Anti-blocking centralizer for underground logging

Abstract

The utility model relates to the technical field of centralizers, in particular to an anti-blocking centralizer for underground logging, which comprises a centralizing frame, the outer wall of the centralizing frame is fixedly connected with mounting blocks which are circumferentially distributed at equal intervals, the mounting blocks are connected with a fixing plate through mounting bolts, and one end of the fixing plate far away from the centralizing frame is fixedly connected with a fixing steel pipe. And a fixed drill rod is arranged in the fixed steel pipe. When the device is used, the fixing plates are inserted into the mounting grooves, then the mounting bolts are sequentially inserted into the first mounting holes and the second mounting holes, the mounting nuts are screwed, then the driving motor controls the fixed drill rods to rotate quickly, the fixed drill rods are inserted into soil by pressing the handle downwards, and the four fixed drill rods are inserted into the soil. And the position of the righting frame can be stably fixed without shaking, so that the influence on the righting of the detection instrument can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of centralizers, in particular to a downhole well logging anti-stuck centralizer. Background Art

[0002] The centralizer is a downhole tool to prevent eccentric wear in pumping wells. It is suitable for pumping wells with eccentric wear, especially for pumping wells and directional inclined wells with eccentric wear above the neutral point of the sucker rod. Below the neutral point of the sucker rod, it cooperates with the nylon centralizer on the sucker rod body to achieve better anti-eccentric wear effect.

[0003] After searching, the patent document with application number CN202022527080.X discloses a logging instrument straightening device, including: a straightening frame, a plurality of vertical strip holes in a circumferential array, a base connected to the bottom of the straightening frame, a pair of upper and lower rotating shafts provided in the strip holes; an adjustment mechanism, including a plurality of upper adjusting rods, the upper adjusting rods are rotatably connected to the rotating shafts, the upper adjusting rods rotate in a vertical plane, a lower adjusting rod is provided under the upper adjusting rod, one end of the lower adjusting rod is rotatably connected to the strip hole, and the lower adjusting rod is parallel to the upper adjusting rod.

[0004] In the above-mentioned prior art, although the detection instrument is installed on the straightening device through the adjustment mechanism, and the straightening device is placed in the oil well, when the upper adjustment rod is rotated, multiple support rods are in contact with the inner wall of the oil well, and the support rods are in a vertical state to realize automatic straightening of the detection instrument, and the outer wall of the arc block is tangent to the outer wall of the support rod to prevent the two ends of the support rod from being stuck on the inner wall of the oil well, which is convenient for taking out the straightening device. However, the position of the straightening frame is unstable and lacks corresponding fixing measures. When the straightening frame shakes, it is easy to affect the straightening of the detection instrument. Utility Model Content

[0005] The utility model aims to solve the shortcomings of the prior art that the position of the straightening frame is unstable and lacks corresponding fixing measures, and when the straightening frame shakes, it is easy to affect the straightening of the detection instrument, and thus proposes a downhole logging anti-stuck straightening device.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A downhole logging anti-stuck straightener comprises a straightening frame, the outer wall of which is fixedly connected with mounting blocks equidistantly distributed in a circumference, the mounting blocks are connected with a fixing plate via mounting bolts, the fixing plate is fixedly connected with a fixed steel pipe at one end away from the straightening frame, and a fixed drill rod is arranged inside the fixed steel pipe.

[0008] Preferably, a mounting groove is provided on the side of the mounting block away from the straightening frame, the fixing plate is slidably connected to the inner wall of the mounting groove, a limiting groove is provided on one side of the mounting groove, a limiting rod is fixedly connected to the side of the fixing plate close to the straightening frame, and the limiting rod is slidably connected to the inner wall of the limiting groove.

[0009] Preferably, a first mounting hole is formed on an outer wall of the mounting block, a second mounting hole is formed on the fixing plate, the mounting bolt passes through the first mounting hole and the second mounting hole in sequence, and a mounting nut is provided on the mounting bolt.

[0010] Preferably, a protective shell is slidably provided inside the fixed steel pipe, a driving motor is provided inside the protective shell, the output end of the driving motor is connected to the fixed drill rod, the bottom of the fixed drill rod is in a pointed cone shape, the outer wall of the fixed steel pipe is symmetrically provided with limiting openings, and the outer wall of the protective shell is symmetrically fixedly connected with a handle that is slidably connected to the limiting opening.

[0011] Preferably, a receiving groove for receiving and fixing a drill rod is provided on one side of the limiting opening.

[0012] Preferably, the bottom of the fixed steel pipe is open.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] When the device is in use, the fixing plate is inserted into the mounting groove, and the mounting bolts are inserted into the first mounting hole and the second mounting hole in sequence, and the mounting nuts are screwed on, and then the motor is driven to control the rapid rotation of the fixed drill rod, and then the fixed drill rod is inserted into the soil by pressing the handle downward. Through the four fixed drill rods inserted into the soil, the position of the straightening frame can be stably fixed without shaking, thereby avoiding affecting the straightening of the detection instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the external three-dimensional structure of the downhole well logging anti-stuck centralizer proposed by the utility model;

[0016] Figure 2 It is a schematic diagram of the three-dimensional structure of the connection of the mounting block, the mounting slot, the limit slot, the limit rod, and the mounting bolt;

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the connection of the fixed steel pipe, the storage groove and the limit opening;

[0018] Figure 4 It is a schematic diagram of the three-dimensional structure of the connection between the driving motor, the fixed drill rod and the fixed steel pipe.

[0019] In the figure: 1 straightening frame, 2 mounting block, 3 mounting bolts, 4 fixing plate, 5 fixing steel pipe, 6 fixing drill rod, 7 mounting slot, 8 limiting slot, 9 limiting rod, 10 first mounting hole, 11 second mounting hole, 12 mounting nut, 13 driving motor, 14 limiting opening, 15 handle, 16 storage slot. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] Reference Figure 1-Figure 4 The downhole logging anti-stuck centralizer comprises a centralizing frame 1, the outer wall of the centralizing frame 1 is fixedly connected with mounting blocks 2 which are equidistantly distributed in a circumference, the mounting blocks 2 are connected with a fixing plate 4 through mounting bolts 3, the fixing plate 4 is fixedly connected with a fixing steel pipe 5 at one end away from the centralizing frame 1, and a fixed drill pipe 6 is arranged inside the fixing steel pipe 5.

[0022] It should be noted that the righting frame 1 is a prior art, and an adjustment structure is provided inside the righting frame 1, which can right the detection instrument. The specific structure and principle are described in detail in the patent document proposed in the background technology: A logging instrument righting device application number: (CN202022527080.X), which will not be described again;

[0023] It should be noted that the bottom of the fixed steel pipe 5 is not in contact with the ground and can be fixed by moving the fixed drill rod 6 downward.

[0024] Furthermore, a mounting groove 7 is provided on a side of the mounting block 2 away from the straightening frame 1, the fixing plate 4 is slidably connected to the inner wall of the mounting groove 7, a limiting groove 8 is provided on one side of the mounting groove 7, a limiting rod 9 is fixedly connected to a side of the fixing plate 4 close to the straightening frame 1, and the limiting rod 9 is slidably connected to the inner wall of the limiting groove 8;

[0025] It should be noted that, by inserting the limiting rod 9 into the limiting groove 8 , the position of the fixing plate 4 can be limited, thereby preventing the fixing plate 4 from rotating.

[0026] Furthermore, a first mounting hole 10 is formed on the outer wall of the mounting block 2, a second mounting hole 11 is formed on the fixing plate 4, the mounting bolt 3 passes through the first mounting hole 10 and the second mounting hole 11 in sequence, and a mounting nut 12 is provided on the mounting bolt 3;

[0027] It should be noted that the mounting bolts 3 are inserted into the first mounting holes 10 and the second mounting holes 11 in sequence, and the mounting nuts 12 are screwed on, so that the fixing plate 4 can be installed and fixed on the straightening frame 1 .

[0028] Furthermore, a protective shell is slidably provided inside the fixed steel pipe 5, a driving motor 13 is provided inside the protective shell, an output end of the driving motor 13 is connected to the fixed drill rod 6, the bottom of the fixed drill rod 6 is in a pointed cone shape, a limiting opening 14 is symmetrically provided on the outer wall of the fixed steel pipe 5, and a handle 15 slidably connected to the limiting opening 14 is symmetrically fixedly connected to the outer wall of the protective shell;

[0029] It should be noted that, through the sliding connection between the handle 15 and the limit opening 14, the position of the drive motor 13 can be limited and fixed, so that the drive motor 13 can drive the fixed drill rod 6 to rotate normally;

[0030] It should be noted that the specific model and specifications of the drive motor 13 need to be selected based on the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it is not explained, and the power supply and opening and closing can be controlled by external equipment.

[0031] Furthermore, a receiving groove 16 for receiving and fixing the drill rod 6 is provided on one side of the limiting opening 14;

[0032] It should be noted that both limit openings 14 are provided with a receiving groove 16 . When not in use, the handle 15 can be moved upward and placed inside the receiving groove 16 , so that the fixed drill rod 6 can be stored inside the fixed steel pipe 5 .

[0033] Furthermore, the bottom of the fixed steel pipe 5 is opened.

[0034] Working principle of this utility model:

[0035] Insert the fixing plate 4 into the mounting groove 7, insert the mounting bolt 3 into the first mounting hole 10 and the second mounting hole 11 in sequence, tighten the mounting nut 12, and then drive the motor 13 to control the rapid rotation of the fixed drill rod 6, and then press the handle 15 downward to insert the fixed drill rod 6 into the soil. Through the four fixed drill rods 6 inserted into the soil, the position of the straightening frame 1 can be stably fixed without shaking, thereby avoiding affecting the straightening of the detection instrument.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A downhole logging anti-stuck centralizer, comprising a centralizing frame (1), characterized in that: The outer wall of the straightening frame (1) is fixedly connected with mounting blocks (2) which are equidistantly distributed around the circumference; the mounting blocks (2) are connected with a fixing plate (4) via mounting bolts (3); one end of the fixing plate (4) away from the straightening frame (1) is fixedly connected with a fixing steel pipe (5); a fixing drill rod (6) is arranged inside the fixing steel pipe (5).

2. The downhole logging anti-sticking centralizer according to claim 1, characterized in that: A mounting groove (7) is provided on a side of the mounting block (2) away from the straightening frame (1); the fixing plate (4) is slidably connected to the inner wall of the mounting groove (7); a limiting groove (8) is provided on one side of the mounting groove (7); a limiting rod (9) is fixedly connected to a side of the fixing plate (4) close to the straightening frame (1); and the limiting rod (9) is slidably connected to the inner wall of the limiting groove (8).

3. The downhole logging anti-sticking centralizer according to claim 1, characterized in that: A first mounting hole (10) is formed on the outer wall of the mounting block (2), a second mounting hole (11) is formed on the fixing plate (4), the mounting bolt (3) passes through the first mounting hole (10) and the second mounting hole (11) in sequence, and a mounting nut (12) is provided on the mounting bolt (3).

4. The downhole logging anti-sticking centralizer according to claim 1, characterized in that: A protective shell is slidably arranged inside the fixed steel pipe (5), a driving motor (13) is arranged inside the protective shell, an output end of the driving motor (13) is connected to a fixed drill rod (6), the bottom of the fixed drill rod (6) is in a pointed cone shape, a limiting opening (14) is symmetrically provided on the outer wall of the fixed steel pipe (5), and a handle (15) slidably connected to the limiting opening (14) is symmetrically fixedly connected to the outer wall of the protective shell.

5. The downhole logging anti-sticking centralizer according to claim 4, characterized in that: A receiving groove (16) for receiving and fixing a drill rod (6) is provided on one side of the limiting opening (14).

6. The downhole logging anti-sticking centralizer according to claim 1, characterized in that: The bottom of the fixed steel pipe (5) is open.

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