Drilling mud overflow early warning monitoring device

Abstract

The application discloses a drilling mud overflow early warning monitoring device, a shell is provided with an inner cavity, a mud inlet and a mud outlet communicated with the inner cavity, the mud inlet and the mud outlet are respectively arranged on the two opposite ends of the shell; the inner cavity comprises a first detection zone, a second detection zone and a third detection zone communicated in turn in the flowing direction of the drilling mud, the mud inlet is arranged on the inner wall of the first detection zone, and the mud outlet is arranged on the inner wall of the third detection zone; a first mud parameter detection device is arranged in the first detection zone and is used for detecting the drilling mud flowing through the first detection zone to obtain a first group of mud parameters; a second mud parameter detection device is arranged in the second detection zone and is used for detecting the drilling mud flowing from the first detection zone into the second detection zone to obtain a second group of mud parameters; and a third mud parameter detection device is arranged in the third detection zone and is used for detecting the drilling mud flowing from the second detection zone into the third detection zone to obtain a third group of mud parameters.

Description

Technical Field

[0001] This invention relates to the field of drilling auxiliary equipment design technology, and in particular to a drilling mud overflow early warning and monitoring device. Background Technology

[0002] Drilling operations require the backflow of drilling mud. During this process, drilling mud is prone to overflow, which can disrupt the backflow operation. Therefore, relevant technologies incorporate sensors that monitor various parameters of the drilling mud to provide early warning of overflows. To obtain these parameters, the sensors are directly installed in the mud pipelines that transport the drilling mud.

[0003] However, the flow field of drilling mud is complex and variable, and the flow environment is harsh. This can cause the sensors in the mud pipeline to be easily affected by the complex local flow field, resulting in large errors in parameter monitoring and ultimately poor early warning of drilling mud overflow.

[0004] Meanwhile, drilling mud contains a large amount of sediment. During the flow of drilling mud, sediment easily accumulates in the mud pipe or adheres to the pipe wall, which can lead to greater errors in the sensor's monitoring of some drilling mud parameters (such as flow rate). Moreover, the sensor's monitoring data fluctuates significantly whether the mud pipe is full or not, ultimately causing the monitoring errors of some drilling mud parameters to continue to increase.

[0005] This indicates that the relevant technology has a problem with large errors in the detection of drilling mud parameters, which ultimately leads to poor early warning effect for drilling mud overflow. Summary of the Invention

[0006] This invention discloses a drilling mud overflow early warning and monitoring device to solve the problem of large monitoring errors in related technologies involving mud overflow early warning.

[0007] To address the aforementioned technical problems, the present invention discloses the following technical solutions:

[0008] A drilling mud overflow early warning and monitoring device includes a shell, a first mud parameter detection device, a second mud parameter detection device, and a third mud parameter detection device, wherein:

[0009] The shell has an inner cavity and a mud inlet and a mud outlet communicating with the inner cavity. The mud inlet and the mud outlet are respectively opened at opposite ends of the shell.

[0010] The inner cavity includes a first detection zone, a second detection zone, and a third detection zone that are sequentially connected in the direction of drilling mud flow. The mud inlet is located on the inner wall of the first detection zone, and the mud outlet is located on the inner wall of the third detection zone.

[0011] The first mud parameter detection device is located in the first detection area and is used to detect the drilling mud flowing through the first detection area to obtain a first set of mud parameters; the second mud parameter detection device is located in the second detection area and is used to detect the drilling mud flowing from the first detection area into the second detection area to obtain a second set of mud parameters; the third mud parameter detection device is located in the third detection area and is used to detect the drilling mud flowing from the second detection area into the third detection area to obtain a third set of mud parameters.

[0012] Optionally, it also includes a first Parshall flume open channel structure, which is disposed in the inner cavity. The space on the first side of the first Parshall flume open channel structure within the inner cavity is the first detection area; the space on the second side of the first Parshall flume open channel structure within the inner cavity is the second detection area. The first side and the second side are opposite sides of the Parshall flume open channel structure. The second mud parameter detection device is disposed on the first Parshall flume open channel structure to detect the drilling mud flowing into the first Parshall flume open channel structure to obtain the second set of mud parameters.

[0013] Optionally, the first Parshall flume open channel structure includes a funnel-shaped inlet section, an intermediate stabilizing section, and a funnel-shaped outlet section connected in sequence. The large end of the funnel-shaped inlet section is connected to the first detection zone, the small end of the funnel-shaped inlet section is connected to one end of the intermediate stabilizing section, the other end of the intermediate stabilizing section is connected to the small end of the funnel-shaped outlet section, and the large end of the funnel-shaped outlet section is connected to the third detection zone. The second mud parameter detection device is used to detect the drilling mud flowing through the intermediate stabilizing section to obtain the second set of mud parameters.

[0014] Optionally, the first Parshall flume open channel structure further includes a rectifier plate, which is disposed in the funnel-shaped inlet section, and the rectifier plate is uniformly provided with a plurality of rectifier holes.

[0015] Optionally, it also includes a degassing device, which is located in the third detection zone and is used to degas the drilling mud flowing into the third detection zone.

[0016] Optionally, it also includes a mounting bracket, which is disposed on the third detection area, and the degassing device and the third mud parameter detection device are disposed on the mounting bracket.

[0017] Optionally, it also includes a sediment detection device, which includes a sediment detection chamber, an inlet valve, a discharge valve, a filter element, and a sediment quantity detector. The sediment detection chamber is fixedly connected to the housing and is provided with an inlet and a discharge outlet.

[0018] The inlet valve is located at the inlet to control the connection between the inlet and the third detection zone; the sand discharge valve is located at the sand discharge outlet to control the connection between the sand discharge outlet and the sand discharge outlet; the filter element is inclinedly disposed within the mud and sand detection chamber, dividing the mud and sand detection chamber into a clear liquid space and a mud and sand space; the mud and sand quantity detector is located within the mud and sand detection chamber and adjacent to the lower end of the filter element to receive the mud and sand sliding down the inclined surface of the filter element; the clear liquid space is connected to the detection zone through a return pipe to discharge the drilling mud filtered by the filter element to the third detection zone.

[0019] Optionally, if the amount of sediment is less than a preset threshold, the liquid inlet valve is opened and the sediment discharge valve is closed.

[0020] If the amount of sediment is greater than or equal to the preset threshold, the liquid inlet valve is closed and the sediment discharge valve is opened.

[0021] Optionally, the system also includes a sampling device located outside the housing. The first end of the sampling device is connected to the mud inlet, and the second end of the sampling device is connected to the third detection zone. The sampling device is used to sample and measure the drilling mud to obtain at least the sampling flow rate.

[0022] Optionally, the sampling device includes a first detection tube, a second detection tube, a third detection tube, and a sampling flow detector. The first detection tube is connected to the mud inlet. One end of the third detection tube is connected to the first detection tube through the second detection tube, and the other end of the third detection tube is connected to the third detection zone. The first detection tube is equipped with a first pressure sensor, and the third detection tube is equipped with a second pressure sensor. The second detection tube has a second Parshall flume open channel structure inside. The sampling flow detector is used to detect the level of drilling mud flowing through the second Parshall flume open channel structure to obtain the sampling flow rate.

[0023] The technical solutions disclosed in the embodiments of the present invention have the following technical effects:

[0024] This invention provides a drilling mud overflow early warning and monitoring device, which is connected between the pipelines transporting drilling mud (i.e., the first and second pipelines mentioned above). During the flow of drilling mud, the device can detect the drilling mud in the first, second, and third detection zones within the casing through a first mud parameter detection device, a second mud parameter detection device, and a third mud parameter detection device, respectively. This is a redundant detection design, which can obtain a first set of mud parameters, a second set of mud parameters, and a third set of mud parameters. Since the first set of mud parameters, the second set of mud parameters, and the third set of mud parameters can all serve as early warning criteria for whether drilling mud overflows, overflow early warning can be comprehensively performed by using the redundant detection results of the first set of mud parameters, the second set of mud parameters, and the third set of mud parameters. Compared to related technologies that simply place sensors directly inside the pipeline transporting drilling mud, this redundant design allows the first, second, and third mud parameter detection devices to acquire mud parameters from different areas within the casing. By performing redundant early warning analysis using multiple sets of mud parameters, the accuracy of overflow early warning can be improved.

[0025] Compared to related technologies where sensors are placed at a single location and are easily affected by the complex and variable drilling mud and harsh detection environment, the drilling mud overflow early warning and monitoring device disclosed in this invention can overcome the interference of local complex flow fields by detecting mud parameters at multiple locations, which is beneficial to improving the accuracy of mud parameter detection. Attached Figure Description

[0026] Figures 1 to 3 These are schematic diagrams of the drilling mud overflow early warning and monitoring equipment disclosed in the embodiments of the present invention from different perspectives;

[0027] Figure 4 This is a sectional view of the first Parshall flume open channel structure;

[0028] Figure 5 This is a cross-sectional view of a portion of the structure of the drilling mud overflow early warning and monitoring device disclosed in an embodiment of the present invention;

[0029] Figure 6 and Figure 7 These are cross-sectional views of the sampling device disclosed in the embodiments of the present invention from different perspectives.

[0030] The components in the diagram are labeled as follows:

[0031] 10-Shell, 12-Mud Inlet, 13-Mud Outlet, 14-Overflow Prevention Port, 15-Display Equipment, 101-First Detection Zone, 102-Second Detection Zone, 103-Third Detection Zone

[0032] 21-First mud parameter detection device, 22-Second mud parameter detection device, 23-Third mud parameter detection device,

[0033] 30-First Parshall flume open channel structure, 31-Funnel-shaped inlet, 32-Intermediate steady section, 33-Funnel-shaped outlet, 34-Straightening plate, 341-Straightening orifice,

[0034] 41-Degassing device, 42-Mounting bracket,

[0035] 50-Sediment detection device, 51-Sediment detection chamber, 511-Liquid inlet, 512-Sediment outlet, 501-Clear liquid space, 502-Sediment space, 52-Liquid inlet valve, 53-Sediment outlet valve, 54-Filter element, 55-Sediment quantity detector.

[0036] 61-First detection tube, 611-First pressure sensor, 62-Second detection tube, 621-Second Parshall flume open channel structure, 63-Third detection tube, 631-Second pressure sensor, 64-Sampling flow detector. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0038] The technical solutions disclosed in the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0039] Please refer to Figures 1 to 7 This invention discloses a drilling mud overflow early warning and monitoring device. The disclosed drilling mud overflow early warning and monitoring device can detect the mud parameters of drilling mud, thereby achieving the monitoring purpose. The mud parameters obtained by the drilling mud overflow early warning and monitoring device disclosed in this invention can be used as a basis for early warning of overflow. It should be noted that the principle and process of overflow early warning based on mud parameters are well-known technologies and are not the inventive point of this invention; therefore, they will not be described further here.

[0040] The drilling mud overflow early warning and monitoring device disclosed in this embodiment of the invention includes a housing 10, a first mud parameter detection device 21, a second mud parameter detection device 22, and a third mud parameter detection device 23.

[0041] The housing 10 is the outer shell of the drilling mud overflow early warning and monitoring equipment. Other components of the drilling mud overflow early warning and monitoring equipment are directly or indirectly installed on the housing 10. The housing 10 can be a box or a tank, and the specific structure of the housing 10 is not limited in this embodiment of the invention.

[0042] In this embodiment of the invention, the housing 10 has an inner cavity, a mud inlet 12, and a mud outlet 13. The mud inlet 12 is an opening for drilling mud to flow into the inner cavity, and the mud outlet 13 is an opening for drilling mud to flow out of the inner cavity. The mud inlet 12 and the mud outlet 13 are respectively located at opposite ends of the housing 10. In specific operation, the mud inlet 12 is connected to a first pipe for conveying drilling mud, and the mud outlet 13 is connected to a second pipe for conveying drilling mud. The first pipe conveys drilling mud into the inner cavity through the mud inlet 12, and the drilling mud flowing through the inner cavity flows into the second pipe from the mud outlet 13 and is discharged by the second pipe.

[0043] As the drilling mud flows through the inner cavity, it is detected by the first mud parameter detection device 21, the second mud parameter detection device 22, and the third mud parameter detection device 23.

[0044] The inner cavity includes a first detection zone 101, a second detection zone 102, and a third detection zone 103 that are sequentially connected in the direction of drilling mud flow. A mud inlet 12 is located on the inner wall of the first detection zone 101, and a mud outlet 13 is located on the inner wall of the third detection zone 103. After entering the inner cavity from the mud inlet 12, the drilling mud first enters the first detection zone 101, then flows from the first detection zone 101 into the second detection zone 102, then from the second detection zone 102 into the third detection zone 103, and finally flows out of the casing 10 from the third detection zone 103 through the mud outlet 13.

[0045] In this embodiment of the invention, a first mud parameter detection device 21 is disposed in a first detection zone 101 and is used to detect the drilling mud flowing through the first detection zone 101 to obtain a first set of mud parameters. A second mud parameter detection device 22 is disposed in a second detection zone 102 and is used to detect the drilling mud flowing from the first detection zone 101 into the second detection zone 102 to obtain a second set of mud parameters. A third mud parameter detection device 23 is disposed in a third detection zone 103 and is used to detect the drilling mud flowing from the second detection zone 102 into the third detection zone 103 to obtain a third set of mud parameters.

[0046] The first, second, and third groups of drilling mud parameters contain the same types of parameters, and this embodiment of the invention does not limit the number of parameters included in the first, second, and third groups of drilling mud parameters. The first, second, and third groups of drilling mud parameters may include drilling mud flow rate, temperature, conductivity, liquid level, etc.

[0047] In this embodiment of the invention, the first set of mud parameters, the second set of mud parameters, and the third set of mud parameters can all serve as early warning criteria for whether drilling mud overflows. The process and principle of overflow early warning based on the first set of mud parameters, the second set of mud parameters, and the third set of mud parameters are well-known and are not the inventive point of this invention, so they will not be described in detail here.

[0048] This invention provides a drilling mud overflow early warning and monitoring device, which is connected between the pipelines transporting drilling mud (i.e., the first and second pipelines mentioned above). During the flow of drilling mud, the first mud parameter detection device 21, the second mud parameter detection device 22, and the third mud parameter detection device 23 can respectively detect the drilling mud in the first detection zone 101, the second detection zone 102, and the third detection zone 103 within the housing 10. This is a redundant detection design, which can obtain a first set of mud parameters, a second set of mud parameters, and a third set of mud parameters. Since the first set of mud parameters, the second set of mud parameters, and the third set of mud parameters can all serve as early warning criteria for whether drilling mud overflows, overflow early warning can be comprehensively performed by using the redundant detection results of the first set of mud parameters, the second set of mud parameters, and the third set of mud parameters. Compared to related technologies that simply place sensors directly inside the pipeline that transports drilling mud, this redundant design allows the first mud parameter detection device 21, the second mud parameter detection device 22, and the third mud parameter detection device 23 to obtain mud parameters from different areas within the housing 10. By performing redundant early warning analysis using multiple sets of mud parameters, the accuracy of overflow early warning can be improved.

[0049] Compared to single-location sensors in related technologies, which are easily affected by the complex and variable drilling mud and harsh detection environment, the drilling mud overflow early warning and monitoring device disclosed in this invention can overcome the interference of local complex flow fields by detecting mud parameters at multiple locations, which is beneficial to improving the accuracy of mud parameter detection.

[0050] Specifically, in related technologies, sensors installed in pipelines transporting drilling mud are easily affected by their local environment, resulting in significant errors in the mud data they detect. However, the drilling mud overflow early warning monitoring system disclosed in this invention uses a first mud parameter detection device 21, a second mud parameter detection device 22, and a third mud parameter detection device 23 to detect mud parameters at different locations. Since the probability of local anomalies occurring at multiple locations is low, it is easier to obtain at least relatively accurate mud parameters, thus facilitating more accurate overflow early warning. In the specific monitoring process, an early warning result indicating drilling mud overflow can only be obtained if at least two of the first, second, and third mud parameters are abnormal.

[0051] It should be noted that the first mud parameter detection device 21, the second mud parameter detection device 22, and the third mud parameter detection device 23 can all be detection modules integrating multiple sensors. The number of sensors integrated into the detection module generally depends on the number of mud parameters to be detected. For example, if the first set of mud parameters, the second set of mud parameters, and the third set of mud parameters all include temperature and conductivity, then the first set of mud parameter detection devices 21, the second set of mud parameter detection devices 22, and the third set of mud parameter detection devices 23 can all be detection modules integrating temperature sensors and conductivity sensors. Since this embodiment does not limit the types and number of parameters included in the first set of mud parameters, the second set of mud parameters, and the third set of mud parameters, this embodiment also does not limit the types and number of sensors included in the first set of mud parameter detection devices 21, the second set of mud parameter detection devices 22, and the third set of mud parameter detection devices 23.

[0052] As described in the background art, during the flow of drilling mud, the mud and sand in the drilling mud are more likely to adhere to the pipe wall of the mud pipe, or the mud pipe may be in a full or partially full state, which can easily lead to larger errors in flow rate detection. Based on this, in one embodiment, the drilling mud overflow early warning monitoring device disclosed in this invention may further include a first Parshall flume open channel structure 30. The first Parshall flume open channel structure 30 is disposed in an inner cavity. The space located on the first side of the first Parshall flume open channel structure 30 within the inner cavity is a first detection area 101. The space located on the second side of the first Parshall flume open channel structure 30 within the inner cavity is a second detection area 102. The first side and the second side are respectively two opposite sides of the first Parshall flume open channel structure 30.

[0053] The second mud parameter detection device 22 is installed on the first Parshall flume open channel structure 30 to detect the drilling mud flowing into the first Parshall flume open channel structure 30 and obtain a second set of mud parameters. The liquid level in the first Parshall flume open channel structure 30 and the flow rate through the first Parshall flume open channel structure 30 form a functional mapping. That is, as long as the liquid level of the drilling mud in the Parshall flume open channel structure 30 is detected, the accurate flow rate of the drilling mud flowing through the first Parshall flume open channel structure 30 can be obtained. This is a characteristic of the Parshall flume open channel structure and is also a known technology. Compared to the uncertainty of the flow area in mud pipes caused by sediment deposition on the pipe walls, and the uncertainty of the flow area when the mud pipe is full or not, the design of the first Parshall flume open channel structure 30 can overcome the problems of inaccurate flow measurement caused by sediment deposition on the pipe walls and the full or not full state of the mud pipe. It only needs to detect the level of drilling mud flowing through the first Parshall flume open channel structure 30, and the level of drilling mud flowing through the first Parshall flume open channel structure 30 is not affected by sediment deposition or the full or not full state. Therefore, the design of the first Parshall flume open channel structure 30 allows the first mud parameter detection device 22 to obtain accurate flow rate by only detecting the level of drilling mud flowing through the first Parshall flume open channel structure 30. Therefore, the second mud parameter detection device 22 can at least improve the detection accuracy of drilling mud flow rate, which is beneficial to improving the accuracy of subsequent overflow warning.

[0054] Meanwhile, when the second mud parameters include flow rate and level, the second mud parameter detection device 22 only needs to be configured to detect the level of drilling mud flowing through the first Parshall flume open channel structure 30 to obtain the level and flow rate. This eliminates the need for a flow sensor in the second mud parameter detection device 22, which simplifies the structure of the second mud parameter detection device 22.

[0055] In this embodiment of the invention, the first Parshall flume open channel structure 30 may include a funnel-shaped inlet section 31, an intermediate stabilizing section 32, and a funnel-shaped outlet section 33 connected in sequence. The large end of the funnel-shaped inlet section 31 is connected to the first detection zone 101, the small end of the funnel-shaped inlet section 31 is connected to one end of the intermediate stabilizing section 32, the other end of the intermediate stabilizing section 32 is connected to the small end of the funnel-shaped outlet section 33, and the large end of the funnel-shaped outlet section 33 is connected to the third detection zone 103. The second mud parameter detection device 22 is used to detect the drilling mud flowing through the intermediate stabilizing section 32 to obtain a second set of mud parameters.

[0056] To improve the smoothness of drilling mud flow, in other embodiments, the first Parshall flume open channel structure 30 may further include a flow straightener 34. The flow straightener 34 may be disposed in the funnel-shaped inlet section 31, and the flow straightener 34 has a plurality of flow straightening holes 341 evenly distributed. In this case, after the drilling mud flows into the funnel-shaped inlet section 31, it passes through the flow straightener 34. Under the diversion and equalization effect of the plurality of flow straightening holes 341, the drilling mud can be dispersed, thereby making the flow field of the drilling mud more uniform and achieving the purpose of making the drilling mud flow more stable.

[0057] The drilling mud overflow early warning and monitoring equipment disclosed in this embodiment of the invention may further include a degassing device 41, which is located in the third detection zone 103. The degassing device 41 is used to degas the drilling mud flowing into the third detection zone 103. The degassing device 41 may be a vibration device, which causes the gas dissolved in the drilling mud to be released by vibration, thereby reducing the amount of air mixed in the drilling mud.

[0058] The drilling mud overflow early warning and monitoring device disclosed in this embodiment of the invention may further include a mounting bracket 42, which is fixed to the housing 10 and disposed in the third detection zone 103. Both the degassing device 41 and the third mud parameter detection device 23 can be mounted on the mounting bracket 42 for installation. In this embodiment, the degassing device 41 and the third mud parameter detection device 23 share the mounting bracket 42 for installation, eliminating the need for separate mounting brackets for each, which simplifies the structure of the drilling mud overflow early warning and monitoring device.

[0059] In this embodiment of the invention, the housing 10 may have an overflow port 14, which is located at a high position on the housing 10, for example, at the top of the housing 10. During monitoring, if a sudden situation occurs causing excessive drilling mud flow, resulting in drilling mud exceeding the warning level within the housing 10, the excess drilling mud will flow away through the overflow port 14, preventing it from overflowing from other parts of the housing 10. If the housing 10 is a tank, the overflow port 14 can prevent excessive drilling mud from overflowing from the tank opening. The overflow port 14 can be connected to an overflow pipe to promptly drain excess drilling mud. To facilitate timely viewing of the test results by operators, a display device 15 may be installed on the housing 10. The display device 15 can be connected to the first mud parameter detection device 21, the second mud parameter detection device 22, and the third mud parameter detection device 23, so as to display the first set of mud parameters, the second set of mud parameters, and the third set of mud parameters on the display device 15 for operators to view at any time.

[0060] Drilling mud contains a large amount of mud and sand. In order to detect the mud and sand deposition during the flow of drilling mud, the drilling mud overflow early warning monitoring device disclosed in this embodiment of the invention may further include a mud and sand detection device 50. The mud and sand detection device 50 may include a mud and sand detection chamber 51, a liquid inlet valve 52, a sand discharge valve 53, a filter element 54, and a mud and sand quantity detector 55.

[0061] The sediment detection chamber 51 is fixedly connected to the housing 10. Specifically, the sediment detection chamber 51 can be welded, bonded, or connected to the housing 10 via connectors, etc. This embodiment of the invention does not limit the specific connection method between the sediment detection chamber 51 and the housing 10. The sediment detection chamber 51 is provided with a liquid inlet 511 and a sand discharge outlet 512. The liquid inlet 511 is used to communicate with the third detection zone 103. The sand discharge outlet 512 is used to discharge the sediment deposited in the sediment detection chamber 51.

[0062] A fluid inlet valve 52 is located at the fluid inlet 511 to control the connection between the fluid inlet 511 and the third detection zone 103. When the fluid inlet valve 52 is open, the fluid inlet 511 is open, and drilling mud in the third detection zone 103 enters the mud and sand detection chamber 51 through the fluid inlet 511. When the fluid inlet valve 52 is closed, the fluid inlet 511 is closed, and drilling mud in the third detection zone 103 cannot enter the mud and sand detection chamber 51 through the fluid inlet 511.

[0063] A sand discharge valve 53 is located at the sand discharge port 512 to control the opening and closing of the sand discharge port 512. When the sand discharge valve 53 is in the open state, the sand discharge port 512 is open, and the sediment deposited in the sediment detection chamber 51 can be discharged through the sand discharge port 512. When the sand discharge valve 53 is in the closed state, the sand discharge port 512 is closed, and the sediment deposited in the sediment detection chamber 51 cannot be discharged through the sand discharge port 512.

[0064] The filter element 54 is inclinedly disposed within the mud and sand detection chamber 51, dividing the chamber into a clear fluid space 501 and a mud and sand space 502. A mud and sand quantity detector 55 is disposed within the mud and sand detection chamber 51, adjacent to the lower end of the filter element 54, to collect mud and sand sliding down the inclined surface of the filter element 54. The clear fluid space 501 is connected to the third detection zone 103 via a return pipe, allowing the drilling mud filtered by the filter element 54 to be discharged into the third detection zone 103. Specifically, the return pipe may be equipped with a one-way valve, thus allowing only the clear fluid in the clear fluid space 501 to flow back into the third detection zone 103, while preventing the drilling mud in the third detection zone 103 from directly flowing into the clear fluid space 501 through the return pipe.

[0065] In the specific sediment detection process, the inlet valve 52 is opened, and part of the drilling mud in the third detection zone 103 enters the sediment detection chamber 51 through the inlet 511. Under the action of gravity, the sediment falls onto the inclined filter element 54 and is filtered by the filter element 54. The sediment blocked on the filter element 54 slides down the filter element 54 to the lower end under the action of gravity and falls onto the sediment quantity detector 55. The sediment quantity detector 55 can measure the amount of sediment deposition. The sediment quantity detector 55 can be, for example, a sediment volume measuring device or a sediment weight measuring device. Of course, the sediment weight measuring device needs to deduct the weight of the liquid on the sediment quantity detector 55. Specifically, it can be calculated by a preset calculation model. This embodiment of the invention is not limited to this.

[0066] The drilling mud overflow early warning and monitoring equipment disclosed in this invention can detect the mud and sand deposition during the flow of drilling mud by adding a mud and sand detection device 50. In the specific detection process, the mud and sand deposition situation of the drilling mud can be determined by detecting the mud and sand deposition volume or weight within a preset time period.

[0067] During the specific detection process, as time progresses, more and more sediment accumulates in the sediment detection chamber 51. Excessive sediment can easily affect subsequent continuous detection. Therefore, in other embodiments, when the amount of sediment deposited on the sediment quantity detector 55 is less than a preset threshold, the inlet valve 52 is opened and the outlet valve 53 is closed. The drilling mud in the third detection zone 103 will continue to enter the sediment detection chamber 51 through the inlet 511, thereby allowing the sediment deposition to be continuously measured.

[0068] If the amount of sediment deposited on the sediment detector 55 is greater than or equal to a preset threshold, the inlet valve 52 is closed and the discharge valve 53 is opened. In this case, the amount of sediment deposited on the sediment detector 55 is too large, so the inlet valve 52 needs to be closed to prevent drilling mud from flowing into the sediment detection chamber 51, and the discharge valve 53 is opened at the same time to remove the sediment deposited on the sediment detector 55.

[0069] In this embodiment of the invention, the liquid inlet valve 52 and the sand discharge valve 53 can be manually controlled valves or electrically controlled valves. This embodiment of the invention does not limit the specific types of the liquid inlet valve 52 and the sand discharge valve 53.

[0070] In other embodiments, the drilling mud overflow early warning monitoring device disclosed in this invention may further include a sampling device. The sampling device is located outside the housing 10. A first end of the sampling device is connected to the mud inlet 12, and a second end of the sampling device is connected to the third detection zone 103, thus forming a bypass structure in parallel with the inner cavity. The sampling device is used to sample and measure the drilling mud to obtain at least the sampling flow rate. During the specific detection process, the sampling device samples the flow rate of the drilling mud to determine if the sampled flow rate meets the requirements. If the sampled flow rate meets the detection requirements, the first mud parameter detection device 21, the second mud parameter detection device 22, and the third mud parameter detection device 23 can be activated.

[0071] The sampling device can measure the sampling flow rate. In one embodiment, the sampling device may include a sampling pipeline and a common flow meter. The flow meter detects the flow rate of the drilling mud flowing through the sampling pipeline to obtain the sampling flow rate.

[0072] Similarly, during the detection process, the deposition of mud and sand in the drilling mud on the wall of the sampling pipeline or the sampling pipeline not being full can lead to a large error in the flow meter detection. Based on this, in other embodiments, the sampling device may include a first detection tube 61, a second detection tube 62, a third detection tube 63, and a sampling flow detector 64. The first detection tube 61 is connected to the mud inlet 12, one end of the third detection tube 63 is connected to the first detection tube 61 through the second detection tube 62, and the other end of the third detection tube 63 is connected to the third detection zone 103. The second detection tube 62 is provided with a second Parshall flume open channel structure 621, and the sampling flow detector 64 is used to detect the level of the drilling mud flowing through the second Parshall flume open channel structure 621 to obtain the sampling flow rate. The second Parshall flume open channel structure 621 can have the same shape as the first Parshall flume open channel structure 30. The sampling flow detector 64 is essentially a level gauge capable of detecting the liquid level. The sampling flow detector 64 detects the level of drilling mud flowing through the second Parshall flume open channel structure and calculates the sampling flow rate. Similar to the principle of the first Parshall flume open channel structure 30, the level of drilling mud in the second Parshall flume open channel structure 621 and the flow rate of drilling mud flowing through the second Parshall flume open channel structure 621 have a preset mapping relationship. Through this mapping relationship, the sampling flow rate can be calculated from the liquid level, thus obtaining a more accurate sampling flow rate.

[0073] In other embodiments, the first detection tube 61 may be equipped with a first pressure sensor 611, which can detect the pressure of the drilling mud in the first detection tube 61, and the third detection tube 63 may be equipped with a second pressure sensor 631, which can detect the pressure of the drilling mud in the third detection tube 63.

[0074] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of the present invention.

Claims

1. A drilling mud overflow early warning and monitoring device, characterized in that, It includes a shell (10), a first mud parameter detection device (21), a second mud parameter detection device (22), and a third mud parameter detection device (23), wherein: The shell (10) is provided with an inner cavity and a mud inlet (12) and a mud outlet (13) communicating with the inner cavity. The mud inlet (12) and the mud outlet (13) are respectively opened at opposite ends of the shell (10). The inner cavity includes a first detection zone (101), a second detection zone (102), and a third detection zone (103) that are connected sequentially in the direction of drilling mud flow. The mud inlet (12) is located on the inner wall of the first detection zone (101), and the mud outlet (13) is located on the inner wall of the third detection zone (103). The first mud parameter detection device (21) is located in the first detection area (101) and is used to detect the drilling mud flowing through the first detection area (101) to obtain a first set of mud parameters; the second mud parameter detection device (22) is located in the second detection area (102) and is used to detect the drilling mud flowing from the first detection area (101) into the second detection area (102) to obtain a second set of mud parameters; the third mud parameter detection device (23) is located in the third detection area (103) and is used to detect the drilling mud flowing from the second detection area (102) into the third detection area (103) to obtain a third set of mud parameters; It also includes a first Parshall flume open channel structure (30), which is located in the inner cavity. The space on the first side of the first Parshall flume open channel structure (30) in the inner cavity is the first detection area (101); the space on the second side of the first Parshall flume open channel structure (30) in the inner cavity is the second detection area (102). The first side and the second side are opposite sides of the first Parshall flume open channel structure (30). The second mud parameter detection device (22) is located on the first Parshall flume open channel structure (30) to detect the drilling mud flowing into the first Parshall flume open channel structure (30) to obtain the second set of mud. Parameters; The first Parshall flume open channel structure (30) includes a funnel-shaped inlet section (31), an intermediate stable section (32) and a funnel-shaped outlet section (33) connected in sequence. The large end of the funnel-shaped inlet section (31) is connected to the first detection zone (101), the small end of the funnel-shaped inlet section (31) is connected to one end of the intermediate stable section (32), the other end of the intermediate stable section (32) is connected to the small end of the funnel-shaped outlet section (33), and the large end of the funnel-shaped outlet section (33) is connected to the third detection zone (103). The second mud parameter detection device (22) is used to detect the drilling mud flowing through the intermediate stable section (32) to obtain the second set of mud parameters.

2. The drilling mud overflow early warning and monitoring equipment according to claim 1, characterized in that, The first Parshall flume open channel structure (30) also includes a rectifier plate (34), which is disposed in the funnel-shaped inlet section (31) and the rectifier plate (34) is evenly provided with a plurality of rectifier holes (341).

3. The drilling mud overflow early warning and monitoring equipment according to claim 1, characterized in that, It also includes a degassing device (41), which is located in the third detection zone (103) and is used to degas the drilling mud flowing into the third detection zone (103).

4. The drilling mud overflow early warning and monitoring equipment according to claim 3, characterized in that, It also includes a mounting bracket (42), which is located on the third detection area (103), and the degassing device (41) and the third mud parameter detection device (23) are located on the mounting bracket (42).

5. The drilling mud overflow early warning and monitoring equipment according to claim 1, characterized in that, It also includes a sediment detection device (50), which includes a sediment detection chamber (51), an inlet valve (52), a discharge valve (53), a filter element (54), and a sediment quantity detector (55). The sediment detection chamber (51) is fixedly connected to the housing (10), and the sediment detection chamber (51) is provided with an inlet (511) and a discharge port (512). The inlet valve (52) is located at the inlet (511) to control the opening and closing of the inlet (511) and the third detection zone (103); the sand discharge valve (53) is located at the sand discharge port (512) to control the opening and closing of the sand discharge port (512); the filter element (54) is inclinedly located in the mud and sand detection chamber (51) and divides the mud and sand detection chamber (51) into a clear liquid space (501) and a mud and sand space (502); the mud and sand quantity detector (55) is located in the mud and sand detection chamber (51) and adjacent to the lower end of the filter element (54) to receive the mud and sand sliding down the slope of the filter element (54); the clear liquid space (501) is connected to the third detection zone (103) through a return pipe to discharge the drilling mud filtered by the filter element (54) to the third detection zone (103).

6. The drilling mud overflow early warning and monitoring equipment according to claim 5, characterized in that, When the amount of sediment is less than a preset threshold, the liquid inlet valve (52) opens and the sand discharge valve (53) closes. When the amount of sediment is greater than or equal to the preset threshold, the liquid inlet valve (52) is closed and the sand discharge valve (53) is opened.

7. The drilling mud overflow early warning and monitoring equipment according to claim 1, characterized in that, It also includes a sampling device located outside the housing (10), with a first end connected to the mud inlet (12) and a second end connected to the third detection zone (103). The sampling device is used to sample and measure drilling mud to obtain at least the sampling flow rate.

8. The drilling mud overflow early warning and monitoring equipment according to claim 7, characterized in that, The sampling device includes a first detection tube (61), a second detection tube (62), a third detection tube (63), and a sampling flow detector (64). The first detection tube (61) is connected to the mud inlet (12). One end of the third detection tube (63) is connected to the first detection tube (61) through the second detection tube (62), and the other end of the third detection tube (63) is connected to the third detection zone (103). The first detection tube (61) is equipped with a first pressure sensor (611), and the third detection tube (63) is equipped with a second pressure sensor (631). The second detection tube (62) is equipped with a second Parshall flume open channel structure (621). The sampling flow detector (64) is used to detect the level of drilling mud flowing through the second Parshall flume open channel structure (621) to obtain the sampling flow rate.

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