Drilling fluid flow signal sampling processing control equipment

Abstract

The utility model relates to the technical field of drilling fluid flow sampling, in particular to drilling fluid flow signal sampling processing control equipment which comprises an anti-explosion box body, an anti-explosion box cover, a plurality of connector interfaces, two sampling channel interfaces, a control button module and an electrical module arranged in the anti-explosion box body. The electrical module comprises multiple groups of modules such as a power supply module, a main control module and a signal acquisition module; the signal acquisition module comprises an analog quantity amplifier and an analog quantity sampling module, the analog quantity acquisition module comprises a sampling channel I and a sampling channel II, and data output by the sampling channel I and the sampling channel II are transmitted to the main control module through the analog quantity amplifier; the first sampling channel and the second sampling channel receive data transmitted by the sensor module at the same time through the two sampling channel interfaces respectively. The technical problems that a traditional drilling fluid flow signal sampling processing control device is limited in layout and difficult to transport in complex terrains, and data are inaccurate due to the single-channel design are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling fluid flow sampling, and particularly relates to a drilling fluid flow signal sampling, processing and control device. Background Technique

[0002] In recent years, with the continuous enhancement of the domestic oil and gas exploration and development efforts, the depth and scale of oil and gas well drilling have both increased significantly. This has not only brought a sharp increase in production tasks and the complication of the operation environment, but also greatly increased the well control risk, resulting in frequent overflow and leakage accidents during the drilling process. As a key parameter for monitoring drilling safety, the accurate measurement of the drilling inlet flow is crucial for early detection and warning of overflow and leakage, and it can effectively prevent the further deterioration of drilling complications. However, in the face of the complex and changeable working conditions at the drilling site, as well as the influence of the high viscosity, high solid particle content of the drilling fluid and the drastic fluctuation of the fluid pressure, the existing flowmeter products often fail to meet the actual operation requirements, and often suffer from a decrease in measurement accuracy or damage due to being unable to withstand high pressure.

[0003] Traditional drilling fluid flow signal sampling, processing and control devices mainly include a sensor module, a data acquisition and processing module, and a main control module. The sensor module is arranged in the pipeline where the drilling fluid flows, and it converts the flow velocity or flow rate of the drilling fluid into an electrical signal and immediately transmits it to the data acquisition and processing module in the control room; after filtering and amplifying the signal, the data acquisition and processing module then transmits it to the main control module arranged in the control room. The main control module analyzes the received signal according to a preset algorithm and immediately triggers an alarm once abnormal flow is detected. These devices cooperate together to achieve accurate monitoring of the drilling fluid flow.

[0004] However, the application of traditional drilling fluid flow signal sampling, processing and control devices in complex terrains has many limitations. There is usually a physical connection between the sensor module and the data acquisition and processing module, which not only limits the length of the connection (too long may lead to inaccurate data, a messy on-site layout, and a large occupied space; too short will limit the equipment layout and affect the ability of operators to take shelter in case of emergency, thus endangering well control safety), but also increases the impracticality in complex terrains; in addition, the complex connection between modules not only makes the equipment difficult to transport, but also increases the maintenance difficulty. More importantly, traditional devices generally adopt a single-channel design for flow signal sampling. This design is prone to inaccurate flow data when the sensor fails, which in turn affects the timeliness of the alarm and brings potential safety hazards to drilling operations. Content of the Utility Model

[0005] The purpose of the present application is to provide a drilling fluid flow signal sampling, processing and control device, which solves the technical problems of limited layout, difficult transportation in complex terrains and inaccurate data caused by single-channel design in traditional drilling fluid flow signal sampling, processing and control devices.

[0006] In order to solve the above technical problems, the solution adopted in the present application is as follows:

[0007] The present utility model provides a drilling fluid flow signal sampling, processing and control device, including an explosion-proof box body, an explosion-proof box cover hinged to the explosion-proof box body, a plurality of connector interfaces, a sampling channel interface, an electrical module, a sensor module, and a control button module; the plurality of connector interfaces, the sampling interface, and the control button module are all embedded on the outer side of the explosion-proof box body, the electrical module is arranged inside the explosion-proof box body, the electrical module includes a power module, a main control module, and a signal acquisition module, and the power module, the main control module, and the signal acquisition module are connected to each other pairwise; the power module is connected to the control button module; the sensor module transmits data to the signal acquisition module through the sampling channel interface; characterized in that: the signal acquisition module includes an analog amplifier and an analog sampling module, the analog acquisition module includes a sampling channel one and a sampling channel two, and the data output from the output ends of the sampling channel one and the sampling channel two are transmitted to the main control module through the analog amplifier; two sampling channel interfaces are embedded on the outer side of the explosion-proof box body, and the input ends of the sampling channel one and the sampling channel two respectively receive the data transmitted by the sensor module through the two sampling channel interfaces simultaneously.

[0008] In some embodiments, the analog sampling module further includes a detection module, the first input end and the second input end of the detection module are respectively connected to the output end of the sampling channel one and the output end of the sampling channel two, and the first output end and the second output end of the detection module are both connected to the main control module.

[0009] In some embodiments, the detection module includes a differential bias amplifier, a comparison module one, and a comparison module two; the two input ends of the differential bias amplifier are respectively used as the first input end and the second input end of the detection module, the output end of the differential bias amplifier, the input end of the comparison module one, and the input end of the comparison module two are connected, and the output end of the comparison module one and the output end of the comparison module two are respectively used as the first output end and the second output end of the detection module.

[0010] In some embodiments, the electrical module further includes a signal exchange module and a signal transmission module, the main control module is connected through the signal exchange module and the signal transmission module; the signal transmission module is connected to the monitoring end through the connector interface.

[0011] In some embodiments, the signal switching module includes a mini - micro switch, the signal transmission module includes a LORA transmission module, and the main control module transmits and receives data with the monitoring end through the mini - micro switch, the LORA transmission module, and the connector interface in sequence.

[0012] In some embodiments, it further includes a display control module. The display control module includes a touch serial screen, and the touch serial screen is embedded in the explosion - proof box cover; the touch serial screen is respectively connected to the main control module and the control button module.

[0013] In some embodiments, an increased - safety waterproof door for protecting the touch serial screen is hinged on the top of the explosion - proof box cover.

[0014] In some embodiments, the sensor module includes two groups of strain sensors. The data output end of one group of strain sensors is connected to the input end of the first sampling channel through the sampling channel interface, and the data output end of the other group of strain sensors is connected to the input end of the second sampling channel through the sampling channel interface.

[0015] In some embodiments, it further includes a grounding post, and the grounding post is fixed on the outer side of the explosion - proof box body.

[0016] The technical solution of this application has at least the following advantages and beneficial effects:

[0017] 1. This device integrates the main control module, the signal acquisition module, the signal switching module, and the wireless signal transmission module in the explosion - proof box, realizing the convenient transportation and simplified maintenance of the device. Through the optimized physical connection design between the sensor module and the signal acquisition module, the signal is accurately transmitted to the signal acquisition module for processing, and then through the main control module and the signal switching module, it is finally transmitted wirelessly to the remote monitoring end; operators can configure parameters at the remote monitoring end to achieve flexible control and management of the device. This device avoids the messy on - site layout caused by the long physical wiring in traditional devices, and at the same time ensures that in case of an emergency, the device will not affect the operator's ability to take refuge due to short - circuit connections, ensuring well control safety. In addition, this device is also equipped with a display control module, and operators can also flexibly set parameters at the drilling operation site, greatly improving the flexibility and safety of drilling operations.

[0018] 2. This device adopts a dual-channel design and is equipped with two sets of strain sensors to achieve real-time and accurate acquisition of the drilling fluid flow rate. These two sets of sensors respectively transmit the collected data to the analog sampling module through independent sampling channels. A detection module is set in the analog sampling module. This detection module can perform fault detection based on the data transmitted by the two channels. Once a fault is detected in any sensor, the detection module will locate the faulty sensor and immediately send a fault location signal to the main control module. After receiving the signal, the main control module can promptly notify the operator to ensure that the operator can be aware of it in the first time and take corresponding measures to ensure the safety and continuity of the drilling operation. Description of the Drawings

[0019] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0020] Figure 2 is a right view of the present utility model;

[0021] Figure 3 is a left view of the present utility model;

[0022] Figure 4 is a front view of the present utility model;

[0023] Figure 5 is a sectional view taken along line B-B of the present utility model;

[0024] Figure 6 is a schematic diagram of the overall electrical module of the present utility model;

[0025] Figure 7 is the detection module of the present utility model.

[0026] In the figure: 1 - Sampling channel interface, 2 - Connector interface, 3 - Display control module, 4 - Control button. Detailed Implementation Manner

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. If terms such as "center", "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is usually placed during use. This is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this application. It should also be noted that unless otherwise clearly specified and limited, if terms such as "set", "installed", "connected" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

[0029] Embodiment 1

[0030] Please refer to Figures 1-4 , the present utility model provides a drilling fluid flow signal sampling processing and control device. The same as the prior art, it includes an explosion-proof box body, an explosion-proof box cover hinged to the explosion-proof box body, a plurality of connector interfaces 2, a sampling channel interface 1, an electrical module, a sensor module, and a control button module; the plurality of connector interfaces 2, the sampling interface, and the control button module are all embedded on the outer side of the explosion-proof box body, the electrical module is arranged inside the explosion-proof box body, the electrical module includes a power module, a main control module, and a signal acquisition module, and the power module, the main control module, and the signal acquisition module are connected to each other pairwise; the power module is connected to the control button module; the sensor module transmits data to the signal acquisition module through the sampling channel interface 1;

[0031] It should be explained that the power module is a switching power supply.

[0032] Different from the prior art, the signal acquisition module includes an analog amplifier and an analog sampling module. The analog acquisition module includes a sampling channel one and a sampling channel two. The data output from the output ends of the sampling channel one and the sampling channel two is transmitted to the main control module through the analog amplifier; two sampling channel interfaces 1 are embedded on the outer side of the explosion-proof box body, and the input ends of the sampling channel one and the sampling channel two respectively receive the data transmitted by the sensor module through the two sampling channel interfaces 1 at the same time.

[0033] It should be noted that the analog amplifier is used to filter and amplify the received analog signal data to ensure the accuracy and reliability of the data; the analog sampling module is used to receive the data transmitted by the sensor module.

[0034] It should be noted that the sensor module includes two groups of strain sensors. The data output end of one group of strain sensors is connected to the input end of the first sampling channel through the sampling channel interface 1, and the data output end of the other group of strain sensors is connected to the input end of the second sampling channel through the sampling channel interface 1. The strain sensors are arranged in the drilling fluid flow pipeline, and they convert the material strain signals caused by the monitored flow impact into electrical signals and transmit them to the analog sampling module.

[0035] The analog sampling module further includes a detection module. The first input end and the second input end of the detection module are respectively connected to the output end of the first sampling channel and the output end of the second sampling channel, and the first output end and the second output end of the detection module are both connected to the main control module;

[0036] The detection module includes a differential bias amplifier, a first comparison module, and a second comparison module; the two input ends of the differential bias amplifier are respectively used as the first input end and the second input end of the detection module, the output end of the differential bias amplifier, the input end of the first comparison module, and the input end of the second comparison module are connected, and the output end of the first comparison module and the output end of the second comparison module are respectively used as the first output end and the second output end of the detection module.

[0037] It should be explained that the differential bias amplifier is used to perform differential, add a positive bias voltage, and amplify the data of the two sampling channels, and then introduce them into the subsequent first comparison module and second comparison module to judge whether there is a fault and locate; the first comparison module and the second comparison module output signals to the main control module according to the judgment results;

[0038] It should be explained that the signal output by the first comparison module represents that there is a large error in the data transmitted by the first sampling channel, that is, it is initially judged that the strain sensor connected to the first sampling channel has a fault; the signal output by the second comparison module represents that there is a large error in the data transmitted by the second sampling channel, that is, it is initially judged that the strain sensor connected to the first sampling channel has a fault.

[0039] This detection module uses real-time data for comparison, which can more accurately reflect the current flow state of the drilling fluid. Compared with fixed reference data, real-time data is closer to the actual operating conditions, reducing errors caused by data lag or inconsistent fixed standards with the actual situation.

[0040] Furthermore, in this embodiment, as Figure 7 shown, the detection module includes an operational amplifier U3, comparators U1, U2, sliding rheostats R1, R2, resistors R3, R4, R5, R6, R7, R8, and a capacitor C1;

[0041] Among them, the differential bias amplifier includes operational amplifier U3, resistors R3, R4, R5, R6, R7, R8, and capacitor C1; the first comparison module includes comparator U1 and potentiometer R2; the second comparison module includes comparator U2 and potentiometer R1;

[0042] Specifically, one end of resistor R5 is set as the CON_IN1 input terminal, and the other end of resistor R5, the negative input terminal of operational amplifier U3, one end of resistor R4, and one end of resistor R3 are connected. The other end of resistor R4 is grounded; one end of resistor R6 is set as the CON_IN2 input terminal, and the other end of resistor R6, one end of resistor R7, one end of resistor R8, and the positive input terminal of operational amplifier U3 are connected. The other end of resistor R7 is connected to the power supply, and the other end of resistor R8 is grounded; pin 2 of operational amplifier U3 is connected to the power supply, and pin 5 is grounded; the other end of resistor R3, the output terminal of operational amplifier U3, one end of capacitor C1, the negative input terminal of comparator U1, and the positive input terminal of comparator U2 are connected. The positive input terminal of comparator U1 is connected to the middle pin of potentiometer R2. One end of potentiometer R2 and pin 4 of comparator U1 are connected and connected to the power supply. The other end of potentiometer R2 is grounded, and pin 5 of comparator U1 is grounded. The output terminal of comparator U1 is set as the CON_OUT2 output terminal; the negative input terminal of comparator U2 is connected to the middle pin of potentiometer R1. One end of potentiometer R1 is connected to the power supply, and the other end of potentiometer R1 is connected to pin 5 of comparator U2 and grounded. Pin 4 of comparator U2 is connected to the power supply, and the output terminal of comparator U2 is set as the CON_OUT1 output terminal.

[0043] It should be noted that the data transmission terminal of channel one is connected to the CON_IN1 input terminal, and the data transmission terminal of channel two is connected to the CON_IN2 input terminal; both the CON_OUT1 output terminal and the CON_OUT2 output terminal are connected to the main control module.

[0044] The electrical module further includes a signal exchange module and a signal transmission module. The main control module is connected through the signal exchange module and the signal transmission module; the signal transmission module is connected to the monitoring end through connector interface 2;

[0045] It should be noted that the signal exchange module includes a mini micro switch, and the signal transmission module includes a LORA transmission module. The main control module transmits and receives data with the monitoring end through the mini micro switch, the LORA transmission module, and connector interface 2 in sequence to ensure that the operator remotely monitors the drilling operation site at the monitoring end.

[0046] It should be explained that the LORA transmission module can maintain the performance of the original data and allows users to make customized adjustments according to needs.

[0047] It should be explained that the monitoring end is configured with a display screen and a storage medium. The data received by the monitoring end will be displayed on the display screen, and the storage medium will store the data.

[0048] The main control module is a card-type microcomputer, which processes, analyzes, and stores the received data. It can promptly give early warnings to the operators to ensure that the operators can be aware of the problems occurring at the drilling operation site in the first place and take corresponding measures to ensure the safety and continuity of the drilling operation.

[0049] The present utility model further includes a display control module 3. The display control module 3 includes a touch serial screen, and the touch serial screen is embedded in the explosion-proof box cover; the touch serial screen is respectively connected to the main control module and the control button module; the touch serial screen is used to display the inlet flow rate, and the operator can also use the touch serial screen to set parameters at the drilling operation site, greatly improving the flexibility and safety of the drilling operation.

[0050] It should be noted that an increased safety type waterproof door for protecting the touch serial screen is also hinged on the top of the explosion-proof box cover.

[0051] The present utility model further includes a grounding post, and the grounding post is fixed on the outer side of the explosion-proof box body.

[0052] It should be explained that the explosion-proof grade of the explosion-proof box in the present utility model is Exdb IIBT4 Gb, which can be used in IIB-level gas environments, and the operating environment temperature can reach 130°C.

[0053] It should be noted that the control button module includes a power button and a display button; both the power button and the display button are lighted buttons. The power button can control the start and stop of this device, and the display button can control the start and stop of the display control module 3.

[0054] It should be noted that the connector interface 2 includes but is not limited to a power interface, an Ethernet interface, and a wireless network interface.

[0055] So far, the embodiments of the present utility model have been described in detail. In order to avoid obscuring the concept of the present utility model, some details well known in the art have not been described. Those skilled in the art can clearly understand how to implement the technical solutions of the present utility model based on the above description. The scope of the present utility model is defined by the appended claims.

Claims

1. A drilling fluid flow signal sampling and processing control device, comprising an explosion-proof box, an explosion-proof box cover hinged to the explosion-proof box, a plurality of connector interfaces (2), a sampling channel interface (1), an electrical module, a sensor module, and a control button module; the plurality of connector interfaces (2), the sampling channel interface, and the control button module are all embedded outside the explosion-proof box, the electrical module is arranged inside the explosion-proof box, the electrical module comprises a power module, a main control module, and a signal acquisition module, the power module, the main control module, and the signal acquisition module are connected to each other in pairs; the power module is connected to the control button module; the sensor module transmits data to the signal acquisition module through the sampling channel interface (1); characterized in that: The signal acquisition module comprises an analog quantity amplifier and an analog quantity sampling module, the analog quantity sampling module comprises a sampling channel 1 and a sampling channel 2, the data outputted by the output end of the sampling channel 1 and the output end of the sampling channel 2 are transmitted to the main control module through the analog quantity amplifier; two sampling channel interfaces (1) are embedded on the outside of the explosion-proof box, the input end of the sampling channel 1 and the input end of the sampling channel 2 respectively receive the data transmitted by the sensor module simultaneously through the two sampling channel interfaces (1).

2. The drilling fluid flow signal sampling, processing and control device according to claim 1, characterized in that: The analog quantity sampling module also includes a detection module, wherein input terminal 1 and input terminal 2 of the detection module are respectively connected to the output terminal of sampling channel 1 and the output terminal of sampling channel 2, and output terminal 1 and output terminal 2 of the detection module are both connected to the main control module.

3. The drilling fluid flow signal sampling, processing and control device according to claim 2, characterized in that: The detection module includes a differential bias amplifier, a comparison module 1, and a comparison module 2; the two input ends of the differential bias amplifier serve as the input end 1 and the input end 2 of the detection module respectively, the output end of the differential bias amplifier, the input end of the comparison module 1, and the input end of the comparison module 2 are connected, and the output end of the comparison module 1 and the output end of the comparison module 2 serve as the output end 1 and the output end of the detection module respectively.

4. The drilling fluid flow signal sampling, processing and control device according to claim 1, characterized in that: The electrical module also includes a signal exchange module and a signal transmission module, and the main control module is connected to the signal transmission module via the signal exchange module; the signal transmission module is connected to the monitoring end via the connector interface (2).

5. The drilling fluid flow signal sampling, processing and control device according to claim 4, characterized in that: The signal exchange module comprises a mini micro switch, the signal transmission module comprises a LORA transmission module, and the main control module transmits data to and from the monitoring end via the mini micro switch, the LORA transmission module, and the connector interface (2) in sequence.

6. The drilling fluid flow signal sampling, processing and control device according to claim 1, characterized in that: It also comprises a display control module (3), the display control module (3) comprises a touch serial port screen, the touch serial port screen is embedded in the explosion-proof box cover; the touch serial port screen is respectively connected to the main control module and the control button module.

7. The drilling fluid flow signal sampling, processing and control device according to claim 6, characterized in that: The top of the explosion-proof box cover is also hinged with an increased safety waterproof door for protecting the touch serial port screen.

8. The drilling fluid flow signal sampling, processing and control device according to claim 1, characterized in that: The sensor module comprises two groups of strain sensors, wherein the data output end of one group of strain sensors is connected to the input end of sampling channel one through the sampling channel interface (1), and the data output end of the other group of strain sensors is connected to the input end of sampling channel two through the sampling channel interface (1).

9. The drilling fluid flow signal sampling, processing and control device according to claim 1, characterized in that: It also includes a grounding column, which is fixed to the outside of the explosion-proof box.

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