A performance testing device and testing method for a vibration cementing tool

Abstract

The present invention discloses a performance testing device and a testing method for a vibration cementing tool. The performance testing device for the vibration cementing tool comprises a hydraulic pump station, a simulated wellbore, a fixed acceleration sensor and an adjustable acceleration sensor; the hydraulic pump station is used to control the internal pressure of the simulated wellbore through a pressure regulating valve, and is also used to deliver heated drilling fluid to the simulated wellbore and deliver heated mud fluid to the outer wall casing of the simulated wellbore; the fixed acceleration sensor is fixedly installed on the outer wall of the simulated wellbore, and is used to collect the first time domain waveform of the vibration wave generated when the vibration cementing tool to be tested is working; the adjustable acceleration sensor is movably connected to multiple test platforms on the outer wall of the simulated wellbore, and is used to collect the second time domain waveform of the vibration wave generated when the vibration cementing tool to be tested is working. A test platform that meets actual working conditions can be established to achieve the acquisition of vibration parameters and vibration effect evaluation of the vibration cementing tool under actual working conditions.

Description

Technical Field

[0001] The invention relates to the technical field of oil and gas well engineering, and in particular to a performance testing device and a testing method for a vibration cementing tool. Background Art

[0002] In the process of oil extraction, in order to prevent the mixing of oil, gas and water after cementing operations, it is necessary to use vibration cementing tools during cementing operations to improve the density and uniformity of cement slurry and ensure the bonding strength of the interface. Vibration cementing is a method of improving cementing quality by using vibration waves generated by mechanical vibration, hydraulic pulse and hydraulic impact to act on casing, drilling fluid and mud. At present, vibration cementing tools at home and abroad can be divided into hydraulic pulse type, mechanical type, magnetostrictive type, piezoelectric ceramic type, audio type, ground annulus hydraulic type or air pulse type according to the working principle. These vibration cementing tools have a single vibration frequency and cannot achieve mechanical resonance, resulting in a short vibration propagation distance and cannot improve cementing quality over a long distance in the annulus.

[0003] With the development of vibration cementing technology, an automatic optimization downhole vibration cementing tool has higher parameter accuracy and vibration frequency selection in design compared with existing vibration cementing tools. This vibration cementing tool can automatically adjust the vibration frequency during the vibration process, so that the vibration cementing tool and mechanical equipment resonate, effectively solving the problem of short mechanical vibration propagation distance. In order to verify the effectiveness of the vibration cementing tool in actual cementing operations, it is necessary to establish a test platform that fits the actual working conditions, which has become a technical problem that needs to be solved urgently. Summary of the invention

[0004] In view of the above problems, the present invention is proposed to provide a performance testing device and a testing method for a vibration cementing tool that overcomes the above problems or at least partially solves the above problems, and can establish a test platform that conforms to actual working conditions, so as to achieve the acquisition of vibration parameters and evaluation of vibration effects of the vibration cementing tool under actual working conditions.

[0005] In a first aspect, an embodiment of the present invention provides a performance testing device for a vibration cementing tool, comprising a hydraulic pump station, a simulated wellbore, a fixed acceleration sensor, and an adjustable acceleration sensor;

[0006] The hydraulic pump station is used to control the internal pressure of the simulated wellbore through a pressure regulating valve, and is also used to deliver heated drilling fluid to the simulated wellbore and deliver heated mud fluid to the outer wall casing of the simulated wellbore;

[0007] The fixed acceleration sensor is fixedly installed on the outer wall of the simulated wellbore and is used to collect the first time domain waveform of the vibration wave generated when the vibration cementing tool to be tested is working;

[0008] The adjustable acceleration sensor is movably connected to a plurality of test platforms on the outer wall of the simulated wellbore, and is used to collect the second time domain waveform of the vibration wave generated when the vibration cementing tool to be tested is working.

[0009] In a second aspect, an embodiment of the present invention provides a performance testing method for a vibration cementing tool, comprising using any of the above-mentioned performance testing devices for vibration cementing tools to test at least one of the following performances of the vibration cementing tool to be tested:

[0010] The deformation performance and sealing performance of the mechanical system of the vibration cementing tool in a liquid at a first set pressure and a first set temperature;

[0011] The heat resistance, pressure resistance and sealing performance of the electrical system of the vibration cementing tool in the liquid at the second set pressure and the second set temperature;

[0012] The reliability of the automatic frequency sweep function of the vibration cementing tool in the liquid at the third set pressure and the third set temperature;

[0013] The propagation distance of the vibration wave generated by the vibration cementing tool when working in the liquid at the fourth set pressure and the fourth set temperature in the simulated wellbore.

[0014] The beneficial effects of the above technical solution provided by the embodiment of the present invention include at least:

[0015] The performance testing device of the vibration cementing tool provided in the embodiment of the present invention can control the pressure inside the simulated wellbore through the pressure regulating valve of the hydraulic pump station, and can also deliver heated drilling fluid to the simulated wellbore through the hydraulic pump station, and deliver heated mud fluid to the outer wall casing of the simulated wellbore. Therefore, it is possible to establish a test platform that meets the actual working conditions in combination with the actual working conditions, and perform simulation tests on the vibration parameter acquisition and vibration effect evaluation of the vibration cementing tool under the actual working conditions, such as testing the deformation and sealing performance of the mechanical system of the vibration cementing tool in high-temperature and high-pressure liquid; testing the heat resistance, pressure resistance and sealing performance of the electrical system of the vibration cementing tool in high-temperature and high-pressure liquid; testing the reliability of the automatic frequency sweeping function of the vibration cementing tool in high-temperature and high-pressure liquid by using the first time domain waveform generated by the automatic frequency sweeping of the vibration cementing tool collected by the fixed acceleration sensor; and testing the propagation distance of the vibration wave generated by the vibration cementing tool when it is working in the simulated wellbore by using the second time domain waveform collected by the adjustable acceleration sensor. This provides a reference for the application of vibration cementing tools in actual cementing operations, helps to further apply vibration cementing tools in actual cementing operations, ensures cementing quality, and effectively reduces the failure of vibration cementing tools under actual working conditions. At the same time, the device has a simple structure, low cost and easy operation.

[0016] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a structural schematic diagram of a performance testing device for a vibration cementing tool in Embodiment 1 of the present invention;

[0019] Figure 2 This is a structural schematic diagram of a hydraulic pump station in Embodiment 1 of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the control display combination in the first embodiment of the present invention;

[0021] Figure 4 This is a specific implementation flow chart of the performance testing method of the mechanical system of the vibration cementing tool in high temperature and high pressure liquid in the second embodiment of the present invention;

[0022] Figure 5 This is a specific implementation flow chart of the method for testing the performance of the power system of the vibration cementing tool in high-temperature and high-pressure liquid in the second embodiment of the present invention;

[0023] Figure 6 This is a specific implementation flow chart of a reliability test method of an automatic frequency sweeping function of a vibration cementing tool in high-temperature and high-pressure liquid in Embodiment 2 of the present invention;

[0024] Figure 7 This is a specific implementation flow chart of a method for testing the propagation distance of vibration waves generated when a vibration cementing tool works in a high-temperature and high-pressure liquid in the second embodiment of the present invention. DETAILED DESCRIPTION

[0025] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0026] It should be understood that the terms described in the present invention are only for describing special embodiments and are not intended to limit the present invention. In addition, for the numerical range in the present invention, it should be understood that each intermediate value between the upper and lower limits of the scope is also specifically disclosed. Each smaller range between the intermediate value in any stated value or stated range and any other stated value or intermediate value in the described range is also included in the present invention. The upper and lower limits of these smaller ranges can be independently included or excluded in the scope.

[0027] Unless otherwise indicated, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which the invention belongs. Although the present invention describes only preferred methods and materials, any methods and materials similar or equivalent to those described herein may also be used in the implementation or testing of the present invention. All documents mentioned in this specification are incorporated by reference to disclose and describe the methods and / or materials related to the documents. In the event of a conflict with any incorporated document, the content of this specification shall prevail.

[0028] In the description of the present invention, it should be noted that the terms "include", "comprising", "having", "containing", etc. are all open terms, that is, they mean including but not limited to. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0029] In order to solve the problem in the prior art that it is necessary to effectively obtain or evaluate the vibration parameters and vibration effects of the vibration cementing tool, an embodiment of the present invention provides a performance testing device and a testing method for a vibration cementing tool, which can establish a test platform that conforms to actual working conditions and realize the acquisition of vibration parameters and evaluation of vibration effects of the vibration cementing tool under actual working conditions.

[0030] Embodiment 1

[0031] Embodiment 1 of the present invention provides a performance testing device for a vibration cementing tool, the structure of which is as follows: Figure 1 As shown, it includes a hydraulic pump station 1, a simulated wellbore 2, a fixed acceleration sensor 3 and an adjustable acceleration sensor 4.

[0032] The fixed in the fixed acceleration sensor refers to that the installation position of the acceleration sensor is fixed; the adjustable in the adjustable acceleration sensor refers to that the measuring position of the acceleration sensor can be adjusted in real time.

[0033] The fixed acceleration sensor 3 is fixedly installed on the outer wall of the simulated wellbore 2 and is used to collect the first time domain waveform of the vibration wave generated when the vibration cementing tool C to be tested is working.

[0034] The adjustable acceleration sensor 4 is movably connected to a plurality of test platforms 5 on the outer wall of the simulated wellbore 2, and is used to collect the second time domain waveform of the vibration wave generated when the vibration cementing tool C to be tested is working.

[0035] The hydraulic pump station 1 is used to control the internal pressure of the simulated wellbore 2 through a pressure regulating valve, and is also used to deliver heated drilling fluid to the simulated wellbore 2 and deliver heated mud fluid to the outer wall casing of the simulated wellbore 2 .

[0036] In some embodiments, the hydraulic pump station 1 includes a drilling fluid supply assembly and a mud fluid supply assembly.

[0037] For details, see Figure 2 As shown, the drilling fluid supply assembly includes a first pipe joint 101 , a pressure regulating valve 102 , a solenoid valve 103 , a hydraulic pump 104 , a drilling fluid storage tank 105 , a first non-return valve 106 , and a second pipe joint 107 connected by a pipeline 115 .

[0038] The first pipe joint 101 and the second pipe joint 107 of the drilling fluid supply assembly are respectively used to connect to the deformable pipes connected to the two ends of the vibration cementing tool to be tested.

[0039] The solenoid valve 103 is used to control the flow of drilling fluid input into the drilling fluid storage tank 105, the hydraulic pump 104 is used to provide power for the drilling fluid to flow into the drilling fluid storage tank 105 and then into the simulated wellbore 2, and the first one-way valve 106 is used to control the flow of drilling fluid flowing into the simulated wellbore 2.

[0040] The mud liquid supply assembly includes a third pipe joint 108 , a control valve 109 , a mud hydraulic pump 110 , a mud liquid storage tank 111 , a second non-return valve 112 and a fourth pipe joint 113 which are connected via a pipeline 115 .

[0041] The third pipe joint 108 and the fourth pipe joint 113 of the mud liquid supply assembly are respectively used to connect to the deformable pipes connected to the two sides of the casing.

[0042] The control valve 109 is a special control valve that can control the flow of mud into the mud storage tank 111. The mud hydraulic pump 110 is used to provide power for the mud to flow into the mud storage tank 111 and then into the simulated wellbore 2. The second one-way valve 112 is used to control the flow of mud into the casing.

[0043] The drilling fluid storage box 105 is used to store drilling fluid, and the mud liquid storage box 111 is used to store mud liquid. Both are provided with resistance wires 114, which are used to heat the drilling fluid stored in the drilling fluid storage box 105 and the mud liquid stored in the mud liquid storage box 111, respectively.

[0044] Furthermore, thermometers (not shown in the figure) are respectively provided on the outer walls of the drilling fluid storage tank 105 and the mud fluid storage tank 111 .

[0045] The pipeline 115 is a hard pipe capable of ensuring the circulation of high-temperature drilling fluid and mud fluid.

[0046] In some embodiments, the above-mentioned device further includes a control display assembly 6 , and an oscilloscope 601 of the control display assembly 6 is connected to the fixed acceleration sensor 4 via a cable, and is used to display the first time domain waveform collected by the fixed acceleration sensor 4 .

[0047] Furthermore, the control and display combination 6 is also connected to the hydraulic pump station 1 via a cable, and the pressure gauge 602 of the control and display combination 6 is used to display the pressure inside the simulated wellbore 1 .

[0048] The control display combination is used to control the operation of the hydraulic pump station, display the pressure and pressure holding time of the mechanical performance test and the sealing test, and display the frequency change during the automatic frequency sweeping process of the vibration cementing tool. Further, the control display combination 6 also includes a timer 503, a working status indicator light 604 and a switch button 605.

[0049] The switch button 605 is used to switch on the control circuit; the working status indicator light 604 is used to display the current working status of the test device; and the timer 603 is used to time the pressure holding test.

[0050] Optionally, the control display combination may also include other indicator lights or buttons.

[0051] In some embodiments, the above-mentioned device also includes a data acquisition device 7, which is connected to the adjustable acceleration sensor 4 via a cable. The data acquisition device 7 is used to collect the second time domain waveform tested by the adjustable acceleration sensor 4 and send the second time domain waveform to the computing terminal 8.

[0052] In some embodiments, one end of the simulated wellbore is sealed and the other end is unsealed, so that the vibration cementing tool to be tested can be installed in the simulated wellbore; the unsealed end is provided with a fixed end cover 9 and a sealing ring (not shown in the figure) for sealing after the vibration cementing tool to be tested is installed in the simulated wellbore.

[0053] See also Figure 1 As shown, the left end of the simulated wellbore 2 is sealed, and only the deformable tube B used to connect the vibration cementing tool to be tested and the first pipe joint 201 can pass through. The deformable tube is a hose. The right end of the simulated wellbore 2 is a non-sealed end, which is provided with a fixed end cap 9 and a sealing ring.

[0054] After the vibration cementing tool is installed in the simulated wellbore, one end of the vibration cementing tool contacts the closed end of the simulated wellbore, and the other end is fixedly connected to the simulated wellbore 2 through the fixed end cover 9 and sealed by the sealing ring.

[0055] In some embodiments, the test platform 5 is welded to the outer wall of the simulated wellbore 4 .

[0056] The number and spacing of the test platforms 5 can be flexibly set according to the test accuracy requirements.

[0057] In some embodiments, the length of the simulated wellbore can be 4 meters; the number of test platforms 5 can be 10, Figure 1As shown, there are 10 test platforms, including ① to ⑩. The distance between two adjacent test platforms is 0.4 meters, and the distance between the test platform closest to the sealing end of the simulated wellbore 2 and the sealing end is 0.25 meters. The diameter of the simulated wellbore can be set according to the actual wellbore diameter, with a wall thickness of 1.5 mm.

[0058] Optionally, the specific values ​​of the above parameters may also be set to other values.

[0059] The adjustable acceleration sensor 4 can be adsorbed on the test platform 5 by a magnet, and different test points are used to analyze the decreasing characteristics of the vibration wave during the propagation process, and then the propagation distance of the vibration wave can be obtained.

[0060] Embodiment 2

[0061] Embodiment 2 of the present invention provides a performance testing method for a vibration cementing tool, comprising using the performance testing device for the vibration cementing tool to test at least one of the following performances of the vibration cementing tool to be tested:

[0062] The deformation performance and sealing performance of the mechanical system of the vibrating cementing tool in the liquid at the first set pressure and the first set temperature;

[0063] Heat resistance, pressure resistance and sealing performance of the electrical system of the vibration cementing tool in the liquid at the second set pressure and the second set temperature;

[0064] The reliability of the automatic frequency sweep function of the vibration cementing tool in the third set pressure and third set temperature liquid;

[0065] The propagation distance of the vibration wave generated by the vibration cementing tool when working in the liquid at the fourth set pressure and the fourth set temperature in the simulated wellbore.

[0066] The test of each performance or parameter is described in detail as follows:

[0067] (1) The deformation performance and sealing performance of the mechanical system of the vibration cementing tool in high temperature and high pressure liquid.

[0068] For the specific test process, see Figure 4 As shown, the following steps are included:

[0069] Step S41: The vibration cementing tool to be tested is installed in a simulated wellbore of a performance testing device for the vibration cementing tool.

[0070] After the vibration cementing tool is installed in the simulated wellbore, one end contacts the closed end of the simulated wellbore, and the other end is fixedly connected to the simulated wellbore through a fixed end cover and sealed by a sealing ring. Both ends of the vibration cementing tool are connected to the hydraulic pump station through deformable pipes.

[0071] In some embodiments, see Figure 1As shown, the vibration cementing tool is installed in the simulated wellbore 2, the right end face is fixedly connected to the simulated wellbore 2 through the fixed end cover 9 and sealed by the sealing ring, and the left end face is pressed by the pressing force of the right end cover and sealed by the sealing ring.

[0072] Step S42: controlling the internal pressure of the simulated wellbore to be a first set pressure through the pressure regulating valve of the hydraulic pump station, and delivering drilling fluid heated to the first set temperature to the simulated wellbore through the hydraulic pump station.

[0073] The hydraulic pump station is connected to the start control display combination through a cable. The control display combination controls the operation of the hydraulic pump station, delays for 5 minutes, heats the drilling fluid to the first set temperature through a resistance wire, and injects drilling fluid into the simulated wellbore; the internal pressure of the simulated wellbore is controlled to the first set pressure through the pressure regulating valve of the hydraulic pump station.

[0074] The first set temperature and the second set temperature, the third set temperature and the fourth set temperature set in the subsequent test method can be flexibly set according to the actual underground conditions; specifically, the specific values ​​of the four can be the same or different.

[0075] Similarly, the first set pressure and the second set pressure, the third set pressure and the fourth set pressure set in the subsequent test method can be flexibly set according to the actual underground conditions; specifically, the specific values ​​of the four can be the same or different.

[0076] Step S43: After a set time has passed since the pressure inside the simulated wellbore reaches a first set pressure and the temperature reaches a first set temperature, the vibration cementing tool is removed.

[0077] Specifically, the setting time can be 5 minutes; the first setting pressure can be 20MPa to 180MPa. It can be that the vibration cementing tool is held under pressure for 5 minutes at the first setting temperature and 20MPa, 60MPa, 100MPa, 140MPa or 180MPa, respectively. This is to test the deformation performance and sealing performance of the mechanical system of the vibration cementing tool in high-temperature and high-pressure liquids under different temperature and pressure conditions.

[0078] Step S44: Determine the deformation performance and sealing performance of the mechanical system of the vibration cementing tool in the liquid at the first set pressure and the first set temperature according to the deformation and sealing conditions of the mechanical system of the vibration cementing tool after being taken out.

[0079] Specifically, only the deformation performance and sealing performance of the vibration cementing tool mechanical system in the liquid at the first set pressure (180MPa) and the first set temperature can be tested. If the test results show that the deformation performance and sealing performance of the mechanical system are good, there is no need to test the mechanical system performance under lower pressure conditions.

[0080] After each performance or parameter test is completed, the drilling fluid in the simulated wellbore can be recovered to the drilling fluid storage tank by the hydraulic pump, and / or the mud in the simulated wellbore can be recovered to the mud storage tank by the mud hydraulic pump.

[0081] (2) The heat resistance, pressure resistance and sealing performance of the vibration cementing tool power system in high temperature and high pressure liquids.

[0082] For the specific test process, see Figure 5 As shown, the following steps are included:

[0083] Step S51: The vibration cementing tool to be tested is installed in a simulated wellbore of a performance testing device for the vibration cementing tool.

[0084] After the vibration cementing tool is installed in the simulated wellbore, one end contacts the closed end of the simulated wellbore, and the other end is fixedly connected to the simulated wellbore through a fixed end cap and sealed by a sealing ring. Both ends of the vibration cementing tool are connected to the hydraulic pump station through deformable pipes. Connect the cable of the vibration cementing tool.

[0085] Step S52: controlling the internal pressure of the simulated wellbore to be a second set pressure through the pressure regulating valve of the hydraulic pump station, and delivering drilling fluid heated to the second set temperature to the simulated wellbore through the hydraulic pump station.

[0086] Step S53: connecting the internal control circuit of the vibration cementing tool, after a set time, determining the heat resistance and pressure resistance of the electrical system of the vibration cementing tool in the liquid at the second set pressure and the second set temperature according to whether the vibration cementing tool works normally.

[0087] The internal control circuit of the vibration cementing tool may be connected by moving the rubber plug seat downward.

[0088] Step S54: taking out the vibration cementing tool to be tested, and determining the sealing performance of the electrical system of the vibration cementing tool to be tested in the liquid at the second set pressure and the second set temperature according to the sealing condition of the electrical system of the vibration cementing tool to be tested after being taken out.

[0089] Specifically, only the heat resistance, pressure resistance and sealing performance of the vibration cementing tool power system in the second set pressure (180MPa) and the second set temperature liquid can be tested. If the test results show that the heat resistance, pressure resistance and sealing performance of the power system are good, there is no need to test the power system performance under lower pressure conditions.

[0090] The specific implementation steps of (2) above are identical or similar to the specific implementation steps of (1), so they are not described in detail. For details, please refer to the description of the steps in (1).

[0091] (3) Reliability of the automatic frequency sweep function of the vibration cementing tool in the liquid at the third set pressure and the third set temperature.

[0092] For the specific test process, see Figure 6 As shown, the following steps are included:

[0093] Step S61: The vibration cementing tool to be tested is installed in a simulated wellbore of a performance testing device for the vibration cementing tool.

[0094] Step S62: Control the internal pressure of the simulated wellbore to be the third set pressure through the pressure regulating valve of the hydraulic pump station, deliver drilling fluid heated to the third set temperature to the simulated wellbore through the hydraulic pump station, and deliver mud liquid heated to the third set temperature to the simulated wellbore through the hydraulic pump station.

[0095] Step S63: connecting the internal control circuit of the vibration cementing tool so that the control circuit controls the motor to change the rotation speed according to the set rules.

[0096] Step S64: judging the reliability of the automatic frequency sweeping function of the vibration cementing tool in the liquid at the third set pressure and the third set temperature according to the first time domain waveform collected by the fixed acceleration sensor.

[0097] In some embodiments, the acceleration sensor is connected to an oscilloscope on the control display assembly, and by observing the oscilloscope on the control display assembly panel, it is detected whether the automatic frequency sweep function of the vibration cementing tool works normally.

[0098] (4) The propagation distance of the vibration wave generated by the vibration cementing tool when working in the liquid at the fourth set pressure and the fourth set temperature in the simulated wellbore.

[0099] For the specific test process, see Figure 7 As shown, the following steps are included:

[0100] Step S71: The vibration cementing tool to be tested is installed in a simulated wellbore of a performance testing device for the vibration cementing tool.

[0101] Step S72: Control the internal pressure of the simulated wellbore to be the fourth set pressure through the pressure regulating valve of the hydraulic pump station, deliver drilling fluid heated to the fourth set temperature to the simulated wellbore through the hydraulic pump station, and deliver mud liquid heated to the fourth set temperature to the simulated wellbore through the hydraulic pump station.

[0102] Step S73: connecting the internal control circuit of the vibration cementing tool so that the control circuit controls the motor to change the rotation speed according to the set rules.

[0103] Step S74: determining the propagation distance of the vibration wave generated by the vibration cementing tool when working in the liquid at the fourth set pressure and the fourth set temperature in the simulated wellbore according to the second time domain waveform collected by the adjustable acceleration sensor.

[0104] The specific implementation steps of (3) and (4) mentioned above are identical or similar to the specific implementation steps of (1) or (2), so they are not described in detail. For details, please refer to the description of the steps in (1) or (2).

[0105] In some embodiments, an adjustable acceleration sensor is used to perform tests at test points on each test platform (different test points are used to analyze the decreasing characteristics of vibration waves during propagation), and a data acquisition instrument collects test data and feeds it back to a computing terminal. The computing terminal can analyze the vibration data at different measuring points, fit the decreasing characteristic curve of vibration waves with distance, and predict the propagation distance of the vibration wave of the vibration cementing tool in the simulated wellbore during the cementing stage.

[0106] by Figure 1 Taking the test platform in the experiment, that is, there are 10 test points as an example, during the test, the adjustable acceleration sensor is measured from platform No. ⑩ to platform No. ① in sequence, and the measurement time on each platform is 10s.

[0107] In some embodiments, the above-mentioned testing process may be to first test the deformation performance and sealing performance of the mechanical system of the vibration cementing tool in high-temperature and high-pressure liquid; if the deformation performance and sealing performance of the mechanical system in high-temperature and high-pressure liquid are good, then test the heat resistance, pressure resistance and sealing performance of the electrical system of the vibration cementing tool in high-temperature and high-pressure liquid; if the heat resistance, pressure resistance and sealing performance of the electrical system in high-temperature and high-pressure liquid are good, then test the reliability of the automatic frequency sweeping function of the vibration cementing tool in the third set pressure and third set temperature liquid; if the automatic frequency sweeping function is reliable in the third set pressure and third set temperature liquid, then finally test the propagation distance of the vibration wave generated by the vibration cementing tool when working in the fourth set pressure and fourth set temperature liquid in the simulated wellbore.

[0108] It should be understood that the specific order or hierarchy of steps in the disclosed process is an example of an exemplary method. Based on design preferences, it should be understood that the specific order or hierarchy of steps in the process can be rearranged without departing from the scope of protection of the present disclosure. The attached method claims present the elements of the various steps in an exemplary order and are not intended to be limited to the specific order or hierarchy described.

[0109] In the above detailed description, various features are grouped together in a single embodiment to simplify the disclosure. This method of disclosure should not be interpreted as reflecting an intention that the embodiments of the claimed subject matter require more features than are clearly stated in each claim. On the contrary, as reflected in the appended claims, the invention is in a state of having less than all the features of the disclosed individual embodiments. Therefore, the appended claims are hereby expressly incorporated into the detailed description, with each claim standing on its own as a separate preferred embodiment of the invention.

[0110] The above description includes examples of one or more embodiments. Of course, it is impossible to describe all possible combinations of components or methods for the purpose of describing the above embodiments, but it should be recognized by those skilled in the art that the various embodiments may be further combined and arranged. Therefore, the embodiments described herein are intended to cover all such changes, modifications and variations that fall within the scope of protection of the appended claims. In addition, with respect to the term "comprising" used in the specification or claims, the word is covered in a manner similar to the term "including", just as "including," is explained as a transitional word in the claims. In addition, any term "or" used in the specification of the claims is intended to mean "non-exclusive or".

Claims

1. A performance testing method for a vibration cementing tool, characterized in that: include: The performance testing device for the vibration cementing tool is used to test at least one of the following properties of the vibration cementing tool to be tested: The deformation performance and sealing performance of the mechanical system of the vibration cementing tool in a liquid at a first set pressure and a first set temperature; the heat resistance, pressure resistance and sealing performance of the electrical system of the vibration cementing tool in a liquid at a second set pressure and a second set temperature; the reliability of the automatic frequency sweep function of the vibration cementing tool in a liquid at a third set pressure and a third set temperature; the propagation distance of the vibration wave generated by the vibration cementing tool when working in a liquid at a fourth set pressure and a fourth set temperature in a simulated wellbore; Wherein, the performance test device includes a hydraulic pump station, a simulated wellbore, a fixed acceleration sensor, an adjustable acceleration sensor, a control display combination and a data acquisition instrument; The hydraulic pump station is used to control the internal pressure of the simulated wellbore through a pressure regulating valve, and is also used to deliver heated drilling fluid to the simulated wellbore and deliver heated mud fluid to the outer wall casing of the simulated wellbore; The fixed acceleration sensor is fixedly installed on the outer wall of the simulated wellbore and is used to collect the first time domain waveform of the vibration wave generated when the vibration cementing tool to be tested is working; The adjustable acceleration sensor is movably connected to a plurality of test platforms on the outer wall of the simulated wellbore, and is used to collect a second time domain waveform of a vibration wave generated when the vibration cementing tool to be tested is working; The oscilloscope of the control-display combination is connected to the fixed acceleration sensor via a cable, and is used to display the first time domain waveform collected by the fixed acceleration sensor; the control-display combination is also connected to the hydraulic pump station via a cable, and the pressure gauge of the control-display combination is used to display the pressure inside the simulated wellbore; The data acquisition instrument is connected to the adjustable acceleration sensor via a cable, and is used to acquire the second time domain waveform and send the second time domain waveform to a computing terminal.

2. The method according to claim 1, characterized in that Testing the deformation performance and sealing performance of the mechanical system of the vibration cementing tool in a liquid at a first set pressure and a first set temperature, specifically comprising: The vibration cementing tool is installed in a simulated wellbore of a performance testing device for the vibration cementing tool, the internal pressure of the simulated wellbore is controlled to be a first set pressure by the pressure regulating valve of the hydraulic pump station, drilling fluid heated to a first set temperature is transported to the simulated wellbore by the hydraulic pump station, and the vibration cementing tool is taken out after a set time from when the pressure inside the simulated wellbore reaches the first set pressure and the temperature reaches the first set temperature, and the deformation performance and sealing performance of the mechanical system of the vibration cementing tool in the liquid at the first set pressure and the first set temperature are determined based on the deformation and sealing conditions of the mechanical system of the vibration cementing tool after being taken out.

3. The method according to claim 1, characterized in that Testing the heat resistance, pressure resistance and sealing performance of the electrical system of the vibration cementing tool in the liquid at the second set pressure and the second set temperature, specifically including: The vibration cementing tool is installed in a simulated wellbore of the performance testing device of the vibration cementing tool, the internal pressure of the simulated wellbore is controlled to be a second set pressure through the pressure regulating valve of the hydraulic pump station, and the drilling fluid heated to the second set temperature is delivered to the simulated wellbore through the hydraulic pump station; The internal control circuit of the vibration cementing tool is turned on, and after a set time, the heat resistance and pressure resistance of the electrical system of the vibration cementing tool in the liquid at a second set pressure and a second set temperature are determined according to whether the vibration cementing tool works normally; The vibration cementing tool to be tested is taken out, and the sealing performance of the electrical system of the vibration cementing tool to be tested in the liquid at the second set pressure and the second set temperature is determined according to the sealing condition of the electrical system of the vibration cementing tool to be tested after being taken out.

4. The method according to claim 1, characterized in that Testing the reliability of the automatic frequency sweep function of the vibration cementing tool in the liquid at the third set pressure and the third set temperature, specifically includes: The vibration cementing tool is installed in a simulated wellbore of the performance testing device of the vibration cementing tool, the internal pressure of the simulated wellbore is controlled to be a third set pressure through the pressure regulating valve of the hydraulic pump station, the drilling fluid heated to the third set temperature is delivered to the simulated wellbore through the hydraulic pump station, and the mud liquid heated to the third set temperature is delivered to the simulated wellbore through the hydraulic pump station; The internal control circuit of the vibration cementing tool is turned on so that the control circuit controls the motor to change the speed according to the set rules, and the reliability of the automatic frequency sweeping function of the vibration cementing tool in the liquid with the third set pressure and the third set temperature is judged according to the first time domain waveform collected by the fixed acceleration sensor.

5. The method according to claim 1, characterized in that Testing the propagation distance of the vibration wave generated by the vibration cementing tool when working in the liquid at the fourth set pressure and the fourth set temperature in the simulated wellbore specifically includes: The vibration cementing tool is installed in a simulated wellbore of the performance testing device of the vibration cementing tool, the internal pressure of the simulated wellbore is controlled to be a fourth set pressure through the pressure regulating valve of the hydraulic pump station, the drilling fluid heated to a fourth set temperature is delivered to the simulated wellbore through the hydraulic pump station, and the mud liquid heated to a fourth set temperature is delivered to the simulated wellbore through the hydraulic pump station; The internal control circuit of the vibration cementing tool is turned on so that the control circuit controls the motor to change the speed according to the set rules, and the propagation distance of the vibration wave generated by the vibration cementing tool when working in the liquid at the fourth set pressure and the fourth set temperature in the simulated wellbore is determined according to the second time domain waveform collected by the adjustable acceleration sensor.

6. The method according to claim 1, characterized in that The control display combination also includes a timer, a working status indicator light and a switch button.

7. The method according to claim 1, characterized in that The hydraulic pump station includes a drilling fluid supply assembly and a mud fluid supply assembly; The drilling fluid supply assembly includes a first pipe joint, a pressure regulating valve, a solenoid valve and a hydraulic pump, a drilling fluid storage tank and a first non-return valve and a second pipe joint connected by a pipeline; The mud liquid supply assembly comprises a third pipe joint, a control valve, a mud hydraulic pump, a mud liquid storage tank, a second one-way valve and a fourth pipe joint connected by pipelines; The drilling fluid storage box and the mud fluid storage box are both provided with resistance wires.

8. The method according to claim 7, characterized in that The first pipe joint and the second pipe joint of the drilling fluid supply assembly are respectively used to be connected to the deformable pipes connected to the two ends of the vibration cementing tool to be tested.

9. The method according to claim 7, characterized in that The third pipe joint and the fourth pipe joint of the mud liquid supply assembly are respectively used to connect with the deformable pipes connected to the two sides of the casing.

10. The method according to any one of claims 1 to 9, characterized in that: One end of the simulated wellbore is sealed and the other end is unsealed; The non-sealed end is provided with a fixed end cover and a sealing ring, which are used for sealing after the vibration cementing tool to be tested is installed in the simulated wellbore.

11. The method according to any one of claims 1 to 9, characterized in that: The simulated wellbore length is 4 meters; The distance between two adjacent test platforms is 0.4 meters, and the distance between the test platform closest to the sealing end of the simulated wellbore and the sealing end is 0.25 meters.

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