An ultrasonic imaging logging device for coal bed gas detection

Abstract

The application discloses an ultrasonic imaging logging device for coal bed gas detection, which comprises a base, a controller and an ultrasonic detector, wherein the ultrasonic detector is arranged below the base and the bottom of the ultrasonic detector is inserted into a logging borehole. The device has the advantages that the driving motor is started to drive the connecting rod to move downwards, so that the ultrasonic detector is deeply inserted into the logging borehole, and the depth of the logging borehole can be adjusted conveniently; the coal bed gas in the logging borehole is detected during the movement of the ultrasonic detector, and the data at the detection position are displayed on a display screen, so that the user can check and record conveniently; and the two groups of first push plates and the two groups of second extruding blocks are tightly abutted against the inner wall of the logging borehole, so that the stability of the device as a whole during use is further improved, the stability during use is strengthened, and the stability of the ultrasonic detector during scanning and detection is improved.

Description

Technical Field

[0001] This invention relates to a coalbed methane detection component, specifically an ultrasonic imaging logging device for coalbed methane detection, belonging to the field of coalbed methane detection technology. Background Technology

[0002] Coalbed methane is a product of coal metamorphism and an unconventional natural gas. It is a new and potentially abundant energy source with huge reserves. It is usually generated and stored on the surface of coal molecules. In the process of coalbed methane extraction, ultrasonic logging technology is needed to detect the coalbed methane to understand its condition and facilitate the subsequent development of extraction plans.

[0003] In existing technologies, ultrasonic detectors are typically inserted into the wellbore to perform ultrasonic scanning of the wellbore interior, and the internal conditions are displayed and recorded on a monitor. However, existing ultrasonic imaging logging devices have certain limitations in use. Since the depth of coalbed methane inside the wellbore is unknown, the location to be detected by the ultrasonic detector is uncertain, requiring scanning of different locations inside the wellbore. Moreover, the ultrasonic detector needs to be continuously extended deeper into the wellbore. However, existing technologies mostly only fix the device at the wellhead, resulting in poor stability. When the ultrasonic detector moves, it is prone to shaking, which affects the scanning effect and causes errors in the scanned image. Therefore, an ultrasonic imaging logging device for coalbed methane detection is proposed to solve the above problems. Summary of the Invention

[0004] This invention achieves the above objective through the following technical solution: an ultrasonic imaging logging device for coalbed methane detection, comprising:

[0005] The system includes a base, a controller, and an ultrasonic detector. The ultrasonic detector is located below the base and its bottom is inserted into the logging well. The controller is located above the base and is used to control the ultrasonic detector to detect coalbed methane.

[0006] The base is equipped with a telescopic component at its bottom, which is used to adjust the depth of the ultrasonic detector. The telescopic component includes a drive motor, a rotating screw, and a connecting rod. The drive motor is fixedly installed in the inner cavity of the base, and the bottom output end of the drive motor extends downward through the base and is fixedly connected to the rotating screw. The connecting rod is threaded to the outer wall of the rotating screw, and the ultrasonic detector is installed on the connecting rod.

[0007] Preferably, a support rod is fixedly provided at the bottom of the base, a first fixing block is fixedly installed on the outer wall of the support rod, a first rotating screw is movably inserted into the inner wall of the inner cavity of the first fixing block, a first pressing block is threadedly connected to the outer wall of the first rotating screw, the right end of the first pressing block extends to the right through the first fixing block and is fixedly provided with a first push plate, and an anti-slip pad is fixedly adhered to the right wall of the first push plate.

[0008] Preferably, the inner wall of the first fixed block is provided with a movable groove, and the movable block is movably engaged with the inner wall of the movable groove. The movable block is fixedly disposed on the outer wall of the first extrusion block.

[0009] Preferably, a second fixing block is fixedly provided on the outer wall of the support rod, a second rotating screw is provided in the inner cavity of the second fixing block, a second extrusion block is threadedly connected to the outer wall of the second rotating screw, and the right end of the second extrusion block extends to the right through the second fixing block and is fixedly provided with a second push plate.

[0010] Preferably, the inner wall of the support rod cavity is rotatably connected to a first rotating rod via a bearing, and the other end of the first rotating rod is fixedly connected to a first rotating screw. The inner wall of the support rod cavity is rotatably connected to a second rotating rod via a bearing, and the other end of the second rotating rod is fixedly connected to a second rotating screw. A first sprocket is fixedly disposed on the outer wall of the first rotating rod, and a second sprocket is fixedly disposed on the outer wall of the second rotating rod. The outer walls of the first sprocket and the second sprocket are connected by a transmission chain.

[0011] Preferably, a turbine is fixedly provided on the outer wall of the first rotating rod, and a rotating motor is fixedly provided on the inner wall of the base cavity. The bottom output end of the rotating motor extends downward through the base and is fixedly provided with a worm gear, which meshes with the turbine.

[0012] Preferably, a sliding rod is fixedly provided at the bottom of the base, and a sliding block is fixedly provided on the outer wall of the connecting rod. A groove is provided on the top of the sliding block, and the sliding rod is movably engaged in the groove provided on the top of the sliding block.

[0013] Preferably, a rotary motor is fixedly installed at the bottom of the connecting rod, and the top of the ultrasonic detector is fixedly installed on the bottom output end of the rotary motor, and a conical block is fixedly installed at the bottom of the ultrasonic detector.

[0014] Preferably, a protective cover is fixedly installed on the top of the base, and the protective cover is sleeved on the outside of the controller. A display screen is installed on the outer wall of the controller, and control buttons are installed on the outer wall of the controller.

[0015] Preferably, a connecting plate is fixedly provided on the outer wall of the base, and a fixing bolt is inserted through the top of the connecting plate, and the fixing bolt extends into the ground around the well.

[0016] The beneficial effects of this invention are:

[0017] This ultrasonic imaging logging device for coalbed methane detection, through the connection of a base, controller, ultrasonic detector, drive motor, rotating screw, and connecting rod, allows the controller to start the drive motor, which in turn moves the connecting rod downwards, enabling the ultrasonic detector to penetrate deeper into the logging wellbore. This facilitates adjustment based on the wellbore depth. During its movement, the ultrasonic detector detects coalbed methane within the logging wellbore and displays the detected data on a screen for easy viewing and recording. Furthermore, the connection of a support rod, a first fixing block, a first push plate, a first push plate, a second fixing block, and a second push plate ensures that the two sets of first push plates and two sets of second pressing blocks are pressed firmly against the inner wall of the logging wellbore, further enhancing the overall stability of the device during use. This improves the stability of the ultrasonic detector during scanning and prevents vibrations that could cause errors in the scanned image. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the internal structure of the base of the present invention;

[0020] Figure 3 This is a schematic diagram of the connecting rod structure of the present invention;

[0021] Figure 4 This is a cross-sectional view of the support rod structure of the present invention;

[0022] Figure 5 This is a cross-sectional view of the first fixing block structure of the present invention;

[0023] Figure 6 This is a cross-sectional view of the second fixing block structure of the present invention;

[0024] Figure 7 This is a schematic diagram of the worm gear structure of the present invention.

[0025] In the diagram: 1. Base; 101. Connecting plate; 102. Fixing bolt; 2. Controller; 201. Display screen; 202. Control buttons; 203. Protective cover; 3. Ultrasonic detector; 301. Connecting rod; 302. Rotary motor; 303. Drive motor; 304. Rotating screw; 305. Conical block; 306. Sliding block; 307. Sliding rod; 4. Support rod; 401. First rotating rod; 402. Turbine; 403 404. Rotating motor; 405. Worm gear; 406. First sprocket; 407. Transmission chain; 408. Second rotating rod; 409. Second sprocket; 500. First fixed block; 501. First rotating screw; 502. First pressing block; 503. First push plate; 504. Anti-slip pad; 505. Moving groove; 506. Moving block; 607. Second fixed block; 601. Second rotating screw; 602. Second pressing block; 603. Second push plate. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] This invention discloses an ultrasonic imaging logging device for coalbed methane detection, such as... Figure 1-7 As shown, it includes:

[0028] The system includes a base 1, a controller 2, and an ultrasonic detector 3. The ultrasonic detector 3 is located below the base 1 and its bottom is inserted into the logging well. The controller 2 is located above the base 1 and is used to control the ultrasonic detector 3 to detect coalbed methane. By inserting the ultrasonic detector 3 into the logging well, the system can detect the coalbed methane in the logging well.

[0029] A telescopic assembly is provided at the bottom of the base 1. This telescopic assembly is used to adjust the depth of the ultrasonic detector 3. The telescopic assembly includes a drive motor 303, a rotating screw 304, and a connecting rod 301. The drive motor 303 is fixedly installed in the inner cavity of the base 1, and its bottom output end extends downward through the base 1 and is fixedly connected to the rotating screw 304. The connecting rod 301 is threaded onto the outer wall of the rotating screw 304, and the ultrasonic detector 3 is mounted on the connecting rod 301. By starting the drive motor 303, the drive motor 303 drives the rotating screw 304 to rotate clockwise forward. The forward-rotating screw 304 drives the connecting rod 301 to move downwards. The downward-moving connecting rod 301 drives the ultrasonic detector 3 to move downwards, extending the ultrasonic detector 3 into the logging wellbore. This allows for easy adjustment based on the logging wellbore depth. During its movement, the ultrasonic detector 3 detects coalbed methane within the logging wellbore. Furthermore, by activating the drive motor 303, the drive motor 303 drives the rotating screw 304 to rotate counterclockwise backwards. This causes the connecting rod 301 to move the ultrasonic detector 3 upwards, facilitating its retraction and storage.

[0030] A support rod 4 is fixedly installed at the bottom of the base 1. A first fixing block 5 is fixedly installed on the outer wall of the support rod 4. A first rotating screw 501 is movably inserted into the inner wall of the first fixing block 5. A first pressing block 502 is threadedly connected to the outer wall of the first rotating screw 501. The right end of the first pressing block 502 extends to the right through the first fixing block 5 and is fixedly installed with a first push plate 503. An anti-slip pad 504 is fixedly adhered to the right wall of the first push plate 503. The first fixing block 5 and the first push plate 503 are both inserted into the logging wellbore. The rotation of the first rotating screw 501 drives the first pressing block 502 to move to the right, so that the first pressing block 502 moves to the right. The extrusion block 502 drives the first push plate 503 to move to the right, causing the first push plate 503 to extrude into the inner wall of the logging well. Two sets of these are provided, symmetrically distributed, via the support rod 4, the first fixing block 5, the first rotating screw 501, the first extrusion block 502, the first push plate 503, and the anti-slip pad 504. The first push plate 503 on the other side can be adjusted to extrude into the inner wall of the logging well, thereby improving the stability of the device during use and enhancing the stability of the ultrasonic detector 3 during scanning. This prevents the ultrasonic detector 3 from shaking during scanning, which could cause errors in the scanned image.

[0031] The inner wall of the first fixed block 5 has a moving groove 505, and the moving block 506 is movably engaged with the inner wall of the moving groove 505. The moving block 506 is fixedly disposed on the outer wall of the first extrusion block 502. By restricting the moving position of the moving block 506 through the moving groove 505, it is convenient to limit the moving path and moving range of the first extrusion block 502.

[0032] A second fixing block 6 is fixedly installed on the outer wall of the support rod 4. A second rotating screw 601 is installed in the inner cavity of the second fixing block 6. A second pressing block 602 is threadedly connected to the outer wall of the second rotating screw 601. The right end of the second pressing block 602 extends to the right through the second fixing block 6 and is fixedly installed with a second push plate 603. There are two sets of the second fixing block 6, the second rotating screw 601, the second pressing block 602 and the second push plate 603, which are symmetrically distributed. The second pressing block 602 is moved by the rotation of the second rotating screw 601, so that the two sets of second pressing blocks 602 press against the inner wall of the logging well, further fixing the device and facilitating the stability of the device during use.

[0033] The inner wall of the support rod 4 is rotatably connected to a first rotating rod 401 via a bearing, and the other end of the first rotating rod 401 is fixedly connected to a first rotating screw 501. The inner wall of the support rod 4 is rotatably connected to a second rotating rod 407 via a bearing, and the other end of the second rotating rod 407 is fixedly connected to a second rotating screw 601. A first sprocket 405 is fixedly mounted on the outer wall of the first rotating rod 401, and a second sprocket 408 is fixedly mounted on the outer wall of the second rotating rod 407. The outer walls of the first sprocket 405 and the second sprocket 408 are connected by a transmission chain 406. The transmission chain 406 connects the movement states of the first sprocket 405 and the second sprocket 408, thereby connecting the movement states of the first rotating rod 401 and the second rotating rod 407. This causes the first push plate 503 and the second push plate 603 to move outward together, pressing against the inner wall of the logging wellbore. This reduces the number of operation steps, facilitates operation, and improves operational efficiency.

[0034] A turbine 402 is fixedly installed on the outer wall of the first rotating rod 401, and a rotating motor 403 is fixedly installed on the inner wall of the inner cavity of the base 1. The bottom output end of the rotating motor 403 extends downward through the base 1 and is fixedly installed with a worm 404. The worm 404 is meshed with the turbine 402. By starting the rotating motor 403, the worm 404 is driven to rotate, which causes the outer wall of the rotating worm 404 to squeeze and push the turbine 402, causing the turbine 402 to rotate, thereby driving the first rotating rod 401 to rotate, so that the first push plate 503 and the second push plate 603 are adjusted.

[0035] A sliding rod 307 is fixedly installed at the bottom of the base 1, and a sliding block 306 is fixedly installed on the outer wall of the connecting rod 301. A groove is opened at the top of the sliding block 306, and the sliding rod 307 is movably engaged in the groove opened at the top of the sliding block 306. By restricting the position of the sliding block 306 by the sliding rod 307, the movement path and movement range of the connecting rod 301 are restricted, so that the ultrasonic detector 3 moves smoothly.

[0036] A rotary motor 302 is fixedly installed at the bottom of the connecting rod 301, and the top of the ultrasonic detector 3 is fixedly installed on the bottom output end of the rotary motor 302 for controlling and adjusting the detection direction of the ultrasonic detector 3. A conical block 305 is fixedly installed at the bottom of the ultrasonic detector 3 to protect the ultrasonic detector 3.

[0037] A protective cover 203 is fixedly installed on the top of the base 1, and the protective cover 203 is sleeved on the outside of the controller 2 to protect the controller 2. A display screen 201 is installed on the outer wall of the controller 2 to display and record detection data for easy viewing by the user. Control buttons 202 are installed on the outer wall of the controller 2 to control the operation of various devices and components for easy unified operation.

[0038] A connecting plate 101 is fixedly installed on the outer wall of the base 1. A fixing bolt 102 is inserted through the top of the connecting plate 101 and extends into the ground around the well to restrict the installation of the base 1 around the well.

[0039] For those skilled in the art, by setting up the connection relationship between the base 1, controller 2, ultrasonic detector 3, drive motor 303, rotating screw 304, and connecting rod 301, the controller 2 is used to start the drive motor 303, which in turn moves the connecting rod 301 downward, allowing the ultrasonic detector 3 to penetrate deeper into the logging wellbore. This facilitates adjustment based on the logging wellbore depth. During its movement, the ultrasonic detector 3 detects coalbed methane within the logging wellbore and displays the detected data on the display screen 201 for easy viewing and recording by the user. Furthermore, by setting up the connection relationship between the support rod 4, the first fixing block 5, the first push plate 503, the first push plate 503, the second fixing block 6, and the second push plate 603, the two sets of first push plates 503 and the two sets of second pressing blocks 602 are pressed tightly against the inner wall of the logging wellbore, further improving the overall stability of the device during use. This enhances the stability of the device during operation and improves the stability of the ultrasonic detector 3 during scanning, preventing vibrations that could cause errors in the scanned image.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An ultrasonic imaging logging device for coalbed methane detection, comprising: The base (1), controller (2) and ultrasonic detector (3) are provided. The ultrasonic detector (3) is located below the base (1) and its bottom is inserted into the wellbore. The controller (2) is located above the base (1) and is used to control the ultrasonic detector (3) to detect coalbed methane. The base (1) is characterized by having a telescopic component at its bottom. The telescopic component is used to adjust the position depth of the ultrasonic detector (3). The telescopic component includes a drive motor (303), a rotating screw (304) and a connecting rod (301). The drive motor (303) is fixedly located in the inner cavity of the base (1), and the bottom output end of the drive motor (303) extends downward through the base (1) and is fixedly connected to the rotating screw (304). The connecting rod (301) is threadedly connected to the outer wall of the rotating screw (304), and the ultrasonic detector (3) is located on the connecting rod (301). The base (1) is fixedly provided with a support rod (4) at the bottom. A first fixing block (5) is fixedly installed on the outer wall of the support rod (4). A first rotating screw (501) is movably inserted into the inner wall of the first fixing block (5). A first extrusion block (502) is threadedly connected to the outer wall of the first rotating screw (501). The right end of the first extrusion block (502) extends to the right through the first fixing block (5) and is fixedly provided with a first push plate (503). An anti-slip pad (504) is fixedly glued to the right wall of the first push plate (503). The support rod (4) has a second fixing block (6) fixedly installed on its outer wall. The second fixing block (6) has a second rotating screw (601) installed in its inner cavity. The second rotating screw (601) has a second pressing block (602) threadedly connected to its outer wall. The right end of the second pressing block (602) extends to the right through the second fixing block (6) and is fixedly installed with a second push plate (603). The inner wall of the support rod (4) is rotatably connected to a first rotating rod (401) via a bearing, and the other end of the first rotating rod (401) is fixedly connected to a first rotating screw (501). The inner wall of the support rod (4) is rotatably connected to a second rotating rod (407) via a bearing, and the other end of the second rotating rod (407) is fixedly connected to a second rotating screw (601). A first sprocket (405) is fixedly installed on the outer wall of the first rotating rod (401), and a second sprocket (408) is fixedly installed on the outer wall of the second rotating rod (407). The outer walls of the first sprocket (405) and the second sprocket (408) are connected by a transmission chain (406).

2. The ultrasonic imaging logging device for coalbed methane detection according to claim 1, characterized in that: The inner wall of the first fixed block (5) is provided with a moving groove (505), and the moving block (506) is movably engaged with the inner wall of the moving groove (505). The moving block (506) is fixedly disposed on the outer wall of the first extrusion block (502).

3. The ultrasonic imaging logging device for coalbed methane detection according to claim 2, characterized in that: A turbine (402) is fixedly installed on the outer wall of the first rotating rod (401), and a rotating motor (403) is fixedly installed on the inner wall of the inner cavity of the base (1). The bottom output end of the rotating motor (403) extends downward through the base (1) and is fixedly installed with a worm (404), and the worm (404) meshes with the turbine (402).

4. The ultrasonic imaging logging device for coalbed methane detection according to claim 3, characterized in that: The base (1) is fixedly provided with a sliding rod (307) at the bottom, and a sliding block (306) is fixedly provided on the outer wall of the connecting rod (301). The top of the sliding block (306) is provided with a groove, and the sliding rod (307) is movably engaged in the groove on the top of the sliding block (306).

5. The ultrasonic imaging logging device for coalbed methane detection according to claim 4, characterized in that: A rotary motor (302) is fixedly installed at the bottom of the connecting rod (301), and the top of the ultrasonic detector (3) is fixedly installed on the bottom output end of the rotary motor (302). A cone block (305) is fixedly installed at the bottom of the ultrasonic detector (3).

6. The ultrasonic imaging logging device for coalbed methane detection according to claim 5, characterized in that: The base (1) is fixedly provided with a protective cover (203) on the top, and the protective cover (203) is sleeved on the outside of the controller (2). The outer wall of the controller (2) is provided with a display screen (201) and control buttons (202).

7. The ultrasonic imaging logging device for coalbed methane detection according to claim 6, characterized in that: A connecting plate (101) is fixedly installed on the outer wall of the base (1). A fixing bolt (102) is inserted through the top of the connecting plate (101), and the fixing bolt (102) extends into the ground around the well.

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