Underground pressure testing device

Abstract

The utility model relates to the technical field of underground pressure testing, and discloses an underground pressure testing device which comprises a bottom plate, a supporting seat is fixedly installed on the surface of the top of the bottom plate, a sliding plate is arranged on the surface of the top of the supporting seat, and a winch is installed on the surface of the top of the sliding plate. A first hand wheel is rotated to drive a rotating rod to rotate, a sliding plate can be controlled to move along a sliding groove in a supporting plate through meshing of a first bevel gear and a second bevel gear, meshing of a worm and a worm gear and meshing of a gear and a rack, and therefore the oil pressure sensor can be sent to the corresponding position of an oil well opening. The oil pressure sensor is arranged on the winch, the pressure in an oil well can be conveniently tested, the oil pressure sensor is lowered to the corresponding position in the oil well through the connecting rope on the winch, the pressure in the oil well can be tested through the oil pressure sensor, meanwhile, the oil pressure sensor can be taken back through the connecting rope on the winch, and use is convenient.

Description

Technical Field

[0001] This utility model relates to the field of downhole pressure testing technology, specifically to a downhole pressure testing device for oil wells. Background Technology

[0002] In oil well development and related production operations, accurately acquiring downhole pressure data is crucial, as it relates to the well's production efficiency, safe operation, and the formulation of subsequent production strategies. Oil pressure sensors, as key equipment for acquiring downhole pressure data, need to be accurately placed at designated locations downhole. However, in actual operation, oil wells are typically quite deep, making it a significant challenge to accurately and conveniently deliver oil pressure sensors to the appropriate depth. Traditional methods often have numerous inconveniences during operation, such as difficulty in precisely controlling the sensor's lowering depth, resulting in inaccurate pressure data and affecting the assessment of the well's production status. Therefore, we propose a downhole pressure testing device. Utility Model Content

[0003] In view of the shortcomings of the prior art, this utility model provides a downhole pressure testing device for oil wells to solve the problems mentioned in the background art.

[0004] This utility model provides the following technical solution: an oil well downhole pressure testing device, including a base plate, a support seat fixedly installed on the top surface of the base plate, a sliding plate provided on the top surface of the support seat, a winch installed on the top surface of the sliding plate, a connecting rope provided on the winch, and an oil pressure sensor connected to one end of the connecting rope, an installation groove opened on the right side of the bottom surface of the sliding plate, and a rack installed in the installation groove, an installation cavity opened inside the right side of the support seat, and a rotating shaft rotatably connected to the inner walls of both sides of the installation cavity, a gear and a worm gear respectively installed on the outer rings of the two sides of the rotating shaft, a worm gear rotatably connected in the cavity opened in the support seat, a second bevel gear installed at one end of the worm gear, and a rotating rod extending to the outside of the support seat rotatably connected in the installation cavity opened in the support seat, a first bevel gear installed at one end of the rotating rod.

[0005] As a preferred technical solution of this utility model, support plates are welded to both sides of the top surface of the base plate, and a sliding groove is opened on the side of the two support plates that are close to each other. A slider is placed in the sliding groove, and the outer wall of the slider is fixedly connected to the side wall of the sliding plate. The vertical section of the sliding groove is T-shaped.

[0006] In a preferred embodiment of this invention, the worm gear and the worm mesh, the gear and the rack mesh, and the first bevel gear and the second bevel gear mesh.

[0007] As a preferred embodiment of this utility model, the right end of the rotating rod passes through the support plate located on the right side, and a first handwheel is installed at the end of the rotating rod that passes through the support plate on the right side.

[0008] As a preferred technical solution of this utility model, a through hole is provided on one side of the top of the sliding plate, and one end of the connecting rope on the winch passes through the through hole on the sliding plate. A placement groove matching the top of the oil pressure sensor is provided on the bottom surface of the sliding plate located at the through hole.

[0009] As a preferred technical solution of this utility model, the support base and the base plate are both provided with a placement groove on one side of the front, and the inner wall of the placement groove is provided with a protective rubber pad. The placement groove can accommodate an oil pressure sensor, and four universal wheels are installed on the bottom surface of the base plate.

[0010] As a preferred technical solution of this utility model, the support base has a groove on the lower part of one side of the back, and the bottom plate has a threaded hole penetrating the bottom plate at the top of the groove on the back of the support base, and a matching threaded rod is provided in the threaded hole. A second handwheel is installed on the top of the threaded rod, and a limit plate is installed at the bottom of the threaded rod.

[0011] As a preferred embodiment of this utility model, a connecting plate is fixedly installed on the upper back of the two support plates on one side close to each other, and a handle is installed on the connecting plate.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This downhole pressure testing device, by rotating the first handwheel, drives the rotating rod to rotate. Utilizing the meshing of the first and second bevel gears, the meshing of the worm and the worm wheel, and the meshing of the gear and rack, it can control the sliding plate to move along the groove on the support plate, thereby sending the oil pressure sensor to the corresponding position at the wellhead, facilitating the testing of the pressure inside the oil well.

[0014] 2. This downhole pressure testing device lowers the oil pressure sensor to the corresponding position in the oil well via a connecting rope on a winch. The oil pressure sensor can then be used to test the pressure in the oil well and transmit the relevant data to the surface. After the pressure test in the oil well is completed, the winch can be restarted to reverse the winch and the oil pressure sensor can be returned to the placement slot opened in the base plate and support seat via the connecting rope. It is quite convenient to use. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a cross-sectional view of the support base and sliding plate of this utility model;

[0017] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0018] Figure 4 This is a schematic diagram of the sliding plate removal structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the rear structure of this utility model.

[0020] In the diagram: 1. Base plate; 2. Hydraulic pressure sensor; 3. Support base; 4. Caster wheel; 5. Sliding plate; 6. Winch; 7. Connecting plate; 8. Handle; 9. Support plate; 10. First handwheel; 11. Rotating rod; 12. Gear; 13. Worm gear; 14. Shaft; 15. Worm; 16. Rack; 17. First bevel gear; 18. Second bevel gear; 19. Second handwheel; 20. Threaded rod; 21. Limiting plate. Detailed Implementation

[0021] 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.

[0022] Example 1: Please refer to Figures 1-5The downhole pressure testing device comprises a base plate 1, a support base 3, and a sliding plate 5. The base plate 1 serves as the fundamental load-bearing component of the entire device, with the support base 3 fixedly mounted on its top surface. The support base 3 is the main support structure of the device. A sliding plate 5 is installed on the top surface of the support base 3, and a winch 6 is mounted on the top surface of the sliding plate 5. A connecting rope is wound around the winch 6, with one end of the rope connected to an oil pressure sensor 2. When downhole pressure testing is required, the device is moved to a suitable position at the wellhead. The position of the device can be easily adjusted using the casters 4. During movement, the oil pressure sensor 2 can be... The pressure sensor 2 is placed in a slot on one side of the support base 3 and the base plate 1. The protective rubber pad on the inner wall of the slot can effectively prevent the sensor from being damaged by impact. After reaching the designated position, the operator turns the first handwheel 10, which drives the rotating rod 11 to rotate. Since the first bevel gear 17 is installed at one end of the rotating rod 11, and the second bevel gear 18 is installed at one end of the worm gear 15 in the mounting cavity of the support base 3, and the first bevel gear 17 and the second bevel gear 18 mesh, the rotation of the rotating rod 11 will drive the worm gear 15 to rotate. Furthermore, because the worm gear 15 is connected to the worm wheel 13 on the rotating shaft 14... The gear 12 on the rotating shaft 14 meshes with the rack 16 in the mounting groove on the bottom right side of the sliding plate 5. Therefore, the rotation of the worm gear 15 will drive the gear 12 to rotate, thereby causing the sliding plate 5 to move laterally along the sliding groove opened on the support plate 9. The vertical section of the sliding groove is T-shaped. The slider is fixedly connected to the two side walls of the sliding plate 5 to ensure the stability of the sliding plate 5's movement. After the sliding plate 5 moves to a suitable position at the wellhead, the winch 6 is started. The winch 6 releases the connecting rope and slowly lowers the oil pressure sensor 2 to the designated position at the bottom of the oil well for pressure testing. The data can be transmitted to the network signal, etc. After the test is completed on the ground, the connecting rope is retrieved again by the winch 6, which allows the oil pressure sensor 2 to be removed from the oil well and pulled back to the placement groove at the bottom of the top through hole of the sliding plate 5. This can fix the oil pressure sensor 2 to a certain extent. Then, the first handwheel 10 is rotated in the opposite direction to reset the sliding plate 5. At this time, the oil pressure sensor 2 can be moved to the placement groove opened by the base plate 1 and the support base 3. The inner wall of the placement groove is also equipped with a protective rubber pad, which can protect the oil pressure sensor 2 and facilitate the storage and movement of the device.

[0023] Example 2: Please refer to Figures 1-5Based on Embodiment 1, this embodiment provides a detailed description of the device's fixing function. After the device is moved to a suitable position at the wellhead, in addition to adjusting the position of the sliding plate 5 by rotating the first handwheel 10, the operator can also fix the device by rotating the second handwheel 19. The support base 3 has a groove on its lower back side. The bottom plate 1 has a threaded hole penetrating the bottom plate 1 at the top of the groove on the back of the support base 3. A matching threaded rod 20 is installed in the threaded hole. The second handwheel 19 is mounted on the top of the threaded rod 20, and a limit plate 21 is installed at the bottom end. The operator rotates the second handwheel 19, causing the threaded rod 20 to move along the threaded hole in the bottom plate 1. The device moves downwards within the hole, which in turn moves the limiting plate 21 downwards, allowing the limiting plate 21 to contact the ground and generate a certain pressure, thereby firmly fixing the device to the ground and preventing it from moving during the test, which would affect the accuracy and safety of the test. After the test is completed, the second handwheel 19 is rotated in the opposite direction to move the threaded rod 20 upwards, and the limiting plate 21 leaves the ground. The device can then be moved again by the handle 8. At the same time, a connecting plate 7 is fixedly installed on the upper back of the two support plates 9 that are close to each other. A handle 8 is installed on the connecting plate 7, allowing the operator to easily push the device to move, which improves the portability and ease of operation of the device.

[0024] Implementation effect: By rotating the first handwheel 10, the rotating rod 11 is driven to rotate. By utilizing the meshing of the first bevel gear 17 and the second bevel gear 18, the meshing of the worm gear 15 and the worm wheel 13, and the meshing of the gear 12 and the rack 16, the sliding plate 5 can be controlled to move along the sliding groove on the support plate 9, thereby sending the oil pressure sensor 2 to the corresponding position at the wellhead, which is convenient for testing the pressure in the oil well.

[0025] The hydraulic pressure sensor 2 can be lowered to the corresponding position in the oil well by starting the winch 6 and the connecting rope on the winch 6. The hydraulic pressure sensor 2 can be used to test the pressure in the oil well and transmit the relevant data to the surface. After the pressure test in the oil well is completed, the winch 6 can be started again to reverse the winch 6 and the hydraulic pressure sensor 2 can be returned to the placement slot opened in the base plate 1 and the support base 3 by the connecting rope. It is quite convenient to use.

[0026] 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 downhole pressure testing device, comprising a base plate (1), characterized in that: A support base (3) is fixedly installed on the top surface of the base plate (1). A sliding plate (5) is provided on the top surface of the support base (3). A winch (6) is installed on the top surface of the sliding plate (5), and a connecting rope is provided on the winch (6). One end of the connecting rope is connected to a hydraulic pressure sensor (2). An installation groove is opened on the right side of the bottom surface of the sliding plate (5), and a rack (16) is installed in the installation groove. An installation cavity is opened inside the right side of the support base (3), and the rack (16) is installed in the groove. A rotating shaft (14) is rotatably connected to the inner walls of both sides of the cavity. A gear (12) and a worm gear (13) are respectively installed on the outer rings of both sides of the rotating shaft (14). A worm (15) is also rotatably connected to the cavity opened in the support seat (3). A second bevel gear (18) is installed at one end of the worm (15). A rotating rod (11) extending to the outside of the support seat (3) is also rotatably connected to the mounting cavity opened in the support seat (3). A first bevel gear (17) is installed at one end of the rotating rod (11).

2. The downhole pressure testing device according to claim 1, characterized in that: Support plates (9) are welded to both sides of the top surface of the base plate (1). A sliding groove is provided on the side of the two support plates (9) that are close to each other, and a slider is placed in the sliding groove. The outer wall of the slider is fixedly connected to the side walls of the sliding plate (5) respectively, and the vertical section of the sliding groove is T-shaped.

3. The downhole pressure testing device according to claim 1, characterized in that: The worm gear (13) meshes with the worm (15), the gear (12) meshes with the rack (16), and the first bevel gear (17) meshes with the second bevel gear (18).

4. The downhole pressure testing device according to claim 1, characterized in that: The right end of the rotating rod (11) passes through the support plate (9) located on the right side, and a first handwheel (10) is installed at the end of the rotating rod (11) that passes through the support plate (9) on the right side.

5. The downhole pressure testing device according to claim 1, characterized in that: A through hole is provided on one side of the top of the sliding plate (5). One end of the connecting rope on the winch (6) passes through the through hole on the sliding plate (5). A placement groove matching the top of the oil pressure sensor (2) is provided on the bottom surface of the sliding plate (5) at the through hole.

6. The downhole pressure testing device according to claim 1, characterized in that: The support base (3) and the base plate (1) are both provided with a placement groove on one side of the front, and the inner wall of the placement groove is provided with a protective rubber pad. The placement groove can accommodate the oil pressure sensor (2). Four casters (4) are installed on the bottom surface of the base plate (1).

7. The downhole pressure testing device according to claim 1, characterized in that: The support base (3) has a groove on the lower part of one side of the back side. The bottom plate (1) has a threaded hole that penetrates the bottom plate (1) at the top of the groove on the back side of the support base (3). A matching threaded rod (20) is provided in the threaded hole. A second handwheel (19) is installed on the top of the threaded rod (20), and a limit plate (21) is installed at the bottom end of the threaded rod (20).

8. The downhole pressure testing device according to claim 2, characterized in that: A connecting plate (7) is fixedly installed on the upper back of the two support plates (9) on one side close to each other, and a handle (8) is installed on the connecting plate (7).

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