Underground string vibration tester

Abstract

The invention discloses an underground tubular column vibration tester, relates to the technical field of tubular column vibration testing, and solves the technical problem that the normal use of a tubular column is interrupted due to the fact that the tubular column generates large vibration and is possibly damaged in operations such as fracturing and oil testing blowout. Comprising a tubular column casing pipe, and an oil pipe is arranged in the tubular column casing pipe; the monitoring supporting mechanism is installed between the oil pipe and the pipe column casing pipe and comprises a sleeve arranged on the oil pipe in a sleeving mode, an annular guide rail installed at the lower end of the sleeve, an annular shell arranged on the annular guide rail in a sleeving mode and multiple sets of vibration monitoring components installed on the inner wall of the annular shell; the vibration monitoring device can monitor vibration generated when a tubular column works in real time, provide key data to reflect the working condition of the tubular column, effectively prevent potential equipment faults, improve the safety and efficiency of operation, provide important technical support for underground operation, meanwhile, play a role in supporting and stabilizing a tubular column sleeve and an oil pipe, and improve the working efficiency of the tubular column. The working stability of the pipe column is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of pipe string vibration testing, in particular to a downhole pipe string vibration tester. Background Art

[0002] The production tubing used in oil production projects is the main part of the oil production machinery system. The tubing can lift the crude oil in the oil well to the ground. The production tubing is divided into two categories: ordinary crude oil production tubing and heavy oil production tubing.

[0003] The existing pipe string usually has small vibration during normal operation. However, during operations such as fracturing and oil testing and blowdown, the pipe string will produce large vibration, which may cause damage, thereby interrupting the normal use of the pipe string. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art; to this end, the present invention proposes a downhole tubular column vibration tester.

[0005] Downhole pipe string vibration tester, including: A tubing casing, wherein an oil pipe is arranged inside the tubing casing; A monitoring support mechanism installed between the oil pipe and the tubing string casing, the monitoring support mechanism comprising a sleeve sleeved on the oil pipe, an annular guide rail installed at the lower end of the sleeve, an annular shell sleeved on the annular guide rail, multiple groups of vibration monitoring components installed on the inner wall of the annular shell, and multiple groups of extension monitoring components installed on the circumferential surface of the annular shell; The extension monitoring component includes an arc-shaped bonding plate bonded to the inner wall of the pipe column casing, a primary vibration sensor installed on the inner surface of the arc-shaped bonding plate, and a telescopic rod installed on the upper surface of the annular shell; The vibration monitoring component comprises a secondary sensor power supply installed on the inner wall of the annular shell and a vertical pressure sensor installed on the upper and lower inner walls of the annular shell.

[0006] Preferably, the extension monitoring component also includes a protective shell fixed on the inner surface of the arc-shaped bonding plate and sleeved on the outside of the primary vibration sensor, and the inner wall of the protective shell is provided with a primary sensing power supply connected to the primary vibration sensor.

[0007] Preferably, an annular cavity is opened inside the annular shell, the secondary sensing power supply is installed inside the annular cavity, a spherical contact block in contact with the circumferential surface of the annular guide rail is arranged on the inner side of the secondary sensing power supply, a buffer column is arranged between the spherical contact block and the secondary sensing power supply, and a secondary pressure sensor is arranged on the surface of the secondary sensing power supply.

[0008] Preferably, the spherical contact block is sleeved with a fixed circular plate in contact with the end of the secondary pressure sensor, and the two vertical pressure sensors are in contact with the upper and lower surfaces of the annular guide rail respectively.

[0009] Preferably, a fixing block is provided on the inner surface of the arc-shaped laminating plate, an inner rod provided inside the telescopic rod is fixed on the fixing block, and a sealing telescopic tube is sleeved on the inner rod with two ends respectively fixed on the fixing block and the surface of the telescopic rod.

[0010] Preferably, the annular guide rail extends into the annular shell, and a sealing sleeve is provided between the upper end of the sleeve and the upper surface of the annular shell.

[0011] Preferably, a plurality of groups of positioning components for positioning the oil pipe are arranged on the circumference of the inner surface of the upper end of the sleeve, and each group of the positioning components includes two fixed lugs fixed on the inner surface of the sleeve, and a rotating guide plate is arranged inside the two fixed lugs, and a rotating shaft is arranged between the upper end of the rotating guide plate and the fixed lugs.

[0012] Preferably, an arc-shaped rod is arranged between the outer surface of the lower end of the rotating guide plate and the sleeve, and an arc-shaped elastic member with two ends fixed on the rotating guide plate and the surface of the sleeve is sleeved on the arc-shaped rod.

[0013] Preferably, a clamping rod is vertically arranged on the inner surface of the rotating guide plate, and the free end of the clamping rod is spherical and abuts against the surface of the oil pipe.

[0014] Preferably, a plurality of limiting holes are provided on the surface of the arc-shaped rod along the arc direction thereof, and limiting rods with limited positions are provided in the limiting holes.

[0015] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention can monitor the vibration generated by the pipe string in real time during operation, provide key data to reflect the working condition of the pipe string, effectively prevent potential equipment failures, improve the safety and efficiency of operations, and provide important technical support for downhole operations. At the same time, it can support and stabilize the casing and tubing of the pipe string, thereby increasing the working stability of the pipe string.

[0016] (2) The present invention combines the sealed telescopic tube with the telescopic rod, which does not affect the telescopic movement of the internal rod, and can seal the connection between the telescopic rod and the internal rod to prevent liquid from seeping in. At the same time, the sealing sleeve can be used to shield and seal the connection between the annular guide rail and the annular shell, which will not cause liquid to seep in, thereby increasing safety during monitoring.

[0017] (3) The positioning member designed in the present invention can play a role in positioning the oil pipe, and at the same time can buffer the oil pipe body below the installation position of the connecting rod, and further support the oil pipe body while buffering, thereby reducing the vibration amplitude of the oil pipe and increasing the working stability of the oil pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a structural schematic diagram of the downhole pipe string vibration tester of the present invention; Figure 2 A cross-sectional view of a downhole tubular string vibration tester according to the present invention; Figure 3 For the present invention Figure 2 Schematic diagram of the structure of the monitoring support mechanism; Figure 4 For the present invention Figure 3 Schematic diagram of the structure of the extended monitoring component; Figure 5 For the present invention Figure 3 A magnified image of area A; Figure 6 For the present invention Figure 4 Enlarged view of area B; Figure 7 It is an exploded and enlarged view of the sleeve, the annular shell and the annular guide rail of the present invention; Figure 8 For the present invention Figure 2 The structural diagram of the positioning component; Fig. 9 For the present invention Figure 8 A trajectory diagram of the rotation of the rotating guide plate; In the figure: 100, tubing casing; 101, oil pipe; 200, monitoring support mechanism; 201, annular shell; 202, extended monitoring component; 2021, arc-shaped bonding plate; 2022, telescopic rod; 2023, stable seat; 2024, protective shell; 2025, primary vibration sensor; 2026, primary sensor power supply; 2027, fixed block; 2028, sealed telescopic tube; 2029, internal rod; 203, sleeve; 204, vibration monitoring component; 2041, second Level sensing power supply; 2042, spherical contact block; 2043, fixed circular plate; 2044, secondary pressure sensor; 2045, buffer column; 2046, vertical pressure sensor; 205, sealing sleeve; 206, annular guide rail; 207, connecting rod; 208, annular cavity; 300, positioning member; 301, rotating guide plate; 302, fixed lug; 303, rotating shaft; 304, arc rod; 305, arc elastic member; 306, limiting hole; 307, clamping rod. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Embodiment 1 See also Figure 1 - Figure 5 The present application provides a downhole tubular string vibration tester, comprising: A tubing casing 100, wherein an oil pipe 101 is arranged inside the tubing casing 100; A monitoring support mechanism 200 is installed between the oil pipe 101 and the tubing casing 100. The monitoring support mechanism 200 can move and sink into the well together with the tubing. The monitoring support mechanism 200 can be used to monitor the vibration generated when the tubing is working in real time, provide key data to reflect the working condition of the tubing, effectively prevent potential equipment failures, improve the safety and efficiency of operations, and provide important technical support for downhole operations. At the same time, it can support and stabilize the tubing casing 100 and the oil pipe 101, and increase the working stability of the tubing. The monitoring support mechanism 200 includes a sleeve 203 sleeved on the oil pipe 101, an annular guide rail 206 installed at the lower end of the sleeve 203, and an annular shell 201 sleeved on the annular guide rail 206, multiple groups of vibration monitoring components 204 installed on the inner wall of the annular shell 201, and multiple groups of extended monitoring components 202 installed on the circumferential surface of the annular shell 201. The cross section of the annular guide rail 206 is T-shaped. The extended monitoring component 202 includes an arc-shaped bonding plate 2021 bonded to the inner wall of the tubular casing 100, a primary vibration sensor 2025 installed on the inner surface of the arc-shaped bonding plate 2021, and a telescopic rod 2022 installed on the upper surface of the annular shell 201. The extended monitoring component 202 is mainly used to monitor the vibration received on the outer surface of the tubular during the operation of the tubular, and the vibration monitoring component 204 is used to monitor the abnormal twitching of the tubular 101 if there is abnormal twitching or blockage during the twitching of the tubular 101. The external transmission of the monitored data is a prior art and is not described in detail in the document. In summary, the extended monitoring component 202 fits the inner wall of the tubular casing 100, and the four extended monitoring components 202 work simultaneously, which can support and reinforce the tubular casing 100 from the inside out, reduce the impact deformation of the tubular as a whole, and fit the inner wall of the tubular casing 100. The vibration generated by the tubular casing 100 during operation can be monitored by the primary vibration sensor 2025, and the monitored vibration data can be transmitted outward. In addition, the cooperation between the telescopic rod 2022 and the arc-shaped fitting plate 2021 can adapt to tubular casings 100 with different inner diameters, thereby increasing the scope of application.

[0021] The vibration monitoring component 204 includes a secondary sensor power supply 2041 installed on the inner wall of the annular shell 201 and a vertical pressure sensor 2046 installed on the upper and lower inner walls of the annular shell 201 .

[0022] In summary, the vibration monitoring component 204 can be used to further monitor the vibration generated by the operation of the oil pipe 101 and the tubing string casing 100 on the basis of the extended monitoring component 202. For example, in the test phase, when there is no problem with the oil pipe 101, the vibration monitoring component 204 and the extended monitoring component 202 are used to detect the fluctuation range of the outer surface of the tubing string casing 100 when it is vibrated during normal operation, and a normal fluctuation range value is set. At this time, the vibration monitoring component 204 detects that the vibration data transmitted by the extended monitoring component 202 is relatively small and has a floating range value. When the oil pipe 101 has abnormal twitching and the tubing string 100 has no abnormality, the vibration data of the oil pipe 101 monitored by the vibration monitoring component 204 is larger than the floating range value and is transmitted to the extended monitoring component 202. The value monitored by the extended monitoring component 202 is also larger than the vibration value amplitude when the tubing string is working normally. Therefore, the actual application During use, the monitored data will be compared with the vibration data of the tubing when it is working normally. Once the data exceeds the normal fluctuation range (such as abnormal twitching of the oil pipe 101 or abnormal vibration of the entire tubing, both of which will exceed the normal range), a timely reminder will be issued to facilitate maintenance personnel to check and repair. Once the sensors in the two monitoring components are damaged, the vibration cannot be transmitted to each other, and the data uploaded by the sensor is abnormal, then it will be possible to know in time which sensor has a problem, which is convenient for timely detection and brings better results. The vibration of the internal oil pipe 101 and the outside of the tubing can be monitored, and the displacement change caused by the vibration of the oil pipe 101 is used to act on the vertical pressure sensor 2046 and the secondary pressure sensor 2044. The farther the vibration is from, the greater the displacement change it produces, and the greater the displacement, the greater the pressure fluctuation acting on the pressure sensor, thereby further detecting the vibration amplitude generated by the operation of the tubing.

[0023] In this embodiment, preferably, the extended monitoring component 202 also includes a protective shell 2024 fixed on the inner surface of the arc-shaped bonding plate 2021 and sleeved on the outside of the first-level vibration sensor 2025, which plays a role of surrounding and protecting the first-level vibration sensor 2025. The inner wall of the protective shell 2024 is provided with a first-level sensing power supply 2026 connected to the first-level vibration sensor 2025 to supply energy to the first-level vibration sensor 2025. How the first-level vibration sensor 2025 senses and monitors vibration is an existing technology and will not be described in detail here.

[0024] In this embodiment, preferably, an annular cavity 208 is opened inside the annular shell 201, and the cross-section of the annular cavity 208 is T-shaped. The secondary sensing power supply 2041 is installed inside the annular cavity 208, and multiple secondary sensing power supplies 2041 are evenly arranged in the entire annular cavity 208, and the corresponding secondary pressure sensors 2044 are equal in number. A spherical contact block 2042 in contact with the circumferential surface of the annular guide rail 206 is arranged on the inner side of the secondary sensing power supply 2041. The spherical contact block 2042 can not only reduce the friction between the annular guide rail 206, but also cooperate with the annular guide rail 206 to monitor the pressure transmitted due to vibration. A buffer column 2045 is arranged between the spherical contact block 2042 and the secondary sensing power supply 2041. The buffer column 2045 is a rubber column that can elastically deform to buffer the displacement of the spherical contact block 2042 caused by vibration. A secondary pressure sensor 2044 is arranged on the surface of the secondary sensing power supply 2041, which cooperates with the fixed circular plate 2043 to monitor the pressure due to vibration.

[0025] In this embodiment, preferably, a fixed circular plate 2043 in contact with the end of the secondary pressure sensor 2044 is sleeved on the spherical contact block 2042. The spherical contact block 2042 is subjected to pressure, which drives the fixed circular plate 2043 to change its position. The change in the position of the fixed circular plate 2043 generates pressure on the secondary pressure sensor 2044, and the greater the vibration amplitude, the greater the pressure fluctuation generated on the secondary pressure sensor 2044. The two vertical pressure sensors 2046 respectively contact the upper and lower surfaces of the annular guide rail 206, and can monitor the vertical vibration of the annular guide rail 206.

[0026] In summary, when in use, the telescopic rod 2022 works, and the internal rod 2029 works, driving the arc-shaped fitting plate 2021 to move outward close to the inner wall of the pipe column casing 100, and the internal rod 2029 extends, and the sealing telescopic tube 2028 moves and unfolds accordingly, and the sealing telescopic tube 2028 always maintains a sealed state at the connection between the internal rod 2029 and the telescopic rod 2022. When the arc-shaped fitting plate 2021 contacts the inner wall of the pipe column casing 100, multiple arc-shaped fitting plates 2021 contact the inner wall of the pipe column casing 100 at the same time, and the friction resistance generated by the contact is greater than its own gravity, and the inner wall of the pipe column casing 100 is kept in a stretched state, and the work of the pipe column itself will not be affected, because the arc-shaped fitting plate 2021 is always driven by the internal rod 2029 The trend of moving outward against the inner wall of the tubing casing 100 is maintained to achieve a stable installation of the arc-shaped fitting plate 2021, and the upper end of the connecting rod 207 is fixed on the surface of the oil pipe 101. The positioning component 300 positions and supports the oil pipe 101, so that the entire monitoring support mechanism 200 is installed between the tubing casing 100 and the oil pipe 101. If the tubing casing 100 vibrates, the vibration will be transmitted to the arc-shaped fitting plate 2021 that fits its surface, and the secondary pressure sensor 2044 installed on the arc-shaped fitting plate 2021 will monitor the transmitted vibration and transmit the monitored data to the outside. At the same time, combined with the vibration monitoring component 204, the vibration generated by the tubing casing 100 will not only be monitored by the secondary pressure sensor 2044, but also the vibration will be transmitted through the extension The monitoring component 202 is transmitted to the annular shell 201, causing the displacement of the annular shell 201 to change. Even if the tubing string casing 100 has eccentric vibration, the annular shell 201 will be driven to deviate on the annular guide rail 206. They are all annular and can adapt to the irregular eccentric vibration of the tubing string. Once the displacement of the annular shell 201 changes, the spherical contact block 2042 set on the inner wall of the annular shell 201 is driven to deviate and press against the annular guide rail 206. The spherical contact block 2042 is deviated by force and transmits the force to the fixed circular plate 2043. The fixed circular plate 2043 acts on the secondary pressure sensor 2044 because of the force. The secondary pressure sensor 2044 monitors the pressure received. The secondary pressure sensor 2044 monitors the lateral pressure transmitted by the tubing string casing 100 Eccentric vibration, the greater the vibration, the greater the pressure on the secondary pressure sensor 2044. Similarly, for the vertical irregular vibration of the tubing casing 100, when the vibration is transmitted to the annular shell 201, the vertical vibration of the annular shell 201 will cause the vertical pressure sensor 2046 to contact the annular guide rail 206, and the greater the vibration, the greater the pressure generated by the contact between the two, and the greater the pressure fluctuation monitored by the vertical pressure sensor 2046. The monitoring principle of the pressure sensor is the existing technology. Similarly, the sleeve 203 is connected to the oil pipe 101. Therefore, the vibration generated by the oil pipe 101 due to work will also be transmitted to the sleeve 203 and the annular guide rail 206. The annular guide rail 206 will also contact the vertical pressure sensor 2046 and the secondary pressure sensor 2044 due to vibration.The pressure changes caused by vibration are monitored, and the extension monitoring component 202 and the vibration monitoring component 204 are combined to comprehensively monitor the irregular vibration of the tubing casing 100 and the oil pipe 101, thereby monitoring the vibration generated by the tubing operation, transmitting the monitored data to the outside, and observing the working status of the tubing in real time, so as to prevent potential dangers in the equipment operation and increase the safety and stability of the tubing operation.

[0027] Embodiment 2 Reference Figure 6 and Figure 7 , which is the second embodiment of the present invention.

[0028] In this embodiment, preferably, a fixing block 2027 is provided on the inner surface of the arc-shaped bonding plate 2021, a stabilizing seat 2023 which is sleeved on the telescopic rod 2022 is provided on the upper surface of the annular shell 201, an internal rod 2029 arranged inside the telescopic rod 2022 is fixed on the fixing block 2027, the telescopic rod 2022 is a combination of a cylindrical outer shell and an electric rod, an energy storage box for supplying energy to the electric rod is arranged inside the cylindrical outer shell, and a sealed telescopic tube 2028 is sleeved on the internal rod 2029, whose two ends are respectively fixed on the fixing block 2027 and the surface of the telescopic rod 2022, the sealed telescopic tube 2028 is a metal bellows, which neither affects the extension or retraction of the internal rod 2029 nor can it seal the connection between the internal rod 2029 and the telescopic rod 2022, so that liquid infiltration will not occur.

[0029] In summary, when the position of the arc-shaped bonding plate 2021 needs to be changed, when the internal rod 2029 inside the telescopic rod 2022 is extended, the arc-shaped bonding plate 2021 is driven to move outward close to the inner wall of the pipe column casing 100, the internal rod 2029 is extended, and the sealing telescopic tube 2028 moves and unfolds accordingly, and the sealing telescopic tube 2028 always maintains a sealed state at the connection between the internal rod 2029 and the telescopic rod 2022. When the arc-shaped bonding plate 2021 contacts the inner wall of the pipe column casing 100, multiple arc-shaped bonding plates 2021 contact the inner wall of the pipe column casing 100 at the same time, and the friction resistance generated by the contact is greater than its own gravity, thereby achieving a stable installation of the arc-shaped bonding plate 2021. Multiple arc-shaped bonding plates 2021 support and reinforce the inner wall of the pipe column casing 100, and the two are in contact, which is convenient for vibration monitoring of the pipe column casing 100.

[0030] In the present embodiment, preferably, the annular guide rail 206 extends into the annular shell 201, and a sealing sleeve 205 is provided between the upper end of the sleeve 203 and the upper surface of the annular shell 201. The sealing sleeve 205 is an impermeable oil film. The impermeable oil film can seal the connection between the annular guide rail 206 and the annular shell 201 to prevent liquid from penetrating, and the impermeable oil film is in a loose state. The sleeve 203 is mainly T-shaped. Similarly, an impermeable oil film can also be provided between the lower end of the sleeve 203 and the annular shell 201 to fully seal and block the connection between the annular guide rail 206 and the annular shell 201.

[0031] Embodiment 3 Reference Figure 8 and Fig. 9 , which is the third embodiment of the present invention.

[0032] In this embodiment, preferably, a plurality of groups of positioning members 300 for positioning the oil pipe 101 are arranged on the circumference of the inner surface of the upper end of the sleeve 203. The positioning members 300 can be used to position the oil pipe 101, and at the same time, the oil pipe 101 body below the installation position of the connecting rod 207 can be buffered, thereby reducing the vibration amplitude of the oil pipe 101 and increasing the working stability of the oil pipe 101. Each group of positioning members 300 includes two fixing lugs 302 fixed on the inner surface of the sleeve 203, and the two fixing lugs 303 are fixed on the inner surface of the sleeve 203. A rotating guide plate 301 is arranged inside 302, a rotating shaft 303 is arranged between the upper end of the rotating guide plate 301 and the fixed lug 302, an arc rod 304 is arranged between the outer surface of the lower end of the rotating guide plate 301 and the sleeve 203, and an arc elastic member 305 is sleeved on the arc rod 304, with both ends fixed on the rotating guide plate 301 and the surface of the sleeve 203. As the rotating guide plate 301 rotates, the arc elastic member 305 can be squeezed, thereby playing a reverse reset buffering role for the rotating guide plate 301.

[0033] In this embodiment, preferably, a clamping rod 307 is vertically arranged on the inner surface of the rotating guide plate 301, and the free end of the clamping rod 307 is spherical and abuts against the surface of the oil pipe 101. A plurality of limiting holes 306 are opened on the surface of the arc rod 304 along its curvature direction. The arc rod 304 passes through the sleeve 203, and a rubber layer is sleeved on the arc rod 304 to fill the through holes on the sleeve 203. The curvature of the arc rod 304 is consistent with the rotation curvature of the rotating shaft 303. A limiting rod with a limited position is arranged in the limiting hole 306. The limiting rod cooperates with a suitable limiting hole 306 to limit the initial angle of the rotating guide plate 301, change the initial degree of compression of the rotating guide plate 301 on the oil pipe 101, and the arc rod 304 can be replaced with an arc telescopic tube as needed. The arc telescopic tube will not pass through the sleeve 203 and will not cause liquid infiltration.

[0034] In summary, the sleeve 203 is sleeved on the oil pipe 101, and the initial position of the rotating guide plate 301 forms a certain angle with the vertical direction. The lower end of the rotating guide plate 301 can be set to be arc-shaped, and the arc rod 304 extends through the sleeve 203 to a certain length, thereby compressing the arc elastic member 305, so that the arc elastic member 305 is in a suitable rebound force to reset the rotating guide plate 301, and then the limit rod is used to limit the position of the arc rod 304. If the oil pipe 101 vibrates during operation, it will squeeze the rotating guide plate 301, so that the rotating guide The plate 301 rotates slightly around the rotating shaft 303, squeezing the arc-shaped elastic member 305. The rebound tendency of the arc-shaped elastic member 305 has a certain buffering effect on the oil pipe 101. At the same time, when the rotating guide plate 301 rotates slightly due to vibration, the clamping rod 307 on the rotating guide plate 301 rotates slightly downward. The position of the rear end of the ball head end of the clamping rod 307 is closer to the oil pipe 101 than when it is not rotated, thereby supporting the oil pipe 101, reducing the vibration of the oil pipe 101 itself, and increasing the stability and safety of the use of the oil pipe 101.

[0035] Embodiment 4 This embodiment is obtained by combining the first embodiment, the second embodiment and the third embodiment.

[0036] When in use, the extension monitoring component 202 and the vibration monitoring component 204 are combined to perform multi-level monitoring on the vibrations generated by the operation of the tubing casing 100 and the oil pipe 101. The multi-level monitoring data improves the accuracy of judging the tubing vibration, and cooperates with the positioning component 300 to further position the oil pipe 101, thereby increasing the safety and stability of the tubing operation.

[0037] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. Downhole pipe string vibration tester, characterized in that: include: A tubing casing (100), wherein an oil pipe (101) is arranged inside the tubing casing (100); A monitoring support mechanism (200) installed between an oil pipe (101) and a tubular casing (100), the monitoring support mechanism (200) comprising a sleeve (203) sleeved on the oil pipe (101), an annular guide rail (206) installed at the lower end of the sleeve (203), an annular shell (201) sleeved on the annular guide rail (206), multiple groups of vibration monitoring components (204) installed on the inner wall of the annular shell (201), and multiple groups of extension monitoring components (202) installed on the circumferential surface of the annular shell (201); The extension monitoring component (202) comprises an arc-shaped bonding plate (2021) bonded to the inner wall of the pipe column casing (100), a primary vibration sensor (2025) mounted on the inner surface of the arc-shaped bonding plate (2021), and a telescopic rod (2022) mounted on the upper surface of the annular shell (201); The vibration monitoring component (204) comprises a secondary sensing power supply (2041) installed on the inner wall of the annular shell (201) and a vertical pressure sensor (2046) installed on the upper and lower inner walls of the annular shell (201).

2. The downhole tubular string vibration tester according to claim 1, characterized in that: The extended monitoring component (202) further comprises a protective shell (2024) fixed to the inner surface of the arc-shaped bonding plate (2021) and sleeved on the outside of the primary vibration sensor (2025), and a primary sensing power supply (2026) connected to the primary vibration sensor (2025) is provided on the inner wall of the protective shell (2024).

3. The downhole tubular string vibration tester according to claim 1, characterized in that: An annular cavity (208) is provided inside the annular shell (201), the secondary sensing power supply (2041) is installed inside the annular cavity (208), a spherical contact block (2042) in contact with the circumferential surface of the annular guide rail (206) is provided inside the secondary sensing power supply (2041), a buffer column (2045) is provided between the spherical contact block (2042) and the secondary sensing power supply (2041), and a secondary pressure sensor (2044) is provided on the surface of the secondary sensing power supply (2041).

4. The downhole tubular string vibration tester according to claim 3, characterized in that: The spherical contact block (2042) is sleeved with a fixed circular plate (2043) in contact with the end of the secondary pressure sensor (2044), and the two vertical pressure sensors (2046) respectively contact the upper and lower surfaces of the annular guide rail (206).

5. The downhole tubular string vibration tester according to claim 1, characterized in that: A fixing block (2027) is provided on the inner surface of the arc-shaped laminating plate (2021); an internal rod (2029) provided inside the telescopic rod (2022) is fixed on the fixing block (2027); and a sealing telescopic tube (2028) is sleeved on the internal rod (2029) with two ends respectively fixed on the surfaces of the fixing block (2027) and the telescopic rod (2022).

6. The downhole tubular string vibration tester according to claim 1, characterized in that: The annular guide rail (206) extends into the annular shell (201), and a sealing sleeve (205) is sleeved between the upper end of the sleeve (203) and the upper surface of the annular shell (201).

7. The downhole tubular string vibration tester according to claim 1, characterized in that: The circumference of the inner surface of the upper end of the sleeve (203) is provided with a plurality of groups of positioning components (300) for positioning the oil pipe (101), each group of the positioning components (300) comprises two fixing lugs (302) fixed to the inner surface of the sleeve (203), a rotating guide plate (301) is provided inside the two fixing lugs (302), and a rotating shaft (303) is provided between the upper end of the rotating guide plate (301) and the fixing lugs (302).

8. The downhole tubular string vibration tester according to claim 7, characterized in that: An arc-shaped rod (304) is provided between the outer surface of the lower end of the rotating guide plate (301) and the sleeve (203), and an arc-shaped elastic member (305) is sleeved on the arc-shaped rod (304) with its two ends fixed on the surfaces of the rotating guide plate (301) and the sleeve (203).

9. The downhole tubular string vibration tester according to claim 8, characterized in that: A pressing rod (307) is vertically arranged on the inner surface of the rotating guide plate (301); the free end of the pressing rod (307) is spherical and abuts against the surface of the oil pipe (101).

10. The downhole tubular string vibration tester according to claim 9, characterized in that: A plurality of limiting holes (306) are provided on the surface of the arc-shaped rod (304) along the arc direction thereof, and limiting rods with limited positions are arranged in the limiting holes (306).

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