Drilling tool management system of permanent magnetic field bar code

Abstract

The invention discloses a drilling tool management system of a permanent magnetic field bar code, and relates to the field of drilling tool management, the drilling tool management system comprises a computer, a high frequency data collector, a drilling tool, a circumferential array sensor and a permanent magnetic bar code, the computer is connected with the high frequency data collector, the high frequency data collector is connected with the circumferential array sensor, and the permanent magnetic bar code is connected with the drilling tool. A permanent magnet bar code is embedded in the surface of the drilling tool, the permanent magnet bar code is used for forming different magnetizing fields in the drilling tool and in air, and when the drilling tool drives the permanent magnet bar code to move, the permanent magnet bar code generates magnetic field signals with different intensities and distribution characteristics in the circumferential array sensor; the high-frequency data collector is used for transmitting the magnetic field signals collected by the circumferential array sensor to the computer; the computer is used for processing and displaying the magnetic field signals, and drilling tool management is achieved by obtaining drilling tool numbers. The drilling tool marking method solves the problems that in a traditional drilling tool marking method, due to the high-temperature and high-pressure severe environment, marks are missing, and signals are difficult to collect.

Description

Technical Field

[0001] The invention relates to the field of drilling tool management, and in particular to a drilling tool management system with permanent magnetic field bar coding. Background Art

[0002] With the development of oil and gas drilling technology, the drilling depth continues to increase, the types and quantity of drilling tools increase, and the ambient temperature and pressure increase, making drilling tool management more and more challenging. The traditional drilling tool management method is to stamp numbers on the surface of the drilling tools, but this method is time-consuming and labor-intensive, and due to wear and rust, long-term use will lead to information loss, making it difficult to carry out long-term and effective coding management of drilling tools.

[0003] In response to the above problems, patent CN1676864A proposes placing an annular carrier carrying information coding content into the drilling tool coupling and reading the information through a detection instrument. This method requires disassembling the coupling for detection and ensuring that the two drill rods connected by the coupling remain unchanged each time, otherwise the information recording will be wrong. In order to simplify the coding and detection methods and realize the online real-time information collection of drilling tools, some scholars have proposed to use radio frequency identification to encode and manage drilling tools. The journal "Development of Petroleum Drilling Tool Management System Based on RFID Technology" proposed to drill holes at the drill bit joint, put in a small RFID tag, and then seal it with epoxy resin. The antenna forms a ring array to read the information of the drilling tool in real time during the operation of drilling. Patent CN107679598A uses a cylindrical electronic carrier and places the electronic carrier on the drilling tool through a threaded connection. The information reader obtains the drilling tool information. Utility Model: CN204440442U, Utility Model: CN203925311U, Utility Model: CN201903901U proposed to embed the RFID tag with drilling tool information into the surface of the drilling tool, and read the drilling tool information through the ring tag at the wellhead. However, due to the limitations of chip circuits and materials, the above RFID tag method cannot adapt to high temperature and high pressure environments, resulting in the failure of the tag to be recognized, causing the failure of the drilling tool management system. In response to the harsh working environment of drilling tools, the journal Directly Printable Frequency Signatured Chipless RFID Tag for IoT Applications proposed a 36-bit chipless radio frequency identification tag. The RFID tag has no chip and is printed on the surface of the substrate using conductive materials. Since this method has no chip, it can adapt to the harsh working environment of drilling tools. However, drilling tools are generally made of metal materials, and chipless RFID tags will face the problem of being unable to be recognized. Therefore, how to manage drilling tools in high temperature and high pressure environments in real time and reliably is still a difficult problem. Summary of the invention

[0004] In view of the above deficiencies in the prior art, the present invention provides a drill tool management system with a permanent magnetic field bar code, which solves the problems of missing marks and difficult signal acquisition caused by the harsh environment of high temperature and high pressure in the traditional drill tool marking method.

[0005] To achieve the above invention purpose, the technical solution adopted by the present invention is: a drill tool management system with a permanent magnetic field bar code, including a computer, a high-frequency data collector, a drill tool, a circumferential array sensor, and a permanent magnetic bar code. The computer is connected to the high-frequency data collector, the high-frequency data collector is connected to the circumferential array sensor, and the permanent magnetic bar code is embedded on the surface of the drill tool; The permanent magnetic bar code is used to form different magnetization fields inside the drill tool and in the air. When the drill tool drives the permanent magnetic bar code to move, the permanent magnetic bar code generates magnetic field signals with different intensities and distribution characteristics in the circumferential array sensor; The high-frequency data collector is used to transmit the magnetic field signals collected by the circumferential array sensor to the computer; The computer is used to process and display the magnetic field signals, and realize drill tool management by obtaining the drill tool number.

[0006] Further, the permanent magnetic bar code includes a plurality of bar permanent magnets with different widths, lengths, magnetic directions, and gaps, and the bar permanent magnets are flush with the surface of the drill tool.

[0007] Further, the circumferential array sensor includes a plurality of sensors installed in an array around the drill tool, and there are ≥2 sensors covering the length direction of the permanent magnetic bar code within the length difference range between the longest bar permanent magnet and the shortest bar permanent magnet.

[0008] Further, the magnetic field signals collected by the circumferential array sensor include the length, width, and gap information of the permanent magnetic bar code.

[0009] Further, a drill tool management module is set in the computer. The drill tool management module decodes the acquired magnetic field signals based on the rules of the permanent magnetic bar code. Specifically, it calculates the lengths, widths, and gaps of the bar permanent magnets at different positions according to the number of sensors of the acquired magnetic field signals, the width, and the gap of the magnetic field signals, so as to obtain the coding information, and display and store it.

[0010] Further, the permanent magnetic bar code has an initial mark and an end mark, and the movement direction of the drill tool is judged through the magnetic field signal.

[0011] Further, the permanent magnetic bar code includes drill tool manufacturer, specification model, coding mark, and drill tool direction information.

[0012] The beneficial effects of the present invention are: (1) The marking is reliable for long-term use and does not affect the operation of the drilling tool or cause any accidents. The invention embeds a permanent magnetic bar code arranged in a certain regular pattern on the drilling tool, in which information such as the manufacturer, material and number can be recorded. Then, the magnetic field signal is read by the circumferential array sensor at the wellhead and read out through decoding, and then identified and managed in the computer. In this way, the drilling tool information can be obtained in real time, efficiently and accurately. In particular, when the drilling tool is inspected, the status changes of drilling tools with different numbers at different times can be recorded in real time, and the drilling tool can be managed throughout its entire use cycle.

[0013] (2) The method of the present invention is used to make drilling tool markings, which has stable performance, low cost, and simple operation. The drilling tool information is encoded through the length, width, and gap of the permanent magnet, and the amount of information data generated by the method of the present invention is large.

[0014] (3) In the method of the present invention, the array sensor, high-frequency data acquisition device and computer all work in a good environment above the well. The permanent magnet is used as a bar code substrate and is embedded in the surface of the drill bit, flush with the surface of the drill bit. During the detection process, the drill bit works in the harsh environment underground. Since the material is metal and the performance is stable, it can withstand high temperature, high pressure, high friction and corrosion environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The figure is a structural diagram of a drilling tool management system with permanent magnetic field bar coding.

[0016] Figure 2 This is a schematic diagram of the permanent magnetic bar code structure of Example 1.

[0017] Figure 3 This is the magnetic field distribution result diagram at position L1 under encoding rule 1.

[0018] Figure 4 This is the magnetic field distribution result diagram at position L2 under encoding rule 1.

[0019] Figure 5 This is the magnetic field distribution result diagram at position L3 under encoding rule 1.

[0020] Figure 6 This is the magnetic field distribution diagram of the first permanent magnetic bar code position of any number under coding rule 1.

[0021] Figure 7 This is the magnetic field distribution diagram of the second permanent magnetic bar code position of any number under coding rule 1.

[0022] Figure 8 This is a schematic diagram of the permanent magnetic bar code structure and digital results after decoding under coding rule 1.

[0023] Fig. 9This is a schematic diagram of the permanent magnetic bar code structure of Example 2.

[0024] Fig.10 This is the magnetic field distribution result diagram of different permanent magnetic bar coding positions under coding rule 2.

[0025] Fig.11 This is the magnetic field distribution diagram of different permanent magnetic bar code positions of any number under coding rule 2.

[0026] Fig.12 This is a schematic diagram of the permanent magnetic bar code structure and digital results after decoding under coding rule 2.

[0027] Among them: 1. Computer; 2. High-frequency data collector; 3. Drilling tools; 4. Circumferential array sensor; 5. Permanent magnetic bar code. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0029] The present invention provides a permanent magnetic field bar coding drill tool management system, which utilizes bar permanent magnets arranged according to certain rules inside the drill tool 3 to form a magnetic field with spatial distribution characteristics, and arranges array sensors circumferentially around the drill tool. The circumferential array sensor data is collected by a high-frequency data collector 2 and transmitted to a computer 1 for decoding, thereby obtaining drill tool coding information and managing the drill tools in a unified manner.

[0030] like Figure 1 As shown, a permanent magnetic field bar code drilling tool management system includes a computer 1, a high-frequency data collector 2, a drilling tool 3, a circumferential array sensor 4 and a permanent magnetic bar code 5, wherein the computer 1 is connected to the high-frequency data collector 2, the high-frequency data collector 2 is connected to the circumferential array sensor 4, and the surface of the drilling tool 3 is embedded with a permanent magnetic bar code 5; The permanent magnetic bar code 5 is used to form different magnetization fields inside the drilling tool 3 and in the air. When the drilling tool 3 drives the permanent magnetic bar code 5 to move, the permanent magnetic bar code 5 generates magnetic field signals with different intensities and distribution characteristics in the circumferential array sensor 4; The high-frequency data collector 2 is used to transmit the magnetic field signal collected by the circumferential array sensor 4 to the computer 1; The computer 1 is used to process and display the magnetic field signal and to achieve drilling tool management by acquiring the drilling tool number.

[0031] The permanent magnetic bar code 5 includes a plurality of bar-shaped permanent magnets with different widths, lengths, magnetic directions and gaps, and the bar-shaped permanent magnets are flush with the surface of the drilling tool 3 .

[0032] The circumferential array sensor 4 includes a plurality of sensors installed in an array around the drilling tool 3, and the length difference between the longest permanent bar magnet and the shortest permanent bar magnet includes ≥ 2 sensors covering the length direction of the permanent magnetic bar code.

[0033] The magnetic field signal collected by the circumferential array sensor 4 includes the length, width and gap information of the permanent magnetic bar code 5 .

[0034] The computer 1 is provided with a drilling tool management module, and the drilling tool management module decodes and processes the acquired magnetic field signal based on the rule of the permanent magnetic bar code 5, specifically: the length, width and gap of the bar permanent magnets at different positions are calculated according to the number of sensors of the acquired magnetic field signal, the width and gap of the magnetic field signal, so as to obtain the coding information, and display and store it.

[0035] The permanent magnetic barcode 5 has an initial mark and an end mark, and the movement direction of the drilling tool 3 is determined by the magnetic field signal.

[0036] The permanent magnetic bar code 5 includes the drilling tool manufacturer, specification model, coding mark and drilling tool direction information.

[0037] In the present invention, the high frequency data collector 2 is connected to the circumferential array sensor 4, and can quickly and accurately read the circumferential array sensor data and transmit it to the computer 1. The time for collecting data from the circumferential array sensor 4 as a whole is ≤0.1s.

[0038] The present invention provides a permanent magnetic field bar code drilling tool management system, which is completed based on the following understanding and inspiration of the inventor: the permanent magnetic bar code will generate a spatially distributed magnetic field of different sizes and distribution characteristics inside the drilling tool 3, the circumferential array sensor 4 will pick up the magnetic field information on the surface of the drilling tool 3 and transmit it to the computer 1 through the high-frequency data collector 2, the number of circumferential array sensors 4 that collect data can be used to obtain the permanent magnetic bar code length, and the signal width and gap can be obtained through the characteristics of the signal changing over time, thereby obtaining the permanent magnetic bar code width gap information, and the acquired magnetic field signal is decoded through the set coding rules to obtain the drilling tool information. The permanent magnetic bar code 5 is embedded in the surface of the drilling tool 1 and flush with it during installation, and the permanent magnet is a metal material, which can be used stably for a long time in a high temperature, high pressure and high friction environment.

[0039] Embodiment 1, as Figure 2As shown, this embodiment uses the length and width information of the permanent magnet to encode the drill tool, wherein the encoding information is recorded in the drill tool number for explanation. The permanent magnet gap is 5mm (the gap refers to the distance between the centers of two adjacent permanent magnets), and its length and width information are shown in the following table (the numbering order is from left to right). In order to be able to identify the initial and ending positions of the marking information during the drilling tool signal processing and prevent reverse decoding from causing marking information recognition errors, two permanent magnets with a length of 20mm and a width of 0.1mm and 2mm are used for marking. The direction in which the 2mm permanent magnet passes through the sensor first is the initial position. Permanent magnets of different lengths and widths represent different numbers from 0 to 9. As shown in Table 1.

[0040] Table 1 Drilling tool coding information based on permanent magnet length and width

[0041] Figure 3 , Figure 4 and Figure 5 The magnetic field distribution results of different permanent magnetic bar code positions under coding rule 1. Figure 3 (a)-(c) are the cross-sectional view of the permanent magnet at the L1 position, the magnetic field distribution results, and the magnetic field size at a height of 0.1 mm from the permanent magnet. It can be seen from the result diagram that the initial and final positions are composed of two magnetic fields with the smallest and largest widths, and the magnetic field signal widths of numbers 0 and 5 are consistent, the magnetic field signal widths of numbers 1 and 6 are consistent, the magnetic field signal widths of numbers 2 and 7 are consistent, the magnetic field signal widths of numbers 3 and 8 are consistent, and the magnetic field signal widths of numbers 4 and 9 are consistent, and the magnetic field signal widths of numbers 0 and 5 are greater than the magnetic field signal widths of numbers 1 and 6, greater than the magnetic field signal widths of numbers 2 and 7, greater than the magnetic field signal widths of numbers 3 and 8, and greater than the magnetic field signal widths of numbers 4 and 9. That is, the signal width can be preliminarily decoded.

[0042] Figure 4 (a)-(c) are the cross-sectional view of the permanent magnet at the L2 position, the magnetic field distribution results, and the magnetic field size at a height of 0.1 mm from the permanent magnet. The result diagram also shows the initial and final positions consisting of two magnetic fields with the smallest and largest widths. At the same time, there is no magnetic field signal at the positions of numbers 5-9, and there are magnetic field signals of different widths at positions 0-4. The magnetic field signal width of number 0 is greater than the magnetic field signal width of number 1, greater than the magnetic field signal width of number 2, greater than the magnetic field signal width of number 3, and greater than the magnetic field signal width of number 4.

[0043] Figure 5(a)-(c) are the cross-sectional view of the permanent magnet at the L3 position, the magnetic field distribution result, and the magnetic field size at a height of 0.1mm from the permanent magnet. The result diagram also shows that at the initial and final positions composed of the two magnetic fields with the smallest and largest widths, there is no digital magnetic field signal, which can be used to determine the direction of digital encoding. Based on the signals of the above three position sensors, the encoding of numbers 0-9 can be realized, and the determination of the direction of digital signal reading can be realized.

[0044] Figure 6 and Figure 7 Magnetic field distribution of different permanent magnetic bar code positions of arbitrary numbers under coding rule 1. Figure 6 (a)-(c) are the cross-sectional view of the permanent magnet at a certain position, the magnetic field distribution result, and the magnetic field size at a height of 0.1 mm from the permanent magnet. Figure 3 , Figure 4 , Figure 5 By comparing the magnetic field width and initial signal distribution of different digital signals in the medium magnetic field coding rules, the acquired signals can be preliminarily decoded. The signals obtained from left to right are: (end), (3 / 8), (3 / 8), (1 / 6), (1 / 6), (4 / 9), (4 / 9), (2 / 7), (2 / 7), (3 / 8), (0 / 5), (initial).

[0045] Figure 7 (a)-(c) are the cross-sectional view of the permanent magnet at another position, the magnetic field distribution result and the magnetic field size at a height of 0.1 mm from the permanent magnet. Combining the above signal results and encoding rules, the signal can be finally decoded: (end), (3), (8), (1), (6), (4), (4), (2), (7), (8), (0), (initial).

[0046] Figure 8 The figure is a schematic diagram of the decoded permanent magnetic bar code structure and digital results under coding rule 1. The permanent magnetic bar code structure is reproduced through the above data results and coding rules, and the drilling tool number: 0872446183 is obtained.

[0047] Embodiment 2, as Fig. 9As shown, this embodiment uses the permanent magnet length and gap information to encode the drill tool, wherein the coding information is recorded in the drill tool number for explanation. The length of the digital marking permanent magnet is 17.5 mm, and the length of the permanent magnet at the initial and end positions is 20 mm. The gap (gap refers to the distance between the centers of two adjacent permanent magnets) and width information are shown in the following table (numbering order is from left to right). In order to identify the initial and end positions of the marking information during the drilling tool signal processing and prevent reverse decoding from causing marking information recognition errors, two permanent magnets with a length of 20 mm and a width of 0.1 mm and 2 mm are used for marking. The direction in which the 2 mm permanent magnet passes through the sensor first is the initial position. Permanent magnets with different gaps and widths represent different numbers from 0 to 9. As shown in Table 2.

[0048] Table 2 Drilling tool coding information based on permanent magnet length and gap

[0049] Fig.10 This is the magnetic field distribution result diagram of different permanent magnetic bar coding positions under coding rule 2. Fig.10 (a)-(c) are respectively the cross-sectional view of the permanent magnet, the magnetic field distribution result and the magnetic field size at a height of 0.1mm from the permanent magnet. It can be seen from the result diagram that the initial and ending positions are composed of two magnetic fields with the smallest and largest widths. The magnetic field signal widths of numbers 0 and 5 are consistent, the magnetic field signal widths of numbers 1 and 6 are consistent, the magnetic field signal widths of numbers 2 and 7 are consistent, the magnetic field signal widths of numbers 3 and 8 are consistent, and the magnetic field signal widths of numbers 4 and 9 are consistent; at the same time, the magnetic field signal gaps of numbers 0-4 are consistent, and the magnetic field signal gaps of numbers 5-9 are consistent; and the magnetic field signal widths of numbers 0 and 5 are greater than the magnetic field signal widths of numbers 1 and 6> the magnetic field signal widths of numbers 2 and 7> the magnetic field signal widths of numbers 3 and 8> the magnetic field signal widths of numbers 4 and 9, and the magnetic field signal gaps of numbers 0-4 are greater than the magnetic field signal gaps of numbers 5-9, that is, the signal width can be preliminarily decoded. Based on the signal width. Fig.10 The initial signal width can realize the encoding of numbers 0-9 and determine the reading direction of the digital signal.

[0050] Fig.11 This is the magnetic field distribution diagram of different permanent magnetic bar code positions of any number under coding rule 2. Fig.11 (a)-(c) are the cross-sectional view of the permanent magnet, the magnetic field distribution result and the magnetic field size at a height of 0.1 mm from the permanent magnet, respectively. Fig.10 By comparing the magnetic field width and gap distribution of different digital signals in the magnetic field encoding rules, the acquired signals can be decoded. The signals obtained from left to right are: (end), (9), (2), (8), (1), (7), (4), (3), (6), (3), (6), (initial).

[0051] Fig.12 The figure is a schematic diagram of the decoded permanent magnetic bar code structure and digital results under coding rule 2. The permanent magnetic bar code structure is reproduced through the above data results and coding rules, and the drilling tool number: 6363471829 is obtained.

[0052] The method proposed in this application has great advantages for the management of drilling tools with large amounts of data and harsh environments. The exploration of this new method breaks through the limitations of traditional marking methods for high temperature, high pressure, friction, and corrosive environments of drilling tools, and can realize real-time, efficient, and accurate marking and management of drilling tools.

[0053] Those skilled in the art will appreciate that the embodiments described herein are intended to help readers understand the principles of the present invention, and should be understood that the protection scope of the present invention is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific variations and combinations that do not deviate from the essence of the present invention based on the technical revelations disclosed by the present invention, and these variations and combinations are still within the protection scope of the invention.

Claims

1. A permanent magnetic field bar coding drilling tool management system, characterized in that: The invention comprises a computer (1), a high-frequency data collector (2), a drilling tool (3), a circumferential array sensor (4) and a permanent magnetic bar code (5), wherein the computer (1) is connected to the high-frequency data collector (2), the high-frequency data collector (2) is connected to the circumferential array sensor (4), and the surface of the drilling tool (3) is embedded with the permanent magnetic bar code (5); The permanent magnetic bar code (5) is used to form different magnetization fields inside the drilling tool (3) and in the air. When the drilling tool (3) drives the permanent magnetic bar code (5) to move, the permanent magnetic bar code (5) generates magnetic field signals with different intensities and distribution characteristics in the circumferential array sensor (4); The high-frequency data collector (2) is used to transmit the magnetic field signal collected by the circumferential array sensor (4) to the computer (1); The computer (1) is used to process and display the magnetic field signal, and to achieve drilling tool management by acquiring the drilling tool number.

2. A permanent magnetic field bar coding drilling tool management system according to claim 1, characterized in that: The permanent magnetic bar code (5) comprises a plurality of bar-shaped permanent magnets with different widths, lengths, magnetic directions and gaps, and the bar-shaped permanent magnets are flush with the surface of the drilling tool (3).

3. A permanent magnetic field bar coding drilling tool management system according to claim 2, characterized in that: The circumferential array sensor (4) comprises a plurality of sensors installed in an array around the drilling tool (3), wherein the length difference between the longest permanent bar magnet and the shortest permanent bar magnet includes ≥2 sensors covering the length direction of the permanent magnetic bar code.

4. A permanent magnetic field bar coding drilling tool management system according to claim 1, characterized in that: The magnetic field signal collected by the circumferential array sensor (4) includes the length, width and gap information of the permanent magnetic bar code (5).

5. A permanent magnetic field bar coding drilling tool management system according to claim 1, characterized in that: The computer (1) is provided with a drilling tool management module, and the drilling tool management module decodes the acquired magnetic field signal based on the rule of the permanent magnetic bar code (5), specifically: the length, width and gap of the bar permanent magnets at different positions are calculated according to the number of sensors of the acquired magnetic field signal, the width and gap of the magnetic field signal, so as to obtain the coding information, and display and store it.

6. A permanent magnetic field bar coding drilling tool management system according to claim 1, characterized in that: The permanent magnetic barcode (5) has an initial mark and an end mark, and the movement direction of the drilling tool (3) is determined by means of a magnetic field signal.

7. A permanent magnetic field bar coding drilling tool management system according to claim 1, characterized in that: The permanent magnetic barcode (5) includes drilling tool manufacturer, specification model, coding mark and drilling tool direction information.

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