Protective device for a logging tool probe

Abstract

The application belongs to the field of oil exploration, and discloses a protection device for a logging instrument probe. The protection device comprises a protection mechanism and a fixing mechanism. The protection mechanism comprises a first support table, a second support table and a cavity for mounting the logging instrument probe. The fixing mechanism comprises a first clamping seat assembly for fixing the logging instrument probe on the first support table and a second clamping seat assembly for fixing the logging instrument probe on the second support table. The protection device can effectively offset the axial impact on the logging instrument probe, and further meet the requirements of fixing and protecting the logging instrument probe.

Description

Technical Field

[0001] This invention relates to the field of petroleum exploration, and more specifically to a protective device for a logging tool probe. Background Technology

[0002] Among the logging instruments used in oil exploration, the inclination logging tool probe is a relatively common instrument. The inclination logging tool probe is mainly used to detect the well's inclination angle, azimuth angle, first electrode azimuth angle, and relative azimuth angle.

[0003] Currently, the probes of inclined logging tools are highly susceptible to impacts during loading, unloading, transportation, and logging, which can damage the instrument itself and further increase costs. Furthermore, the probes of inclined logging tools must undergo rigorous testing before being deployed into the well. Improper fixation or inadequate protection of the probes will severely affect the final exploration results.

[0004] Therefore, it is desirable to propose a protective device that can protect the probe of a continuous inclination logging tool. Summary of the Invention

[0005] The purpose of this invention is to provide a protective device for a logging tool probe, which solves the problem of probe fixation and protection. On one hand, a through hole provided in the second fixing member buffers the axial impact on the logging tool probe. On the other hand, a through groove provided on the outer periphery of the first body increases the friction between the first body and the inner wall of the protective mechanism, further buffering the axial impact on the logging tool probe. Furthermore, both the first and second sealing rings of this invention also buffer the axial impact on the logging tool probe.

[0006] According to the present invention, a protective device for a logging tool probe is provided, comprising a protective mechanism including a first support platform and a second support platform disposed at both ends, and a chamber formed in the middle for mounting the logging tool probe; and a fixing mechanism including a first mounting bracket assembly for fixing a first end of the logging tool probe to the first support platform, and a second mounting bracket assembly for fixing a second end of the logging tool probe to the second support platform.

[0007] In one embodiment, the first mounting assembly includes a first body configured in a cylindrical shape and a first column extending from the first body in a first direction, the first column being configured to be inserted into the logging tool probe.

[0008] In one embodiment, the first column is provided with a groove that matches the protrusion at the first end of the logging tool probe and is used to restrict the rotation of the logging tool probe.

[0009] In one embodiment, a spiral groove is provided on the outer periphery of the first body.

[0010] In one embodiment, the first card holder assembly further includes a first fastener extending from the first body in a second direction opposite to the first direction, the first fastener being connected to the first support platform by a first screw.

[0011] In one embodiment, the second card holder assembly includes a second body configured as a cylinder and a second fastener extending from the second body along a first direction, the second fastener being connected to the second support platform by a second screw.

[0012] In one embodiment, the second fastener has an elliptical through hole extending axially for mounting the second screw.

[0013] In one embodiment, the second card holder assembly further includes a first card and a second card extending from the second body along a second direction, both the first card and the second card being formed as partial cylinders, radially spaced apart from each other, and both configured to be inserted into the logging tool probe.

[0014] In one embodiment, both the free ends of the first and second locking components are fitted with cushioning material for contact with the logging tool probe.

[0015] In one embodiment, the inner wall of the protective mechanism is fitted with a plurality of first sealing rings disposed on the outer periphery of the logging tool probe; a second sealing ring is disposed between the second fixing member and the second support platform.

[0016] Compared with existing technologies, the advantages of this invention are as follows: This invention can solve the problem of fixing and protecting the logging tool probe. On the one hand, by setting an elliptical through hole on the second fixing member, it buffers the axial impact received by the logging tool probe. On the other hand, by setting a through groove on the outer periphery of the first body, it increases the friction between the first body and the inner wall of the protection mechanism, thereby buffering the axial impact received by the logging tool probe. In addition, both the first sealing ring and the second sealing ring of this invention can also buffer the axial impact received by the logging tool probe. Attached Figure Description

[0017] The invention will now be described in detail with reference to the accompanying drawings, in which:

[0018] Figure 1 The schematic diagram illustrates the structure of a protective device for a logging tool probe according to the present invention;

[0019] Figure 2 for Figure 1 Cross-sectional view at point AA;

[0020] Figure 3 for Figure 1 Cross-sectional view at point BB;

[0021] Figure 4 for Figure 1 Cross-sectional view at point C;

[0022] Figure 5 This is a schematic diagram of the structure of the first retainer assembly in the protective device for a logging tool probe according to the present invention;

[0023] Figure 6 This is a schematic diagram of the structure of the second locator assembly in the protective device for a logging tool probe according to the present invention;

[0024] Figure 7 This is a schematic diagram of the protective mechanism in the protective device for the logging tool probe according to the present invention;

[0025] Figure 8 This is a top view of a protective device for a logging tool probe according to the present invention.

[0026] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not drawn to scale. Detailed Implementation

[0027] The invention will now be further described with reference to the accompanying drawings. For ease of explanation, the directional term "first direction" or similar term used in this specification refers to the direction from the first card holder assembly to the second card holder assembly, i.e. Figure 1 The direction to the right from the center level. The directional term "second direction" or similar terms refers to the direction opposite to the directional term "first direction," that is... Figure 1 The direction to the left from the middle level.

[0028] Figure 1 The schematic diagram illustrates the structure of a protective device 100 for a logging tool probe according to the present invention. For example... Figure 1As shown, the protective device 100 for a logging tool probe according to the present invention mainly includes a protective structure 10 and a fixing mechanism 40. The protective structure 10 includes a first support platform 11, a second support platform 12, and a chamber 20. The first support platform 11 and the second support platform 12 are respectively disposed at both ends of the protective structure 10. The chamber 20 is formed in the middle of the protective structure 10 and is used to house the logging tool probe 30. The fixing mechanism 40 is connected to the logging tool probe 30. By engaging with the first support platform 11 and the second support platform 12 respectively, the fixing mechanism 40 effectively mounts the logging tool probe 30 on the protective structure 10, further meeting the requirements for fixing and protecting the logging tool probe 30 during exploration.

[0029] According to the present invention, such as Figure 1 As shown, the fixing mechanism 40 includes a first retainer assembly 50 and a second retainer assembly 60. The second end of the first retainer assembly 50 is connected to the first end of the logging tool probe 30; the first end of the second retainer assembly 60 is connected to the second end of the logging tool probe 30. Furthermore, the first end of the first retainer assembly 50 is connected to the first support platform 11; the second end of the second retainer assembly 60 is connected to the second support platform 12, thereby reasonably installing the logging tool probe 30 within the chamber 20 of the protection mechanism 10. This effectively reduces the impact of external environmental changes on the logging tool probe 30 during exploration, further meeting the requirements for fixing and protecting the logging tool probe 30 during the exploration process.

[0030] Figure 5 This is a schematic diagram of the structure of the first retainer assembly 50 in the protective device 100 for a logging tool probe according to the present invention. According to the present invention, as... Figure 5 As shown, the first mounting bracket assembly 50 includes a first body 51. The first body 51 is constructed as a hollow cylindrical structure. This reduces the overall weight of the protection device 100 for the logging tool probe to a certain extent, thereby making it easier to control the speed at which the protection device 100 for the logging tool probe moves downhole.

[0031] According to one embodiment of the present invention, a threaded through groove 511 is provided on the outer periphery of the first body 51, thereby increasing the friction between the first body 51 and the inner wall of the protection mechanism 10, further buffering the axial impact force of the protection device 100 for the logging tool probe, thereby meeting the requirements for protection of the logging tool probe 30 during the exploration process. The details are described below.

[0032] According to the present invention, such as Figure 5As shown, the first mounting bracket 50 also includes a first column 53 extending from the first body 51 along a first direction. The first column 53 is constructed as a hollow cylindrical structure, and the diameter of the first column 53 is smaller than the diameter of the first body 51. This allows the first column 53 to be more easily inserted into the logging tool probe 30. According to one embodiment of the invention, the first column 53 is provided with a plurality of screw holes radially, thereby effectively engaging with the first end of the logging tool probe 30 via screws, further satisfying the requirements for fixing the logging tool probe 30 during exploration.

[0033] According to one embodiment of the present invention, the first column 53 includes a groove 531 disposed inside. The logging tool probe 30 includes a protrusion 31 disposed on a first end. The groove 531 in the first column 53 engages with the protrusion 31 on the logging tool probe 30, thereby effectively preventing the logging tool probe 30 from rotating during the detection process.

[0034] According to the present invention, such as Figure 5 As shown, the first card holder assembly 50 also includes a first fastener 52 extending from the first body 51 along a second direction opposite to the first direction. The first fastener 52 is configured as a partially cylindrical structure. The first fastener 52 has a plurality of screw holes arranged radially. Figure 2 for Figure 1 Cross-sectional view at point AA. (See diagram below.) Figure 2 As shown, the first fixing member 52 is fixedly connected to the first support platform 11 by the first screw, which further meets the requirements for fixing the logging instrument probe 30 during the exploration process.

[0035] Figure 6 This is a schematic diagram of the structure of the second retainer assembly 60 in the protective device 100 for a logging tool probe according to the present invention. According to the present invention, as... Figure 6 As shown, the second card holder assembly 60 includes a second body 61 configured as a cylinder and a second fastener 62 extending from the second body 61 along a first direction. The second fastener 62 is configured as a partially cylindrical structure and is used for connection to the second support platform 12. Figure 3 for Figure 1 Cross-sectional view at point BB. (See diagram below.) Figure 3 As shown, the second fixing member 62 is fixedly connected to the second support platform 12 by the second screw, further meeting the requirements for fixing the logging tool probe 30 during the exploration process. Its details are described below.

[0036] Figure 8 This is a top view of a protective device 100 for a logging tool probe according to the present invention. According to one embodiment of the present invention, such as... Figure 6 and 8As shown, the second fixing member 62 includes a plurality of through holes 621 extending axially. Preferably, the through holes 621 are elliptical through holes for mounting the second screw. In this way, the through holes 621 can provide a certain buffer space for the second fixing member 62. Thus, when the protection device 100 for the logging tool probe is accidentally subjected to axial impact downhole, the second mounting bracket assembly 60 can move appropriately in the buffer space of the through holes 621 in a first direction or a second direction according to the direction of the impact force, thereby reducing the axial impact force on the logging tool probe 30 and further protecting the logging tool probe 30.

[0037] According to the present invention, the second retainer assembly 60 further includes a first retainer 63 and a second retainer 64 extending from the second body 61 along a second direction. Both the first retainer 63 and the second retainer 64 are partially cylindrical and radially spaced apart from each other. According to one embodiment of the present invention, the second end of the logging tool probe 30 is provided with grooves respectively adapted to the first retainer 63 and the second retainer 64, allowing the first retainer 63 and the second retainer 64 to be more easily inserted into the logging tool probe 30 to form an effective engagement, further enhancing the fixing effect on the logging tool probe 30.

[0038] In one embodiment of the present invention, both the first locking member 63 and the second locking member 64 are provided with a plurality of screw holes in the radial direction. The screw holes on the first locking member 63 and the screw holes on the second locking member 64 are symmetrically distributed in the radial direction. This allows the first locking member 63 and the second locking member 64 to have a more stable connection with the logging tool probe 30, further improving the fixation of the logging tool probe 30.

[0039] In one embodiment of the present invention, a U-shaped shock-absorbing pad is provided between the logging tool probe 30 and the first clamping member 63 and the second clamping member 64. Preferably, the shock-absorbing pad is made of an acrylic / silicone blend material. Specifically, the free ends of the first clamping member 63 and the second clamping member 64 are fixedly connected to the shock-absorbing pad. The second end of the logging tool probe 30 is in contact with the shock-absorbing pad. Thus, when the protection device 100 for the logging tool probe is accidentally subjected to axial impact downhole and the second clamping member 60 moves in the second direction, the second clamping member 60 will first impact the shock-absorbing pad, thereby effectively attenuating the axial impact of the second clamping member 60, further achieving the fixation and protection of the logging tool probe 30. In addition, the shock-absorbing pad also has a straightening effect on the probe extending from the second end of the logging tool probe 30, further preventing the probe from deforming due to axial impact force.

[0040] In one embodiment of the present invention, such as Figure 1As shown, several first sealing rings 1 are provided on the outer periphery of the logging tool probe 30. The inner wall of the protection mechanism 10 is tightly fitted with the first sealing rings 1 in the axial direction. This allows the logging tool probe 30 to maintain a stable position within the chamber 20, thereby reducing the impact of the external environment on the exploration results. Furthermore, due to the presence of these sealing rings, the logging tool probe 30 can also avoid direct contact with the well wall, further protecting the logging tool probe 30.

[0041] Figure 4 for Figure 1 A cross-sectional view at point C. In one embodiment of the invention, as shown... Figure 1 and 4 As shown, a second sealing ring 2 is provided between the second fixing member 62 and the second support platform 12. In this way, the second sealing ring 2 can provide a certain degree of flexible support for the second fixing member 62, thereby extending the service life of the protection device 100 for the logging tool probe. Furthermore, when the protection device 100 for the logging tool probe is accidentally subjected to axial impact downhole, and the second mounting bracket 60 moves in the first or second direction for adjustment, the sealing ring can increase the friction between the second fixing member 62 and the second support platform 12, thereby effectively buffering the axial impact force and further achieving the function of fixing and protecting the logging tool probe 30.

[0042] This invention solves the problem of fixing and protecting the logging tool probe 30. On one hand, by providing an elliptical through hole 621 on the second fixing member 62, the axial impact on the logging tool probe 30 is buffered. On the other hand, a through groove 511 is provided on the outer periphery of the first body 51, thereby increasing the friction between the first body 51 and the inner wall of the protection mechanism 10 to buffer the axial impact on the logging tool probe 30. Furthermore, both the first sealing ring 1 and the second sealing ring 2 of this invention can also buffer the axial impact on the logging tool probe 30.

[0043] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art can easily make changes or modifications within the scope of the present invention, and such changes or modifications should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A protective device (100) for a logging tool probe, comprising: The protection mechanism (10) includes a first support platform (11) and a second support platform (12) located at both ends, and a chamber (20) formed in the middle for installing a logging instrument probe (30); and The fixing mechanism (40) includes a first mounting bracket (50) for fixing the first end of the logging tool probe (30) to the first support platform (11), and a second mounting bracket (60) for fixing the second end of the logging tool probe (30) to the second support platform (12). The first mounting bracket (50) includes a first body (51) configured as a cylinder, and a first column (53) extending from the first body (51) in a first direction. The first column (53) is configured to be inserted into the logging tool probe (30). The first column (53) is provided with a groove (531) that is adapted to the protrusion (31) of the first end of the logging tool probe (30) and is used to limit the rotation of the logging tool probe (30). A spiral through groove (511) is provided on the outer periphery of the first body (51) to increase the inner wall of the first body (51) and the protection mechanism (10). The friction between them, the second card holder assembly (60) includes a second body (61) configured as a cylinder, and a second fixing member (62) extending from the second body (61) along a first direction. The second fixing member (62) is connected to the second support platform (12) by a second screw. The second fixing member (62) is provided with an axially extending elliptical through hole (621) for installing the second screw. The second card holder assembly (60) also includes a first card (63) and a second card (64) extending from the second body (61) along a second direction. The first card (63) and the second card (64) are both formed as partial cylinders, radially spaced from each other, and both are configured to be inserted into the logging tool probe (30). The free ends of the first card (63) and the second card (64) are both fitted with a buffer material, which is in contact with the logging tool probe (30).

2. The protection device for a logging tool probe of claim 1, wherein, The first card holder assembly (50) further includes a first fastener (52) extending from the first body (51) in a second direction opposite to the first direction, the first fastener (52) being connected to the first support platform (11) by a first screw.

3. The protection device for a logging tool probe of claim 2, wherein, The inner wall of the protection mechanism (10) is fitted with a plurality of first sealing rings (1) on the outer periphery of the logging instrument probe (30); a second sealing ring (2) is provided between the second fixing member (62) and the second support platform (12).

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