Pipe string vibration test tools and pipe string vibration test systems

Abstract

The present application relates to a pipe string vibration test tool and a pipe string vibration test system, which belongs to the field of pipe string vibration measurement technology. The pipe string vibration test tool includes a test device, a fixing part and a suspension part; the test device, the fixing part and the suspension part are all made of high temperature resistant and high pressure bearing materials, the test device is located in the fixing part, the suspension part is located above the test device and the fixing part, the test device, the fixing part and the suspension part are fixed to each other, and the fixing part and the test tool seat near the bottom of the well of the oil pipe to be tested are detachable and installed; the test device includes a shell, a battery, a conductive rod, a circuit board, a vibration sensor and a memory card, the battery, the conductive rod, the circuit board, the vibration sensor and the memory card are all located in the shell; the battery is electrically connected to the circuit board through the conductive rod; the vibration sensor and the memory card are both located on the surface of the circuit board. The present application can obtain the vibration condition of the oil pipe, timely understand the status of the oil pipe, effectively prevent the occurrence of accidents, and improve the safety of natural gas storage.

Description

Technical Field

[0001] The present application relates to the technical field of pipe string vibration measurement, and in particular to a pipe string vibration testing tool and a pipe string vibration testing system. Background Art

[0002] Underground gas storage is the most important natural gas storage method and peak-shaving means in the world today. The operation of gas storage mainly includes gas injection and gas production.

[0003] During the frequent gas injection and production process, the natural gas flows in the oil pipeline, which will induce oil pipeline vibration and then cause pipe fatigue. How to obtain the vibration status of the oil pipeline is an urgent problem that needs to be solved. Summary of the Invention

[0004] This application provides a pipe string vibration testing tool and a pipe string vibration testing system, which can overcome the problems existing in the related art. The technical solution is as follows:

[0005] According to the present application, a pipe string vibration test tool is provided, the pipe string vibration test tool comprising a test device, a fixing member, and a hanging member for being grasped by a fishing tool;

[0006] The test device, the fixing member, and the hanging member are all made of high-temperature resistant and high-pressure bearing materials. The test device is located in the fixing member, and the hanging member is located above the test device and the fixing member. The test device, the fixing member, and the hanging member are fixed to each other, and the fixing member is detachably mounted on a test tool seat near the bottom of the well of the oil pipe to be tested.

[0007] The testing device includes a shell, a battery, a conductive rod, a circuit board, a vibration sensor and a memory card. The battery, the conductive rod, the circuit board, the vibration sensor and the memory card are all located in the shell; the battery is electrically connected to the circuit board through the conductive rod; the vibration sensor and the memory card are both located on the surface of the circuit board.

[0008] Optionally, the testing device further includes an insulating tube, wherein the insulating tube is located in the shell, and the conductive rod is located in the insulating tube.

[0009] Optionally, the testing device further includes an upper end head, the bottom of the upper end head is connected to the top of the shell, and the upper end head is sealed on the top of the shell.

[0010] Optionally, the testing device further includes at least one conductive elastic member, and at least one pole of the battery is electrically connected to the conductive rod via the conductive elastic member.

[0011] Optionally, the housing includes a battery housing and a circuit board housing, and the battery housing and the circuit board housing are connected;

[0012] The battery and the conductive rod are both located in the battery housing, and the circuit board is located in the circuit board housing.

[0013] Optionally, the outer wall of the fixing member has a spherical elastic protrusion, and the inner wall of the test tool seat has a spherical groove adapted to the spherical elastic protrusion;

[0014] When the fixing member is located in the test tool seat of the oil pipe to be tested and close to the bottom of the well and the spherical elastic protrusion and the spherical groove are positioned opposite to each other, the spherical elastic protrusion extends into the spherical groove.

[0015] Optionally, the fixing member includes an outer tube, an inner tube, and a clamping block, the inner tube is located in the outer tube, and the length of the inner tube is greater than the length of the outer tube, the inner tube and the outer tube can slide relative to each other, and the bottom of the inner tube has a limiting protrusion for limiting the slipping of the outer tube;

[0016] The top of the inner tube and the bottom of the suspension member are fixed, and the outer diameter of the bottom of the suspension member is larger than the inner diameter of the top of the outer tube, so as to prevent the outer tube from slipping off the inner tube;

[0017] The outer diameter of the outer tube is smaller than the inner diameter of the top tube opening of the test tool holder and larger than the inner diameter of the bottom tube opening of the test tool holder, so as to be seated in the test tool holder;

[0018] The outer wall of the inner tube has a receiving groove, the wall of the outer tube has a through groove, and the inner wall of the test tool holder has a clamping groove. The receiving groove, the through groove and the clamping groove are all adapted to the clamping block, and the side wall of the receiving groove close to the suspension member is an inclined wall;

[0019] When the bottom of the outer tube is located at the limiting protrusion, the position of the accommodating groove is opposite to the position of the through groove, and the clamping block is located in the accommodating groove;

[0020] When the bottom of the outer tube is seated on the bottom of the test tool holder, the position of the through slot is opposite to the position of the clamping slot;

[0021] When the inner tube continues to move relative to the outer tube toward the bottom of the oil pipe to be tested, the inclined wall of the accommodating groove pushes the clamping block into the clamping groove.

[0022] Optionally, before the inner tube continues to move relative to the outer tube toward the bottom of the oil pipe to be tested, a shear pin is connected between the inner wall of the outer tube and the outer wall of the inner tube.

[0023] Optionally, a shear pin is connected between the inner wall of the outer tube and the outer wall of the inner tube. When the outer tube is seated in the test tool seat and the inner tube continues to move toward the bottom of the well relative to the outer tube, the shear pin connected between the outer tube and the inner tube breaks.

[0024] Optionally, the pipe string vibration test tool further comprises a test sensor, and the bottom of the fixing member has an axial through hole;

[0025] One end of the test sensor is connected to the bottom of the housing of the test device, and the other end of the test sensor extends out of the fixing member through the through hole;

[0026] The test sensor is used to test at least one of pressure, temperature and flow.

[0027] Optionally, the hanging member includes a fixing cap and a grabbing head, and the grabbing head is located on the outer surface of the top of the fixing cap;

[0028] The fixing cap is fixed to the top of the fixing member, and the grabbing head is used for being grabbed by a salvaging tool.

[0029] Optionally, the vibration sensor is a three-axis vibration sensor capable of measuring vibration data of the oil pipe to be tested in the directions of the X-axis, Y-axis and Z-axis.

[0030] On the other hand, a tubing string vibration testing system is also provided, the system comprising an oil pipe to be tested and the tubing string vibration testing tool described above, wherein the tubing string vibration testing tool is in the oil pipe to be tested and is located at the bottom of the oil pipe to be tested;

[0031] The wall of the oil pipe to be tested located above the pipe string vibration testing tool has a perforation serving as an air flow hole for the oil pipe to be tested.

[0032] The beneficial effects of the technical solution provided by this application include at least:

[0033] This tubing vibration testing tool can be lowered to the bottom of the well several thousand meters below the oil pipeline. It obtains the vibration data of the oil pipeline through the vibration sensor in the internal testing device and saves the vibration data on the memory card. The technicians then periodically read the vibration data of the oil pipeline from the memory card. By analyzing the vibration data of the oil pipeline, they can timely understand the current status of the oil pipeline, effectively prevent accidents, and improve the safety of natural gas storage.

[0034] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the description, serve to explain the principles of the present application. In the drawings:

[0036] Figure 1 is a structural schematic diagram of a pipe string vibration testing tool according to an embodiment;

[0037] Figure 2 is a schematic diagram showing a scenario of an oil pipe to be tested where a pipe string vibration testing tool is located according to an embodiment;

[0038] Figure 3 1 is a schematic structural diagram of a testing device for a pipe string vibration testing tool according to an embodiment;

[0039] Figure 4 is a schematic structural diagram of a battery case of a testing device according to an embodiment;

[0040] Figure 5 is a schematic structural diagram of a circuit board of a testing device according to an embodiment;

[0041] Figure 6 is a schematic structural diagram of a conductive rod of a testing device according to an embodiment;

[0042] Figure 7 is a schematic structural diagram of an insulating tube of a testing device according to an embodiment;

[0043] Figure 8 is a schematic structural diagram of a circuit board shell of a testing device according to an embodiment;

[0044] Figure 9 is a structural schematic diagram of an upper plug of a testing device according to an embodiment;

[0045] Figure 10 is a structural schematic diagram of a pipe string vibration testing tool according to an embodiment;

[0046] Figure 11 1 is a schematic structural diagram of a pipe string vibration testing tool according to an embodiment.

[0047] Legend

[0048] 1. Test device; 11. Housing; 12. Battery; 13. Conductive rod; 131. First mounting hole;

[0049] 14. Circuit board; 15. Vibration sensor; 16. Memory card; 17. Insulation tube;

[0050] 18. Upper end; 181. Second mounting hole;

[0051] 19. Conductive elastic member; 111. Battery housing; 112. Circuit board housing;

[0052] 2. Fixing piece; 21. Outer tube; 22. Inner tube; 23. Clamping block; 211. Through slot;

[0053] 221, limiting protrusion; 222, receiving groove; 223, inclined wall;

[0054] 3. Suspension piece; 31. Fixing cap; 32. Grabbing head;

[0055] 4. Oil pipe to be tested; 41. Test tool holder; 411. Card slot;

[0056] 5. Test the sensor.

[0057] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0058] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0059] The present invention provides a tubing string vibration testing tool that can be lowered to the bottom of a well several kilometers deep to test the vibration of an oil pipe string. The tubing string vibration testing tool is resistant to high temperatures and high pressures, and can remain stable in high-temperature and high-pressure environments at depths of several kilometers.

[0060] One possible application scenario for this tubing vibration testing tool might involve lowering it to a location near the bottom of an oil pipeline using a fishing tool. The fishing tool then lowers the tool into the pipeline and then pulls it out of the pipeline. After a period of time, the fishing tool is used to retrieve the tubing vibration testing tool from the bottom of the pipeline to facilitate reading the data recorded within it. Because the vibration of the pipeline is to be tested, the tubing vibration testing tool is connected to the pipeline to record the vibration data. For example, the tubing vibration testing tool can be connected to a test tool holder at the bottom of the pipeline.

[0061] In one possible usage scenario, the tubing string vibration test tool located in the well can periodically test the vibration data of the tubing string, or it can test the vibration data of the tubing string non-periodically. For example, the tubing string vibration test tool performs a test at intervals, and each test lasts for a period of time. The test cycle and the duration of each test can be flexibly selected by technicians based on actual conditions. The tubing string vibration test tool can also continuously test the vibration data of the tubing string. For example, after the tubing string vibration test tool is lowered to the bottom of the well, it continuously tests the vibration data of the tubing string. In this embodiment, whether the tubing string vibration test tool performs periodic, non-periodic, or continuous testing is not limited, and technicians can flexibly select according to actual conditions.

[0062] Before lowering the string vibration test tool into the oil pipe 4 to be tested, the technician can also set a start time for the test. For example, the technician can estimate the time required for the string vibration test tool to reach the bottom of the oil pipe 4 to be tested, as well as the time required for the oil pipe to return to a stable state. This total time can be used as the countdown time for the string vibration test tool to start testing. For example, if the total time is 48 hours, the string vibration test tool will not begin testing until 48 hours have passed since the main power button was turned on.

[0063] In this way, by setting the starting test time of the pipe string vibration test tool, the power of the pipe string vibration test tool can be saved and the service life of the pipe string vibration test tool can be extended.

[0064] The above vibration data are all recorded in the memory card of the pipe string vibration test tool. After the technicians salvage the pipe string vibration test tool later, they can read the vibration data recorded in the memory card.

[0065] The vibration data of the pipe string may include data such as vibration frequency, vibration amplitude and vibration trajectory.

[0066] Among them, the application scenarios of the pipe string vibration test tool are:

[0067] The tubing string vibration test tool can be used to test the vibration of the tubing string in a gas environment, a liquid environment, or a gas-liquid mixed environment.

[0068] Accordingly, the tubing string vibration testing tool can be applied to the vibration of the tubing string under the actual production and operation conditions of gas storage wells, natural gas wells, and oil and water wells.

[0069] In addition, the tubing string vibration test tool can also be used to test the vibration of the tubing string under special working conditions such as acidizing, fracturing and water injection.

[0070] In this embodiment, there is no limitation on the specific application scenario of the pipe string vibration testing tool, and the tool can be applied in any scenario with vibration.

[0071] The specific structure of the pipe string vibration test tool is described in detail below:

[0072] like Figure 1 As shown, the pipe string vibration test tool includes a test device 1, a fixing part 2 and a hanging part 3 for the fishing tool to grab; the test device 1, the fixing part 2 and the hanging part 3 are all made of high temperature resistant and high pressure bearing materials, the test device 1 is located in the fixing part 2, the hanging part 3 is located above the test device 1 and the fixing part 2, and the test device 1, the fixing part 2 and the hanging part 3 are fixed to each other, as shown in FIG. Figure 1 And refer to Figure 2 As shown, the fixing member 2 is fixed to the testing tool seat 41 of the oil pipe 4 to be tested close to the bottom of the well.

[0073] like Figure 3 As shown, the testing device 1 includes a shell 11, a battery 12, a conductive rod 13, a circuit board 14, a vibration sensor 15 and a memory card 16. The battery 12, the conductive rod 13, the circuit board 14, the vibration sensor 15 and the memory card 16 are all located in the shell 11; the battery 12 is electrically connected to the circuit board 14 through the conductive rod 13; the vibration sensor 15 and the memory card 16 are both located on the surface of the circuit board 14.

[0074] The testing device 1 is the core component of the tubing vibration testing tool, and is used to record the vibration data of the oil pipe 4 to be tested.

[0075] The fixing member 2 is used to fix the testing device 1 in the oil pipe 4 to be tested.

[0076] The hanging member 3 is used for being grabbed by the fishing tool so as to facilitate the lowering and removal of the pipe string vibration testing tool.

[0077] In one example, the tubing vibration test tool has good high temperature and high pressure resistance characteristics. Its test device 1, fixing part 2 and suspension part 3 are all made of high temperature and high pressure resistance materials. For example, the tubing vibration test tool can work continuously for 145 hours in an environment with a maximum pressure of 60 MPa and a maximum temperature of 150°C.

[0078] The positional relationship and installation relationship between the test device 1, the fixing member 2, the hanging member 3 and the test tool holder 41 of the oil pipe to be tested 4 are as follows:

[0079] like Figure 1As shown, the test device 1 is located within the fixture 2, with the two being detachably fixedly connected. The fixture 2 is located within the test tool holder 41 of the oil pipe 4 to be tested, with the two also being detachably fixedly connected. The suspension head 3 is located on top of the test device 1 and the fixture 2, with the suspension head 3 and at least one of the test device 1 and the fixture 2 being detachably fixedly connected.

[0080] For example, the suspension head 3 and the test device 1 are detachably fixedly connected, and because the test device 1 and the fixture 2 are also fixedly connected, the test device 1, the fixture 2, and the suspension head 3 are all fixedly connected. For example, the bottom of the suspension head 3 and the upper end 18 of the test device 1 are fixedly connected via threads, which will be described in detail below when describing the specific structure of the test device 1.

[0081] For another example, the suspension head 3 and the fixture 2 are detachably fixedly connected. Since the test device 1 and the fixture 2 are also fixedly connected, the test device 1, the fixture 2, and the suspension head 3 are also fixedly connected. For example, the suspension head 3 and the inner tube 22 of the fixture 2 are fixedly connected via threads, which will be described in detail below when describing the specific structure of the fixture 2.

[0082] In one example, since the tubing vibration test tool is used to test the vibration of the oil pipe, in order to better transmit the vibration of the oil pipe 4 to be tested to the tubing vibration test tool, the outer wall of the fixing part 2 is tightly fitted with the inner wall of the test tool seat 41, and the outer wall of the test device 1 is tightly fitted with the inner wall of the fixing part 2.

[0083] The above is the positional relationship and installation relationship between the test device 1, the fixing member 2, the hanging member 3 and the test tool holder 41. The above components will be introduced in detail below.

[0084] For test device 1, if Figure 3 As shown, it mainly includes a shell 11, a battery 12, a conductive rod 13, a circuit board 14, a vibration sensor 15 and a memory card 16. The battery 12, the conductive rod 13, the circuit board 14, the vibration sensor 15 and the memory card 16 are all located in the shell 11; the battery 12 is electrically connected to the circuit board 14 through the conductive rod 13; the vibration sensor 15 and the memory card 16 are both located on the surface of the circuit board 14.

[0085] In one example, the shell 11 has a tubular structure, and its outer wall is in contact with the inner wall of the fixing member 2. Since the pipe string vibration test tool is located at a location several thousand meters below, it is difficult or even impossible to power it with a cable. On the one hand, the power loss of the cable is very large, and on the other hand, the cable is difficult to withstand high temperature and high pressure environments. Therefore, the pipe string vibration test tool needs to have an independent high temperature and high pressure resistant battery 12. The battery 12 is located in the shell 11, for example, Figure 3 As shown, the housing 11 may include a battery housing 111, and the battery 11 is located in the battery housing 111. Figure 4 A schematic diagram of the battery housing 111 is shown.

[0086] Since the pipe string vibration test tool is used to test the vibration of the oil pipe 4 to be tested, accordingly, Figure 3 As shown, the test device 1 further includes a circuit board 14 and a vibration sensor 15, as shown in FIG. Figure 5 The schematic diagram of the structure of the circuit board 14 is shown as follows. Figure 3 As shown, the vibration sensor 15 is located on the surface of the circuit board 14. The vibration sensor 15 is used to test the vibration of the oil pipe 4 to be tested. It can be a three-axis vibration sensor that can test vibration data in three directions: X-axis, Y-axis and Z-axis.

[0087] As mentioned above, it is difficult to achieve electrical connection of the pipe string vibration test tool through cables. Figure 3 As shown, the test device 1 also includes a conductive rod 13 that is resistant to high temperature and high pressure. Figure 6 The figure shows the structure of the conductive rod 13, which is used to electrically connect the battery 12 and the circuit board 14. For example, the positive and negative electrodes of the battery 12 are electrically connected to the circuit board 14 through the conductive rod 13.

[0088] In order to ensure the connection stability between the battery 12 and the circuit board 14, accordingly, as Figure 3 As shown, the testing device 1 may further include at least one conductive elastic member 19, which is compressed between the battery 12 and the conductive rod 13. Figure 6 And refer to Figure 3 As shown, the end of the conductive rod 13 near the battery 12 has a first mounting hole 131 for the conductive elastic member 19. The conductive elastic member 19 is located in the first mounting hole 131 and abuts against the end of the battery 12. For example, the conductive elastic member 19 is compressed between the positive electrode of the battery 12 and the conductive rod 13, and the conductive elastic member 19 is also compressed between the negative electrode of the battery 12 and the conductive rod 13. For another example, the conductive elastic member 19 is compressed between one of the positive and negative electrodes of the battery 12 and the conductive rod 13.

[0089] The conductive elastic member 19 can be a spring that is resistant to high temperatures and high pressures and is conductive. The conductive elastic member 19 is used to ensure good contact between the battery 12 and the circuit board 14 and to provide a buffer for the battery 12, thereby protecting the battery 12.

[0090] As mentioned above, it is difficult for the string vibration test tool to output vibration data in real time through the cable. Figure 3 As shown, the test device also includes a memory card 16, which is located on the surface of the circuit board 14 and is used to record the vibration data transmitted by the vibration sensor 15, so that after the pipe string vibration test tool is taken out, the vibration data in the memory card 16 can be read by a computer device.

[0091] In one example, in order to prevent the technician from touching the conductive rod 13 and causing a safety accident when disassembling the pipe string vibration test tool, accordingly, Figure 3 As shown, the test device 1 may further include an insulating tube 17, the insulating tube 17 is located in the housing 11, and the conductive rod 13 is located in the insulating tube 17. The insulating tube 17 may be made of a rubber material that is resistant to high temperature and high pressure. Figure 7 Shown is a schematic structural diagram of the insulating tube 17.

[0092] As described above, the housing 11 of the testing device 1 may include a battery housing 111. Accordingly, the battery 12, the conductive rod 13, and the insulating tube 17 may all be located in the battery housing 111. Figure 3 As shown, the housing 11 further includes a circuit board housing 112, and the circuit board 14 is located in the circuit board housing 112. Figure 8 The figure shows a schematic structural diagram of the circuit board housing 112. The battery housing 111 and the circuit board 112 are detachably fixedly connected. For example, the battery housing 111 and the circuit board housing 112 are detachably fixedly connected by threads.

[0093] The testing device 1 may also include at least one button. The housing 11 may have at least one button hole formed in its wall. For example, the circuit board housing 112 may have at least one button hole formed in its wall. Each button may be installed in one of these button holes, and each button is electrically connected to the circuit board 14. The at least one button may include a power button. The tubing string vibration testing tool is then lowered between the oil pipes 4 to be tested, and the power button is used to activate the tool. Technicians may flexibly configure various function buttons based on actual needs, and this embodiment does not limit this.

[0094] In one example, the housing 11 of the test device 1 can be a tubular structure with both ends sealed or open, allowing technicians to flexibly select the appropriate design based on actual needs. For an open-ended housing 11, the top of the housing 11 must be sealed with a hanger 3, and the bottom of the housing 11 must be sealed with a fixture 2 to prevent oil and gas in the oil pipe 4 to be tested from entering the string vibration test tool and causing damage.

[0095] like Figure 3 As shown, the testing device 1 may further include an upper end 18 , the bottom of the upper end 18 is connected to the top of the housing 11 , and the upper end 18 is sealed at the top of the housing 1 .

[0096] In one example, Figure 9 The upper plug 18 is a schematic structural diagram. The upper end 18 can be a solid cylindrical structure. The outer wall of the bottom of the upper end 18 has an external thread, and the inner wall of the top of the battery shell 111 has an internal thread. Figure 3 As shown, the upper terminal 18 can be detachably fixed to the top of the battery shell 111 by threads.

[0097] In one example, the outer wall of the top of the upper end 18 may also have an external thread, and the bottom of the hanging member 3 may have a threaded hole ( Figure 2 (not shown), the top of the upper end 18 can be detachably fixed to the bottom of the suspension member 3 by means of threads.

[0098] like Figure 3 As shown, the battery 12 is located below the upper plug 18. Accordingly, if the end of the battery 12 away from the circuit board 14 is also equipped with a conductive elastic member 19, then Figure 9 As shown, the bottom of the upper plug 18 has a second mounting hole, and a conductive elastic member 19 is also installed in the second mounting hole, so that the positive and negative poles of the battery 12 are connected to the circuit board 14 through the conductive elastic member 19, wherein the two conductive elastic members 19 are in a compressed state, so that the battery 12 and the conductive rods 13 at both ends can be in good contact.

[0099] As described above, the test device 1 and the fixture 2 are fixedly connected. Accordingly, in one case, the test device 1 may be interference-fitted into the fixture 2, or in another case, the housing 11 of the test device 1 and the fixture 2 may be connected via threads. This embodiment does not limit the manner in which the test device 1 and the fixture 2 can be detachably fixed.

[0100] The above is the specific structure of the testing device 1 of the pipe string vibration testing tool. The specific structure of the fixing member 2 will be described in detail below.

[0101] A possible structure of the fixing member 2 may be that the fixing member 2 has a tubular structure that is sleeved outside the test device 1, and the fixing member 2 and the test device 1 are fixedly connected. The outer wall of the fixing member 2 and the test tool holder 41 are snap-fitted by the cooperation of the protrusion and the groove. For example, the outer wall of the fixing member 2 has a spherical elastic protrusion, and the inner wall of the test tool holder 41 has a spherical groove. During the lowering of the tubular vibration test tool, the spherical elastic protrusion is in a retracted state and compressed between the inner wall of the oil pipe 4 to be tested and the outer wall of the fixing member 2. When the tubular vibration test tool is lowered into the test tool holder 41 and the positions of the spherical elastic protrusion and the spherical groove of the test tool holder 41 are relative, the spherical elastic protrusion pops out into the spherical groove of the test tool holder 41, thereby snapping the fixing member 2 and the test tool holder 41.

[0102] Because it is difficult to achieve a relatively stable fixed connection between the fixing member 2 and the test tool holder 41 solely through the cooperation of the spherical elastic protrusion and the spherical groove, the outer diameter of the bottom of the fixing member 2 is correspondingly smaller than the inner diameter of the bottom of the test tool holder 41, allowing the fixing member 2 to sit on the bottom of the test tool holder 41. Moreover, the distance between the spherical groove on the inner wall of the test tool holder 41 and the bottom of the test tool holder 41 is adapted to the distance between the spherical elastic protrusion on the outer wall of the fixing member 2 and the bottom of the fixing member 2, so that when the spherical elastic protrusion of the fixing member 2 springs into the spherical groove of the test tool holder 41, the bottom of the fixing member 2 is precisely seated on the bottom of the test tool holder 41.

[0103] In this way, in terms of the detachable installation of the fixing part 2 and the test tool holder 41, on the one hand, the detachable connection is achieved by the spherical elastic protrusion being clamped in the spherical groove, and on the other hand, the bottom of the fixing part 2 is seated on the bottom of the test tool holder 41, so that the test tool holder 41 supports the fixing part 2, which can make the fixing part 2 firmly fixed in the test tool holder 41.

[0104] Another possible structure of the fixing member 2 may be as follows: Figure 1 As shown, the fixing member 2 includes an outer tube 21, an inner tube 22, and a clamping block 23. The inner tube 22 is located in the outer tube 21 and is longer than the outer tube 21. The inner tube 22 and the outer tube 21 can slide relative to each other. The bottom of the inner tube 22 has a limiting protrusion 221 for preventing the outer tube 21 from slipping off. In this way, the outer tube 21 is sleeved on the inner tube 22, and the limiting protrusion 221 on the bottom of the inner tube 22 can prevent the outer tube 21 from slipping off the bottom of the inner tube 22.

[0105] To improve the accuracy of the test results from this string vibration test tool, the gap between the outer tube 21 and the inner tube 22 is minimal. For example, the inner wall of the outer tube 21 and the outer wall of the inner tube 22 are in contact, yet can slide relative to each other under the action of force. This ensures good contact between the outer tube 21 and the inner tube 22, allowing the vibration of the oil pipe 4 to be tested to be transmitted to the test device 1 located in the inner tube 22.

[0106] like Figure 1 As shown, the top of the inner tube 22 is fixed to the suspension member 3. For example, the bottom of the suspension member 3 has an internal thread, the top of the inner tube 22 has an external thread, and the bottom of the suspension member 3 and the top of the inner tube 33 are connected by threads.

[0107] Moreover, the outer diameter at the bottom of the hanger 3 is larger than the inner diameter at the top of the outer tube 21, so that Figure 1 As shown, the outer tube 21 is sleeved on the inner tube 22 , and the hanger 3 is installed on the top of the inner tube 22 . The hanger 3 can prevent the outer tube 21 from slipping off the top of the inner tube 22 .

[0108] In this way, Figure 1 As shown, although the outer tube 21 and the inner tube 22 can slide relative to each other, the outer tube 21 can only slide downward to the position of the limiting protrusion 221 at the bottom of the inner tube 22, and can only slide upward to the position of the bottom of the suspension member 3.

[0109] like Figure 1 As shown, the outer diameter of the outer tube 21 is smaller than the inner diameter of the top opening of the test tool holder 41, and larger than the inner diameter of the bottom opening of the test tool holder 41. In this way, although the outer tube 21 can enter the test tool holder 41, it cannot extend from the bottom of the test tool holder 41, and thus the outer tube 21 can be seated at the bottom of the test tool holder 41.

[0110] In order to realize the detachable installation of the outer tube 21 and the test tool holder 41, accordingly, as Figure 1 As shown, the outer wall of the inner tube 22 has a receiving groove 222, the wall of the outer tube 21 has a through groove 211, and the inner wall of the test tool holder 41 has a clamping groove 411. The dimensions of the receiving groove 222, the through groove 211, and the clamping groove 411 are all comparable to the dimensions of the clamping block 23. The shape of the through groove 211 matches the shape of the clamping block 23. For example, the clamping block 23 is a rectangular block, and the through groove 211 is a rectangular through hole.

[0111] For example, the length of the accommodating groove 222 is greater than the width of the through groove 211, the width of the through groove 211 can be roughly equal to the width of the card slot 411, and the width of the accommodating groove 222 is greater than the height of the card block 23, the width of the through groove 211 is greater than the height of the card block 23, and the width of the card slot 411 is greater than the height of the card block 23, so that the card block 23 can be located in the accommodating groove 222, pass through the through groove 211, and be located in the card slot 411.

[0112] Among them, Figure 1 As shown, the slot opening of the accommodating slot 222 is away from the central axis of the inner tube 22, the bottom of the accommodating slot 222 is close to the central axis of the inner tube 22, and the side wall of the accommodating slot 222 close to the suspension member 3 is an inclined wall, which can be called the inclined wall 223 of the accommodating slot 222.

[0113] Moreover, if Figure 1 As shown, when the bottom of the outer tube 21 is located at the limiting protrusion 221 of the inner tube 22, the position of the receiving groove 222 of the inner tube 22 is opposite to the position of the through groove 211 of the outer tube 21, as shown in FIG. Figure 1 As shown, a portion of the block 23 is located in the receiving groove 222, and another portion is located in the through groove 211. In this state, the position of the block 23 is mainly related to the length of the block 23 and the depth of the receiving groove 222. For example, if the block 23 is relatively long and the receiving groove 222 is relatively shallow, then a portion of the block 23 is located in the receiving groove 222 and another portion is located in the through groove 211. For another example, if the block 23 is relatively short and the receiving groove 222 is relatively deep, then the block 23 may be completely located in the receiving groove 222. This embodiment does not limit this, and technicians can flexibly adjust it according to actual conditions.

[0114] When the bottom of the outer tube 21 is seated on the bottom of the test tool holder 41, Figure 1 As shown, the position of the card slot 411 of the test tool holder 41, the through slot 211 of the outer tube 21 and the accommodating slot 222 of the inner tube 22 are relative. For example, the lower slot wall of the card slot 411, the inner wall of the through slot 211 and the lower slot wall of the accommodating slot 222 are located at the same height.

[0115] like Figure 1 As shown, since the outer diameter of the inner tube 22 is smaller than the inner diameter of the bottom tube opening of the test tool holder 41, although the outer tube 21 is limited by the test tool holder 41 and cannot be lowered further, the inner tube 22 can still be lowered. Once the inner tube 22 slides relative to the outer tube 21, as shown in FIG. Figure 1 As shown, the inclined wall 223 of the receiving groove 222 of the inner tube 22 can push the clamping block 23 into the clamping groove 411 of the test tool holder 41 .

[0116] like Figure 10As shown, when the receiving groove 222 is just offset from the position of the through groove 211, the distance that the inner tube 22 slides relative to the outer tube 21 is approximately the length of the slot of the receiving groove 222. Therefore, in order for the receiving groove 222 to smoothly push the blocking block 23 into the blocking groove 411, the sliding distance of the inner tube 22 relative to the outer tube 21 is at least equal to the length of the slot of the receiving groove 222. When the outer tube 21 is located at the limiting protrusion 221, the distance between the bottom of the suspension member 3 and the top of the outer tube 21 should be greater than or equal to the maximum sliding distance of the inner tube 22 relative to the outer tube 21. Therefore, when the outer tube 21 is located at the limiting protrusion 221, the distance between the bottom of the suspension member 3 and the top of the outer tube 21 is at least equal to the length of the slot of the receiving groove 222.

[0117] In this way, the hanger 3 drives the inner tube 22 to continue to move toward the bottom of the oil pipe 4 to be tested relative to the outer tube 21. Figure 10 As shown, when the bottom of the suspension member 3 moves to contact the top of the outer tube 21, the suspension member 3 and the inner tube 22 stop moving, and the position of the accommodating groove 222 and the position of the through groove 211 are in a staggered state, which can be just staggered or already staggered. The inclined wall of the accommodating groove 222 has pushed the block 23 into the slot 411. At this time, a part of the block 23 is located in the slot 411, and the other part is located in the through groove 211.

[0118] It can be seen that in terms of the detachable installation of the fixing part 2 and the test tool holder 41, on the one hand, the detachable connection is achieved by the clamping block 23 being clamped in the clamping slot 411, and on the other hand, the bottom of the fixing part 2 is seated on the bottom of the test tool holder 41, so that the support of the test tool holder 41 to the fixing part 2 is achieved, which can make the fixing part 2 firmly fixed in the test tool holder 41.

[0119] In a possible application, during the lowering process of the tubular column vibration test tool, the salvage tool is fixed to the top of the hanger 3, the bottom of the hanger 3 is connected to the top of the inner tube 22 of the fixing member 2, the outer tube 21 is sleeved on the inner tube 22, and the outer tube 21 is located at the limiting protrusion 221 of the inner tube 22, a part of the block 23 is located in the accommodating groove 222, and the other part of the block 23 is located in the through groove 211.

[0120] The outer tube 21, the inner tube 22, and the clamping block 23 can be assembled in the following manner: first, the clamping block 23 is placed in the through groove 221 from the inside of the outer tube 21, with the first end of the clamping block 23 exposed in the through groove 221 and protruding from the outer wall of the outer tube 21, and the second end of the clamping block 23 just exposed in the through groove 211 and flush with the inner wall of the outer tube 21, or the second end of the clamping block 23 does not expose in the through groove 211. Then, the outer tube 21 is sleeved over the inner tube 22, and the outer tube 21 slides relative to the inner tube 22 to the bottom limiting protrusion 221 of the inner tube 22. At this time, the position of the through groove 211 and the position of the receiving groove 222 are opposite, and then the clamping block 23 is pushed into the receiving groove 222 so that the clamping block 23 is located in the through groove 211 and the receiving groove 222. In order to prevent the block 23 from falling off from the through groove 211 of the outer tube 21, the cross-sectional area of ​​the block 23 gradually increases from the first end to the second end, and the cross-sectional area at the first end of the block 23 is smaller than the cross-sectional area of ​​the through groove 221, and the cross-sectional area at the second end of the block 23 is larger than the cross-sectional area of ​​the through groove 221, so that the first end of the block 23 can pass through the through groove 221 of the outer tube 21, while the second end of the block 23 cannot pass through the through groove 221 of the outer tube 21.

[0121] Another way is to put the outer tube 21 on the outside of the inner tube 22, and slide the outer tube 21 relative to the inner tube 22 to the bottom limit protrusion 221 of the inner tube 22. At this time, the through groove 211 of the outer tube 21 and the receiving groove 222 of the inner tube 22 are relative to each other, and then place the block 23 in the through groove 221 and the receiving groove 222.

[0122] After the fishing tool is fixed on the hanger 3, the tubing string vibration testing tool can be lowered into the well by the fishing tool.

[0123] The fishing tool can be a specialized steel wire with a certain load-bearing capacity. In other scenarios, when no fishing tool is available, the string vibration test tool can be directly deployed. The string vibration test tool is lowered to the bottom of the oil pipe 4 to be tested. For example, technicians can first estimate the buoyancy of the medium in the oil pipe 4 to determine whether the string vibration test tool is suitable for direct deployment.

[0124] When the fixing member 2 is lowered until the outer tube 21 is seated at the bottom of the test tool holder 41, Figure 10 As shown, the outer tube 21 is restricted and cannot continue to move downward. At this time, the through groove 211 of the outer tube 21 and the clamping groove 411 of the test tool holder 41 are opposite to each other. The inner tube 22 can pass through the bottom tube opening of the test tool holder 41 and continue to slide downward relative to the outer tube 21. During the sliding of the inner tube 22, as shown in FIG. Figure 1 and Figure 10 As shown, the block 23 in the receiving groove 222 is gradually squeezed into the receiving groove 411 under the push of the inclined wall 223 of the receiving groove 222, as shown in FIG. Figure 10 As shown, until the position of the receiving groove 222 and the through groove 211 is missed, the block 23 stays in the through groove 211 and the slot 411. Figure 10 As shown, when the bottom of the hanger 3 contacts the top of the outer tube 21, the hanger 3 and the inner tube 22 stop moving. In this way, the tubing string vibration testing tool is installed in the testing tool seat 41 of the oil pipe 4 to be tested. Then, the fishing tool can release the top of the hanger 3 and move to the wellhead.

[0125] When removing the tubing string vibration test tool, the process is the opposite of the above. For example, first, the fishing tool is extended into the well, grabs the top of the hanger 3, and moves upward a distance. When the inner tube 22 moves to the point where the limiting protrusion 221 contacts the bottom of the outer tube 21, the fishing tool can vibrate the tubing string vibration test tool, causing the clamping block 23 to disengage from the clamping slot 411 of the test tool holder 41 and enter the receiving slot 222. After the clamping block 23 disengages from the clamping slot 411 and enters the receiving slot 222, the fishing tool can drive the hanger 3 upward, and the hanger 3 drives the inner tube 22 and outer tube 21 upward. In this way, the fishing tool can salvage the tubing string vibration test tool from the bottom of the well.

[0126] After the tubing string vibration testing tool is fished out from the bottom of the well, a technician can remove the testing device 1 from the fixing member 2 and remove the memory card 16 to read the vibration data recorded on the memory card 16 .

[0127] In one example, since the outer tube 21 and the inner tube 22 of the fixing member 2 can slide relative to each other, in order to maintain the stability between the outer tube 21 and the inner tube 22 during the lowering, shear pins can be connected between the inner wall of the outer tube 21 and the outer wall of the inner tube 22. When the outer tube 21 is seated in the test tool seat 41 and cannot continue to slide downward, and the inner tube 22 continues to slide downward, the shear pins connected between the outer tube 21 and the inner tube 22 break and will not interfere with the continued downward sliding of the inner tube 22 relative to the outer tube 21.

[0128] As mentioned above, the hanging member 3 is used for the fishing tool to grab and put down and take out the pipe string vibration test tool. Figure 10 As shown, the hanger 3 may include a fixing cap 31 and a grabbing head 32. The grabbing head 32 is located on the outer surface of the top of the fixing cap 31. The fixing cap 31 is fixed to the top of the fixing member 2. For example, the bottom of the fixing cap 31 has an internal thread, and the top of the inner tube 22 of the fixing member 2 has an external thread. The fixing cap 32 can be connected to the top of the inner tube 22 by threads.

[0129] In one example, the grabbing head 32 of the hanger 3 is used for being grabbed by a salvage tool. For example, the grabbing head 32 is vertically connected to the top outer surface of the fixing cap 31, and the end of the grabbing head 32 away from the fixing cap 31 has a grabbing portion for being grabbed by a salvage tool.

[0130] In other examples, such as Figure 11 As shown, the tubing vibration test tool may further include a test sensor 5, and the bottom of the fixing member 2 has an axial through hole 24; one end of the test sensor 5 is connected to the bottom of the shell 11 of the test device 1, and the other end of the test sensor 5 extends out of the fixing member 2 through the through hole 24; the test sensor 5 is used to test at least one of pressure, temperature and flow.

[0131] like Figure 11 As shown, the bottom of the outer tube 21 of the fixing member 2 is open, so the bottom of the fixing member 2 has an axial through hole 24, that is, as shown in FIG. Figure 11 As shown, the bottom of the inner tube 22 has an axial through hole 24. The inner diameter of the through hole 24 can be smaller than the outer diameter of the housing 11, so that the housing 11 will not fall out of the through hole 24. Alternatively, the inner diameter of the through hole 24 can be equal to the inner diameter of the inner tube 22, and the outer wall of the housing 11 and the inner wall of the inner tube 22 are fixed, so that the housing 11 will not fall out of the through hole 24. The inner diameter of the through hole 24 is not limited in this embodiment, and can be larger than the outer diameter of the test sensor 5 so that the test sensor 5 can pass through the through hole 24 and extend out of the fixing member 2.

[0132] One end of the test sensor 5 is connected to the bottom of the housing 11. For example, the top of the test sensor 5 and the bottom of the circuit board shell 112 of the housing 11 are connected by screw threads. Figure 10 As shown, the bottom of the circuit board housing 112 has an internal thread hole, and the top of the test sensor 5 can have an external thread, and the two are connected by threads.

[0133] In one example, the test sensor 5 can be used to test parameters such as pressure, temperature, and flow of the medium at the bottom of the oil pipe. For example, the test sensor 5 can be a pressure sensor for measuring pressure data at the bottom of the oil pipe. In another example, the test sensor 5 can be a temperature sensor for measuring temperature data at the bottom of the oil pipe. In another example, the test sensor 5 can be a flow sensor for measuring flow data of the medium at the bottom of the oil pipe. In another example, the test sensor 5 includes a pressure sensor and a temperature sensor for measuring pressure data and temperature data at the bottom of the oil pipe. In another example, the test sensor 5 includes a pressure sensor and a flow sensor for measuring pressure data and flow data at the bottom of the oil pipe. In another example, the test sensor 5 includes a pressure sensor, a temperature sensor, and a flow sensor for measuring pressure data, temperature data, and flow data at the bottom of the oil pipe.

[0134] The test sensor 5 has a power supply function and a memory function, which can provide power for the test data and can also store the test data for later viewing by technicians.

[0135] The medium in the oil pipe can be gas, liquid, or a mixture of gas and liquid, depending on the oil pipe in the scenario in which the pipe string vibration test tool is used.

[0136] It can be seen that the pipe string vibration test tool can not only be used to test the vibration data of the pipe string, but also can be used to test the pressure, temperature and flow rate at the bottom of the oil pipe.

[0137] It should be noted that if the pipe string vibration test tool does not include the test sensor 5, the bottom of the inner tube 22 does not have a through hole 24. Figure 10 As shown in the structural diagram, if the pipe string vibration test tool includes a test sensor 5, the bottom of the inner tube 22 has a through hole 24, which can be seen in FIG. Figure 11 The structural diagram shown.

[0138] Based on the above structure, during assembly of the string vibration testing tool, the assembled testing device 1 is first installed in the inner tube 22 of the fixture 2. The block 23 is placed in the through-slot 211 of the outer tube 21, with the block 23 protruding from the through-slot 211 and protruding from the outer wall of the outer tube 21. The outer tube 21 of the fixture 2 is then placed over the inner tube 22 and moved to the stopper 221 of the inner tube 22. At this point, the position of the receiving groove 222 is aligned with the through-slot 211 of the outer tube 21. The block 23 is then pushed into the receiving groove 222, with a portion of the block 23 located in the through-slot 211 and the remaining portion in the receiving groove 222. To improve the stability of the outer and inner tubes 21 and 22 during lowering, technicians can connect shear pins between the outer and inner tubes 21 and 22. Afterwards, the fixing cap 31 of the hanger 3 is installed on top of the inner tube 22, and the fishing tool is secured to the grab head 32 of the hanger 3. Then, the tubing string vibration testing tool can be lowered into the oil pipe 4 to be tested by controlling the fishing tool.

[0139] Before lowering the tubing string vibration testing tool to the oil pipe 4 to be tested, the power switch of the tubing string vibration testing tool needs to be turned on to start the testing device 1 .

[0140] When the outer tube 21 is lowered to the bottom of the test tool holder 41, the through groove 211 of the outer tube 21 and the clamping groove 411 of the test tool holder 41 are relative to each other. Due to the limitation of the test tool holder 41, the outer tube 21 no longer moves downward, while the inner tube 22 can pass through the bottom pipe opening of the test tool holder 41 and continue to move downward. Once the inner tube 22 moves relative to the outer tube 21, the shear pin connecting the outer tube 21 and the inner tube 22 breaks due to the shear force, and then the bottom of the inner tube 22 extends out of the bottom pipe openings of the outer tube 21 and the bottom pipe openings of the test tool holder 41 in turn.

[0141] When the inner tube 22 moves relative to the outer tube 21, the positions of the blocking block 23 in the receiving groove 222 and the through groove 211 are misaligned. Then, the inclined wall 223 of the receiving groove 222 can push the blocking block 23 into the blocking groove 411, thereby achieving the connection between the outer tube 21 and the test tool holder 41.

[0142] When the bottom of the hanger 3 moves down to the top of the outer tube 21, it stops moving downward due to the position limit of the outer tube 21, and it can be considered that the tubing string vibration test tool has been lowered to the bottom of the oil pipe 4 to be tested. The technician can then control the fishing tool to be unloaded from the hanger 3 and lift it to the wellhead.

[0143] When the tubing string vibration test tool needs to be removed, the fishing tool can be lowered to the bottom of the oil pipe 4 to be tested, and the fishing tool can grab the grab head 32 of the hanger 3. First, it moves upward a distance. When the inner tube 22 moves to the point where the limiting protrusion 221 contacts the bottom of the outer tube 21, the fishing tool can vibrate the tubing string vibration test tool, causing the clamping block 23 to disengage from the clamping groove 411 of the test tool holder 41 and enter the receiving groove 222. After the clamping block 23 disengages from the clamping groove 411 and enters the receiving groove 222, the fishing tool can drive the hanger 3 upward, and the hanger 3 drives the inner tube 22 and outer tube 21 upward. In this way, the fishing tool can salvage the tubing string vibration test tool from the bottom of the well.

[0144] After the tubing vibration test tool is salvaged from the bottom of the well, the technician can remove the test device 1 from the fixture 2, and then remove the memory card 16 from the test device 1 to read the vibration data recorded on the memory card 16. The data stored on the memory card 16 can then be used to understand the vibration conditions of the oil pipe 4 to be tested at a depth of several kilometers.

[0145] After the tubing vibration test tool is salvaged from the bottom of the well, the technician can also remove the test sensor 5 and read the recorded data from the test sensor 5. For example, the data may be at least one of pressure data, temperature data and flow data.

[0146] Based on the above, the tubing vibration testing tool can be lowered to the bottom of the well several thousand meters below the oil pipeline, and the vibration data of the oil pipeline can be obtained through the vibration sensor in the internal testing device, and the vibration data can be saved in the memory card. Then the technicians periodically read the vibration data of the oil pipeline from the memory card. By analyzing the vibration data of the oil pipeline, they can timely understand the relationship between the vibration frequency and the natural vibration frequency of the oil pipeline, and whether there is a risk of resonance. If the vibration frequency and the natural vibration frequency are relatively close, some parameters of gas production or gas injection can be adjusted, such as adjusting the pressure of gas production or gas injection, or adjusting the speed of gas production or gas injection, etc., to adjust the vibration frequency of the oil pipeline to increase the distance from the natural vibration frequency.

[0147] In an embodiment of the present application, the tubing vibration test tool can be lowered to the bottom of the well several thousand meters below the oil pipeline, and the vibration data of the oil pipeline is obtained through the vibration sensor in the internal testing device, and the vibration data is saved in a memory card. Then, the technician periodically reads the vibration data of the oil pipeline from the memory card. By analyzing the vibration data of the oil pipeline, the current status of the oil pipeline can be understood in a timely manner, which can effectively prevent the occurrence of accidents and improve the safety of natural gas storage.

[0148] The present application also provides a string vibration testing system. Figure 1 And refer to Figure 2 As shown, the system includes a test tubing 4 and the above-mentioned tubing string vibration test tool, the tubing string vibration test tool is in the test tubing 4 and is located at the bottom of the test tubing 4; Figure 2 As shown, the wall of the oil pipe to be tested 4 located above the pipe string vibration testing tool has a through hole 42 serving as an air flow hole for the oil pipe to be tested 4 .

[0149] The air flow holes serve as the air inlet holes of the oil pipe during gas production and as the air outlet holes of the oil pipe during gas injection.

[0150] Typically, the bottom opening of the tubing serves as an airflow hole. However, during gas production, gas from the formation flows out through the perforations in the casing and into the casing space at the bottom of the well. The air then flows into the casing space at a right angle from the bottom of the tubing. During gas injection, the air in the tubing enters the casing space at the bottom of the well through the bottom opening, and then enters the reservoir through the perforations in the casing. This right-angled airflow path results in high airflow resistance and energy consumption.

[0151] In this scheme, if Figure 2As shown, the wall of the test tubing 4 above the tubing string vibration test tool has perforations 42. The number of perforations 42 can be multiple and distributed along the tubing axis. These multiple perforations 42 serve as airflow holes. The positions of the perforations 42 can correspond to the positions of the perforations on the casing. In this case, during gas production, the airflow from the formation through the perforations in the casing can directly enter the perforations 42 in the sidewall of the test tubing 4, or the airflow can enter the test tubing 4 in a streamlined manner. During gas injection, the airflow in the test tubing 4 passes through the perforations 42 in the sidewall and directly enters the perforations in the casing corresponding to the perforations 42, or it can enter the perforations in the casing in a streamlined manner, and finally be injected into the reservoir. This streamlined airflow path can reduce airflow resistance and energy consumption.

[0152] The assembly process and use process of the pipe string vibration testing system can be found in the above description and will not be described in detail here.

[0153] In an embodiment of the present application, the tubing vibration test tool can be lowered to the bottom of the well several thousand meters below the oil pipeline, and the vibration data of the oil pipeline is obtained through the vibration sensor in the internal testing device, and the vibration data is saved in a memory card. Then, the technician periodically reads the vibration data of the oil pipeline from the memory card. By analyzing the vibration data of the oil pipeline, the current status of the oil pipeline can be understood in a timely manner, which can effectively prevent the occurrence of accidents and improve the safety of natural gas storage.

[0154] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A pipe string vibration testing tool, characterized in that: The pipe string vibration test tool comprises a test device (1), a fixing part (2), a hanging part (3) for being grasped by a fishing tool, and a test sensor (5); The test device (1), the fixing member (2) and the hanging member (3) are all made of high-temperature resistant and high-pressure bearing materials; the test device (1) is located in the fixing member (2); the hanging member (3) is located above the test device (1) and the fixing member (2); the test device (1), the fixing member (2) and the hanging member (3) are fixed to each other; the fixing member (2) and the test tool seat (41) of the oil pipe to be tested (4) close to the bottom of the well are detachably mounted; The testing device (1) comprises a housing (11), a battery (12), a conductive rod (13), a circuit board (14), a vibration sensor (15), a memory card (16), and at least one conductive elastic member (19); the battery (12), the conductive rod (13), the circuit board (14), the vibration sensor (15), and the memory card (16) are all located in the housing (11); the battery (12) is electrically connected to the circuit board (14) via the conductive rod (13); at least one electrode of the battery (12) is electrically connected to the conductive rod (13) via the conductive elastic member (19); the vibration sensor (15) and the memory card (16) are both located on the surface of the circuit board (14); The outer wall of the testing device (1) is tightly fitted with the inner wall of the fixing member (2), and the outer wall of the fixing member (2) is tightly fitted with the inner wall of the testing tool holder (41) of the oil pipe to be tested (4). The testing device (1) is capable of testing vibration data of the oil pipe to be tested (4) through the vibration sensor (15) and storing the vibration data through the memory card (16); The fixing member (2) comprises an outer tube (21), an inner tube (22) and a clamping block (23); the inner tube (22) is located in the outer tube (21), and the length of the inner tube (22) is greater than the length of the outer tube (21); the inner tube (22) and the outer tube (21) can slide relative to each other; the bottom of the inner tube (22) has a limiting protrusion (221) for limiting the outer tube (21) from slipping off; The top of the inner tube (22) and the bottom of the suspension member (3) are fixed, and the outer diameter of the bottom of the suspension member (3) is larger than the inner diameter of the top of the outer tube (21), so as to limit the outer tube (21) from slipping off the inner tube (22); The outer diameter of the outer tube (21) is smaller than the inner diameter of the top tube opening of the test tool seat (41), and larger than the inner diameter of the bottom tube opening of the test tool seat (41), and is used to be seated in the test tool seat (41); The outer wall of the inner tube (22) has a receiving groove (222), the tube wall of the outer tube (21) has a through groove (211), and the inner wall of the test tool holder (41) has a clamping groove (411); the receiving groove (222), the through groove (211) and the clamping groove (411) all match the clamping block (23); and the side wall of the receiving groove (222) close to the suspension member (3) is an inclined wall; When the bottom of the outer tube (21) is located at the limiting protrusion (221), the position of the accommodating groove (222) is opposite to the position of the through groove (211), and the clamping block (23) is located in the accommodating groove (222); When the bottom of the outer tube (21) is seated on the bottom of the test tool seat (41), the position of the through slot (211) is opposite to the position of the clamping slot (411); When the bottom of the outer tube (21) is seated on the bottom of the test tool seat (41), and the inner tube (22) continues to move relative to the outer tube (21) toward the bottom of the oil pipe (4) to be tested, the inclined wall of the accommodating groove (222) pushes the clamping block (23) into the clamping groove (411); When the inner tube (22) stops moving relative to the outer tube (21) toward the bottom of the oil pipe (4) to be tested, the clamping block (23) is located in the clamping groove (411) and the through groove (211); The bottom of the fixing member (2) has an axial through hole (24); one end of the test sensor (5) is connected to the bottom of the housing (11); the inner diameter of the through hole (24) is smaller than the outer diameter of the housing (11); or the inner diameter of the through hole (24) is equal to the inner diameter of the inner tube (22) in the fixing member (2); and the outer wall of the housing (11) and the inner wall of the inner tube (22) are fixed; the other end of the test sensor (5) extends out of the fixing member (2) via the through hole (24); and the test sensor (5) is used to test at least one of pressure, temperature and flow.

2. The pipe string vibration testing tool according to claim 1, characterized in that: The testing device further comprises an insulating tube (17), wherein the insulating tube (17) is located in the housing (11), and the conductive rod (13) is located in the insulating tube (17).

3. The pipe string vibration testing tool according to claim 1, characterized in that: The testing device (1) further comprises an upper end head (18), the bottom of the upper end head (18) is connected to the top of the shell (11), and the upper end head (18) is sealed on the top of the shell (11).

4. The pipe string vibration testing tool according to claim 1, characterized in that: The housing (11) comprises a battery housing (111) and a circuit board housing (112), wherein the battery housing (111) and the circuit board housing (112) are connected; The battery (12) and the conductive rod (13) are both located in the battery housing (111), and the circuit board (14) is located in the circuit board housing (112).

5. The pipe string vibration testing tool according to claim 1, characterized in that: The outer wall of the fixing member (2) has a spherical elastic protrusion, and the inner wall of the testing tool seat (41) has a spherical groove adapted to the spherical elastic protrusion; When the fixing member (2) is located in a test tool seat (41) close to the bottom of the well of the oil pipe (4) to be tested and the spherical elastic protrusion and the spherical groove are positioned opposite to each other, the spherical elastic protrusion extends into the spherical groove.

6. The pipe string vibration testing tool according to claim 1, characterized in that: Before the inner tube (22) continues to move relative to the outer tube (21) toward the bottom of the oil pipe (4) to be tested, a shear pin is connected between the inner wall of the outer tube (21) and the outer wall of the inner tube (22).

7. A pipe string vibration testing system, characterized in that: The system comprises an oil pipe to be tested (4) and a tubing string vibration testing tool according to any one of claims 1 to 6, wherein the tubing string vibration testing tool is in the oil pipe to be tested (4) and is located at the bottom of the oil pipe to be tested (4); The wall of the oil pipe (4) to be tested, located above the pipe string vibration testing tool, has a perforation (42) serving as an air flow hole for the oil pipe (4) to be tested.

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