CN113588249A - Eccentric ware and centralizer class instrument fatigue test equipment - Google Patents
Eccentric ware and centralizer class instrument fatigue test equipment Download PDFInfo
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- CN113588249A CN113588249A CN202111026892.9A CN202111026892A CN113588249A CN 113588249 A CN113588249 A CN 113588249A CN 202111026892 A CN202111026892 A CN 202111026892A CN 113588249 A CN113588249 A CN 113588249A
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- 238000009661 fatigue test Methods 0.000 title claims abstract description 45
- 238000004088 simulation Methods 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 13
- 230000008569 process Effects 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 30
- 239000000463 material Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/005—Testing of complete machines, e.g. washing-machines or mobile phones
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention relates to a fatigue test device for an eccentric device and a centralizer instrument, which comprises: the well wall simulation device comprises a cam assembly and a cam driving device, wherein the driving end of the cam driving device is connected with the cam assembly and is used for driving the cam assembly to rotate; the driving end of the longitudinal adjusting device is detachably connected with the cam assembly and is used for adjusting the height of the cam assembly in the vertical direction; and the instrument fixing device is arranged below the cam component and used for placing and fixing the instrument to be tested. The profile surface of the cam component at least comprises a plurality of first curved surfaces, second curved surfaces and third curved surfaces, wherein the first curved surfaces, the second curved surfaces and the third curved surfaces are different in curvature, the first curved surfaces are used for simulating cavity surfaces of a well wall, the second curved surfaces are used for simulating convex surfaces of the well wall, and the third curved surfaces are used for simulating smooth surfaces of the well wall. The fatigue testing equipment for the eccentric device and the centralizer instruments has the advantages of simple structure, convenience in operation and wider applicability, so that comprehensive fatigue detection of the eccentric device and the centralizer instruments is guaranteed.
Description
Technical Field
The invention belongs to the field of testing of petroleum logging instruments, and particularly relates to fatigue testing equipment for eccentric and centralizer instruments applied to a logging instrument.
Background
With the rapid development of industries such as petroleum, natural gas and the like, a logging instrument is an industry essential instrument, wherein auxiliary instruments of a centralizer type and an eccentric type are of a type with high use frequency, and due to process problems such as material fatigue or heat treatment and the like, the instrument can be broken in a logging process, so that accidents such as instrument jamming, arch piece breaking, fragment falling into a well and the like are easily caused, and once the accidents occur, huge economic loss is easily caused.
At present, the normative of the test of auxiliary instruments of centralizer and eccentric type among the prior art is relatively poor, can't satisfy the fatigue test of multiple wall of a well characteristic. Meanwhile, according to different manufacturers, the test strength and the test result may have deviation, and devices for comprehensively testing the fatigue of the instruments are rarely available in the market, so that the instruments cannot be comprehensively tested before logging operation.
Disclosure of Invention
In order to solve all or part of the problems, the invention aims to provide fatigue testing equipment for an eccentric device and a centralizer instrument, which is applied to a logging instrument, so that the fatigue testing equipment has the advantages of simple structure, convenience in operation and wider applicability, and can improve the testing efficiency and the uniformity of testing results, thereby ensuring comprehensive fatigue detection of the eccentric device and the centralizer instrument.
The invention relates to a fatigue test device for an eccentric device and a centralizer instrument, which comprises: the well wall simulation device comprises a cam assembly and a cam driving device, wherein the driving end of the cam driving device is connected with the cam assembly and is used for driving the cam assembly to rotate; the driving end of the longitudinal adjusting device is detachably connected with the cam assembly and is used for adjusting the height of the cam assembly in the vertical direction; and the instrument fixing device is arranged below the cam component and used for placing and fixing the instrument to be tested. The profile surface of the cam component at least comprises a plurality of first curved surfaces, second curved surfaces and third curved surfaces, wherein the first curved surfaces, the second curved surfaces and the third curved surfaces are different in curvature, the first curved surfaces are used for simulating cavity surfaces of a well wall, the second curved surfaces are used for simulating convex surfaces of the well wall, and the third curved surfaces are used for simulating smooth surfaces of the well wall.
Further, the cam assembly comprises a hub portion and a rim portion, the hub portion is detachably connected with the driving end of the longitudinal adjusting device, the rim portion is detachably sleeved on the hub portion, and the contour surface is configured to be an outer contour surface of the hub portion.
Further, the material of the hub portion is metal.
The equipment comprises an equipment shell, a well wall simulation device and a control device, wherein the equipment shell is internally provided with a high-position mounting platform; the longitudinal adjustment device includes: the first telescopic mechanism is arranged below the high-position mounting platform, and a telescopic rod of the first telescopic mechanism penetrates through the high-position mounting platform along the vertical direction to form a telescopic rod driving end; the connecting swing arm is provided with a cam driving device. Wherein, the one end of connecting the swing arm is articulated with the telescopic link drive end, and the other end of connecting the swing arm links to each other with the cam subassembly through the pivot, and the middle part of connecting the swing arm forms the pin joint with high-order mounting platform.
Further, the instrument fixing device includes: the base is arranged in the equipment shell, and a linear guide rail is arranged on the base along the horizontal direction; the bottom surface of the bottom plate is provided with a sliding block which is in sliding connection with the linear guide rail, so that the bottom plate is arranged on the base in a sliding mode along the horizontal direction; and the plurality of clamping parts are fixed on the bottom plate and used for clamping and fixing the instrument to be tested.
Further, the horizontal adjusting device is arranged below the high-position mounting platform, and a driving end of the horizontal adjusting device is connected with the bottom plate to adjust the position of the bottom plate in the horizontal direction.
Further, the transverse adjusting device comprises a second telescopic mechanism, and a telescopic rod of the second telescopic mechanism is connected with the bottom plate along the horizontal direction.
Further, the device housing includes: a frame configured as a rectangular frame; and the wall surface is attached and fixed on the side surface formed by the rectangular frame to form the complete shell. Wherein at least one wall surface is provided with a door structure which can be opened and closed.
Further, the wall and/or door structure is constructed as a net structure.
Further, still include control system, control system includes: the electric control system is electrically connected with the cam driving device, the first telescopic mechanism and the second telescopic mechanism so as to supply power and control the cam driving device, the first telescopic mechanism and the second telescopic mechanism; the emergency stop module is arranged on the door structure and is electrically connected with the electric control system, and the emergency stop module is arranged into: in the running process of the fatigue testing equipment for the eccentric devices and the centering devices, when the door structure is opened, the fatigue testing equipment for the eccentric devices and the centering devices can be stopped through the electric control system.
The invention relates to a fatigue test device for an eccentric device and a centralizer instrument, which comprises the following components:
1) fatigue tests of the centralizer and the eccentric instrument under different well conditions can be simulated only by the cam assembly, so that the fatigue test equipment of the centralizer and the eccentric instrument is simple to operate, the simulated well wall characteristics can be customized according to different requirements, and the applicability is wider;
2) the combination of the well wall simulation device, the longitudinal adjusting device and the transverse adjusting device can also realize the simulation control of adjusting the well diameter size, simulating the lifting and lowering of the well, the actual contact position of the well wall and an instrument and the logging speed.
Drawings
FIG. 1 is a schematic structural diagram of a fatigue testing apparatus for an eccentric and centralizer type instrument according to an embodiment of the present invention;
FIG. 2 is a schematic side view of the eccentric and centralizer type fatigue testing apparatus of FIG. 1;
FIG. 3 is a schematic top view of the configuration of the eccentric and centralizer-like instrument fatigue testing apparatus shown in FIG. 1;
fig. 4 is a schematic view of the cam assembly shown in fig. 1.
Detailed Description
For better understanding of the objects, structure and function of the present invention, a fatigue testing apparatus for an eccentric and centralizer type instrument according to the present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 to 3 show the structure of an eccentric and centralizer-like instrument fatigue test apparatus according to an embodiment of the present invention. Referring to fig. 1 to 3, the fatigue testing apparatus 100 for an eccentric and centralizer-type apparatus includes: the well wall simulation device 1 comprises a cam assembly 11 and a cam driving device 12, wherein the driving end of the cam driving device 12 is connected with the cam assembly 11 and is used for driving the cam assembly 11 to rotate; a longitudinal adjusting device 2, the driving end of which is detachably connected with the cam assembly 11, for adjusting the height of the cam assembly 11 in the vertical direction; and an instrument fixing device 3 disposed below the cam member 11 for placing and fixing the instrument 200 to be tested. The profile surface S of the cam component 11 at least comprises a plurality of first curved surfaces S1, second curved surfaces S2 and third curved surfaces S3, wherein the first curved surfaces S1 are used for simulating a cavity surface of a well wall, the second curved surfaces S2 are used for simulating a convex surface of the well wall, and the third curved surfaces S3 are used for simulating a smooth surface of the well wall.
The eccentric and centralizer type instruments referred to in this application are understood to be centralizer type instruments. In particular, a centralizer is commonly referred to as a rigid and resilient centralizing frame installed on the outer surface of a casing string to ensure that the casing string is run in the center of the wellbore in oil and gas drilling. Most of the centralizers used on site are spring type lantern-shaped frameworks. The bow 201 referred to in this application can be understood as a centering frame that is rich in elasticity. In the present application, at least, it can be understood that, in addition to the first curved surface S1, the second curved surface S2 and the third curved surface S3 with different curvatures, a fourth curved surface, a fifth curved surface, etc. are added in the subsequent testing process, that is, in addition to the first curved surface S1 for simulating a borehole wall cavity surface, the second curved surface S2 for simulating a borehole wall convex surface, and the third curved surface S3 for simulating a borehole wall smooth surface, according to the specific testing requirements, a fourth curved surface, a fifth curved surface, etc. with different curvatures can be added for simulating other borehole wall surface 43 features. The composition mentioned in the present application should be understood that the first curved surface S1, the second curved surface S2 and the third curved surface S3 may be connected in sequence, or a plurality of first curved surfaces S1, second curved surfaces S2 and third curved surfaces S3 are connected irregularly, and the specific connection manner may be defined by specific test conditions, that is, the position, range and number of each curved surface on the profile surface S may be finally defined by combining with the actual borehole wall characteristics, so as to be finally used for simulating complex borehole wall characteristics.
When the fatigue testing device 100 for the eccentric and centralizer instruments according to the embodiment of the invention is used, the instrument 200 to be tested (such as a centralizer) is fixed on the instrument fixing device 3, and meanwhile, the position of the cam component 11 is adjusted through the longitudinal adjusting device 2. Since the third curved surface S3 is used to simulate a smooth surface of a borehole wall, the third curved surface S3 is used as a reference position for contacting the bow 201 of an eccentric or centralizer instrument. The cam assembly 11 is adjusted by the longitudinal adjustment device 2 such that the bow 201 comes into abutment with the third curved surface S3. During testing, the apparatus is started and the cam assembly 11 can be rotated at high speed by the cam drive 12. In the process of high-speed rotation of the cam assembly 11, the second curved surface S2 simulates a shaft wall convex surface, and the second curved surface S2 can extrude the bow piece 201, so as to simulate the working conditions of an eccentric device and a centralizer device in practical application. The first curved surface S1 simulates a cavity surface of the well wall, and the bow piece 201 is rebounded and reset through the difference value of the high and low positions of the first curved surface S1 and the second curved surface S2, so that the fatigue test of the eccentric device and the centralizer instrument under the actual working condition is completed.
Through the arrangement, the fatigue test equipment 100 for the eccentric device and the centralizer instruments can simulate the fatigue test of the centralizer and the centralizer instruments under different well conditions (well wall characteristics such as a convex well wall, a hollow well wall and a smooth section) only through the cam component 11, and can simulate and control the actual contact position of the well wall and the instruments through the longitudinal adjusting device 2, so that the fatigue test equipment 100 for the eccentric device and the centralizer instruments is simple to operate, the simulated well wall characteristics can be customized according to different requirements, and the adaptability is wider.
Preferably, as shown in fig. 4, the cam assembly 11 may include a hub portion 111 and a rim portion 112, the hub portion 111 being detachably connected with the driving end of the longitudinal adjuster 2, the rim portion 112 being detachably sleeved on the hub portion 111, the contour surface S being configured as an outer contour surface S of the hub portion 111. In this embodiment, the hub portion 111 and the rim portion 112 are detachably and fixedly connected in a split manner. Through this setting, can design the rim portion 112 of multiple different outer profile surface S respectively according to the difference of test requirement, when different test demands, only need to change rim portion 112 can, change in tester' S operation more easily. Fig. 4 shows a profile S of the rim portion 112 as required by the test. It should be noted that the test requirements refer to the different test requirements that the different borehole wall characteristics will impose on the tool. And correspondingly designing the shapes of different outer contour surfaces S according to different well wall characteristics.
In a preferred embodiment, the material of the hub portion 111 may be metal to improve the structural strength of the hub portion 111. With this arrangement, since the hub portion 111 is required to be connected to the driving end of the cam driving device 12 and also arranged at the driving end of the longitudinal adjusting device 2, the stability of the cam assembly 11 during rotation and installation can be improved by improving the structural strength of the hub portion 111, and the cam assembly 11 is used as a key component for testing, so that the service life of the fatigue testing equipment 100 for the eccentric and centralizer instruments of the embodiment of the present invention can be effectively prolonged.
Returning to fig. 1 to 3, the fatigue testing device 100 for an eccentric and centralizer type instrument may further include a device housing 4, in which an elevated mounting platform 41 is disposed, and the well wall simulation apparatus 1 is disposed on the elevated mounting platform 41. The longitudinal adjustment device 2 may comprise: the first telescopic mechanism 21 is arranged below the high-position mounting platform 41, and a telescopic rod of the first telescopic mechanism 21 penetrates through the high-position mounting platform 41 along the vertical direction to form a telescopic rod driving end; the connecting swing arm 22, and the cam driving device 12 is arranged on the connecting swing arm 22. Wherein, the one end of connecting swing arm 22 is articulated with the telescopic link drive end, and the other end of connecting swing arm 22 links to each other with cam module 11 through the pivot, and the middle part of connecting swing arm 22 forms the pin joint with high-order mounting platform 41. In particular use, the connecting swing arm 22 is formed for a lever structure. When the telescopic rod moves downward when the height position of the cam module 11 needs to be adjusted, the end of the connecting swing arm 22 connected to the cam module 11 moves upward, thereby increasing the height of the cam module 11. Conversely, the height of the cam member 11 is lowered. Preferably, the first telescopic mechanism 21 may be a vertical servo electric cylinder. Through the arrangement, on one hand, the connecting swing arm 22 is simple in structure and better in stability in the adjusting process; on the other hand, the longitudinal adjusting device 2 can be controlled by an electric control system (known from the following description), so that the automation of the whole testing process is realized, the testing difficulty is reduced, and the testing safety is improved.
In a preferred embodiment, the cam drive 12 may be composed of a variable frequency motor and a reducer, the variable frequency motor being connected to the cam assembly 11 via the reducer and then via a chain transmission system to rotate the cam assembly 11. Preferably, a safety shield may be disposed outside the chain drive system.
Returning to fig. 1 to 3, preferably, the instrument fixing device 3 may include: a base 31 arranged in the equipment housing 4, the base 31 being provided with a linear guide rail 32 along a horizontal direction; a bottom plate 33, the bottom surface of which is provided with a slide block 34 slidably connected with the linear guide rail 32, so that the bottom plate 33 is slidably arranged on the base 31 along the horizontal direction; and a plurality of clamping parts 35 fixed on the bottom plate 33 for clamping and fixing the instrument 200 to be tested. In specific use, after the eccentric and centralizer instruments are fixed on the instrument fixing device 3, the position of the instrument 200 to be tested can be adjusted and fixed through the cooperation of the linear guide rail 32 and the slide block 34, so that the instrument 200 to be tested is adapted to the position of the cam assembly 11.
In a preferred embodiment, several clamping portions 35 may be provided as flat-nose pliers capable of fixing the instrument 200 to be tested.
Returning to fig. 1 to 3, preferably, the fatigue testing apparatus 100 for an eccentric and centralizer-like instruments may further include a lateral adjustment device 5 disposed below the high mount platform 41, and a driving end of the lateral adjustment device 5 is connected to the base plate 33 for adjusting a position of the base plate 33 in a horizontal direction. Preferably, the lateral adjusting device 5 may include a second telescoping mechanism 51, and the telescoping rod of the second telescoping mechanism 51 is connected to the bottom plate 33 in the horizontal direction. Preferably, the second telescopic mechanism 51 may be a horizontal servo electric cylinder. Through the arrangement, the transverse adjusting device 5 can be controlled by an electric control system (known by combining the following description) so as to realize automation of the whole testing process, reduce the testing difficulty and improve the testing safety.
In addition, the combination of the well wall simulation device 1, the longitudinal adjusting device 2 and the transverse adjusting device 5 can also realize that: adjusting the borehole diameter, for example by adjusting the smooth section of the cam assembly 11 of the borehole wall simulation apparatus 1; simulating the lifting and lowering, for example, by adjusting the position of the bottom plate 33 in the horizontal direction by the lateral adjustment device 5; the actual contact position of the well wall and the instrument is adjusted, for example, by the longitudinal adjusting device 2, the cam assembly 11 is adjusted, so that the bow piece 201 is abutted with the third curved surface S3; and analog control of logging speed, such as by control of the cam drive 12.
Returning to fig. 1 to 3, preferably, the apparatus housing 4 may include: a frame 42, the frame 42 being configured as a rectangular frame 42; and a wall surface 43 attached and fixed to a side surface formed by the rectangular frame 42 to constitute a complete case. Wherein at least one wall 43 has an openable and closable door structure 44. Through the arrangement, on one hand, the installation and the taking out of the instrument 200 to be tested can be facilitated; on the other hand, the arrangement of the wall surface 43 and the closable door structure 44 can also ensure the safety of the whole testing process and ensure the personal safety of testing personnel.
Preferably, as shown in connection with fig. 1 and 2, the wall 43 and/or the door structure 44 may be constructed as a net structure. The net structure in this application is understood to be a wall 43 and a door formed of a wire mesh, or a frame 42 of the wall 43 and a frame 42 of the door wound with a wire. Through the setting, the perspective of the wall surface 43 and the door structure 44 of the net-shaped structure is better, and a tester can better observe the test state of the eccentric device and the centralizer type instrument in the fatigue test process through the net-shaped structure.
Preferably, as shown in connection with FIG. 1, the eccentric and centralizer type instrument fatigue testing apparatus 100 may further include a control system 6, and the control system 6 may include: the electric control system is electrically connected with the cam driving device 12, the first telescopic mechanism 21 and the second telescopic mechanism 51 so as to supply power and control the cam driving device, the first telescopic mechanism and the second telescopic mechanism; an emergency stop module (not shown in the figures) arranged on the door structure 44 and electrically connected to the electronic control system, the emergency stop module being arranged to: during the operation of the eccentric and centralizer type instrument fatigue testing device 100, when the door structure 44 is opened, the eccentric and centralizer type instrument fatigue testing device 100 can be shut down through the electronic control system. In particular, when in use, after the eccentric and centralizer instruments are fixed on the instrument fixing device 3, the relevant control buttons are operated on the electronic control system to control the first telescoping mechanism 21 and the second telescoping mechanism 51 so as to adjust the relative position of the cam assembly 11 and the instrument to be tested, so that the cam assembly 11 reaches the height to be tested, and the height reference and the third curved surface S3 are used as the height reference. The required rotation speed and rotation direction are input into the electric control system, and the cam driving device 12 (variable frequency motor) is started to start testing when the relevant control button is operated. In the testing process, if the relative position of the cam component 11 and the instrument to be tested has adjustment deviation, or in the equipment testing operation process, the door structure 44 is opened, or other fault problems occur to the equipment, the emergency stop module can stop the fatigue testing equipment 100 for the eccentric device and the centralizer instrument through the electric control system, and the personal safety of testing personnel is further protected. Preferably, the control system 6 can be powered by an external power distribution cabinet.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
In the description of the present application, it is to be understood that the terms "longitudinal," "lateral," "upper," "lower," "vertical," "horizontal," "top," "bottom," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. An eccentric and centralizer type instrument fatigue test apparatus, comprising:
the well wall simulation device comprises a cam assembly and a cam driving device, wherein the driving end of the cam driving device is connected with the cam assembly and is used for driving the cam assembly to rotate;
the driving end of the longitudinal adjusting device is detachably connected with the cam assembly and used for adjusting the height of the cam assembly in the vertical direction; and
the instrument fixing device is arranged below the cam component and used for placing and fixing an instrument to be tested;
the profile surface of the cam component is at least composed of a first curved surface, a second curved surface and a third curved surface, wherein the curvatures of the first curved surface, the second curved surface and the third curved surface are different, the first curved surface is used for simulating a borehole wall cavity surface, the second curved surface is used for simulating a borehole wall convex surface, and the third curved surface is used for simulating a borehole wall smooth surface.
2. The eccentric and centralizer-like instrument fatigue testing apparatus of claim 1, wherein the cam assembly includes a hub portion removably coupled to the drive end of the longitudinal adjustment device and a rim portion removably sleeved over the hub portion, the contoured surface configured as an outer contoured surface of the hub portion.
3. The eccentric and centralizer-like instrument fatigue testing apparatus of claim 2, wherein the hub portion is metal.
4. The fatigue testing equipment for the eccentric and centralizer instruments according to any one of claims 1-3, further comprising an equipment housing, wherein an elevated mounting platform is arranged in the equipment housing, and the well wall simulation device is arranged on the elevated mounting platform; the longitudinal adjustment device includes:
the first telescopic mechanism is arranged below the high-position mounting platform, and a telescopic rod of the first telescopic mechanism penetrates through the high-position mounting platform along the vertical direction to form a telescopic rod driving end;
the cam driving device is arranged on the connecting swing arm;
one end of the connecting swing arm is hinged to the driving end of the telescopic rod, the other end of the connecting swing arm is connected with the cam assembly through a rotating shaft, and the middle of the connecting swing arm is pivoted with the high-level mounting platform.
5. The eccentric and centralizer-like instrument fatigue testing apparatus of claim 4, wherein the instrument fixture includes:
the base is arranged in the equipment shell, and a linear guide rail is arranged on the base along the horizontal direction;
the bottom surface of the bottom plate is provided with a sliding block which is in sliding connection with the linear guide rail, so that the bottom plate is arranged on the base in a sliding mode along the horizontal direction; and
and the plurality of clamping parts are fixed on the bottom plate and used for clamping and fixing the instrument to be tested.
6. The eccentric and centralizer-like instrument fatigue testing apparatus of claim 5, further comprising a lateral adjustment device disposed below the elevated mounting platform, the drive end of the lateral adjustment device being coupled to the base plate for adjusting the position of the base plate in a horizontal direction.
7. The eccentric and centralizer type instrument fatigue testing apparatus of claim 6, wherein the lateral adjustment device comprises a second telescoping mechanism, a telescoping rod of the second telescoping mechanism being connected to the base plate in a horizontal direction.
8. The eccentric and centralizer-like instrument fatigue testing device of claim 7, wherein the device housing comprises:
a frame configured as a rectangular frame; and
the wall surface is attached and fixed on the side surface formed by the rectangular frame to form a complete shell;
wherein at least one wall surface is provided with a door structure which can be opened and closed.
9. The eccentric and centralizer-like instrument fatigue testing apparatus of claim 8, wherein the wall and/or door structure is configured as a mesh structure.
10. The eccentric and centralizer-like instrument fatigue testing apparatus of claim 8, further comprising a control system comprising:
the electric control system is electrically connected with the cam driving device, the first telescopic mechanism and the second telescopic mechanism so as to supply power and control the cam driving device, the first telescopic mechanism and the second telescopic mechanism;
an emergency stop module disposed on the door structure and electrically connected to the electronic control system, the emergency stop module configured to: in the running process of the fatigue testing equipment for the eccentric devices and the centering devices, when the door structure is opened, the fatigue testing equipment for the eccentric devices and the centering devices can be stopped through the electric control system.
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| CN202111026892.9A CN113588249B (en) | 2021-09-02 | 2021-09-02 | Fatigue test equipment for eccentric and centralizer instruments |
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| CN202111026892.9A CN113588249B (en) | 2021-09-02 | 2021-09-02 | Fatigue test equipment for eccentric and centralizer instruments |
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