An optical fiber multi-parameter logging device

Abstract

The present invention belongs to the technical field of logging, and discloses an optical fiber multi-parameter logging device, including a trolley. A placement platform is fixedly installed at the top of the trolley. A main control box is arranged at the top of the placement platform. An electric winch is fixedly installed inside the trolley at a position below the placement platform. A logging cable is wound around the outer surface of the electric winch. One end of the trolley is fixedly installed with a telescopic support arm. One end of the telescopic support arm is fixedly installed with a downhole pulley. One end of the downhole pulley is fixedly installed with a depth counter. The outer surface of the logging cable is slidably connected to the outer surface of the downhole pulley. One end of the logging cable is fixedly connected to a logging component, which can automatically realize the height change of the logging component, avoid the need to release the fixation for adjustment when the position of the logging component needs to be finely adjusted, realize more convenient logging operations, greatly improve the accuracy and efficiency of logging, and provide more comprehensive data support for users.

Description

Technical Field

[0001] The present invention belongs to the technical field of well logging, and particularly relates to an optical fiber multi-parameter well logging device. Background Art

[0002] In recent years, optical fiber sensing technology has developed rapidly. Its characteristics of small size, light weight, strong anti-interference ability, high detection sensitivity, and the ability to achieve distributed and multi-parameter measurement provide a new solution for improving the level of well logging technology. At present, the application of optical fiber sensing well logging technology has been realized in the fields of oil and gas, hydrology, geological exploration, etc. to achieve real-time continuous measurement and accurate analysis of multi-parameters, greatly improving the accuracy and efficiency of well logging, and providing more comprehensive data support for users.

[0003] However, when the existing optical fiber multi-parameter well logging device conducts well logging work, it is necessary to first fix the well logging components. When it is necessary to finely adjust the position of the well logging components, it is necessary to release the fixation, adjust the position, and then repeat the fixation operation, which increases the operation complexity and time cost, and cannot automatically realize the change of the height of the well logging components, thus affecting the well logging efficiency. Summary of the Invention

[0004] In view of the problem that when the existing optical fiber multi-parameter well logging device conducts well logging work, it is necessary to first fix the well logging components. When it is necessary to finely adjust the position of the well logging components, it is necessary to release the fixation, adjust the position, and then repeat the fixation operation, which increases the operation complexity and time cost, and cannot automatically realize the change of the height of the well logging components, thus affecting the well logging efficiency, the present invention proposes the following technical solutions:

[0005] An optical fiber multi-parameter well logging device includes a trolley. A placement table is fixedly installed at the top of the trolley. A main control box is arranged at the top of the placement table. An electric winch is fixedly installed inside the trolley at a position below the placement table. A well logging cable is wound around the outer surface of the electric winch. One end of the trolley is fixedly installed with a telescopic support arm. One end of the telescopic support arm is fixedly installed with a downhole pulley. A depth counter is fixedly installed at one end of the downhole pulley. The outer surface of the well logging cable is slidably connected to the outer surface of the downhole pulley. One end of the well logging cable is fixedly connected to a well logging component.

[0006] Preferably, the logging assembly includes a movable cylinder fixedly connected to one end of a logging cable. A glass cover is fixedly installed inside the movable cylinder. A pipeline endoscope is rotatably connected inside the movable cylinder at a position inside the glass cover. The bottom end of the pipeline endoscope is fixedly connected to a first motor, and the outer surface of the first motor is fixedly installed inside the movable cylinder. The bottom end of the movable cylinder is fixedly connected to an electric telescopic rod, and the bottom end of the electric telescopic rod is fixedly connected to a fixed rod. A first fixing ring is fixedly connected to the outer surface of the top end of the fixed rod. A plurality of nickel alloy sheets are fixedly connected to the bottom end of the first fixing ring. One end of the nickel alloy sheet is fixedly connected to a second fixing ring. The bottom end of the second fixing ring is fixedly connected to a movable rod, and the outer surface of the movable rod is movably connected inside the fixed rod. A second motor is fixedly installed inside the top end of the fixed rod. The output end of the second motor is fixedly connected to a threaded rod. A threaded sleeve is fixedly connected inside the top end of the movable rod. The threaded rod is threadedly connected to the threaded sleeve. A slider is fixedly connected to the outer surface of the top end of the movable rod, and the outer surface of the slider is slidably connected inside the fixed rod.

[0007] Preferably, a first magnetic ring is fixedly connected to the bottom end of the fixed rod, and a sealing ring is fixedly connected to the position inside the first magnetic ring at the bottom end of the fixed rod. A second magnetic ring is fixedly connected to the outer surface of the movable rod at a position below the first magnetic ring.

[0008] Preferably, a positioning plate is fixedly connected to the position inside the fixed rod below the second motor. The outer surface of the threaded rod is threadedly connected inside the positioning plate. Pressure sensors are fixedly installed at both sides of the bottom end of the positioning plate.

[0009] Preferably, a plurality of rubber sheets are adhesively connected at equal intervals at the midpoint position of the outer surface of the nickel alloy sheet, and the shape of the rubber sheet is a cuboid.

[0010] Preferably, the sealing ring is made of rubber, and the inner surface of the sealing ring and the outer surface of the movable rod are mutually attached.

[0011] Preferably, the slider is rectangular, and a chute is opened at the position corresponding to the outer surface of the slider inside the fixed rod. The outer surface of the slider is slidably connected inside the chute.

[0012] Preferably, the horizontal height of the bottom end of the positioning plate is on the same horizontal line as the horizontal height of the top end of the chute.

[0013] Preferably, the centers of the first magnetic ring and the second magnetic ring are on the same vertical line.

[0014] The beneficial effects of the present invention are as follows:

[0015] (1) It can automatically realize the height change of the logging component, avoiding the need to release the fixation for adjustment when fine-tuning the position of the logging component, achieving more convenient logging operations, greatly improving the accuracy and efficiency of logging, and providing more comprehensive data support for users.

[0016] (2) It can enhance the connection stability between the fixed rod and the movable rod, effectively resist the rebound caused by the elasticity of the nickel alloy sheet, thereby ensuring a stable connection state between the nickel alloy sheet and the well wall. Description of the Drawings

[0017] Figure 1 Shown is a schematic structural diagram of an optical fiber multi-parameter logging device;

[0018] Figure 2 Shown is a schematic installation structure diagram of an electric winch;

[0019] Figure 3 Shown is a schematic installation structure diagram of the logging component;

[0020] Figure 4 Shown is a schematic installation structure diagram of the movable rod;

[0021] Figure 5 Shown is Figure 4 the installation structure diagram of area A in;

[0022] Figure 6 Shown is a schematic installation structure diagram of the positioning plate;

[0023] Figure 7 Shown is a schematic installation structure diagram of the pressure-sensitive starter;

[0024] In the figure: 1, trolley; 2, placement table; 3, main control box; 4, electric winch; 5, logging cable; 6, telescopic support arm; 7, downhole pulley; 8, depth counter; 9, logging component; 91, movable cylinder; 92, glass cover; 93, pipeline endoscope; 94, first motor; 95, electric telescopic rod; 96, fixed rod; 97, first fixing ring; 98, nickel alloy sheet; 99, second fixing ring; 910, movable rod; 911, second motor; 912, threaded rod; 913, threaded sleeve; 914, slider; 10, first magnetic ring; 11, sealing ring; 12, second magnetic ring; 13, rubber sheet; 14, positioning plate; 15, pressure-sensitive starter. Specific Embodiments

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0026] Embodiment 1

[0027] The present invention provides an optical fiber multi-parameter logging device, as Figures 1 to 7 shown, which includes a trolley 1. A placement platform 2 is fixedly installed at the top of the trolley 1. A main control box 3 is arranged at the top of the placement platform 2. An electric winch 4 is fixedly installed inside the trolley 1 at a position below the placement platform 2. A logging cable 5 is wound around the outer surface of the electric winch 4. The logging cable 5 is electrically connected to the main control box 3. One end of the trolley 1 is fixedly installed with a telescopic support arm 6. One end of the telescopic support arm 6 is fixedly installed with a downhole pulley 7. One end of the downhole pulley 7 is fixedly installed with a depth counter 8. The outer surface of the logging cable 5 is slidably connected to the outer surface of the downhole pulley 7. One end of the logging cable 5 is fixedly connected to a logging assembly 9.

[0028] As Figure 1 and Figure 6As shown, the logging assembly 9 includes a movable cylinder 91 fixedly connected to one end of the logging cable 5. Inside the movable cylinder 91, a glass cover 92 is fixedly installed. Inside the movable cylinder 91, a pipeline endoscope 93 is rotatably connected at a position inside the glass cover 92. The bottom end of the pipeline endoscope 93 is fixedly connected to a first motor 94, and the outer surface of the first motor 94 is fixedly installed inside the movable cylinder 91. The bottom end of the movable cylinder 91 is fixedly connected to an electric telescopic rod 95. The bottom end of the electric telescopic rod 95 is fixedly connected to a fixed rod 96. The outer surface of the top end of the fixed rod 96 is fixedly connected to a first fixing ring 97. The bottom end of the first fixing ring 97 is fixedly connected to a plurality of nickel alloy sheets 98. One end of the nickel alloy sheet 98 is fixedly connected to a second fixing ring 99. The bottom end of the second fixing ring 99 is fixedly connected to a movable rod 910. The outer surface of the movable rod 910 is movably connected inside the fixed rod 96. Inside the top end of the fixed rod 96, a second motor 911 is fixedly installed. The output end of the second motor 911 is fixedly connected to a threaded rod 912. Inside the top end of the movable rod 910, a threaded sleeve 913 is fixedly connected. The threaded rod 912 is threadedly connected to the threaded sleeve 913. The outer surface of the top end of the movable rod 910 is fixedly connected to a slider 914. The outer surface of the slider 914 is slidably connected inside the fixed rod 96. When logging work needs to be carried out, the electric winch 4 is started through the main control box 3. The rotation of the electric winch 4 drives the synchronous rotation of the logging cable 5, thereby realizing the release of the logging cable 5. The logging cable 5 enters the wellbore along the outer surface of the downhole pulley 7. The depth counter 8 records the lowering distance in real time to ensure the accurate positioning of the logging assembly 9 to the target depth. When the logging assembly 9 reaches the target depth, the second motor 911 is started through the main control box 3. The rotation of the output end of the second motor 911 drives the synchronous rotation of the threaded rod 912. The rotation of the threaded rod 912 drives the threaded sleeve 913 to move upward. The upward movement of the threaded sleeve 913 drives the synchronous movement of the movable rod 910. The upward movement of the movable rod 910 drives the slider 914 to slide synchronously inside the chute. As the movable rod 910 moves, it will drive the second fixing ring 99 to move synchronously. Since the first fixing ring 97 does not move, the nickel alloy sheet 98 is squeezed and bent outward, so that the nickel alloy sheet 98 contacts and presses against the wellbore wall to form a fixation. At this time, the fixation of the logging assembly 9 is completed. As the movable rod 910 moves, when the top end of the movable rod 910 contacts and triggers the pressure sensor starter 15, the electric telescopic rod 95 and the first motor 94 are started respectively. The electric telescopic rod 95 can drive the movable cylinder 91 to move. The movement of the movable cylinder 91 drives the glass cover 92 and the pipeline endoscope 93 to move synchronously. The first motor 94 can drive the pipeline endoscope 93 to rotate 360°, and perform high-definition optical scanning on the wellbore wall. The main control box 3 receives the image data in real time, and can automatically realize the height change of the logging assembly 9, avoiding the need to release the fixation for adjustment when the position of the logging assembly 9 needs to be fine-tuned, realizing a more convenient logging operation, greatly improving the accuracy and efficiency of logging, and providing more comprehensive data support for users.

[0029] AsFigure 1 and Figure 7 As shown in Figure 7 , a first magnetic ring 10 is fixedly connected to the bottom end of the fixed rod 96. A sealing ring 11 is fixedly connected to the inner side position of the bottom end of the fixed rod 96. A second magnetic ring 12 is fixedly connected to the outer surface of the movable rod 910 below the first magnetic ring 10. Since the movable rod 910 drives the second magnetic ring 12 to move towards the fixed rod 96, as the second magnetic ring 12 slowly moves, the first magnetic ring 10 and the second magnetic ring 12 approach each other, and finally they are adsorbed to each other due to the magnetic force. Since the first magnetic ring 10 and the second magnetic ring 12 are adsorbed to each other, the connection stability between the fixed rod 96 and the movable rod 910 is enhanced, thereby preventing the nickel alloy sheet 98 from rebounding due to elasticity, resulting in an unstable connection between the nickel alloy sheet 98 and the well wall. It can enhance the connection stability between the fixed rod 96 and the movable rod 910, effectively resist the rebound of the nickel alloy sheet 98 caused by elasticity, and thus ensure a stable connection state between the nickel alloy sheet 98 and the well wall.

[0030] As Figure 1 and Figure 6 As shown in Figure 6 , a positioning plate 14 is fixedly connected to the inner part of the fixed rod 96 below the second motor 911. The outer surface of the threaded rod 912 is threadedly connected to the inside of the positioning plate 14. Pressure sensors 15 are fixedly installed on both sides of the bottom end of the positioning plate 14. One pressure sensor 15 is electrically connected to the electric telescopic rod 95, and the other pressure sensor 15 is electrically connected to the first motor 94. As the movable rod 910 moves, when the top end of the movable rod 910 touches and triggers the pressure sensor 15, the electric telescopic rod 95 and the first motor 94 are respectively started to ensure that after the logging assembly 9 is fixed, the fine adjustment of the pipeline endoscope 93 is carried out, so as to achieve a delayed linkage effect.

[0031] As Figure 1 and Figure 3 As shown in Figure 3 , a plurality of rubber sheets 13 are adhesively bonded at equal intervals at the midpoint position of the outer surface of the nickel alloy sheet 98. The rubber sheets 13 are in the shape of a cuboid, and the rubber sheets 13 can increase the friction when contacting the well wall, thereby improving the connection stability between the nickel alloy sheet 98 and the well wall.

[0032] As Figure 1 and Figure 5 As shown in Figure 5 , the sealing ring 11 is made of rubber, and the inner surface of the sealing ring 11 fits with the outer surface of the movable rod 910, which can form a tight sealing layer to prevent external water flow from entering, and thus achieve a waterproof effect.

[0033] As Figure 1 and Figure 7As shown, the slider 914 is rectangular in shape. A chute is provided inside the fixed rod 96 at a position corresponding to the outer surface of the slider 914. The outer surface of the slider 914 is slidably connected inside the chute to ensure that the position of the fixed rod 96 does not change when it moves, effectively improving the stability of the fixed rod 96 when it moves.

[0034] As Figure 1 and Figure 6 shown, the horizontal height of the bottom end of the positioning plate 14 is on the same horizontal line as the horizontal height of the top end of the chute, ensuring that when the movable rod 910 reaches the top, it can trigger the pressure sensor starter 15, ensuring that a linkage effect can be formed between the movable rod 910 and the pressure sensor starter 15.

[0035] As Figure 1 and Figure 7 shown, the centers of the first magnetic ring 10 and the second magnetic ring 12 are on the same vertical line, ensuring that when the first magnetic ring 10 and the second magnetic ring 12 are adsorbed to each other by magnetic force, their positions do not shift, ensuring the connection stability between the first magnetic ring 10 and the second magnetic ring 12.

[0036] Working principle: During the actual use of the device, when well logging work needs to be carried out, the electric winch 4 is started through the main control box 3. The rotation of the electric winch 4 drives the synchronous rotation of the well logging cable 5, thereby realizing the release of the well logging cable 5. The well logging cable 5 enters the wellbore along the outer surface of the downhole pulley 7. The depth counter 8 records the lowering distance in real time to ensure that the well logging assembly 9 is accurately positioned at the target depth. When the well logging assembly 9 reaches the target depth, the second motor 911 is started through the main control box 3. The rotation of the output end of the second motor 911 drives the synchronous rotation of the threaded rod 912. The rotation of the threaded rod 912 drives the threaded sleeve 913 to move upward. The upward movement of the threaded sleeve 913 drives the synchronous movement of the movable rod 910. The upward movement of the movable rod 910 drives the slider 914 to slide synchronously inside the chute. As the movable rod 910 moves, it will drive the second fixing ring 99 to move synchronously. Since the first fixing ring 97 does not move, the nickel alloy sheet 98 is squeezed and bent outward, so that the nickel alloy sheet 98 contacts and presses against the well wall with the rubber sheet 13 to form a fixation. At this time, the fixation of the well logging assembly 9 is completed. As the movable rod 910 moves, when the top end of the movable rod 910 contacts and triggers the pressure sensor starter 15, the electric telescopic rod 95 and the first motor 94 are started respectively. The electric telescopic rod 95 can drive the movable cylinder 91 to move. The movement of the movable cylinder 91 drives the synchronous movement of the glass cover 92 and the pipeline endoscope 93. The first motor 94 can drive the pipeline endoscope 93 to rotate 360°. The well wall is scanned optically in high definition. The main control box 3 receives the image data in real time, and can automatically realize the height change of the well logging assembly 9, avoiding the need to release the fixation for adjustment when the position of the well logging assembly 9 needs to be finely adjusted, realizing a more convenient well logging operation, greatly improving the accuracy and efficiency of well logging, and providing more comprehensive data support for users;

[0037] Then, as the movable rod 910 drives the second magnetic coil 12 to move towards the fixed rod 96, as the second magnetic coil 12 moves slowly, the first magnetic coil 10 and the second magnetic coil 12 approach each other. Finally, due to the magnetic force, the two are adsorbed to each other. Since the first magnetic coil 10 and the second magnetic coil 12 are adsorbed to each other, the connection stability between the fixed rod 96 and the movable rod 910 is enhanced. Furthermore, the nickel alloy sheet 98 is prevented from rebounding due to elasticity, resulting in an unstable connection between the nickel alloy sheet 98 and the wellbore wall. It can enhance the connection stability between the fixed rod 96 and the movable rod 910, effectively resist the rebound of the nickel alloy sheet 98 caused by elasticity, and thus ensure a stable connection state between the nickel alloy sheet 98 and the wellbore wall.

[0038] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it.

Claims

1. An optical fiber multi-parameter logging device, characterized in that: The invention comprises a trolley (1), a placing table (2) is fixedly mounted on the top of the trolley (1), a main control box (3) is arranged on the top of the placing table (2), an electric winch (4) is fixedly mounted inside the trolley (1) at a position below the placing table (2), a logging cable (5) is wound around the outer surface of the electric winch (4), a retractable support arm (6) is fixedly mounted on one end of the trolley (1), a downhole pulley (7) is fixedly mounted on one end of the retractable support arm (6), a depth counter (8) is fixedly mounted on one end of the downhole pulley (7), the outer surface of the logging cable (5) is slidably connected to the outer surface of the downhole pulley (7), and one end of the logging cable (5) is fixedly connected to a logging assembly (9); The logging assembly (9) comprises a movable cylinder (91) fixedly connected to one end of the logging cable (5), a glass cover (92) fixedly installed inside the movable cylinder (91), a pipeline endoscope (93) rotatably connected inside the movable cylinder (91) at a position inside the glass cover (92), a first motor (94) fixedly connected to the bottom end of the pipeline endoscope (93), an outer surface of the first motor (94) fixedly installed inside the movable cylinder (91), an electric telescopic rod (95) fixedly connected to the bottom end of the movable cylinder (91), a fixed rod (96) fixedly connected to the bottom end of the electric telescopic rod (95), a first fixed ring (97) fixedly connected to the top outer surface of the fixed rod (96), and a plurality of fixed rings (97) fixedly connected to the bottom end of the first fixed ring (97). A nickel alloy sheet (98), wherein one end of the nickel alloy sheet (98) is fixedly connected to a second fixing ring (99), the bottom end of the second fixing ring (99) is fixedly connected to a movable rod (910), the outer surface of the movable rod (910) is movably connected to the inside of the fixing rod (96), a second motor (911) is fixedly installed inside the top end of the fixing rod (96), the output end of the second motor (911) is fixedly connected to a threaded rod (912), the top end of the movable rod (910) is fixedly connected to a threaded sleeve (913), the threaded rod (912) and the threaded sleeve (913) are threadedly connected, the top end of the movable rod (910) is fixedly connected to a slider (914), and the outer surface of the slider (914) is slidably connected to the inside of the fixing rod (96).

2. The optical fiber multi-parameter logging device according to claim 1, characterized in that: The bottom end of the fixed rod (96) is fixedly connected to a first magnetic ring (10), the bottom end of the fixed rod (96) is located inside the first magnetic ring (10) and is fixedly connected to a sealing ring (11), and the outer surface of the movable rod (910) is located below the first magnetic ring (10) and is fixedly connected to a second magnetic ring (12).

3. The optical fiber multi-parameter logging device according to claim 1, characterized in that: A positioning plate (14) is fixedly connected to the interior of the fixed rod (96) at a position below the second motor (911); the outer surface of the threaded rod (912) is connected to the interior of the positioning plate (14) via threads; and pressure-sensitive actuators (15) are fixedly installed at positions on both sides of the bottom end of the positioning plate (14).

4. The optical fiber multi-parameter logging device according to claim 1, characterized in that: A plurality of rubber sheets (13) are bonded at equal intervals at the midpoint of the outer surface of the nickel alloy sheet (98), and the rubber sheet (13) is in the shape of a rectangular parallelepiped.

5. The optical fiber multi-parameter logging device according to claim 2, characterized in that: The sealing ring (11) is made of rubber, and the inner surface of the sealing ring (11) and the outer surface of the movable rod (910) fit each other.

6. The optical fiber multi-parameter logging device according to claim 1, characterized in that: The sliding block (914) is rectangular in shape, a sliding groove is provided inside the fixing rod (96) at a position corresponding to the outer surface of the sliding block (914), and the outer surface of the sliding block (914) is slidably connected to the inside of the sliding groove.

7. The optical fiber multi-parameter logging device according to claim 3, characterized in that: The horizontal height of the bottom end of the positioning plate (14) and the horizontal height of the top end of the chute are on the same horizontal line.

8. The optical fiber multi-parameter logging device according to claim 2, characterized in that: The center of the first magnetic circle (10) and the center of the second magnetic circle (12) are located on the same vertical line.

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