Logging instrument for petroleum geological exploration

Abstract

The utility model discloses a logging instrument for petroleum geological exploration, which relates to the technical field of logging instruments, and comprises a logging instrument main body used for geological exploration of the inside of an oil well; the outer sleeving mechanism is used for mounting the plurality of calibration mechanisms; the calibration mechanism is used for calibrating the position of the logging instrument main body; the driving mechanism comprises a two-way screw rod, a driving motor and a pushing ring; the two-way screw rod penetrates through the upper outer sleeve ring in the vertical direction and is rotationally connected with the two-way screw rod through a bearing, the driving motor is fixedly arranged at the top of the upper outer sleeve ring and is in transmission connection with the two-way screw rod, and the two pushing rings are arranged on the outer side of the two-way screw rod in a sleeving mode and are in transmission connection with the two-way screw rod. According to the utility model, the structure is simpler, the driving motor can be more conveniently overhauled, and the practical use is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of well logging instruments, in particular to a well logging instrument for petroleum geological exploration. Background Art

[0002] The logging instrument consists of surface instruments and downhole instruments. During actual logging operations, manual operation or computer software controls the operation of the downhole instruments, and the collected electrical signals are transmitted to the main unit of the surface instruments through cables. During the logging process, the instruments must remain in the middle position in the well.

[0003] After searching, the utility model patent with patent authorization announcement number CN218454735U discloses a logging instrument for petroleum geological exploration, including a logging instrument body, an outer fixed sleeve of the logging instrument body is provided with a round box with an opening at the top and an outer tube with a sealing structure at the top, and the bottom end of the outer tube is fixedly connected to the top of the round box.

[0004] However, the above-mentioned logging instrument still has some shortcomings in actual use. The most obvious one is that its structure is relatively complex and the drive motor that requires regular maintenance is located inside the round box. Therefore, when repairing the drive motor, the round box needs to be removed from the bottom of the outer tube, which is too inconvenient in actual use.

[0005] Therefore, it is necessary to invent a petroleum geological exploration logging instrument to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a logging instrument for petroleum geological exploration, which has a simpler structure and can more conveniently perform maintenance operations on the drive motor, making it more convenient in actual use, so as to solve the problem proposed in the above background technology that the drive motor has a relatively complex structure and requires regular maintenance and is located inside the round box. Therefore, when the drive motor is repaired, it is necessary to remove the round box from the bottom of the outer tube, which is too inconvenient in actual use.

[0007] According to one aspect of the present disclosure, the following technical solution is provided: a logging instrument for petroleum geological exploration, comprising:

[0008] A well logging instrument body, the well logging instrument body being used for geological exploration inside an oil well;

[0009] A jacket mechanism, the jacket mechanism being used to mount a plurality of calibration mechanisms;

[0010] a calibration mechanism, the calibration mechanism being used to calibrate the position of the logging tool body;

[0011] A driving mechanism, comprising a bidirectional screw, a driving motor and a pushing ring;

[0012] The bidirectional screw passes through the upper outer ring in the vertical direction and is rotatably connected to the bidirectional screw through a bearing. The drive motor is fixedly arranged on the top of the upper outer ring and is transmission-connected to the bidirectional screw. Two push rings are provided. The two push rings are sleeved on the outside of the bidirectional screw and transmission-connected to the bidirectional screw. Both push rings are slidably sleeved on the outside of the guide rod in the vertical direction; and

[0013] A protective mechanism, comprising a sliding post and an annular protective cover;

[0014] The sliding column slides along the vertical direction and penetrates the upper outer ring and is fixedly arranged between the annular protective cover and the adjacent pushing ring. The annular protective cover is located outside the driving motor and fits on the top of the upper outer ring.

[0015] According to at least one embodiment of the logging instrument for petroleum geological exploration disclosed herein, the outer sleeve mechanism includes an upper outer sleeve ring and a lower outer sleeve ring, which are fixedly sleeved on the outside of the logging instrument body in sequence from top to bottom.

[0016] According to at least one embodiment of the logging instrument for petroleum geological exploration disclosed herein, the outer sleeve mechanism further includes a guide rod fixedly connected between the upper outer sleeve ring and the lower outer sleeve ring.

[0017] According to at least one embodiment of the logging instrument for petroleum geological exploration disclosed herein, the calibration mechanisms are provided in multiple groups, and the multiple groups of calibration mechanisms are evenly arranged at the bottom of the upper outer ring and the top of the lower outer ring.

[0018] According to at least one embodiment of the logging instrument for petroleum geological exploration disclosed herein, the calibration mechanism includes a U-shaped seat and a calibration plate, the upper outer ring and the lower outer ring are fixedly connected to the adjacent U-shaped seat, the calibration plate is rotatably arranged on the inner side of the U-shaped seat through a pin shaft, and a torsion spring is arranged between the inner wall of the U-shaped seat and the calibration plate.

[0019] The technical effects and advantages of this utility model are:

[0020] The utility model is provided with a driving mechanism and a protective mechanism, so that when the driving motor needs to be inspected and repaired, the driving motor drives the bidirectional screw to rotate continuously after starting, and the bidirectional screw drives the two pushing rings guided by the guide rod to move away from each other when rotating. During the upward movement of the upper pushing ring, the annular protective cover is driven to move upward synchronously by the sliding column, thereby releasing the protection of the annular protective cover for the driving motor, so that the driving motor is exposed and convenient for maintenance. Compared with existing similar equipment, the utility model has a simpler structure and can more conveniently perform maintenance operations on the driving motor, which is more convenient in actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings illustrate exemplary embodiments of the present disclosure and together with the description serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0022] Figure 1 It is a schematic diagram of the overall structure of a logging instrument for petroleum geological exploration according to one embodiment of the present disclosure.

[0023] Figure 2 The present invention is a schematic structural diagram of a casing mechanism, a calibration mechanism, and a driving mechanism of a logging instrument for petroleum geological exploration according to an embodiment of the present invention.

[0024] Figure 3 It is a schematic structural diagram of a driving mechanism and a protection mechanism of a logging instrument for petroleum geological exploration according to one embodiment of the present disclosure.

[0025] The specific reference numerals in the figure are:

[0026] 1. Logging tool body;

[0027] 2. Outer sleeve mechanism; 21. Upper outer sleeve ring; 22. Lower outer sleeve ring; 23. Guide rod;

[0028] 3. Calibration mechanism; 31. U-shaped seat; 32. Calibration plate;

[0029] 4. Driving mechanism; 41. Bidirectional screw; 42. Driving motor; 43. Pushing ring;

[0030] 5. Protective mechanism; 51. Sliding column; 52. Annular protective cover. DETAILED DESCRIPTION

[0031] For descriptive purposes, this disclosure may use spatially relative terms such as "below," "beneath," "beneath," "below," "above," "upper," and "side (e.g., as in "sidewall")," to describe the relationship of one component to another (other) component as shown in the accompanying drawings. The spatially relative terms are intended to encompass different orientations of the device in use, operation, and / or manufacture in addition to the orientation depicted in the accompanying drawings. For example, if the device in the drawings is turned over, a component described as "below" or "beneath" another component or feature would then be oriented "above" the other component or feature. Thus, the exemplary term "below" can encompass both "above" and "below" orientations. Furthermore, the device may be otherwise oriented (e.g., rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein interpreted accordingly.

[0032] Figure 1It is a schematic diagram of the overall structure of a logging instrument for petroleum geological exploration according to one embodiment of the present disclosure.

[0033] Figure 2 1 is a schematic structural diagram of an outer sleeve mechanism 2, a calibration mechanism 3 and a driving mechanism 4 of a logging instrument for petroleum geological exploration according to an embodiment of the present disclosure.

[0034] Figure 3 1 is a schematic structural diagram of a driving mechanism 4 and a protection mechanism 5 of a logging instrument for petroleum geological exploration according to an embodiment of the present disclosure.

[0035] like Figure 1-Figure 3 As shown, the logging instrument for petroleum geological exploration disclosed herein may include: a logging instrument body 1, a jacket mechanism 2, a calibration mechanism 3, a driving mechanism 4, a protection mechanism 5 and other components.

[0036] It should also be noted that the logging instrument body 1 is a solution that has been disclosed in the prior art and is not a necessary technical feature for solving the technical problem of this application. Therefore, this application does not elaborate on its specific structure and model.

[0037] like Figure 2 As shown, in the present disclosure, the outer sleeve mechanism 2 includes an upper outer sleeve ring 21, a lower outer sleeve ring 22 and a guide rod 23, wherein the upper outer sleeve ring 21 and the lower outer sleeve ring 22 are fixedly sleeved and arranged on the outside of the logging instrument body 1 in sequence from top to bottom, and the guide rod 23 is fixedly connected between the upper outer sleeve ring 21 and the lower outer sleeve ring 22.

[0038] like Figure 2 As shown, in a preferred embodiment, the calibration mechanism 3 is provided with multiple groups, and the multiple groups of calibration mechanisms 3 are evenly arranged at the bottom of the upper outer ring 21 and the top of the lower outer ring 22. The calibration mechanism 3 includes a U-shaped seat 31 and a calibration plate 32, wherein the upper outer ring 21 and the lower outer ring 22 are fixedly connected to the adjacent U-shaped seats 31, and the calibration plate 32 is rotatably arranged on the inner side of the U-shaped seat 31 through a pin shaft, and a torsion spring is arranged between the inner wall of the U-shaped seat 31 and the calibration plate 32.

[0039] like Figure 2 and Figure 3 As shown, in the present disclosure, the driving mechanism 4 includes a bidirectional screw 41, a driving motor 42 and a pushing ring 43, wherein the bidirectional screw 41 passes through the upper outer ring 21 in the vertical direction and is rotatably connected to the bidirectional screw 41 through a bearing, the driving motor 42 is fixedly arranged on the top of the upper outer ring 21 and is transmission-connected to the bidirectional screw 41, and two pushing rings 43 are provided, and the two pushing rings 43 are sleeved on the outside of the bidirectional screw 41 and are transmission-connected to the bidirectional screw 41, and the two pushing rings 43 are both slidably sleeved on the outside of the guide rod 23 in the vertical direction.

[0040] By setting up the calibration mechanism 3 and the driving mechanism 4, the driving motor 42 can drive the bidirectional screw 41 to rotate continuously after it is started. When the bidirectional screw 41 rotates, it drives the two pushing rings 43 guided by the guide rod 23 to move away from each other. During the movement of the two guide rods 23, the adjacent multiple calibration plates 32 are pushed respectively, so that they rotate around the pin shaft on the inner side of the U-shaped seat 31. During the rotation of the calibration plate 32, it comes into contact with the inner wall of the oil well, and then pushes the logging instrument body 1, so that the logging instrument body 1 moves to the center position of the oil well.

[0041] like Figure 3 As shown, in a preferred embodiment, the protective mechanism 5 includes a sliding column 51 and an annular protective cover 52, wherein the sliding column 51 slides in the vertical direction through the upper outer ring 21 and is fixedly arranged between the annular protective cover 52 and the adjacent push ring 43, and the annular protective cover 52 is located on the outside of the drive motor 42 and fits on the top of the upper outer ring 21.

[0042] Therefore, when the drive motor 42 needs to be inspected and repaired, the drive motor 42 drives the bidirectional screw 41 to rotate continuously after being started. When the bidirectional screw 41 rotates, it drives the two push rings 43 guided by the guide rod 23 to move away from each other. During the upward movement of the upper push ring 43, the sliding column 51 drives the annular protective cover 52 to move upward synchronously, thereby releasing the protection of the drive motor 42 by the annular protective cover 52, so that the drive motor 42 is exposed, which is convenient for maintenance. Compared with existing similar equipment, the structure is simpler, and the drive motor 42 can be inspected and repaired more conveniently, which is more convenient in actual use.

[0043] It should also be noted that the contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0044] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments / methods or examples. In addition, those skilled in the art may combine and combine different embodiments / methods or examples described in this specification and the features of different embodiments / methods or examples, unless they are contradictory.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0046] Those skilled in the art will appreciate that the above embodiments are merely intended to clearly illustrate the present disclosure and are not intended to limit the scope of the present disclosure. Other changes or modifications may be made based on the above disclosure, and such changes or modifications are still within the scope of the present disclosure.

Claims

1. A logging instrument for petroleum geological exploration, characterized in that: include: A well logging instrument body (1), the well logging instrument body (1) is used for geological exploration inside an oil well; A jacket mechanism (2), the jacket mechanism (2) being used for mounting a plurality of calibration mechanisms (3); A calibration mechanism (3), the calibration mechanism (3) being used to calibrate the position of the logging instrument body (1); A driving mechanism (4), the driving mechanism (4) comprising a bidirectional screw (41), a driving motor (42) and a pushing ring (43); The bidirectional screw (41) passes through the upper outer ring (21) in the vertical direction and is rotatably connected to the bidirectional screw (41) through a bearing. The driving motor (42) is fixedly arranged on the top of the upper outer ring (21) and is transmission-connected to the bidirectional screw (41). Two pushing rings (43) are provided. The two pushing rings (43) are sleeved on the outside of the bidirectional screw (41) and are transmission-connected to the bidirectional screw (41). The two pushing rings (43) are both slidably sleeved on the outside of the guide rod (23) in the vertical direction; and A protective mechanism (5), the protective mechanism (5) comprising a sliding column (51) and an annular protective cover (52); The sliding column (51) slides vertically through the upper outer ring (21) and is fixedly arranged between the annular protective cover (52) and the adjacent push ring (43). The annular protective cover (52) is located outside the drive motor (42) and fits on the top of the upper outer ring (21).

2. The logging instrument for petroleum geological exploration according to claim 1, characterized in that: The outer sleeve mechanism (2) comprises an upper outer sleeve ring (21) and a lower outer sleeve ring (22), and the upper outer sleeve ring (21) and the lower outer sleeve ring (22) are fixedly sleeved and arranged on the outside of the well logging instrument body (1) in sequence from top to bottom.

3. The logging instrument for petroleum geological exploration according to claim 2, characterized in that: The outer sleeve mechanism (2) further comprises a guide rod (23), wherein the guide rod (23) is fixedly connected between the upper outer sleeve ring (21) and the lower outer sleeve ring (22).

4. The logging instrument for petroleum geological exploration according to claim 3, characterized in that: The calibration mechanisms (3) are provided in multiple groups, and the multiple groups of calibration mechanisms (3) are evenly arranged at the bottom of the upper outer ring (21) and the top of the lower outer ring (22).

5. The logging instrument for petroleum geological exploration according to claim 4, characterized in that: The calibration mechanism (3) comprises a U-shaped seat (31) and a calibration plate (32); the upper outer ring (21) and the lower outer ring (22) are both fixedly connected to the adjacent U-shaped seat (31); the calibration plate (32) is rotatably arranged on the inner side of the U-shaped seat (31) via a pin; and a torsion spring is arranged between the inner wall of the U-shaped seat (31) and the calibration plate (32).

Images