling based on the warning information sent by the data transceiver module 16.

[0083] The cementing construction monitoring system and monitoring method of the present application will be further described below in conjunction with the following embodiments.

[0084] Example

[0085] When using the automated cementing construction monitoring and early warning system, multiple automated cement ash tanks 1 are used to store cement ash used in cementing construction, and multiple automated water tanks 2 are used to store liquid reagents used in cementing construction. Figure 3 The schematic diagram shown is used to install and place various instruments and equipment.

[0086] The cementing engineer conducts remote monitoring of the equipment in the automated central control room 9, and the on-site automated equipment performs construction operations according to preset instructions. The drilling engineer and on-site construction personnel are on standby in the automated central control room 9 to deal with emergencies during construction.

[0087] During the automated cementing construction process, after receiving the instruction to start the construction, the single automated cement ash tank 1 and the single automated water tank 2 open the automatic control gate valve to supply ash and water, and mix the cement ash and liquid reagents in the water tank in the automated buffer tank 3. When the cement ash residue or liquid residue in the automated cement ash tank 1 or the automated water tank 2 is too low, the automatic gate valve system of the current automated cement ash tank 1 or the automated water tank 2 is slowly closed, and the automatic gate valve system of the other automated cement ash tank 1 and the automated water tank 2 filled with cement ash or liquid is slowly opened. When the cement ash or liquid in the automated cement ash tank 1 or the automated water tank 2 is exhausted, the current automatic gate valve system is completely closed, and the automatic gate valve system of the other automated cement ash tank 1 or the automated water tank 2 is fully opened to achieve the function of automatic tank emptying.

[0088] The cement ash and liquid reagent are mixed in the automated buffer tank 3 and enter the automated cement pump truck 5 through the high-pressure flow density meter 4. The high-pressure flow density meter 4 will monitor and record the displacement and density of the cement slurry, and send the data information to the automated central control room 9 through the data transceiver module. When the density of the cement slurry exceeds a certain range from the set density, the automated central control room 9 will send a command to control and adjust the density of the cement slurry by adjusting the displacement of the automated cement ash tank 1 or the automated water tank 2.

[0089] When the cement slurry density is adjusted, the automated cement pump truck 5 pumps the cement slurry into the automated cement head 6, and performs a second displacement and density monitoring and recording through the high-pressure flow density meter 4 between the automated cement pump truck 5 and the automated cement head 6. The high-pressure flow density meter 4 here is mainly for displacement monitoring, and if the density error is within a certain range, no density adjustment instruction will be sent.

[0090] The cement slurry enters the well through the automated cement head 6, which performs a series of operations such as releasing the upper rubber plug, throwing the ball, and releasing the lower rubber plug according to the set instructions. The returned mud enters the mud pool 10 through the high-pressure flow density meter 4, which mainly measures the displacement of the returned mud, measures the displacement for the third time, and transmits the displacement data to the automated central control room 9 through the data transmission module. The displacement information measured by the high-pressure flow density meter 4 of the automated cement pump truck 5, the high-pressure flow density meter 4 in front of the automated cement head 6, and the high-pressure flow density meter 4 in front of the mud pool 10 is measured and compared in three ways, and the formulas and instructions set by the automated central control room 9 are used to determine whether there is leakage and other phenomena in this cementing.

[0091] During the entire cementing construction process, multiple automated monitoring devices 8 distributed at various locations in the well site conduct real-time safety monitoring of the equipment and construction personnel in the well site. When encountering problems such as improper operation or improper equipment operation, early warning information is sent to the automated central control room 9 in a timely manner. If the automated central control room 9 is unable to handle the current abnormality, it will be switched to manual control mode in a timely manner. At this time, the equipment in the well site can be taken over by the cementing engineer in the automated central control room 9. The cementing construction operators on standby in the automated central control room 9 can enter the well site to take over the operation of various equipment to achieve safe and smooth cementing construction.

[0092] During the cementing construction process, the startup, operation status and shutdown of all equipment are controlled by preset instructions in the automation central control room 9. If an abnormal situation occurs, the automation central control room 9 can also eliminate the abnormal situation according to the set instructions.

[0093] The above-mentioned cementing construction monitoring system is equipped with a central control room and at least two flow density meters, one of which is arranged on the connecting passage between the buffer tank and the cement head, and the other is arranged on the connecting passage between the mud pool and the cement head. In this way, the flow and density data of cement slurry and mud can be monitored in time through the flow density meter, thereby facilitating automatic monitoring of the cementing construction status.

[0094] It should be noted that the automated cement ash tank 1 (with an automatic control gate valve system), automated water tank 2 (with an automatic control gate valve system), automated buffer tank 3 (with an automatic control gate valve system), automated cement pump truck 5, automated cement head 6, high-pressure pipeline 7, mud pool 10 and drilling platform 11 in some embodiments of the present application can all be implemented with reference to the corresponding equipment of the existing automated cementing construction, and the controller and data transceiver module of each device therein can establish communication and data connection communication that can be controlled by the central control room. The intelligent camera, display panel and warning light of the monitoring device of the present application can also be implemented with reference to the existing technology.

[0095] The technical features of the above-described embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. It should be noted that "in one embodiment", "for example", "for example", etc. in this application are intended to illustrate the present application, rather than to limit the present application. The above-described embodiments only express several implementation methods of the present application, and the description is relatively specific and detailed, but it cannot be understood as a limitation on the scope of the patent application. It should be pointed out that for a person of ordinary skill in the art, without departing from the concept of the present application, several variations and improvements can also be made, which all belong to the scope of protection of the present application. Therefore, the scope of protection of the patent in this application shall be subject to the attached claims.

Claims

1. A cementing construction monitoring system, characterized in that: Applied in a cementing and cementing construction system, the cementing and cementing construction system includes a buffer tank, a cement head and a mud pool, the buffer tank and the mud pool are respectively connected to the cement head, the cement head is used to perform cementing construction on the cement slurry in the buffer tank and to inject the mud displaced during cementing construction into the mud pool, the cementing and cementing construction monitoring system includes a central control room and at least two flow density meters, one of the flow density meters is arranged on the connecting passage between the buffer tank and the cement head, the other flow density meter is arranged on the connecting passage between the mud pool and the cement head, at least two of the flow density meters are communicatively connected to the central control room, and the central control room is used to obtain corresponding flow and density data through at least two flow density meters.

2. The cementing construction monitoring system according to claim 1 is characterized in that: The cementing construction monitoring system also includes multiple monitoring devices, at least one of which is arranged near at least one of the buffer tank, the cement head and the mud pool, and is used for video monitoring of the corresponding equipment. The multiple monitoring devices are all communicatively connected to the central control room.

3. The cementing construction monitoring system according to claim 2 is characterized in that: The monitoring device includes a pole and a display panel, a warning light, a smart camera, a data transceiver module and a controller respectively installed on the pole. The display panel, the warning light, the smart camera and the data transceiver module are all electrically connected to the controller, and the data transceiver module is used to communicate with the central control room.

4. The cementing construction monitoring system according to claim 3 is characterized in that: The cementing construction monitoring system integrates cementing construction functions and monitoring, and the cementing construction monitoring system includes the buffer tank, the cement head and the mud pool; And / or, the cementing construction monitoring system further includes a cement ash tank and a water tank, and the cement ash tank and the water tank are respectively connected to the buffer tank.

5. The cementing construction monitoring system according to claim 4 is characterized in that: The cementing construction monitoring system also includes an automated cement pump truck, the buffer tank is connected to the cement head via the automated cement pump truck, and at least one of the two flow density meters is arranged on the connecting passage between the automated cement pump truck and the cement head.

6. The cementing construction monitoring system according to claim 5, characterized in that: The number of the flow density meters is at least three, and the third of the at least three flow density meters is arranged on the communication passage between the buffer tank and the automated cement pump truck.

7. The cementing construction monitoring system according to claim 6, characterized in that: The cementing construction monitoring system further comprises a drilling platform, wherein the cement head is located in the drilling platform; The cementing construction monitoring system further includes at least one of the following technical features: a. The cement ash tank is an automated cement ash tank, which has an automatic control gate valve system and a data transceiver module, the data transceiver module is used to send the cement ash remaining data in the cement ash tank to the central control room in real time, and the central control room is used to control the automatic control gate valve system to control the automatic ash supply and emptying of the automated cement ash tank; b. The water tank is an automatic water tank, which has an automatic control gate valve system and a data transceiver module. The data transceiver module is used to send the liquid remaining data in the automatic water tank to the central control room in real time. The central control room is used to control the automatic control gate valve system of the automatic water tank to control the automatic water supply and emptying of the automatic water tank; c. The buffer tank is an automatic buffer tank, and the automatic buffer tank has an automatic control gate valve system and a data transceiver module, and the data transceiver module is used to send the liquid remaining data in the automatic buffer tank to the central control room in real time, and the central control room is used to control the automatic control gate valve system of the automatic water tank to control whether the cement slurry flows out; d. The cement pump truck is an automated cement pump truck, which has an automatic control gate valve system and a data transceiver module, and the data transceiver module is used to send the liquid residual volume and density data in the automated cement pump truck to the central control room in real time, and the central control room is used to control the automatic control gate valve system of the automated cement pump truck to control whether the cement slurry flows out; e. The cement head is an automated cement head, which has an automatic control gate valve system and a data transceiver module, wherein the data transceiver module is used to send data of the automated cement head to the central control room, and the central control room is used to control the automatic control gate valve system of the automated cement head to control automated slurry replacement; f. The corresponding communication passages between the cement ash tank, the buffer tank, the cement pump truck, the cement head and the mud pool are connected through high-pressure pipelines.

8. The cementing construction monitoring system according to claim 7, characterized in that: The number of the monitoring devices is at least 10, wherein, among the 10 monitoring devices, 6 of the automated monitoring devices are arranged around the automated cement ash tank, the automated water tank, the automated buffer tank, the high-pressure flow density meter and the automated cement pump truck; 2 of the automated monitoring devices are arranged on both sides of the automated cement head of the drilling platform, and 2 of the automated monitoring devices are arranged around the mud pool.

9. A method for monitoring cementing construction, characterized in that: The steps include: Monitor and obtain cement slurry flow and density data; Monitor and obtain the flow and density data of mud discharge; According to the flow rate and density data of the cement slurry and the flow rate and density data of the mud discharge, it is judged whether the cement injection construction is abnormal, and an alarm message is issued if it is abnormal.

10. The method for monitoring cementing construction according to claim 9, characterized in that: The cementing construction monitoring method is applied to the cementing construction monitoring system as described in any one of claims 1 to 8 of the present invention, wherein the cementing construction monitoring system comprises a central control room, multiple flow density meters, an automated buffer tank, a cement head, a mud pool, multiple monitoring devices, an automated cement ash tank, an automated water tank, and an automated cement pump truck, and the cementing construction monitoring method further comprises at least one of the following steps: According to the preset instructions of the central control room, control and monitor whether the automatic control gate valve system and the data transceiver module of the automatic cement ash tank, the automatic water tank, and the automatic buffer tank are abnormal during the cementing construction process, and issue an alarm message if so; According to the preset instructions of the central control room, control and monitor whether the automatic control gate valve system and the data transceiver module of the automatic cement head are abnormal during the cementing construction process, and issue an alarm message if so; According to the preset instructions of the central control room system, control and monitor whether the automatic control gate valve system and the data transceiver module of the automatic cement pump truck are abnormal during the cementing construction process, and issue an alarm message if so; According to the monitoring device, the working conditions of the equipment corresponding to the monitoring device during the cementing construction process are identified and monitored to determine whether the cementing construction is abnormal, and if so, an alarm message is issued.

Images