Well testing steel wire online flaw detection device

Abstract

The utility model discloses a well testing steel wire on-line flaw detection device which comprises a bottom plate, the bottom plate comprises a plate-shaped bottom plate main body, the head of the bottom plate main body is provided with a pair of columnar first cylinders, the inner walls of the first cylinders are provided with first guide notches, the first guide notches are provided with first positioning notches, and the first positioning notches are provided with second guide notches. A detachable detection probe is arranged between the first guide notches and comprises a plate-shaped probe base, a probe hole is formed in the center of the probe base, a columnar centralizing column is arranged at the tail of the bottom plate body, a through centralizing opening is formed in the centralizing column, a pair of shaft holes is formed in the side wall of the centralizing column, and shaft rods are arranged in the shaft holes. And a centralizing roller is arranged on the shaft rod. In the steel wire lifting operation process, the detection probe conducts online flaw detection on the steel wire, special inspection is not needed, the one-sidedness of local sampling inspection is avoided, and a large amount of detection time and detection cost are saved.

Description

Technical Field

[0001] This utility model relates to a flaw detection device, or more specifically, an online flaw detection device for well testing wire. Background Technology

[0002] Shale gas development in my country mainly relies on deep gas wells, and there are many tasks such as downhole dynamic monitoring and the deployment and retrieval of downhole nozzles. Due to the high Cl- ion content in the produced water of natural gas wells and the presence of various corrosive media, pitting corrosion and stress corrosion cracking occur on the test wire ropes immersed in the well. During the operation, the test wire ropes are constantly raised and lowered, bearing the continuous tension of the instruments and the rope itself, and undergoing continuous bending fatigue as they pass through the surface pulley system. In this situation, corrosive media form pitting or stress-induced microcracks on the surface of the steel wire. Under the load of mechanical tension and bending stress, longer transverse microcracks gradually extend from the bottom of the pit or the surface of the steel wire. As corrosive media enters these microcracks, the propagation of the cracks is further accelerated. After the crack initiation zone is formed, under the continuous action of bending and tensile alternating stress, some microcracks slowly extend into longer or deeper fatigue cracks. Finally, under the dual action of corrosive media and fatigue load, the cracks extend and cause the actual bearing area of ​​the steel wire to continuously decrease. When the actual bearing area of ​​the steel wire at a certain point is less than the theoretically required bearing area, the steel wire will suddenly experience brittle fracture failure due to overload. The direct result of the accident is that the instrument and the broken part of the steel wire fall into the well, causing an engineering quality accident.

[0003] Existing detection technologies have many drawbacks:

[0004] 1. The testing method is time-consuming and labor-intensive, with obvious drawbacks and poor applicability.

[0005] The method of taking samples from the end of the steel wire every 30 days for tensile testing, and having a tensile strength ≥700KG is considered qualified. This method is a partial sampling inspection method with obvious drawbacks. First, the sample taken can only represent a part of the steel wire and cannot guarantee the integrity of the whole roll of steel wire, which has a large loophole.

[0006] 2. Weak testing methods and excessively high costs associated with mandatory scrapping measures.

[0007] Due to the lack of effective detection methods, the steel wire was forcibly scrapped after 50 well operations. The steel wire material was expensive, and the forced scrapping when it was still usable resulted in a huge waste. Utility Model Content

[0008] Therefore, it is necessary to provide an online flaw detection device for well testing wire to address the aforementioned technical problems.

[0009] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0010] An online flaw detection device for well testing wire, characterized in that the device includes a base plate, the base plate comprising a plate-shaped base plate body.

[0011] The base plate body has a pair of columnar first columns at its head. Each first column has a first guide groove on its inner wall, and each first guide groove has a through-hole elongated positioning groove. A detachable detection probe is located between the first guide grooves. The detection probe includes a plate-shaped probe base with a probe hole at its center. First positioning screw holes are located on both side walls of the probe base, and these screw holes are fixedly connected to the first positioning grooves using first screws.

[0012] The base plate body has a columnar straightening column at its tail end. The straightening column has a through straightening opening. The side wall of the straightening column has a pair of shaft holes. Each shaft hole contains a shaft rod, and the shaft rod is equipped with a straightening roller.

[0013] In a preferred embodiment of the present invention, the edge of the base plate body is provided with a fixed bend, the fixed bend is provided with a through oblong fixed groove, and the fixed groove is provided with a pair of detachable rod-shaped guide rollers.

[0014] In a preferred embodiment of this utility model, the base plate body is provided with a plurality of fixing slots.

[0015] In a preferred embodiment of this utility model, the straightening column is welded to the base plate body.

[0016] In a preferred embodiment of this utility model, the tail of the base plate body is provided with a pair of second columns, each of the second columns has a second guide groove on its inner wall, and each of the second guide grooves has a through oblong second positioning groove. The straightening column is movably disposed between the second guide grooves, and the side wall of the straightening column is provided with a pair of second positioning screw holes, which are fixedly connected to the second positioning grooves by second screws.

[0017] In a preferred embodiment of this utility model, the detection probe is an eddy current detection probe.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] This invention provides an online flaw detection device for well testing wire. During the wire pulling and lowering operation, the detection probe 3 performs online flaw detection on the wire, eliminating the need for special testing and avoiding the bias of partial sampling, thus saving significant testing time and costs. Furthermore, the online flaw detector boasts high accuracy, and the test results can be displayed intuitively and in real-time on computer software. Operators can promptly and comprehensively grasp the performance parameters of the well testing wire, ensuring construction safety and effectively preventing quality accidents such as wire fatigue and corrosion fracture. Attached Figure Description

[0020] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the online flaw detection device for well testing wire of this utility model;

[0022] Figure 2 for Figure 1 An exploded three-dimensional structural diagram of the online flaw detection device for well testing wire in China;

[0023] Figure 3 for Figure 2 A detailed magnified view of region A in the diagram;

[0024] Figure 4 This is a three-dimensional structural schematic diagram of another embodiment of the online flaw detection device for well testing wire of this utility model;

[0025] Figure 5 for Figure 4 An exploded three-dimensional structural diagram of the online flaw detection device for well testing wire in China;

[0026] Figure 6 for Figure 5 A magnified view of the details of region B in the diagram;

[0027] The markings in the diagram are explained as follows: 1. The online flaw detection device for well testing wire includes a base plate; 11. Base plate body; 12. Fixed bend; 121. Fixed long groove; 13. Fixed groove opening; 14. First column; 141. First guide groove opening; 142. First positioning groove opening; 143. First screw; 15. Straightening column; 151. Straightening opening; 152. Shaft hole; 153. Second positioning screw hole; 16. Second column; 161. Second guide groove opening; 162. Second positioning groove opening; 2. Guide roller; 3. Detection probe; 31. Probe base; 32. Probe hole; 33. First positioning screw hole; 4. Straightening roller; 5. Shaft. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0029] like Figures 1 to 3 As shown, the online flaw detection device for well testing wire includes a base plate 1, which includes a plate-shaped base plate body 11.

[0030] The head of the base plate body 11 is provided with a pair of columnar first columns 14. Each of the first columns 14 has a first guide groove 141 on its inner wall. Each of the first guide grooves 141 has a through oblong first positioning groove 142. A detachable detection probe 3 is provided between the first guide grooves 141. The detection probe 3 includes a plate-shaped probe base 31. The probe base 31 has a probe hole 32 at its center. The two side walls of the probe base 31 have first positioning screw holes 33. The first positioning screw holes 33 are fixedly connected to the first positioning grooves 142 by first screws 143.

[0031] In addition, the detection probe 3 is an eddy current detection probe.

[0032] The base plate body 11 has a columnar straightening column 15 at its tail end. The straightening column 15 has a through straightening opening 151. The side wall of the straightening column 15 has a pair of shaft holes 152. Each shaft hole 152 has a shaft rod 5 inside it. The shaft rod 5 has a straightening roller 4.

[0033] In addition, the edge of the base plate body 11 is provided with a fixed bend 12, and the fixed bend 12 is provided with a through oblong fixed groove 121, and the fixed groove 121 is provided with a pair of detachable rod-shaped guide rollers 2.

[0034] It should be noted that the base plate body 11 is provided with several fixing slots 13 for fixing the base plate 1.

[0035] In addition, the uprighting column 15 is welded to the base plate body 11.

[0036] The working method of the online flaw detection device for well testing wire is explained below.

[0037] like Figure 1 As shown, the steps include:

[0038] S1. Using the fixing slot 13, fix the base plate 1 to the front end of the Martin-Dyck metering system;

[0039] S2. Pass the steel wire through the guide roller 2 and adjust the spacing of the guide roller 2, then pass the steel wire through the probe hole 32 of the detection probe 3. The height of the detection probe 3 can be adjusted using the first positioning slot 142;

[0040] S3. Pass the steel wire through the straightening opening 151 of the straightening column 15 so that the steel wire is located between the straightening rollers 4.

[0041] During the wireline pulling operation, the detection probe 3 performs online flaw detection on the wireline, eliminating the need for separate testing and avoiding the bias of localized sampling, thus saving significant testing time and costs. Furthermore, the online flaw detector boasts high accuracy, and the test results are displayed in real-time and intuitively on the computer software. Operators can promptly and comprehensively grasp the performance parameters of the well test wireline, ensuring construction safety and effectively preventing quality accidents such as wireline fatigue, corrosion breakage, etc.

[0042] like Figures 4 to 6 As shown, another embodiment of the present invention is presented. In this case, a pair of second pillars 16 are provided at the tail of the base plate body 11. Each of the second pillars 16 has a second guide groove 161 on its inner wall. Each of the second guide grooves 161 has a through oblong second positioning groove 162. The straightening pillar 15 is movably disposed between the second guide grooves 161. A pair of second positioning screw holes 153 are provided on the side wall of the straightening pillar 15. The second positioning screw holes 153 are fixedly connected to the second positioning grooves 162 by second screws 6.

[0043] Since the straightening column 15 can move up and down, it is even more convenient to adjust.

[0044] Obviously, the embodiments described above are only some embodiments of this application, and not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application.

Claims

1. An online flaw detection device for well testing wire, characterized in that, The online flaw detection device for well testing wire includes a base plate (1), and the base plate (1) includes a plate-shaped base plate body (11). The head of the base plate body (11) is provided with a pair of columnar first columns (14). The inner wall of each first column (14) is provided with a first guide groove (141). Each first guide groove (141) is provided with a through oblong first positioning groove (142). A detachable detection probe (3) is provided between the first guide grooves (141). The detection probe (3) includes a plate-shaped probe base (31). The center of the probe base (31) is provided with a probe hole (32). The two side walls of the probe base (31) are provided with first positioning screw holes (33). The first positioning screw holes (33) are fixedly connected to the first positioning grooves (142) by first screws (143). The base plate body (11) has a columnar straightening column (15) at its tail end. The straightening column (15) has a through straightening opening (151). The side wall of the straightening column (15) has a pair of shaft holes (152). Each shaft hole (152) has a shaft rod (5). The shaft rod (5) has a straightening roller (4).

2. The online flaw detection device for well testing wire as described in claim 1, characterized in that, The edge of the base plate body (11) is provided with a fixed bend (12), and the fixed bend (12) is provided with a through-hole elongated fixed groove (121), and the fixed groove (121) is provided with a pair of detachable rod-shaped guide rollers (2).

3. The online flaw detection device for well testing wire as described in claim 1, characterized in that, The base plate body (11) is provided with several fixing slots (13).

4. The online flaw detection device for well testing wire as described in claim 1, characterized in that, The straightening column (15) is welded to the base plate body (11).

5. The online flaw detection device for well testing wire as described in claim 1, characterized in that, The base plate body (11) has a pair of second columns (16) at its tail. The inner wall of each second column (16) is provided with a second guide groove (161). Each second guide groove (161) is provided with a through oblong second positioning groove (162). The straightening column (15) is movably arranged between the second guide grooves (161). The side wall of the straightening column (15) is provided with a pair of second positioning screw holes (153). The second positioning screw holes (153) are fixedly connected to the second positioning grooves (162) by second screws (6).

6. The online flaw detection device for well testing wire as described in claim 1, characterized in that, The detection probe (3) is an eddy current detection probe.

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