A downhole rapid sealing pressure measuring wireless transmission device and a construction method thereof

Abstract

The present application relates to a kind of well fast hole sealing pressure wireless transmission device, belong to coalbed gas pressure measurement field, including pipe body, pipe body one end is equipped with pressure sensor module, humidity sensor module, pressure sensor module, humidity sensor module is connected with the logic analysis storage device in pipe body respectively, still be equipped with launching device in pipe body;Pipe body is also equipped with trickle power supply device for the power supply of each module;Sensor fixer for being used to be clamped into borehole wall, hole sealing is arranged outside pipe body to borehole;Logic analysis storage device is used to store the pressure and humidity data collected by pressure sensor module and humidity sensor module, according to the reliability analysis of pressure data variation situation to borehole pressure data, dynamic evaluation is carried out to hole sealing state, judge whether there is gas leakage risk;Also be used to correct pressure data according to humidity data;Receiving device is used to receive the data transmitted by launching device, real-time monitoring hole sealing pressure situation.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of coal bed gas pressure measurement, and relates to a downhole rapid hole sealing pressure measurement wireless transmission device and a construction method thereof. BACKGROUND

[0002] At present, there are many types of downhole pressure measurement, but intelligent pressure measurement equipment has not been realized, and intelligent pressure measurement has not been substantially realized. The existing downhole pressure measurement range is small. Due to the complicated pressure measurement program, personnel need to read the data repeatedly, and there is a certain labor loss. Automatic pressure measurement, automatic evaluation of pressure measurement effect and automatic uploading of downhole ring network pressure measurement data by fixed receiver under unattended conditions cannot be realized. The existing technology cannot guarantee that the pressure measurement parameters are automatically uploaded to the well in the case of no personnel reading, realize intelligent pressure measurement and pressure measurement effect evaluation, and the existing technology has not realized the complete intelligence of downhole area pressure measurement. SUMMARY

[0003] Therefore, the purpose of the present application is to provide a downhole rapid hole sealing pressure measurement wireless transmission device and a construction method thereof.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0005] On the one hand, the present application provides a downhole rapid hole sealing pressure measurement wireless transmission device, which comprises a pipe body, wherein one end of the pipe body is provided with a pressure sensor module and a humidity sensor module, the pressure sensor module and the humidity sensor module are respectively electrically connected with a logic analysis storage device in the pipe body, the pipe body is further provided with a transmitting device for wirelessly transmitting the data calculated and stored by the logic analysis storage device to a receiving device, the pipe body is further provided with a trickle power supply device for supplying power to each module, and the pipe body is externally provided with a sensor fixer for clamping into the wall of a drill hole to seal the drill hole.

[0006] The logic analysis storage device is used for storing the pressure and humidity data collected by the pressure sensor module and the humidity sensor module, performing reliability analysis on the drill hole pressure data according to the change of the pressure data, dynamically evaluating the hole sealing state, and judging whether there is a gas leakage risk, and is also used for correcting the pressure data according to the humidity data.

[0007] The receiving device is used for receiving the data transmitted by the transmitting device and real-time monitoring the hole sealing pressure condition.

[0008] Further, when the humidity ratio collected by the humidity sensor module is 100%, the logic analysis storage device judges that the pressure data collected by the pressure sensor module is affected by moisture, and the logic analysis storage device corrects the pressure data.

[0009] Further, the logic analysis storage device detects that the pressure data collected by the pressure sensor module is continuously without reading or continuously decreases after rising, and determines that the drilling hole has air leakage.

[0010] Further, the logic analysis storage device is provided with a built-in pressure model data unit, compares the real-time monitored pressure curve with the built-in pressure model data unit, and reversely deduces the current pressure measurement state: the type judged by the built-in pressure model data unit includes a type of slowly rising pressure first and then stable, a type of rapidly rising pressure first and then stable, and a type of rising pressure first and then wave stable.

[0011] Further, the receiving device includes a built-in battery, an external power supply interface, a data transmission interface, a Bluetooth antenna and a display, the receiving device is communicated with the downhole data ring network through the data transmission interface, and the transmission pressure data is monitored in real time; or the receiving device communicates with the transmitting device through the Bluetooth antenna, numbers the data transmitted by the transmitting device, and reads the pressure data.

[0012] On the other hand, the application provides a construction method of the downhole rapid hole sealing pressure measurement wireless transmission device, including the following steps:

[0013] S1: the pipe body is pre-sent to a position by using a self hole sealing material section, the hole sealing material section is withdrawn, the sensor holder is clamped into the drilling hole wall, and the pipe body is sealed by the self material;

[0014] S2: the pressure sensor module continuously collects the coal seam gas pressure value and uploads to the logic analysis storage device;

[0015] S3: the humidity sensor module continuously collects the humidity data in the hole and uploads to the logic analysis storage device;

[0016] S4: the logic analysis storage device first judges whether there is water influence according to the humidity data, if there is, the pressure data is corrected and stored again;

[0017] S5: the logic analysis storage device evaluates the stored pressure data, if the pressure is continuously without reading or continuously decreases after rising, it is determined that the drilling hole has air leakage;

[0018] S6: when there is no air leakage, the logic analysis storage device compares the stored pressure data with the built-in pressure model data unit, and analyzes the current pressure measurement state;

[0019] S7: the logic analysis storage device sends all the received, stored and calculated data to the receiving device for display through the transmitting device.

[0020] The application has the advantages of realizing complete intelligentization of downhole area pressure measurement, simple structure, complete function, improving the pressure measurement precision and real-time performance.

[0021] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0022] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein:

[0023] Figure 1 This is a schematic diagram of the downhole rapid sealing and pressure measurement wireless transmission device described in this invention;

[0024] Figure 2 This is a schematic diagram of the receiving device structure;

[0025] Figure 3 This is a schematic diagram of in-between pressure measurement;

[0026] Figure 4 This is a schematic diagram of cross-layer pressure measurement.

[0027] Reference numerals: 1. Sensor; 2. Logic analysis storage device; 3. Trickle power supply device; 4. Sensor holder; 5. Sealing material segment; 6. External antenna; 7. Display; 8. Bluetooth antenna; 9. Battery; 10. External power interface; 11. Data transmission interface. Detailed Implementation

[0028] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0029] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0030] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0031] This invention provides a wireless transmission device for rapid borehole sealing and pressure measurement in wells, such as... Figure 1 As shown, the device includes a pressure sensor, a humidity sensor, a trickle power supply device 3, a transmitting device, an external antenna 6, a logic analysis and storage device 2, a sensor holder 4, a sealing material section 5, and a receiving device (analysis device, display device, power supply device). The pressure sensor and humidity sensor are installed at one end of the tube body, which is connected to the trickle power supply device 3, the storage device, the analysis device, and the Bluetooth device. The other end of the tube body is connected to the sealing material. The sensor holder 4 is installed on the outer wall of the tube body. By retracting the tube body, the sensor holder 4 is locked in place, thereby achieving sealing.

[0032] A pressure sensor detects changes in coalbed methane gas pressure, records and analyzes these changes, and stores the data in a logic analysis storage device 2. The memory of the logic analysis storage device 2 guarantees at least 30 days of gas pressure data recording. A transmitting device transmits the recorded gas pressure data from the logic analysis storage device 2, displaying the pressure magnitude on a handheld receiver display 7. A semi-flexible sealing material section 5 can be transported to the designated location for borehole pressure measurement and sealing. The length of the sealing section is adjustable to meet the on-site borehole sealing length requirements. A trickle power supply device 3 provides power to the sensor 1, logic analysis storage device 2, and transmitting device, ensuring a power supply time of at least 30 days. Figure 2 As shown, the receiving device is handheld and receives the waveband information transmitted from the borehole via Bluetooth antenna 8. The display 7 shows the changes in gas pressure over time and the gas leakage situation. It dynamically and intelligently displays the changes in gas pressure from the date of borehole sealing to the pressure stabilization period. The handheld receiving device can also be fixed next to the roadway and connected to a power source via external power interface 10. It is connected to the underground data ring network via data transmission interface 11 to monitor and transmit pressure data in real time.

[0033] The logic analysis and storage device 2 judges the output signals of the pressure sensor and humidity sensor. If 100% humidity is present, it is determined that moisture is present, and the collected data needs to be automatically corrected and stored. The logic analysis and storage device 2 evaluates and calculates the pressure data recorded in the borehole. If there is a continuous lack of pressure readings or a continuous decrease after an increase, it is determined that there is an air leak in the borehole. If there is no air leak, the logic analysis and storage device 2 monitors the pressure curve according to the real-time monitoring program through the built-in pressure model data unit, thereby deducing the current pressure measurement status. The built-in pressure model data unit has three types: pressure rises slowly and then stabilizes, pressure rises rapidly and then stabilizes, and pressure rises and then falls with a wave-like oscillation. Regardless of the type of pressure model, there should be no significant pressure drop (the pressure drop should be less than 0.015 MPa within three days after stabilization); otherwise, it is determined to be an air leak. The pressure measurement data is compared with the built-in data model unit, and the pressure curve is only output if it is within the error range.

[0034] like Figure 3 The diagram shown illustrates the use of this device for in-seam pressure measurement. Figure 4 This is a schematic diagram illustrating the use of this device for cross-layer pressure testing. The pressure testing location must meet the requirements of the pressure testing specifications (except for the pressure testing angle requirements). In this embodiment, the drilling pressure testing angle can be adjusted arbitrarily without affecting the pressure testing results. The borehole diameter for pressure testing is 65-95mm, and the sealing material has a high coefficient of thermal expansion, meeting the sealing requirements for boreholes of different diameters. This device can be combined with an intelligent drilling machine to create holes in different orientations and angles in a single operation, significantly reducing labor time and intensity through intelligent and rapid pressure testing.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A wireless transmission device for rapid borehole sealing and pressure measurement in wells, characterized in that: The device includes a tube body, one end of which is equipped with a pressure sensor module and a humidity sensor module. The pressure sensor module and humidity sensor module are electrically connected to a logic analysis and storage device inside the tube body. The tube body also includes a transmitter for wirelessly transmitting the data calculated and stored by the logic analysis and storage device to a receiver. The tube body also includes a trickle power supply device for powering each module. The tube body also includes a sensor holder for locking into the borehole wall to seal the borehole. The logic analysis storage device is used to store pressure and humidity data collected by the pressure sensor module and the humidity sensor module, to perform reliability analysis on the drilling pressure data based on the changes in pressure data, to dynamically evaluate the sealing status and determine whether there is a risk of air leakage; it is also used to correct the pressure data based on the humidity data. When the humidity sensor module collects a humidity ratio of 100%, the logic analysis and storage device determines that the pressure data collected by the pressure sensor module is affected by moisture, and the logic analysis and storage device corrects the pressure data. If the logic analysis storage device detects that the pressure data collected by the pressure sensor module has a continuous lack of reading or increases and then decreases continuously, it determines that there is an air leak in the borehole. The logic analysis storage device is equipped with a built-in pressure model data unit. The real-time monitored pressure curve is compared with the built-in pressure model data unit to deduce the current pressure measurement status. The types judged by the built-in pressure model data unit include pressure rising slowly and then stabilizing, pressure rising rapidly and then stabilizing, and pressure rising and then falling with a wave-like stabilization. The receiving device is used to receive data transmitted by the transmitting device and monitor the sealing pressure in real time.

2. The downhole rapid sealing and pressure measurement wireless transmission device according to claim 1, characterized in that: The receiving device includes a built-in battery, an external power interface, a data transmission interface, a Bluetooth antenna, and a display. The receiving device communicates with the downhole data ring network through the data transmission interface to monitor and transmit pressure data in real time; or it communicates with the transmitting device through the Bluetooth antenna to number the data transmitted by the transmitting device and read the pressure data.

3. A construction method for a downhole rapid sealing and pressure measurement wireless transmission device, characterized in that: This method is based on the downhole rapid sealing and pressure measurement wireless transmission device as described in claim 1, and includes the following steps: S1: The pipe body is pre-delivered to the designated position using its own sealing material segment, and then the sealing material segment is withdrawn so that the sensor holder is locked into the borehole wall, thereby achieving sealing of the pipe body by its own material. S2: The pressure sensor module continuously collects coal seam gas pressure values ​​and uploads them to the logic analysis and storage device; S3: The humidity sensor module continuously collects humidity data inside the hole and uploads it to the logic analysis and storage device; S4: The logic analysis storage device first determines whether there is moisture influence based on the humidity data. If so, the pressure data is corrected and then stored. S5: The logic analysis storage device evaluates the stored pressure data. If the pressure remains unread or continues to decrease after rising, it is determined that there is a leak in the borehole. S6: When there is no air leakage, the logic analysis storage device compares the stored pressure data with the built-in pressure model data unit to analyze the current pressure measurement status. S7: The logic analysis storage device receives, stores, and calculates all the data, which is then sent to the receiving device for display via the transmitting device.

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