WO2023108323A1

WO2023108323A1 - Double-table vibration test apparatus

Info

Publication number: WO2023108323A1
Application number: PCT/CN2021/137360
Authority: WO
Inventors: 王中兴; 裴仁忠; 张文秀; 张天信; 杨永友; 赵丹
Original assignee: 中国科学院地质与地球物理研究所
Priority date: 2021-12-13
Filing date: 2021-12-13
Publication date: 2023-06-22

Abstract

A double-table vibration test apparatus, comprising two auxiliary apparatuses and two vibration apparatuses (60), wherein each auxiliary apparatus comprises: a lifting/lowering device (10) provided with a lifting/lowering part (11); and a sliding member (20) assembled on the lifting/lowering part (11), the sliding member (20) sliding with respect to the lifting/lowering part (11) in the longitudinal direction. A drilling tool is lifted by the two auxiliary apparatuses, so that the weight of the drilling tool does not exceed the maximum bearing capacity of the vibration apparatuses (60). According to the test apparatus, the vibration apparatuses (60) are not susceptible to damage, and during a vibration test process, the drilling tool is not susceptible to overturning.

Description

A double-stage vibration test device

cross reference

This application is based on a Chinese patent application with application number 202011590537.X and a filing date of December 29, 2020, and claims the priority of this Chinese patent application. The entire content of this Chinese patent application is hereby incorporated by reference into this application.

technical field

The present application relates to the technical field of vibration testing of downhole tools, in particular to a dual-stage vibration testing device.

Background technique

The intelligent drilling guide system is a relatively advanced drilling and logging tool in the petroleum field at present. When working in the downhole, it faces a working environment with strong vibration and strong impact. Vibration simulation test to verify the environmental adaptability and reliability of the instrument. For the vibration test of downhole tools, the commonly used method at present is to directly fix the instrument under test on the vibration table through fixtures for vibration test. Since the downhole tool and the vibration table are connected by a ball head, the ball head is a movable structure with a certain deflection angle. Therefore, the downhole tool cannot be stably fixed on the vibration table after being connected by the fixture and the ball head, so there is a risk that the downhole tool is easy to overturn; in addition, during the vibration test, if the design test conditions are greater than the bearing capacity of the ball head or the vibration table During the test, it is easy to damage the ball head and the vibrating table. For the curved downhole tool, it cannot be guaranteed to be in a horizontal plane with the vibrating table, that is, the ball head has a deflection angle, and it is easy to damage the ball head and the vibrating table during the vibration test.

Contents of the invention

The purpose of this application is to provide a dual-stage vibration test device that can prevent the downhole tool from overturning and the vibration device from being damaged during the vibration test.

In order to solve the above problems, the embodiment of the present application provides a dual-table vibration test device, including: two auxiliary devices and two vibration devices, wherein the auxiliary device includes: lifting equipment, provided with lifting parts; sliding parts, The sliding part is assembled on the lifting part, and the sliding part slides relative to the lifting part along the longitudinal direction; the elastic part provides force for the sliding part to slide upward.

Further, the lifting part is provided with a guide hole; the axial direction of the guide hole is set along the longitudinal direction; the slider is fitted in the guide hole and slides relative to the lifting part along the longitudinal direction.

Further, grooves are provided on the inner wall of the guide hole or the surface of the sliding member, and balls are arranged in the grooves.

Further, the groove is arranged around the axial direction of the guide hole and arranged along the axial direction.

Further, the elastic member is a spring; the spring is sleeved on the sliding member, so that the spring expands and contracts in the longitudinal direction.

Further, the sliding member is a sliding rod.

Further, the slider is provided with a clamp for clamping the drilling tool.

The above-mentioned technical solution of the present application has the following beneficial technical effects: the weight of the drilling tool will not exceed the maximum load-bearing capacity of the vibrating device through two auxiliary devices to support the drilling tool, so that the vibrating device is not easily damaged, and during the vibration test, The drilling tool is not easy to overturn. In addition, by adjusting the position and height of the two auxiliary devices and the drilling tool, the natural frequency of the system composed of the auxiliary device, drilling tool and vibration device can be adjusted to avoid the resonance frequency during the vibration test.

Description of drawings

Fig. 1 is the structural representation of a kind of double platform vibration test device in the embodiment of the application;

Fig. 2 is a schematic structural view of the auxiliary device in the embodiment of the present application;

Fig. 3 is a schematic diagram of the connecting structure of the sliding member, the guide hole and the ball in the embodiment of the present application.

Reference signs:

10: lifting platform; 20: limit frame; 30: sliding rod; 40: lifting component 50: spring; 60: ball; 70: vibration device.

Detailed ways

In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with specific implementations and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only, and are not intended to limit the scope of the application. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present application.

A schematic structural diagram according to an embodiment of the present application is shown in the accompanying drawings. The figures are not drawn to scale and certain details may have been omitted for the sake of clarity. The various regions, shapes, and their relative sizes and positional relationships shown in the figure are only exemplary, and may deviate due to manufacturing tolerances or technical limitations in practice, and those skilled in the art may Regions/layers with different shapes, sizes, relative positions can be additionally designed.

Apparently, the described embodiments are some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

In addition, the technical features involved in different embodiments of the present application described below may be combined as long as they do not constitute conflicts with each other.

Hereinafter, the present application will be described in more detail with reference to the accompanying drawings. In the various figures, identical elements are indicated with similar reference numerals. For the sake of clarity, various parts in the drawings have not been drawn to scale.

Fig. 1 is a schematic structural diagram of a dual-stage vibration test device in an embodiment of the present application.

Fig. 2 is a schematic structural diagram of an auxiliary device in an embodiment of the present application.

In the embodiment of the present application, as shown in Figure 1, a double-table vibration test device is provided, which mainly includes two auxiliary devices and two vibration devices 60; wherein, as shown in Figure 2, the auxiliary devices mainly include lifting equipment 10, The sliding part 20 and the elastic part 30. The lifting device 10 is provided with a lifting part; the sliding part 20 is assembled on the lifting part, and the sliding part 20 slides relative to the lifting part along the longitudinal direction; the elastic part 30 slides upward to provide force.

The drilling tool is a slender cylinder, the instrument length is 2-9m, the diameter is 172-192mm, and the weight is 500-1500kg. According to the test requirements, a full-scale drilling tool vibration test is required.

Specifically, the two auxiliary devices are arranged on the horizontal bottom surface and at the same height, and the two auxiliary devices are respectively located on opposite sides of the vibrating device 60, and the distance from the vibrating device 60 is equal, and the vibrating device 60 is located at a certain height, so that The drilling tool is horizontally arranged on the two auxiliary devices and the vibrating device 60 , and the two auxiliary devices provide auxiliary supporting force so that the drilling tool will not exceed the maximum load capacity of the vibrating device 60 .

The lower part of the auxiliary device is a lifting device. The lifting device is provided with a lifting part (lifting table), which lifts in the longitudinal direction. The sliding part 20 is slidably connected with the lifting part. The drilling tool is assembled on the sliding part 20, and the sliding part 20 vibrates synchronously with the vibration of the drilling tool, so that the sliding part 20 slides relative to the lifting part along the longitudinal direction. When the drilling tool vibrates downward, the sliding part 20 slides downward. After the elastic part 30 is compressed to a certain amount, The elastic force of 30 releases the two auxiliary devices to balance the force on the drilling tool, so that it is not easy to tilt or even overturn during the vibration test.

In some embodiments, as shown in FIG. 3 , a guide hole 12 is provided on the lifting part; the axial direction of the guide hole 12 is arranged along the longitudinal direction; the slider 20 is assembled in the guide hole 12 and is opposite to the lifting part along the longitudinal direction. slide.

Specifically, a support can be provided on the lifting part, and the support is provided with a guide hole 12. The axial direction of the guide hole 12 is arranged along the longitudinal direction, and is located on the center line of the auxiliary device. The guide hole 12 is equipped with a slider 20, and the guide hole 12 12 is compatible with the sliding piece 20, the guide hole 12 can be a through hole or a blind hole, and the sliding piece 20 can slide into the guide hole 12, that is, the inside of the bracket.

In some embodiments, the inner wall of the guide hole 12 is provided with a groove, and the ball 40 is arranged in the groove.

Specifically, the inner wall of the guide hole 12 is provided with at least one groove for accommodating the balls 40, a plurality of balls 40 are evenly arranged in the grooves, the grooves are compatible with the balls 40, and a part of the balls 40 is located in the grooves , the other part of the ball 40 is exposed from the groove, and the slider 20 will contact the part of the ball 40 exposed from the groove during the sliding process, and make the ball 40 roll in place in the groove, so that the slider 20 slides along the ball 40 . The purpose of setting the ball 40 is to eliminate the friction force between the slider 20 and the inner wall of the guide hole 12. The friction force between the slider 20 and the guide hole 12 will hinder the synchronous vibration of the slider 20 and the drilling tool, and the vibration of the drilling tool will drive the sliding When the member 20 slides, the kinetic energy of the sliding member 20 will be converted into internal energy through friction, which will weaken the vibration effect of the drilling tool and make it unable to vibrate according to the preset frequency, failing to achieve the effect of the vibration test.

In some embodiments, grooves are arranged on the surface of the sliding member 20 , and balls 40 are arranged in the grooves.

Specifically, the surface of the slider 20 is provided with at least one groove for accommodating the balls 40, a plurality of balls 40 are evenly arranged in the groove, the groove is compatible with the balls 40, and a part of the balls 40 is located in the groove , the other part of the ball 40 is exposed to the groove, and the part of the ball 40 exposed to the groove of the slider 20 will contact the inner wall of the guide hole 12 during the sliding process, and make the ball 40 roll in place in the groove, that is, the slider 20 utilizes the ball 40 slides on the inner wall of the guide hole 12.

In some embodiments, the groove is arranged around the axial direction of the guide hole 12 and is arranged along the circumferential direction.

Specifically, the groove surrounds the axial setting of the guide hole 12 to form an annular groove, and is arranged along the circumferential direction. The groove bottom of the annular groove is arranged toward the axial direction of the guide hole 12. The member 20 slides along the axial direction of the guide hole 12 .

In some embodiments, the sliding member 20 is a sliding rod.

In some embodiments, the sliding part 20 is provided with a connecting part for connecting a drilling tool.

In some embodiments, the slider 20 is provided with a clamp 50 for clamping the drilling tool.

Specifically, a clip 50 is provided at one end of the sliding rod away from the lifting part, and the other end extends into the guide hole 12 .

In some embodiments, a support platform is provided on the connecting member for supporting the drilling tool.

Specifically, the end of the sliding rod away from the lifting part is provided with a pallet, and the other end extends into the guide hole 12 .

In some embodiments, the elastic member 30 is a spring; the spring is sleeved on the sliding member 20 so that the spring stretches longitudinally.

The spring is sheathed on the slider 20 so that the telescopic direction of the spring is the same as the sliding direction of the slider 20. One end of the spring is connected to the aforementioned bracket, and the other end is connected to the aforementioned fixture 50 or the bracket, so that the spring stretches longitudinally.

In some embodiments, the auxiliary device also includes an alignment device (not shown in the figure), through which the two auxiliary devices are located on the same vertical plane.

Specifically, the alignment device is an optical sensor, and is provided with a transmitting end and a receiving end. The transmitting end transmits a signal to the receiving end of another alignment device, and the receiving end receives the signal transmitted from the transmitting end of another alignment device.

In some embodiments, the vibrating device 60 includes a vibrating table and a jig, and the jig is connected with the vibrating table through a ball head. Among them, the vibration table is used to provide vibration excitation; the fixture is connected between the drilling tool and the ball head (mechanical decoupling device) for vibration transmission; the ball head is used to eliminate or reduce the impact of the mechanical coupling movement of the vibration table .

In some embodiments, the vibrating device 60 further includes an alignment sensor (not shown in the figure).

Specifically, each vibrating device 60 is provided with two alignment sensors, and the two alignment sensors are respectively arranged on opposite sides of the vibrating device 60 , so that the centerlines of the two alignment sensors and the vibrating device 60 are located on the same vertical plane. Through the alignment sensors of the two vibrating devices 60 and the alignment devices of the two auxiliary devices, the centerlines of the two vibrating devices 60 and the two auxiliary devices are located on the same vertical plane.

In a preferred embodiment, two vibrating devices 60 are provided, and the relative positions of the two vibrating devices 60 should be adjustable. Compared with the single-vibration device vibration test method, the double-vibration device 60 vibration test method has more uniform excitation, can realize different test conditions, and can provide greater thrust. The two vibration devices 60 perform unidirectional excitation at different positions of the test piece. Vibration test. The two auxiliary devices are arranged on opposite sides of the two vibrating devices 60 respectively, so that the centerlines of the two auxiliary devices and the two vibrating devices 60 are located on the same vertical plane. Wherein, the two vibrating devices 60 keep the platform height consistent during the test.

In some embodiments, the strength safety factor of the auxiliary device and the drilling tool is greater than 4; the frequency of the system composed of the auxiliary device and the drilling tool is lower than 1/3 of the lower limit of the designed test frequency.

Specifically, by adjusting the position of the auxiliary device and the vibrating device (that is, the position where the auxiliary device lifts the drilling tool, the two auxiliary devices are relatively or move towards each other) and the force (that is, the length of the spring is changed by adjusting the height of the lifting part, Thereby changing the upward thrust received by the drilling tool) to adjust the strength safety factor of the auxiliary device and the drilling tool and the frequency of the system composed of the auxiliary device, the drilling tool and the vibrating device, so as to avoid that its resonance frequency is not within the frequency range of the test design.

In some embodiments, the drilling tool vibration test device further includes a vibration control system and a vibration measurement and analysis system. The vibration control system is used to control the vibration test according to the specified test conditions to achieve the expected vibration response; the vibration measurement and analysis system is used for vibration data collection, analysis and processing.

The above technical solution of the present application has the following beneficial technical effects:

Lift the drilling tool with two auxiliary devices, so that the weight of the drilling tool will not exceed the maximum load-bearing capacity of the vibrating device, so that the vibrating device is not easily damaged, and during the vibration test, the drilling tool is not easy to overturn. In addition, by adjusting the two The position of the auxiliary device and the drilling tool can adjust the frequency of the system composed of the auxiliary device, the drilling tool and the vibration device, so as to avoid the resonance frequency and carry out the test. The present application has been described above with reference to the embodiments of the present application. However, these examples are for illustrative purposes only and are not intended to limit the scope of the application. The scope of the application is defined by the claims appended hereto and their equivalents. Those skilled in the art can make various substitutions and modifications without departing from the scope of the present application, and these substitutions and modifications should all fall within the scope of the present application.

Claims

A double-table vibration test device, comprising:

Two auxiliary devices and two vibration devices (60); wherein,

The auxiliary equipment includes:

The lifting device (10) is provided with a lifting part (11);

a sliding part (20), which is assembled on the lifting part (11), and the sliding part (20) slides relative to the lifting part (11) along the longitudinal direction;

The elastic member (30) provides force for the sliding member (20) to slide upward.
The double-table vibration test device according to claim 1, wherein,

The lifting part (11) is provided with a guide hole (12);

The axial direction of the guide hole (12) is arranged along the longitudinal direction;

The slider (20) is fitted in the guide hole (12) and slides relative to the lifting part (11) along the longitudinal direction.
The double-table vibration test device according to claim 2, wherein,

The inner wall of the guide hole (12) or the surface of the slider (20) is provided with a groove, and a ball (40) is arranged in the groove.
The double-table vibration test device according to claim 3, wherein,

The groove is arranged around the axial direction of the guide hole (12) and is arranged along the circumferential direction.
The double-table vibration test device according to claim 1, wherein,

The elastic member (30) is a spring;

The spring is sleeved on the sliding part (20), so that the spring expands and contracts in the longitudinal direction.
The double-table vibration test device according to claim 1, wherein,

The sliding part (20) is a sliding rod.
The dual-table vibration test device according to any one of claims 1-6, wherein,

The slider (20) is provided with a jig (50) for clamping the drilling tool.