Optical fiber logging centralizing device

Abstract

The utility model relates to the technical field of optical fiber logging, and discloses an optical fiber logging centralizing device which comprises a bottom frame, an L-shaped plate is fixedly connected to the outer surface of the top of the bottom frame, a connecting plate is arranged on one side of the L-shaped plate, a supporting shaft is rotationally connected to the outer surface of the connecting plate, a reel is arranged on the outer surface of the supporting shaft in a sleeved mode, and the reel is provided with a rotating shaft. A sliding plate is fixedly connected to the other end of the connecting plate, a sliding rod is fixedly connected to the outer surface of the top of the bottom frame, a spring is fixedly connected between the movable plate and the sliding plate, and an adjusting screw penetrates through the outer surface of the supporting plate in a threaded mode. According to the utility model, when the optical fiber is pulled, the reel drives the supporting shaft to rotate to generate stress, at the moment, the stress is conducted to the connecting plate and the sliding plate, the spring is deformed, the stress generated when the reel drives the supporting shaft to rotate when the optical fiber is pulled is balanced, the adjusting screw rod is rotated, the adjusting screw rod drives the movable plate to move, and the elastic strength of the spring is adjusted.

Description

Technical Field

[0001] This utility model relates to the field of fiber optic logging technology, specifically to a fiber optic logging centering device. Background Technology

[0002] In fiber optic logging operations, the optical fiber is carried by the logging vehicle and wound around the winch drum. After the detection equipment is connected to the fiber's tip, it is lowered into the well in sections. This process requires multiple people to pull the fiber at both the winch section and the wellhead to maintain a certain tension and prevent damage to the equipment due to tension imbalance.

[0003] In existing technologies, when manually pulling optical fibers during the insertion of the fibers into the well, a large amount of physical strength is required to balance the tension due to the weight of the monitoring equipment and the optical fibers themselves. Furthermore, this work requires multiple people to perform simultaneously, wasting manpower, material resources, and financial resources. Therefore, a fiber optic logging centering device has been proposed. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, this utility model provides a fiber optic logging centering device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fiber optic logging centering device, comprising a base frame, an L-shaped plate fixedly connected to the top outer surface of the base frame, a connecting plate provided on one side of the L-shaped plate, a support shaft rotatably connected to the outer surface of the connecting plate, a scroll sleeved on the outer surface of the support shaft, a sliding plate fixedly connected to the other end of the connecting plate, a sliding rod fixedly connected to the top outer surface of the base frame, the sliding plate movably sleeved on the outer surface of the sliding rod, a movable plate movably sleeved on the outer surface of the sliding rod, a spring fixedly connected between the movable plate and the sliding plate, the spring sleeved on the outside of the sliding rod, a support plate fixedly connected to the outer surface of the L-shaped plate, an adjusting screw threaded through the outer surface of the support plate, and the other end of the adjusting screw rotatably connected to the outer surface of the movable plate.

[0006] Furthermore, two side plates arranged symmetrically on the top outer surface of the base frame are fixedly connected, and positive and negative lead screws are rotatably connected between the two side plates. A knob is fixedly connected to the outer surface of the positive and negative lead screws, and two threaded plates are threadedly connected to the outer surface of the positive and negative lead screws. A guide wheel is provided between the opposite outer surfaces of the two threaded plates.

[0007] Furthermore, a fixing disc is fixedly sleeved on the outer surface of the support shaft, and a thread is formed on the outer surface of the support shaft, with an abutment disc threadedly connected to the thread.

[0008] Furthermore, the outer surface of the base frame is provided with a plurality of fixing ropes arranged in a circumferential array, and one end of each fixing rope is fixedly connected to a fixing nail.

[0009] Furthermore, a fixed rod is fixedly connected to the top outer surface of the movable plate, and a movable rod is fixedly connected to the bottom outer surface of the slide plate, with the movable rod being movably inserted inside the fixed rod.

[0010] Furthermore, the outer surface of the L-shaped plate is provided with a groove, and the support shaft is slidably connected to the inside of the groove.

[0011] Furthermore, a limiting rod is fixedly connected between the two side plates, and the two threaded plates are movably sleeved on the outer surface of the limiting rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This fiber optic logging centering device generates stress when the fiber optic cable is pulled, causing the support shaft to rotate. This stress is then transmitted to the connecting plate and the sliding plate, causing the spring to deform. This process balances the stress generated by the rotation of the support shaft when the fiber optic cable is pulled. Rotating the adjusting screw moves the movable plate, adjusting the elastic force of the spring.

[0014] This fiber optic logging centering device uses an optical fiber that passes between two guide wheels. Rotating a knob causes the positive and negative lead screws to rotate, which in turn move the threaded plate, causing the two guide wheels to move closer to each other. Guided by the two guide wheels, the optical fiber is positioned at the center of the wellhead, reducing friction and collision with the well wall. Attached Figure Description

[0015] Figure 1 This is a front view structural diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of this utility model from below;

[0018] Figure 4 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0019] In the diagram: 1. Base frame; 2. L-shaped plate; 3. Support shaft; 4. Connecting plate; 5. Slide plate; 6. Slide rod; 7. Spring; 8. Support plate; 9. Adjusting screw; 10. Side plate; 11. Positive and negative lead screw; 12. Knob; 13. Threaded plate; 14. Guide wheel; 15. Reel; 16. Fixed plate; 17. Abutment plate; 18. Fixed rope; 19. Fixed nail; 20. Fixed rod; 21. Movable rod. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1: Please refer to the following: Figures 1-4 This utility model provides a technical solution: a fiber optic logging centering device, including a base frame 1, an L-shaped plate 2 fixedly connected to the top outer surface of the base frame 1, a connecting plate 4 provided on one side of the L-shaped plate 2, a support shaft 3 rotatably connected to the outer surface of the connecting plate 4, a roller 15 sleeved on the outer surface of the support shaft 3, a sliding plate 5 fixedly connected to the other end of the connecting plate 4, a sliding rod 6 fixedly connected to the top outer surface of the base frame 1, the sliding plate 5 movably sleeved on the outer surface of the sliding rod 6, a movable plate movably sleeved on the outer surface of the sliding rod 6, a spring 7 fixedly connected between the movable plate and the sliding plate 5, the spring 7 sleeved on the outside of the sliding rod 6, and a support plate 6 fixedly connected to the outer surface of the L-shaped plate 2. The support plate 8 has an adjusting screw 9 threaded through its outer surface. The other end of the adjusting screw 9 is rotatably connected to the outer surface of the movable plate. Specifically, a spool 15 with an optical fiber wound around it is fitted onto the support shaft 3. During well logging, when the optical fiber is pulled, the spool 15 drives the support shaft 3 to rotate, generating stress. At this time, the stress is transmitted to the connecting plate 4 and the sliding plate 5, causing the spring 7 to deform. This balances the stress generated when the spool 15 drives the support shaft 3 to rotate during the pulling of the optical fiber. The elastic force of the spring 7 can be adjusted according to the actual needs of use. At this time, rotating the adjusting screw 9 causes the movable plate to move, thereby adjusting the elastic force of the spring 7.

[0022] In this embodiment, two side plates 10 arranged symmetrically on the top outer surface of the base frame 1 are fixedly connected. A positive and negative lead screw 11 is rotatably connected between the two side plates 10. A knob 12 is fixedly connected to the outer surface of the positive and negative lead screw 11. Two threaded plates 13 are threadedly connected to the outer surface of the positive and negative lead screw 11. A guide wheel 14 is provided between the opposite outer surfaces of the two threaded plates 13. Specifically, before the logging process, the optical fiber passes between the two guide wheels 14. The knob 12 is rotated, which drives the positive and negative lead screw 11 to rotate. The positive and negative lead screw 11 drives the threaded plates 13 to move, causing the two guide wheels 14 to move closer to each other. Through the guidance of the two guide wheels 14, the optical fiber can be placed at the center of the wellhead of the well to be logged, reducing friction and collision with the well wall.

[0023] In this embodiment, a fixing plate 16 is fixedly sleeved on the outer surface of the support shaft 3, and a threaded tooth is opened on the outer surface of the support shaft 3. A contact plate 17 is threadedly connected to the threaded tooth. Specifically, when installing the roll 15, one end of the roll 15 is abutted against the fixing plate 16, and then the contact plate 17 is screwed in and abutted against the roll 15, thereby installing the roll 15. When disassembling, the contact plate 17 is unscrewed and the roll 15 is removed.

[0024] In this embodiment, the outer surface of the base frame 1 is provided with a plurality of fixing ropes 18 arranged in a circumferential array. One end of each fixing rope 18 is fixedly connected to a fixing nail 19. Specifically, by pulling the fixing rope 18, the fixing nail 19 on one side is driven into the ground to fix the device.

[0025] In this embodiment, a fixed rod 20 is fixedly connected to the top outer surface of the movable plate, and a movable rod 21 is fixedly connected to the bottom outer surface of the slide plate 5. The movable rod 21 is movably inserted inside the fixed rod 20. Specifically, when the spring 7 deforms, the movable rod 21 slides inside the fixed rod 20, generating friction. Damping is generated through the friction between the movable rod 21 and the fixed rod 20, preventing the spring 7 from vibrating continuously.

[0026] In this embodiment, a groove is provided on the outer surface of the L-shaped plate 2, and the support shaft 3 is slidably connected to the inside of the groove. Specifically, the groove provides a channel for the movement of the support shaft 3.

[0027] In this embodiment, a limiting rod is fixedly connected between the two side plates 10, and two threaded plates 13 are movably sleeved on the outer surface of the limiting rod. Specifically, when the positive and negative screws 11 rotate, the threaded plates 13 slide on the outer surface of the limiting rod. The limiting rod limits the threaded plates 13 to prevent them from rotating with the positive and negative screws 11.

[0028] Working principle: In use, the spool 15 with optical fiber wound around it is sleeved on the support shaft 3. During well logging, when the optical fiber is pulled, the spool 15 drives the support shaft 3 to rotate, generating stress. At this time, the stress is transmitted to the connecting plate 4 and the sliding plate 5, causing the spring 7 to deform, thus balancing the stress generated by the spool 15 driving the support shaft 3 to rotate when the optical fiber is pulled. According to the actual needs of use, the elastic force of the spring 7 can be adjusted. At this time, the adjusting screw 9 is rotated, and the adjusting screw 9 drives the movable plate to move, thereby adjusting the elastic force of the spring 7.

[0029] Before the logging process, the optical fiber is passed between the two guide wheels 14. The knob 12 is turned, which drives the positive and negative screws 11 to rotate. The positive and negative screws 11 drive the threaded plate 13 to move, causing the two guide wheels 14 to move closer to each other. Through the guidance of the two guide wheels 14, the optical fiber can be placed at the center of the wellhead to be logged, reducing friction and collision with the well wall.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fiber optic well logging centralizer comprising a chassis (1), characterized in that: The outer surface of the top of the chassis (1) is fixedly connected with an L-shaped plate (2), one side of the L-shaped plate (2) is provided with a connecting plate (4), the outer surface of the connecting plate (4) is rotatably connected with a support shaft (3), the outer surface of the support shaft (3) is sleeved with a reel (15), the other end of the connecting plate (4) is fixedly connected with a sliding plate (5), the outer surface of the top of the chassis (1) is fixedly connected with a sliding rod (6), the sliding plate (5) is movably sleeved on the outer surface of the sliding rod (6), the outer surface of the sliding rod (6) is movably sleeved with a movable plate, the movable plate and the sliding plate (5) are fixedly connected with a spring (7), the spring (7) is sleeved on the outside of the sliding rod (6), the outer surface of the L-shaped plate (2) is fixedly connected with a support plate (8), the outer surface of the support plate (8) is threaded through with an adjusting screw (9), the other end of the adjusting screw (9) is rotatably connected with the outer surface of the movable plate.

2. The fiber optic well logging centralizer as claimed in claim 1, wherein: The outer surface of the top of the chassis (1) is fixedly connected with two left and right symmetrical side plates (10), the two side plates (10) are rotatably connected with a positive and negative screw rod (11), the outer surface of the positive and negative screw rod (11) is fixedly connected with a knob (12), the outer surface of the positive and negative screw rod (11) is threadedly connected with two threaded plates (13), the opposite outer surfaces of the two threaded plates (13) are provided with a guide wheel (14).

3. The fiber optic well logging centralizer of claim 1, wherein: The outer surface of the support shaft (3) is fixedly sleeved with a fixed disc (16), the outer surface of the support shaft (3) is provided with a thread, and the thread is threadedly connected with an abutting disc (17).

4. The fiber optic well logging centralizer of claim 1, wherein: The outer surface of the chassis (1) is circumferentially arranged with a plurality of fixed ropes (18), one end of the plurality of fixed ropes (18) is fixedly connected with a fixed nail (19).

5. The fiber optic well logging centralizer of claim 1, wherein: The outer surface of the top of the movable plate is fixedly connected with a fixed rod (20), the outer surface of the bottom of the sliding plate (5) is fixedly connected with a movable rod (21), and the movable rod (21) is movably inserted into the inside of the fixed rod (20).

6. The fiber optic well logging centralizer of claim 1, wherein: The outer surface of the L-shaped plate (2) is provided with a sliding groove, and the support shaft (3) is slidably connected with the inside of the sliding groove.

7. The fiber optic well logging centralizer of claim 2, wherein: The two side plates (10) are fixedly connected with a limiting rod, and the two threaded plates (13) are movably sleeved on the outer surface of the limiting rod.

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