Method and system for detecting wall thickness of coiled tubing

Abstract

The embodiment of the invention discloses a method and system for detecting the wall thickness of a coiled tubing, which are used for solving the problem that the service life of the coiled tubing is difficult to accurately evaluate because the accuracy of a wall thickness detection result cannot be ensured in the related technology. The method comprises the following steps: determining a first signal parameter value of a to-be-detected pipe section according to magnetic field change information of the to-be-detected pipe section of the coiled tubing; the magnetic field change information is obtained after the to-be-detected pipe section is magnetized through the detection equipment; determining a first wall thickness detection value corresponding to the first signal parameter value according to the correlation between the signal parameter value and the wall thickness detection value; determining a wall thickness calibration value of the to-be-detected pipe section according to a detection deviation value corresponding to the signal parameter value and the first wall thickness detection value; and determining the wall thickness value of the to-be-measured pipe section according to the wall thickness calibration value. According to the technical scheme, the accuracy of the wall thickness detection result of the coiled tubing is improved, so that the finally determined wall thickness value of the to-be-detected pipe section can accurately evaluate the life reduction condition of the coiled tubing.

Description

Technical Field

[0001] The present application relates to the technical field of nondestructive testing, and in particular to a method and system for detecting the wall thickness of a coiled tubing. Background Art

[0002] Coiled tubing is generally made of several sections of flexible pipes with a length of more than 100 meters welded by butt welding or bias welding, and the length is generally from several hundred meters to several thousand meters. With the increasing application of coiled tubing in oil and gas fields, such as gas lift, acidizing, drilling and grinding, downhole tool salvage, well washing, perforating, etc., the wall thickness of the coiled tubing is usually reduced due to acid corrosion and wear during the operation process. The reduction in the wall thickness of the coiled tubing can easily cause the coiled tubing to fail. Therefore, regular wall thickness testing of the coiled tubing to evaluate the service life of the coiled tubing is of great significance to reduce the occurrence of safety accidents.

[0003] The current wall thickness detection methods for coiled tubing mainly include ultrasonic testing, magnetic particle testing, etc. However, these methods do not take into account the possible errors in the detection process, so the accuracy of the wall thickness detection results cannot be ensured, making it difficult to accurately evaluate the service life of the coiled tubing. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a method and system for detecting the wall thickness of a coiled tubing, so as to solve the problem in the related art that the accuracy of the wall thickness detection result cannot be ensured, thereby making it difficult to accurately evaluate the service life of the coiled tubing.

[0005] To solve the above technical problems, the embodiments of the present application are implemented as follows: On the one hand, an embodiment of the present application provides a method for detecting the wall thickness of a coiled tubing, comprising: Determine the first signal parameter value of the tested pipe section of the coiled tubing according to the magnetic field change information of the tested pipe section; the magnetic field change information is obtained by magnetizing the tested pipe section through a detection device; Determining a first wall thickness detection value corresponding to the first signal parameter value according to a correlation between the signal parameter value and the wall thickness detection value; Determining a wall thickness calibration value of the pipe section to be tested according to a detection deviation value corresponding to the signal parameter value and the first wall thickness detection value; The wall thickness value of the pipe section to be measured is determined according to the wall thickness calibration value.

[0006] On the other hand, an embodiment of the present application provides a wall thickness detection system for a coiled tubing, comprising a coiled tubing, a detection device nested and connected to the coiled tubing, and a data processing device connected to the detection device; The detection device is used to magnetize the pipe section to be tested of the coiled tubing to obtain magnetic field change information of the magnetized pipe section to be tested; and determine the first signal parameter value of the pipe section to be tested according to the magnetic field change information; The data processing device is used to determine the first wall thickness detection value corresponding to the first signal parameter value based on the correlation between the signal parameter value and the wall thickness detection value; determine the wall thickness calibration value of the pipe section to be tested based on the detection deviation value corresponding to the signal parameter value and the first wall thickness detection value; and determine the wall thickness value of the pipe section to be tested based on the wall thickness calibration value.

[0007] On the other hand, the embodiment of the present application provides a wall thickness detection device for a coiled tubing, comprising: A first determination module is used to determine a first signal parameter value of the pipe section to be tested of the coiled tubing according to magnetic field change information of the pipe section to be tested; the magnetic field change information is obtained by magnetizing the pipe section to be tested by a detection device; A second determination module, configured to determine a first wall thickness detection value corresponding to the first signal parameter value according to a correlation between the signal parameter value and the wall thickness detection value; A third determination module, configured to determine a wall thickness calibration value of the pipe section to be tested according to a detection deviation value corresponding to the signal parameter value and the first wall thickness detection value; The fourth determination module is used to determine the wall thickness value of the pipe section to be measured according to the wall thickness calibration value.

[0008] On the other hand, an embodiment of the present application provides a wall thickness detection device for a continuous oil pipe, including a processor and a memory electrically connected to the processor, the memory storing a computer program, and the processor being used to call and execute the computer program from the memory to implement the above-mentioned wall thickness detection method for the continuous oil pipe.

[0009] On the other hand, an embodiment of the present application provides a storage medium for storing a computer program, wherein the computer program can be executed by a processor to implement the above-mentioned method for detecting the wall thickness of a coiled tubing.

[0010] By adopting the technical solution of the embodiment of the present application, the pipe section to be tested of the continuous oil pipe is magnetized by the detection equipment, so as to determine the first signal parameter value of the pipe section to be tested according to the magnetic field change information of the pipe section to be tested after magnetization, and determine the first wall thickness detection value corresponding to the first signal parameter value according to the correlation between the signal parameter value and the wall thickness detection value, determine the wall thickness calibration value of the pipe section to be tested according to the detection deviation value corresponding to the signal parameter value and the first wall thickness detection value, and then determine the wall thickness value of the pipe section to be tested according to the wall thickness calibration value, thereby realizing the automatic detection of the wall thickness of the continuous oil pipe. Moreover, in the process of automated detection, the first wall thickness detection value determined by the first signal parameter value of the pipe section to be tested can be calibrated according to the detection deviation value corresponding to the signal parameter value, and the wall thickness value of the pipe section to be tested can be determined according to the wall thickness calibration value obtained after calibration, thereby avoiding the influence of the detection error of the detection equipment on the wall thickness detection result, improving the accuracy of the wall thickness detection result of the coiled tubing, so that the wall thickness value of the pipe section to be tested that is finally determined can accurately evaluate the reduction in the service life of the coiled tubing, and provide scientific data support for analyzing the safety of coiled tubing operations and the utilization rate of the tubing. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0012] Figure 1 is a schematic flow chart of a method for detecting the wall thickness of a coiled tubing according to an embodiment of the present application; Figure 2 is a schematic block diagram of a coiled tubing wall thickness detection system according to an embodiment of the present application; Figure 3 is a schematic block diagram of a wall thickness detection system for a coiled tubing according to another embodiment of the present application; Figure 4 is a distribution diagram of a magnetic sensitive element according to an embodiment of the present application; Figure 5 is a schematic diagram of performing wall thickness detection on a plurality of first sample sections of a coiled tubing according to an embodiment of the present application; Figure 6 is a curve diagram showing the relationship between the second voltage value and the sample wall thickness value according to an embodiment of the present application; Figure 7 is a schematic diagram of performing wall thickness detection on a second sample section of a coiled tubing according to an embodiment of the present application; Figure 8is a schematic flow chart of a method for detecting the wall thickness of a coiled tubing according to another embodiment of the present application; Fig. 9 is a schematic block diagram of a wall thickness detection device for a coiled tubing according to an embodiment of the present application; Fig.10 It is a schematic diagram of the hardware structure of a coiled tubing wall thickness detection device according to an embodiment of the present application. DETAILED DESCRIPTION

[0013] The embodiments of the present application provide a method and system for detecting the wall thickness of a coiled tubing, so as to solve the problem in the related art that the accuracy of the wall thickness detection result cannot be ensured, thereby making it difficult to accurately evaluate the service life of the coiled tubing.

[0014] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application.

[0015] Figure 1 is a schematic flow chart of a method for detecting the wall thickness of a coiled tubing according to an embodiment of the present application, such as Figure 1 As shown, the method may include: S102, determining a first signal parameter value of the coiled tubing section to be tested according to magnetic field change information of the section to be tested.

[0016] The magnetic field change information is obtained after the detection device magnetizes the pipe section to be measured. Optionally, the detection device may include a magnetizing element and a magnetic sensitive element, the magnetizing element may magnetize the pipe section to be measured, the pipe section to be measured generates magnetic field change information after magnetization, and the magnetic sensitive element may receive the magnetic field change information of the pipe section to be measured, thereby outputting a corresponding first signal parameter value according to the magnetic field change information.

[0017] S104, determining a first wall thickness detection value corresponding to the first signal parameter value according to the correlation between the signal parameter value and the wall thickness detection value.

[0018] S106, determining a wall thickness calibration value of the pipe section to be tested according to the detection deviation value corresponding to the signal parameter value and the first wall thickness detection value.

[0019] The detection deviation value corresponding to the signal parameter value may be a detection deviation value of a magnetic sensitive element used to output the signal parameter value.

[0020] S108, determining the wall thickness value of the pipe section to be measured according to the wall thickness calibration value.

[0021] By adopting the technical solution of the embodiment of the present application, the pipe section to be tested of the continuous oil pipe is magnetized by the detection equipment, so as to determine the first signal parameter value of the pipe section to be tested according to the magnetic field change information of the pipe section to be tested after magnetization, and determine the first wall thickness detection value corresponding to the first signal parameter value according to the correlation between the signal parameter value and the wall thickness detection value, determine the wall thickness calibration value of the pipe section to be tested according to the detection deviation value corresponding to the signal parameter value and the first wall thickness detection value, and then determine the wall thickness value of the pipe section to be tested according to the wall thickness calibration value, thereby realizing the automatic detection of the wall thickness of the continuous oil pipe. Moreover, in the process of automated detection, the first wall thickness detection value determined by the first signal parameter value of the pipe section to be tested can be calibrated according to the detection deviation value corresponding to the signal parameter value, and the wall thickness value of the pipe section to be tested can be determined according to the wall thickness calibration value obtained after calibration, thereby avoiding the influence of the detection error of the detection equipment on the wall thickness detection result, improving the accuracy of the wall thickness detection result of the coiled tubing, so that the wall thickness value of the pipe section to be tested that is finally determined can accurately evaluate the reduction in the service life of the coiled tubing, and provide scientific data support for analyzing the safety of coiled tubing operations and the utilization rate of the tubing.

[0022] In one embodiment, Figure 1 The method can be applied to Figure 2 For the coiled tubing wall thickness detection system shown, please refer to Figure 2 The wall thickness detection system of the coiled tubing may include a coiled tubing 10 , a detection device 20 nested and connected to the coiled tubing 10 , and a data processing device 30 connected to the detection device 20 .

[0023] The detection device 20 is used to magnetize the pipe section to be tested of the coiled tubing 10, obtain the magnetic field change information of the magnetized pipe section to be tested, and thereby determine the first signal parameter value of the pipe section to be tested according to the magnetic field change information.

[0024] The data processing device 30 is used to determine the first wall thickness detection value corresponding to the first signal parameter value according to the correlation between the signal parameter value and the wall thickness detection value, thereby determining the wall thickness calibration value of the pipe section to be measured according to the detection deviation value corresponding to the signal parameter value and the first wall thickness detection value, and then determining the wall thickness value of the pipe section to be measured according to the wall thickness calibration value.

[0025] In one embodiment, Figure 3As shown, after the detection device 20 magnetizes the pipe section to be tested of the coiled tubing 10, a magnetic field 40 can be established on the surface of the pipe section to be tested. The detection device 20 may include a magnetic sensor 210, which may be used to receive magnetic field change information of the magnetic field 40, thereby outputting a corresponding voltage value. The magnetic field change information may be magnetic induction intensity. In addition, the data processing device 30 may include a data acquisition box 310 and a data acquisition computer 320 connected to each other, and the data acquisition box 310 is connected to the detection device 20.

[0026] In this embodiment, the data acquisition box 310 is used to obtain the first signal parameter value of the pipe section to be tested from the detection device 20. The data acquisition computer 320 is used to determine the first wall thickness detection value corresponding to the first signal parameter value according to the correlation between the signal parameter value and the wall thickness detection value, thereby determining the wall thickness calibration value of the pipe section to be tested according to the detection deviation value corresponding to the signal parameter value and the first wall thickness detection value, and then determining the wall thickness value of the pipe section to be tested according to the wall thickness calibration value.

[0027] In one embodiment, Figure 4 As shown, the magnetic sensitive element 210 is mounted on the surface of the detection device 20 facing the coiled tubing 10, and the detection device 20 is not shown in FIG. Figure 4 In addition, the magnetic sensing elements 210 are evenly distributed in the circumferential direction of the cross section of the coiled tubing 10. Optionally, the number of the magnetic sensing elements 210 may be n, where n is a positive integer greater than or equal to 1.

[0028] In one embodiment, determining the first signal parameter value of the pipe section to be tested according to the magnetic field change information of the pipe section to be tested of the coiled tubing (i.e., S102) can be performed as follows: receiving the magnetic field change information of the pipe section to be tested of the coiled tubing through a magnetic sensitive element, and outputting a first voltage value corresponding to the pipe section to be tested according to the magnetic field change information.

[0029] In this embodiment, the detection device includes a magnetic sensor, and the first signal parameter value is a first voltage value. When the number of magnetic sensors is n, during the wall thickness detection process of the coiled tubing, the magnetic field change information at different positions of the tested pipe section of the coiled tubing can be received by the n magnetic sensors respectively, so as to output the first voltage value V1 corresponding to the tested pipe section according to the magnetic field change information. 第一 、V2 第一 、V3 第一 、…Vn 第一 .

[0030] In this embodiment, during the wall thickness detection process of the coiled tubing, the magnetic field change information at different positions of the pipe section to be tested is detected by using a magnetic sensitive element to output corresponding voltage values, thereby providing a data basis for determining the wall thickness value of the pipe section to be tested.

[0031] In one embodiment, before determining the first wall thickness detection value corresponding to the first signal parameter value according to the correlation between the signal parameter value and the wall thickness detection value (ie, S104), the following steps A1 to A3 may be performed: Step A1, determining sample wall thickness values ​​of a plurality of first sample sections of the coiled tubing.

[0032] Optionally, the sample wall thickness value may be a wall thickness value measured by performing wall thickness detection on a plurality of first sample tube segments using other measurement means in advance.

[0033] For example, Figure 5 As shown, sample wall thickness values ​​WT1, WT2, WT3, ... WTm of m first sample pipe sections 510 of the coiled tubing can be determined, wherein the sample wall thickness values ​​of the m first sample pipe sections 510 are the same or different.

[0034] Step A2: for each first sample tube segment, obtain the magnetic field change information of the first sample tube segment, and determine the second signal parameter value of the first sample tube segment according to the magnetic field change information of the first sample tube segment.

[0035] The second signal parameter value may be a second voltage value. For example, Figure 5 As shown, for each first sample tube segment, the detection device 20 can be moved to the vicinity of the middle position of the first sample tube segment, so as to obtain the magnetic field change information at different positions of the first sample tube segment through the n magnetic sensitive elements on the detection device, and output the second voltage value V1 corresponding to the first sample tube segment according to the magnetic field change information. 第二 、V2 第二 、V3 第二 、…Vn 第二 .

[0036] Step A3: determining the correlation between the signal parameter value and the wall thickness detection value according to the corresponding relationship between the second signal parameter value and the sample wall thickness value of each first sample tube segment.

[0037] Optionally, step A3 may be performed as follows: step A31-step A32: Step A31, fitting a relationship curve between the second signal parameter value of each first sample tube segment and the sample wall thickness value.

[0038] Wherein, when the second signal parameter value is the second voltage value output by the magnetic sensitive element and the detection device includes n magnetic sensitive elements, in this step, a relationship curve between the second voltage value output by the magnetic sensitive element and the sample wall thickness value can be fitted for each magnetic sensitive element.

[0039] Continue to use Figure 5For example, the m second voltage values ​​V1 output by the first magnetic sensitive element on the detection device may be 第二 , and the sample wall thickness values ​​WT1, WT2, WT3, ... WTm of the m first sample tube segments 510, fit the relationship curve between the m second voltage values ​​output by the first magnetic sensor and the m sample wall thickness values. Similarly, for the second to nth magnetic sensors on the detection device, the relationship curve between the second voltage values ​​output by the magnetic sensors and the sample wall thickness values ​​can be fitted in the same way.

[0040] Figure 6 The figure schematically shows the relationship curve between the second voltage value output by one of the n magnetic sensitive elements and the sample wall thickness value, with the m second voltage values ​​output by the magnetic sensitive element as the horizontal axis and the sample wall thickness values ​​of the m first sample tube segments as the vertical axis.

[0041] Step A32, determining the correlation between the signal parameter value and the wall thickness detection value according to the relationship curve.

[0042] The functional relationship between the second voltage value output by the magnetic sensitive element and the wall thickness value of the sample can be determined according to the relationship curve, so that the functional relationship can be determined as the correlation between the voltage value and the wall thickness detection value.

[0043] Continue to use Figure 5 In the example of FIG. 1 , the functional relationship y1=f(x1) between the second voltage value output by the first magnetic sensor and the wall thickness value of the sample can be determined according to the relationship curve between the m second voltage values ​​output by the first magnetic sensor and the m sample wall thickness values. 1 ). Among them, x 1 represents the voltage value output by the first magnetic sensor, and y1 represents the wall thickness detection value corresponding to the voltage value output by the first magnetic sensor. Similarly, for the second to nth magnetic sensors on the detection device, the functional relationship between the second voltage value output by the magnetic sensor and the sample wall thickness value can be determined in the same way: y2=f(x 2 )、y3=f(x 3 ),…yn=f(x n ). 2 、x 3 ,…x n They respectively represent the voltage value output by the second magnetic sensitive element, the voltage value output by the third magnetic sensitive element to the voltage value output by the nth magnetic sensitive element, and y2, y3, ...yn respectively represent the wall thickness detection value corresponding to the voltage value output by the second magnetic sensitive element, the wall thickness detection value corresponding to the voltage value output by the third magnetic sensitive element to the wall thickness detection value corresponding to the voltage value output by the nth magnetic sensitive element.

[0044] In this embodiment, by using a sample pipe section with a known wall thickness value on the coiled tubing, the correlation between the signal parameter value output by the detection device and the wall thickness detection value is determined, which provides a conversion basis for the wall thickness detection of the coiled tubing, so that according to the signal parameter value output by the detection device in real time, the corresponding wall thickness detection value can be determined efficiently and accurately, providing a data basis for automated wall thickness detection of the coiled tubing.

[0045] In one embodiment, following the example in step A1-step A3, the first wall thickness detection value corresponding to the first signal parameter value is determined (i.e., S104) based on the correlation between the signal parameter value and the wall thickness detection value. This can be performed as follows: substituting the first voltage value output by the magnetic sensitive element into the functional relationship corresponding to the magnetic sensitive element to calculate the first wall thickness detection value corresponding to the first voltage value.

[0046] Among them, the first voltage value V1 output by the n magnetic sensitive elements 第一 、V2 第一 、V3 第一 、…Vn 第一 , we can substitute the corresponding magnetic sensitive element into the functional relationship y1=f(x 1 )、y2=f(x 2 )、y3=f(x 3 ),…yn=f(x n ), to calculate the n first wall thickness detection values ​​WT1 corresponding to the n first voltage values 检测 、WT2 检测 、WT3 检测 、…WTn 检测 .

[0047] In one embodiment, before determining the wall thickness calibration value of the pipe section to be tested (ie, S106) according to the detection deviation value and the first wall thickness detection value corresponding to the signal parameter value, the following steps B1 to B4 may be performed: Step B1, determining a sample wall thickness value of a second sample pipe section of the coiled tubing.

[0048] Optionally, the sample wall thickness value may be a wall thickness value measured by using other measurement methods to test the wall thickness of the second sample pipe section in advance. The second sample pipe section may be a pipe section selected at the wall thickness testing site of the coiled tubing for calibrating the detection accuracy of the detection equipment.

[0049] Alternatively, if Figure 7 As shown, a position 710 for field calibration may be marked in the second sample pipe section on the tested coiled tubing 10 , and the sample wall thickness value WT0 at the position 710 may be measured using other measurement tools.

[0050] Step B2, obtaining the magnetic field change information of the second sample tube segment, and determining the third signal parameter value of the second sample tube segment according to the magnetic field change information of the second sample tube segment.

[0051] The third signal parameter value may be a third voltage value. For example, Figure 7 As shown, for position 710, the detection device 20 can be moved to the position, so as to obtain the magnetic field change information at the position through the n magnetic sensitive elements on the detection device, and output the corresponding third voltage value V1 according to the magnetic field change information. 第三 、V2 第三 、V3 第三 、…Vn 第三 .

[0052] Step B3, determining the second wall thickness detection value corresponding to the third signal parameter value according to the correlation between the signal parameter value and the wall thickness detection value.

[0053] Following the example in step A1 to step A3, this step may be performed as follows: substituting the third voltage value output by the magnetic sensitive element into the functional relationship corresponding to the magnetic sensitive element to calculate the second wall thickness detection value corresponding to the third voltage value.

[0054] Among them, the third voltage value V1 output by the n magnetic sensitive elements is 第三 、V2 第三 、V3 第三 、…Vn 第三 , we can substitute the corresponding magnetic sensitive element into the functional relationship y1=f(x 1 )、y2=f(x 2 )、y3=f(x 3 ),…yn=f(x n ), to calculate the n second wall thickness detection values ​​WT1 corresponding to the n third voltage values 待校准 、WT2 待校准 、WT3 待校准 、…WTn 待校准 .

[0055] Step B4, determining a detection deviation value corresponding to the signal parameter value according to the sample wall thickness value of the second sample tube segment and the second wall thickness detection value.

[0056] The detection deviation value corresponding to the signal parameter value may be a detection deviation value corresponding to a magnetic sensitive element used to output the signal parameter value.

[0057] Optionally, the detection deviation value WT1 corresponding to the magnetic sensitive element can be obtained by calculating the difference between the second wall thickness detection value of the second sample tube segment and the sample wall thickness value. 偏差 、WT2 偏差 、WT3 偏差、…WTn 偏差 .

[0058] Specifically, the calculation method of the detection deviation value is shown in formula (1): WT1 偏差 =WT1 待校准 -WT0, WT2 偏差 =WT2 待校准 -WT0, WT3 偏差 =WT3 待校准 -WT0, … Wtn 偏差 =WTn 待校准 -WT0. (1) In this embodiment, by using a sample pipe section selected on the coiled tubing for calibrating the detection accuracy of the detection equipment, the detection deviation value between the wall thickness detection value detected by the detection equipment and the actual wall thickness value of the sample pipe section is determined, which provides a calibration basis for the wall thickness detection of the coiled tubing, so that in the automated detection process, the first wall thickness detection value determined by the first signal parameter value of the pipe section to be tested can be calibrated, thereby avoiding the influence of the detection error of the detection equipment on the wall thickness detection result, and improving the accuracy of the wall thickness detection result of the coiled tubing.

[0059] In one embodiment, following the example in step B1 to step B4, the wall thickness calibration value of the pipe section to be tested (i.e., S106) is determined according to the detection deviation value and the first wall thickness detection value corresponding to the signal parameter value. The wall thickness calibration value WT1 of the pipe section to be tested is obtained by calculating the difference between the first wall thickness detection value and the detection deviation value corresponding to the signal parameter value. 校准 、WT2 校准 、WT3 校准 、…WTn 校准 .

[0060] Specifically, the calculation method of the wall thickness calibration value is shown in formula (2): WT1 校准 =WT1 检测 -WT1 偏差 , WT2 校准 =WT2 检测 -WT2 偏差 , WT3 校准 =WT3 检测 -WT3 偏差 , … Wtn 校准 =WTn 检测 -WTn偏差 . (2) In one embodiment, the wall thickness calibration values ​​include multiple values. Determining the wall thickness value of the pipe section to be measured according to the wall thickness calibration values ​​(ie S108) can be performed by: determining the maximum value among the multiple wall thickness calibration values, and determining the maximum value as the wall thickness value of the pipe section to be measured.

[0061] Using the examples in steps B1 to B4 and combining them with formula (2), the maximum value WT among the n wall thickness calibration values ​​can be determined: max , and WT max Determine the wall thickness value of the pipe section to be tested.

[0062] Alternatively, determining the wall thickness value of the pipe section to be measured according to the wall thickness calibration value (ie S108) may be performed by determining a minimum value among a plurality of wall thickness calibration values, and determining the minimum value as the wall thickness value of the pipe section to be measured.

[0063] Among them, the minimum value WT among the n wall thickness calibration values ​​can be determined min , and WT min Determine the wall thickness value of the pipe section to be tested.

[0064] Alternatively, determining the wall thickness value of the pipe section to be measured according to the wall thickness calibration value (ie S108) may be performed by calculating an average value of a plurality of wall thickness calibration values ​​and determining the average value as the wall thickness value of the pipe section to be measured.

[0065] Among them, the average value WT of n wall thickness calibration values ​​can be determined avg , and WT avg Determine the wall thickness value of the pipe section to be tested.

[0066] In this embodiment, when there are multiple wall thickness calibration values ​​corresponding to the pipe section to be tested, multiple methods for determining the wall thickness value of the pipe section to be tested are provided, which is conducive to adapting to more application scenarios and provides a reference basis for automatically performing wall thickness detection of continuous oil pipes.

[0067] Figure 8 FIG. 1 is a schematic flow chart of a method for detecting the wall thickness of a coiled tubing according to another embodiment of the present application. In this embodiment, the method for detecting the wall thickness of a coiled tubing can be applied to Figures 2 to 4 The wall thickness detection system of the coiled tubing shown in the figure includes a plurality of magnetic sensitive elements. Figure 8 As shown, the method may include: S801, for each magnetic sensor, receiving magnetic field change information of a pipe section to be tested of the coiled tubing through the magnetic sensor.

[0068] The magnetic field change information is obtained by magnetizing the pipe section to be tested through the detection equipment.

[0069] S802, outputting a first voltage value corresponding to the pipe section to be tested according to the magnetic field change information.

[0070] S803, determining a first wall thickness detection value corresponding to the first voltage value according to the correlation between the voltage value and the wall thickness detection value.

[0071] The steps for determining the correlation between the voltage value and the wall thickness detection value may refer to the above steps A1 to A3, which will not be described in detail here.

[0072] S804, determining a wall thickness calibration value of the pipe section to be tested according to the detection deviation value corresponding to the magnetic sensitive element and the first wall thickness detection value.

[0073] Among them, the steps for determining the detection deviation value corresponding to the magnetic sensitive element can refer to the above steps B1 to B4, which will not be repeated here.

[0074] S805, determining the wall thickness value of the pipe section to be measured according to the multiple wall thickness calibration values ​​of the pipe section to be measured.

[0075] The specific process of S801-S805 has been described in detail in the above embodiment and will not be repeated here.

[0076] By adopting the technical solution of the embodiment of the present application, the pipe section to be tested of the continuous oil tubing is magnetized by the detection equipment, so as to determine the first voltage value of the pipe section to be tested according to the magnetic field change information of the pipe section to be tested after magnetization, and determine the first wall thickness detection value corresponding to the first voltage value according to the correlation between the voltage value and the wall thickness detection value, determine the wall thickness calibration value of the pipe section to be tested according to the detection deviation value corresponding to the magnetic sensitive element and the first wall thickness detection value, and then determine the wall thickness value of the pipe section to be tested according to the multiple wall thickness calibration values ​​of the pipe section to be tested, thereby realizing the automatic detection of the wall thickness of the continuous oil tubing. Moreover, in the process of automated detection, the first wall thickness detection value determined by the first voltage value of the pipe section to be tested can be calibrated according to the detection deviation value corresponding to the voltage value, and the wall thickness value of the pipe section to be tested can be determined according to the wall thickness calibration value obtained after calibration, thereby avoiding the influence of the detection error of the detection equipment on the wall thickness detection result, improving the accuracy of the wall thickness detection result of the coiled tubing, so that the wall thickness value of the pipe section to be tested that is finally determined can accurately evaluate the reduction in the service life of the coiled tubing, and provide scientific data support for analyzing the safety of coiled tubing operations and the utilization rate of the tubing.

[0077] The above is the wall thickness detection method of the coiled tubing provided in the embodiment of the present application. Figure 2 The wall thickness detection system of the coiled tubing shown is described in detail.

[0078] like Figure 2As shown, the wall thickness detection system of the coiled tubing may include a coiled tubing 10, a detection device 20 nested and connected to the coiled tubing 10, and a data processing device 30 connected to the detection device 20; wherein, The detection device 20 is used to magnetize the pipe section to be tested of the coiled tubing 10, obtain the magnetic field change information of the magnetized pipe section to be tested, and determine the first signal parameter value of the pipe section to be tested according to the magnetic field change information; The data processing device 30 is used to determine the first wall thickness detection value corresponding to the first signal parameter value according to the correlation between the signal parameter value and the wall thickness detection value; determine the wall thickness calibration value of the pipe section to be measured according to the detection deviation value corresponding to the signal parameter value and the first wall thickness detection value; and determine the wall thickness value of the pipe section to be measured according to the wall thickness calibration value.

[0079] In one embodiment, the data processing device 30 is further used to determine sample wall thickness values ​​of a plurality of first sample pipe sections of the coiled tubing 10; The detection device 20 is further used to obtain magnetic field change information of each first sample tube segment, and determine the second signal parameter value of the first sample tube segment according to the magnetic field change information of the first sample tube segment; The data processing device 30 is further used to determine the correlation between the signal parameter value and the wall thickness detection value according to the corresponding relationship between the second signal parameter value and the sample wall thickness value of each first sample tube segment.

[0080] In one embodiment, the data processing device 30 is further used to determine a sample wall thickness value of a second sample pipe section of the coiled tubing 10; The detection device 20 is further used to obtain the magnetic field change information of the second sample tube segment, and determine the third signal parameter value of the second sample tube segment according to the magnetic field change information of the second sample tube segment; The data processing device 30 is also used to determine the second wall thickness detection value corresponding to the third signal parameter value according to the correlation between the signal parameter value and the wall thickness detection value; and determine the detection deviation value corresponding to the signal parameter value according to the sample wall thickness value of the second sample pipe segment and the second wall thickness detection value.

[0081] In one embodiment, the wall thickness calibration value includes a plurality of values; the data processing device 30 is specifically used for: Determine the maximum value among multiple wall thickness calibration values, and determine the maximum value as the wall thickness value of the pipe section to be measured; or, Determine the minimum value among multiple wall thickness calibration values, and determine the minimum value as the wall thickness value of the pipe section to be measured; or, Calculate the average of multiple wall thickness calibration values, and determine the average as the wall thickness value of the pipe section to be tested.

[0082] In one embodiment, Figure 3As shown, the detection device 20 includes a magnetic sensitive element 210; the first signal parameter value is a first voltage value; The detection device 20 is specifically used for: Receive the magnetic field change information of the pipe section to be tested of the coiled tubing 10 through the magnetic sensitive element 210; According to the magnetic field change information, a first voltage value corresponding to the pipe section to be tested is output.

[0083] By adopting the technical solution of the embodiment of the present application, the pipe section to be tested of the continuous oil pipe is magnetized by the detection equipment, so as to determine the first signal parameter value of the pipe section to be tested according to the magnetic field change information of the pipe section to be tested after magnetization, and determine the first wall thickness detection value corresponding to the first signal parameter value according to the correlation between the signal parameter value and the wall thickness detection value, determine the wall thickness calibration value of the pipe section to be tested according to the detection deviation value corresponding to the signal parameter value and the first wall thickness detection value, and then determine the wall thickness value of the pipe section to be tested according to the wall thickness calibration value, thereby realizing the automatic detection of the wall thickness of the continuous oil pipe. Moreover, in the process of automated detection, the first wall thickness detection value determined by the first signal parameter value of the pipe section to be tested can be calibrated according to the detection deviation value corresponding to the signal parameter value, and the wall thickness value of the pipe section to be tested can be determined according to the wall thickness calibration value obtained after calibration, thereby avoiding the influence of the detection error of the detection equipment on the wall thickness detection result, improving the accuracy of the wall thickness detection result of the coiled tubing, so that the wall thickness value of the pipe section to be tested that is finally determined can accurately evaluate the reduction in the service life of the coiled tubing, and provide scientific data support for analyzing the safety of coiled tubing operations and the utilization rate of the tubing.

[0084] In summary, specific embodiments of the present subject matter have been described. Other embodiments are within the scope of the appended claims. In some cases, the actions recorded in the claims can be performed in a different order and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or sequential order shown to achieve the desired results. In some embodiments, multitasking and parallel processing can be advantageous.

[0085] The above is a method for detecting the wall thickness of a coiled tubing provided in an embodiment of the present application. Based on the same idea, an embodiment of the present application also provides a device for detecting the wall thickness of a coiled tubing.

[0086] Fig. 9 is a schematic structural diagram of a wall thickness detection device for a coiled tubing according to an embodiment of the present application, such as Fig. 9 As shown, the wall thickness detection device of the coiled tubing may include: The first determination module 910 is used to determine the first signal parameter value of the tested pipe section according to the magnetic field change information of the tested pipe section of the coiled tubing; the magnetic field change information is obtained by magnetizing the tested pipe section through the detection equipment; A second determination module 920, configured to determine a first wall thickness detection value corresponding to a first signal parameter value according to a correlation between the signal parameter value and the wall thickness detection value; A third determination module 930 is used to determine a wall thickness calibration value of the pipe section to be tested according to the detection deviation value corresponding to the signal parameter value and the first wall thickness detection value; The fourth determination module 940 is used to determine the wall thickness value of the pipe section to be measured according to the wall thickness calibration value.

[0087] In one embodiment, the wall thickness detection device of the coiled tubing further includes: a fifth determination module, configured to determine sample wall thickness values ​​of a plurality of first sample pipe sections of the coiled tubing before determining a first wall thickness detection value corresponding to the first signal parameter value according to a correlation between the signal parameter value and the wall thickness detection value; A first acquisition and determination module, configured to acquire magnetic field change information of each first sample tube segment, and determine a second signal parameter value of the first sample tube segment according to the magnetic field change information of the first sample tube segment; The sixth determination module is used to determine the correlation between the signal parameter value and the wall thickness detection value according to the corresponding relationship between the second signal parameter value and the sample wall thickness value of each first sample tube segment.

[0088] In one embodiment, the wall thickness detection device of the coiled tubing further includes: a seventh determination module, for determining a sample wall thickness value of a second sample pipe section of the coiled tubing before determining a wall thickness calibration value of the pipe section to be tested according to the detection deviation value corresponding to the signal parameter value and the first wall thickness detection value; A second acquisition and determination module, used to acquire magnetic field change information of the second sample tube segment, and determine a third signal parameter value of the second sample tube segment according to the magnetic field change information of the second sample tube segment; an eighth determination module, configured to determine a second wall thickness detection value corresponding to the third signal parameter value according to a correlation between the signal parameter value and the wall thickness detection value; The ninth determination module is used to determine the detection deviation value corresponding to the signal parameter value according to the sample wall thickness value of the second sample tube segment and the second wall thickness detection value.

[0089] In one embodiment, the wall thickness calibration value includes multiple values; the fourth determination module 940 includes: A first determining unit is used to determine a maximum value among a plurality of wall thickness calibration values, and determine the maximum value as the wall thickness value of the pipe section to be measured; or The second determination unit is used to determine the minimum value among the multiple wall thickness calibration values, and determine the minimum value as the wall thickness value of the pipe section to be measured; or The third determination unit is used to calculate an average value of a plurality of wall thickness calibration values, and determine the average value as the wall thickness value of the pipe section to be measured.

[0090] In one embodiment, the detection device includes a magnetic sensitive element; the first signal parameter value is a first voltage value; The first determination module 910 includes: A receiving unit, used for receiving magnetic field change information of the pipe section to be tested of the coiled tubing through a magnetic sensitive element; The output unit is used to output a first voltage value corresponding to the pipe section to be tested according to the magnetic field change information.

[0091] By adopting the technical solution of the embodiment of the present application, the pipe section to be tested of the continuous oil pipe is magnetized by the detection equipment, so as to determine the first signal parameter value of the pipe section to be tested according to the magnetic field change information of the pipe section to be tested after magnetization, and determine the first wall thickness detection value corresponding to the first signal parameter value according to the correlation between the signal parameter value and the wall thickness detection value, determine the wall thickness calibration value of the pipe section to be tested according to the detection deviation value corresponding to the signal parameter value and the first wall thickness detection value, and then determine the wall thickness value of the pipe section to be tested according to the wall thickness calibration value, thereby realizing the automatic detection of the wall thickness of the continuous oil pipe. Moreover, in the process of automated detection, the first wall thickness detection value determined by the first signal parameter value of the pipe section to be tested can be calibrated according to the detection deviation value corresponding to the signal parameter value, and the wall thickness value of the pipe section to be tested can be determined according to the wall thickness calibration value obtained after calibration, thereby avoiding the influence of the detection error of the detection equipment on the wall thickness detection result, improving the accuracy of the wall thickness detection result of the coiled tubing, so that the wall thickness value of the pipe section to be tested that is finally determined can accurately evaluate the reduction in the service life of the coiled tubing, and provide scientific data support for analyzing the safety of coiled tubing operations and the utilization rate of the tubing.

[0092] Those skilled in the art should understand that Fig. 9 The coiled tubing wall thickness detection device can be used to implement the coiled tubing wall thickness detection method described above, and the detailed description thereof should be similar to that described in the method section above, and will not be further described here to avoid redundancy.

[0093] Based on the same idea, the embodiment of the present application also provides a wall thickness detection device for a coiled tubing, such as Fig.10As shown. The wall thickness detection device of the continuous tubing may have relatively large differences due to different configurations or performances, and may include one or more processors 1001 and a memory 1002, and the memory 1002 may store one or more storage applications or data. Among them, the memory 1002 may be a temporary storage or a permanent storage. The application stored in the memory 1002 may include one or more modules (not shown in the figure), and each module may include a series of computer executable instructions in the wall thickness detection device of the continuous tubing. Furthermore, the processor 1001 may be configured to communicate with the memory 1002, and execute a series of computer executable instructions in the memory 1002 on the wall thickness detection device of the continuous tubing. The wall thickness detection device of the continuous tubing may also include one or more power supplies 1003, one or more wired or wireless network interfaces 1004, and one or more input and output interfaces 1005.

[0094] Specifically, in this embodiment, the wall thickness detection device of the coiled tubing includes a memory and one or more programs, wherein the one or more programs are stored in the memory, and the one or more programs may include one or more modules, and each module may include a series of computer executable instructions for the wall thickness detection device of the coiled tubing, and the one or more programs are configured to be executed by one or more processors, including computer executable instructions for performing the following: Determine the first signal parameter value of the tested pipe section according to the magnetic field change information of the tested pipe section of the coiled tubing; the magnetic field change information is obtained by magnetizing the tested pipe section through the detection equipment; Determine a first wall thickness detection value corresponding to the first signal parameter value according to a correlation between the signal parameter value and the wall thickness detection value; Determine a wall thickness calibration value of the pipe section to be tested according to the detection deviation value corresponding to the signal parameter value and the first wall thickness detection value; According to the wall thickness calibration value, determine the wall thickness value of the pipe section to be tested.

[0095] By adopting the technical solution of the embodiment of the present application, the pipe section to be tested of the continuous oil pipe is magnetized by the detection equipment, so as to determine the first signal parameter value of the pipe section to be tested according to the magnetic field change information of the pipe section to be tested after magnetization, and determine the first wall thickness detection value corresponding to the first signal parameter value according to the correlation between the signal parameter value and the wall thickness detection value, determine the wall thickness calibration value of the pipe section to be tested according to the detection deviation value corresponding to the signal parameter value and the first wall thickness detection value, and then determine the wall thickness value of the pipe section to be tested according to the wall thickness calibration value, thereby realizing the automatic detection of the wall thickness of the continuous oil pipe. Moreover, in the process of automated detection, the first wall thickness detection value determined by the first signal parameter value of the pipe section to be tested can be calibrated according to the detection deviation value corresponding to the signal parameter value, and the wall thickness value of the pipe section to be tested can be determined according to the wall thickness calibration value obtained after calibration, thereby avoiding the influence of the detection error of the detection equipment on the wall thickness detection result, improving the accuracy of the wall thickness detection result of the coiled tubing, so that the wall thickness value of the pipe section to be tested that is finally determined can accurately evaluate the reduction in the service life of the coiled tubing, and provide scientific data support for analyzing the safety of coiled tubing operations and the utilization rate of the tubing.

[0096] The embodiment of the present application also proposes a storage medium, which stores one or more computer programs, and the one or more computer programs include instructions. When the instructions are executed by an electronic device including multiple application programs, the electronic device can execute each process of the above-mentioned embodiment of the continuous oil pipe wall thickness detection method and achieve the same technical effect. To avoid repetition, they are not repeated here.

[0097] The systems, devices, modules or units described in the above embodiments may be implemented by computer chips or entities, or by products with certain functions. A typical implementation device is a computer. Specifically, the computer may be, for example, a personal computer, a laptop computer, a cellular phone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or a combination of any of these devices.

[0098] For the convenience of description, the above device is described in various units according to their functions. Of course, when implementing the present application, the functions of each unit can be implemented in the same or multiple software and / or hardware.

[0099] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0100] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0101] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0102] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0103] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0104] Memory may include non-permanent storage in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. Memory is an example of a computer-readable medium.

[0105] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined in this article, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0106] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0107] The present application may be described in the general context of computer-executable instructions executed by a computer, such as program modules. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform specific tasks or implement specific abstract data types. The present application may also be practiced in distributed computing environments where tasks are performed by remote processing devices connected through a communication network. In a distributed computing environment, program modules may be located in local and remote computer storage media, including storage devices.

[0108] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0109] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A method for detecting the wall thickness of a coiled tubing, characterized in that: include: Determining a first signal parameter value of the pipe section to be tested according to magnetic field change information of the pipe section to be tested of the coiled tubing; The magnetic field change information is obtained by magnetizing the pipe section to be tested through a detection device; Determining a first wall thickness detection value corresponding to the first signal parameter value according to a correlation between the signal parameter value and the wall thickness detection value; Determining a wall thickness calibration value of the pipe section to be tested according to a detection deviation value corresponding to the signal parameter value and the first wall thickness detection value; The wall thickness value of the pipe section to be measured is determined according to the wall thickness calibration value.

2. The method according to claim 1, characterized in that Before determining the first wall thickness detection value corresponding to the first signal parameter value according to the correlation between the signal parameter value and the wall thickness detection value, the method further includes: determining sample wall thickness values ​​of a plurality of first sample sections of the coiled tubing; For each of the first sample tube segments, obtaining magnetic field change information of the first sample tube segment, and determining a second signal parameter value of the first sample tube segment according to the magnetic field change information of the first sample tube segment; The correlation between the signal parameter value and the wall thickness detection value is determined according to the corresponding relationship between the second signal parameter value and the sample wall thickness value of each of the first sample tube segments.

3. The method according to claim 1, characterized in that Before determining the wall thickness calibration value of the pipe section to be tested according to the detection deviation value corresponding to the signal parameter value and the first wall thickness detection value, the method further includes: determining a sample wall thickness value of a second sample section of the coiled tubing; Acquiring magnetic field change information of the second sample tube segment, and determining a third signal parameter value of the second sample tube segment according to the magnetic field change information of the second sample tube segment; Determining a second wall thickness detection value corresponding to the third signal parameter value according to the correlation between the signal parameter value and the wall thickness detection value; The detection deviation value corresponding to the signal parameter value is determined according to the sample wall thickness value of the second sample tube segment and the second wall thickness detection value.

4. The method according to claim 1, characterized in that: The wall thickness calibration values ​​include a plurality of values; and determining the wall thickness value of the pipe section to be measured according to the wall thickness calibration values ​​includes: Determine a maximum value among the plurality of wall thickness calibration values, and determine the maximum value as the wall thickness value of the pipe section to be measured; or, Determine a minimum value among the plurality of wall thickness calibration values, and determine the minimum value as the wall thickness value of the pipe section to be measured; or, An average value of the plurality of wall thickness calibration values ​​is calculated, and the average value is determined as the wall thickness value of the pipe section to be measured.

5. The method according to claim 1, characterized in that: The detection device includes a magnetic sensitive element; the first signal parameter value is a first voltage value; The step of determining the first signal parameter value of the pipe section to be tested according to the magnetic field change information of the pipe section to be tested of the coiled tubing comprises: receiving magnetic field change information of the pipe section to be tested of the coiled tubing through the magnetic sensitive element; The first voltage value corresponding to the pipe section to be tested is output according to the magnetic field change information.

6. A wall thickness detection system for a coiled tubing, characterized in that: It includes a coiled tubing, a detection device nested and connected to the coiled tubing, and a data processing device connected to the detection device; The detection device is used to magnetize the pipe section to be tested of the coiled tubing to obtain magnetic field change information of the magnetized pipe section to be tested; and determine the first signal parameter value of the pipe section to be tested according to the magnetic field change information; The data processing device is used to determine the first wall thickness detection value corresponding to the first signal parameter value based on the correlation between the signal parameter value and the wall thickness detection value; determine the wall thickness calibration value of the pipe section to be tested based on the detection deviation value corresponding to the signal parameter value and the first wall thickness detection value; and determine the wall thickness value of the pipe section to be tested based on the wall thickness calibration value.

7. The system according to claim 6, characterized in that The data processing device is also used to determine sample wall thickness values ​​of a plurality of first sample pipe sections of the coiled tubing; The detection device is further used to obtain magnetic field change information of each first sample tube segment, and determine a second signal parameter value of the first sample tube segment according to the magnetic field change information of the first sample tube segment; The data processing device is further used to determine the correlation between the signal parameter value and the wall thickness detection value according to the corresponding relationship between the second signal parameter value and the sample wall thickness value of each of the first sample tube segments.

8. A wall thickness detection device for a coiled tubing, characterized in that: include: A first determination module, configured to determine a first signal parameter value of the pipe section to be tested according to magnetic field change information of the pipe section to be tested of the coiled tubing; The magnetic field change information is obtained by magnetizing the pipe section to be tested through a detection device; A second determination module, configured to determine a first wall thickness detection value corresponding to the first signal parameter value according to a correlation between the signal parameter value and the wall thickness detection value; A third determination module, configured to determine a wall thickness calibration value of the pipe section to be tested according to a detection deviation value corresponding to a signal parameter value and the first wall thickness detection value; The fourth determination module is used to determine the wall thickness value of the pipe section to be measured according to the wall thickness calibration value.

9. A coiled tubing wall thickness detection device, characterized in that: The invention comprises a processor and a memory electrically connected to the processor, wherein the memory stores a computer program, and the processor is used to call and execute the computer program from the memory to implement the wall thickness detection method of the coiled tubing according to any one of claims 1 to 5.

10. A storage medium, characterized in that: The storage medium is used to store a computer program, and the computer program is executed by a processor to implement the wall thickness detection method of a coiled tubing according to any one of claims 1 to 5.

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