A non-contact depth measuring device for oil and gas wells based on laser measurement

Abstract

The present invention discloses a non-contact depth sounding device based on laser measurement for oil and gas wells. The present invention relates to the depth sounding field for oil and gas wells, including an upper frame and a lower frame. The upper frame and the lower frame are rotatably connected to a horizontal wheel on one side opposite to the other. Both sides of the upper frame and the lower frame are rotatably connected to vertical wheels. Pillars are installed on both sides of the front and back of the upper frame and the lower frame. A laser Doppler speed and length measuring instrument is installed in the inner cavity of the shell. The non-contact depth sounding device based on laser measurement for oil and gas wells described in the present invention is a non-contact measurement when measuring. The material is not measured by a metering wheel, and the material will not slip. The device has a simple structure and high precision. The laser Doppler speed and length measuring instrument can reach 10,000 pulses per meter. It does not contact the material during the whole measurement process, does not wear the material, and does not weaken the strength of the magnetic mark on the material.

Description

Technical Field

[0001] The invention relates to the field of depth measurement for oil and gas wells, and in particular to a non-contact depth measurement device for oil and gas wells based on laser measurement. Background Art

[0002] The oil and gas well depth measuring devices currently in use on the market all adopt contact measurement. The core of these devices is that the Martindike metering wheel drives the photoelectric encoder to rotate, and the depth is calculated by collecting the encoder pulse signal. This metering method has the following problems: the depth measurement accuracy is relatively low; the metering wheel and the cable wear each other, the circumference of the metering wheel becomes smaller, resulting in depth errors; the cable freezes and slips, causing depth errors; cables of different thicknesses have different requirements for metering wheels and clamping wheels, and it is difficult for a Martindike to be compatible with cables of all thicknesses; the metering wheel, guide wheel and cable must be in contact, and even if the metering wheel and the guide wheel are made of non-magnetic materials, it is difficult to achieve true non-magneticity, which affects the durability of the magnetic mark on the cable. At the same time, the two metering wheels of the dual-metering Martindike have different output depths, and the two metering wheels do not rotate completely synchronously. This problem cannot be completely solved by the existing Martindike.

[0003] Therefore, it is necessary to propose a non-contact depth measuring device based on laser measurement for oil and gas wells to solve the above problems. Summary of the invention

[0004] The main purpose of the present invention is to provide a non-contact depth measuring device for oil and gas wells based on laser measurement, which can effectively solve the problems in the background technology.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A non-contact depth sounding device based on laser measurement for oil and gas wells, comprising an upper frame and a lower frame, wherein the upper frame and the lower frame are rotatably connected to a horizontal wheel on one side opposite to the other, and both sides of the upper frame and the lower frame are rotatably connected to vertical wheels, and auxiliary components are symmetrically arranged on the opposite sides of the vertical wheels at both ends, and pillars are installed on both sides of the front and back of the upper frame and the lower frame, and a connecting plate is installed on the top of the pillar, and a shell is installed on the top of the connecting plate, and a laser Doppler speed and length measuring instrument is installed in the inner cavity of the shell;

[0007] A cross arm is installed on the right side of the pillar, a hanging head assembly is movably connected in the inner cavity of the cross arm, a connecting assembly is rotatably connected to the outer wall of the hanging head assembly, and an anti-collision column is arranged on the left side of the connecting assembly;

[0008] A connecting seat is installed on the top of the hanging head assembly, a mounting assembly is installed on the top of the connecting seat, a hanging column is installed in the inner cavity of the mounting assembly, and bonding plates are symmetrically and movably connected on both sides of the hanging column.

[0009] Preferably, the connecting plate is a hollow structure with the top and bottom communicating with the outside, the centers of the laser Doppler speed and length meter, the upper frame and the lower frame are all on the same axis, there are eight horizontal wheels and four vertical wheels.

[0010] Preferably, a contraction groove is opened on the outer wall of the pillar, and a wheel axle is installed in the center of the inner cavity of the horizontal wheel and the vertical wheel. The wheel axles at the four outer horizontal wheels are rotatably connected to the two sides of the upper frame and the lower frame respectively, and the wheel axles at the four inner horizontal wheels are movably connected in the inner cavity of the contraction groove, and a spring is installed on the outer wall of the wheel axle at the inner horizontal wheel.

[0011] Preferably, the tops of the opposite sides of the auxiliary components at both ends are symmetrically provided with adapting grooves, the top and bottom of the inner cavity of the adapting grooves are rotatably connected with rollers, the sizes of the adapting grooves and the vertical wheels are matched, the outer sides of the vertical wheels are movably connected in the inner cavity of the adapting grooves, the vertical wheels are attached to the outer walls of the rollers, and the top and bottom of the wheel axles at the vertical wheels are movably connected in the inner cavities of the upper frame and the lower frame.

[0012] Preferably, movable columns are symmetrically installed at the bottom of opposite sides of the two auxiliary components, and the movable columns are movably connected in the inner cavity of the lower frame. A bidirectional threaded rod is rotatably connected in the inner cavity of the lower frame, and an operating handle is installed in the middle of the outer wall of the bidirectional threaded rod. The movable columns are threadedly connected to the outer wall of the bidirectional threaded rod, and the bottom of the operating handle extends to the bottom of the lower frame.

[0013] Preferably, the left side of the anti-collision column is installed on the right side of the pillar, adjustment grooves are symmetrically provided at both ends of the cross arm, positioning bolts are symmetrically installed at the bottom of both ends of the hanging head assembly, spring washers are symmetrically installed on the opposite sides of the two positioning bolts, the spring washers are fitted on the outer wall of the cross arm, and the opposite sides of the two positioning bolts are symmetrically and movably connected in the inner cavities of the two adjustment grooves.

[0014] Preferably, sliding grooves are symmetrically provided at both ends of the anti-collision column, a movable groove is provided on the right side of the anti-collision column, the connecting component is movably connected in the inner cavity of the anti-collision column through the movable groove, a damping shaft is installed on the left side of the connecting component, and sliders are symmetrically installed at both ends of the damping shaft, and the sliders are movably connected in the inner cavity of the sliding groove.

[0015] Preferably, a hanging groove is opened on the top of the connecting seat, the hanging column is inserted into the inner cavity of the hanging groove, threaded rods are symmetrically installed at both ends of the hanging column, the threaded rods are threadedly connected to the outer wall of the mounting assembly, and a mounting piece is installed on the outer wall of the threaded rod at one end.

[0016] Preferably, the outer wall of the mounting piece is rotatably connected to a rotating handle, a chain belt is installed in the inner cavity of the hanging column, sprockets are meshed at both ends of the inner cavity of the chain belt, the side of the rotating handle is installed on the side of one of the sprockets, and a bidirectional screw rod is installed at the other sprocket.

[0017] Preferably, movable rods are symmetrically installed in the middle of opposite sides of the two bonding plates, the movable rods are movably connected in the inner cavity of the hanging column and installed on the outer wall of the bidirectional screw rod, and the outer wall of the bonding plate is attached to the inner wall of the hanging groove.

[0018] Compared with the prior art, the present invention provides a non-contact depth measuring device for oil and gas wells based on laser measurement, which has the following beneficial effects:

[0019] 1. The oil and gas well non-contact depth sounding device based on laser measurement is a non-contact measurement when measuring. The material is not measured through a metering wheel, so there will be no problem of metering wheel wear. At the same time, the material will not slip during the measurement process, which makes the device have a wide range of uses and is suitable for the measurement of cables, coiled tubing, and drill pipes of various thicknesses. The device has a simple structure and high precision. The laser Doppler speed and length meter used can reach 10,000 pulses per meter. During the measurement, there is no contact with the material, no wear on the material, and the strength of the magnetic mark on the material will not be weakened.

[0020] 2. The oil and gas well is a non-contact depth sounding device based on laser measurement. It adopts a laser Doppler speed and length meter, which uses a phase modulator to achieve frequency shift and cooperates with fast Fourier transform to achieve frequency detection. The differential laser Doppler principle is applied. The light emitted by the laser is evenly divided into two beams and then emitted and converged again on the surface of the object to be measured. The detector of the laser Doppler speed and length meter receives the reflected light. When the lateral velocity of the object to be measured is zero, the frequency of the reflected light is the same as that of the detection light; when the lateral velocity is not zero, the reflected light will have a frequency shift relative to the detection light. The frequency shift is calculated by fast Fourier transform to obtain the depth and speed of the object to be measured.

[0021] 3. The non-contact depth sounding device based on laser measurement of oil and gas wells can guide the measured object through the set transverse wheels and vertical wheels. When the measured object is pulled, it can be measured contactlessly by the laser Doppler speed and length measuring instrument. The set spring can always shrink the two middle wheel shafts to the opposite side, so that it can drive the transverse wheels connected to it to shrink, which can play a certain positioning effect on the measured object when measuring it.

[0022] 4. The non-contact depth sounding device based on laser measurement of oil and gas wells can drive the bidirectional threaded rod to rotate by rotating the operating handle. At this time, the movable column can be threadedly connected with the bidirectional threaded rod, so that it can move back and forth in the inner cavity of the lower frame. At this time, the auxiliary components at both ends can be set on the outer wall of the vertical wheel through the adapter groove, and the roller will fit on the vertical wheel. When the auxiliary components continue to move, the vertical wheels at both ends can be driven to shrink toward the center, so that the vertical wheels can further position the object to be measured, and cooperate with the set cross wheel, so that the object to be measured will not have a large jitter when measuring, so that the accuracy of the measurement data can be effectively improved, and at the same time, the loading range of the object to be measured can be effectively improved, which is more convenient during installation and use. At the same time, the object to be measured can be constrained in the center position of the bottom of the laser Doppler speed and length meter, so that its focal length can always be within the required range.

[0023] 5. The non-contact depth sounding device based on laser measurement of oil and gas wells can move the head assembly left and right in its inner cavity through the set cross arm. When the device needs to be installed, the head assembly can be adjusted laterally according to the installation requirements and the actual situation of the installation position. The adjusted head assembly can be fixed in position through the set positioning bolts and spring washers. At the same time, the connecting assembly can move with the head assembly when it moves, so as to have a certain supporting effect. When the connecting assembly moves, it will drive the slider to move in the inner cavity of the slide groove, which can limit the connecting assembly. At the same time, the head assembly can adjust the angle, and with the set damping shaft, the connecting assembly can also adapt to the angle adjustment of the head assembly.

[0024] 6. The non-contact depth sounding device based on laser measurement for oil and gas wells can be connected as a connecting structure of a lifting equipment through the provided installation assembly. Through the provided lifting groove, the connecting seat can be mounted on the outer wall of the lifting column through the lifting groove, so that the connecting seat can drive the device to adjust the angle. When the device is performing lifting work, the angle of the laser Doppler speed and length meter, the horizontal wheel and the vertical wheel can be adjusted to meet the moving angle of the measured object during measurement, and at the same time, the installation assembly and the lifting equipment can be in a vertical state, and will not tilt due to the angle of the device.

[0025] 7. The non-contact depth sounding device based on laser measurement for oil and gas wells can drive one of the sprockets to rotate by rotating the rotating handle. At this time, the other sprocket can be driven to rotate through the chain belt, so that the bidirectional screw rod can be driven to rotate in the inner cavity of the lifting column. At this time, the two movable rods can be threadedly connected with it, so as to drive the two fitting plates to move to the opposite side, so that they can fit tightly in the inner cavity of the lifting groove, which can improve its stability and avoid shaking due to the gap after it is connected to the lifting structure, thereby further improving the accuracy of the measurement data. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 The present invention Figure 1 The enlarged view of point A in the middle;

[0028] Figure 3 is a schematic diagram of the structure of the auxiliary components of the present invention;

[0029] Figure 4 It is a structural schematic diagram of the hanging head assembly of the present invention;

[0030] Figure 5 It is a schematic structural diagram of the anti-collision column of the present invention;

[0031] Figure 6 It is a schematic diagram of the structure of the installation assembly of the present invention;

[0032] Figure 7 It is a schematic structural diagram of the laminated board of the present invention.

[0033] In the figure: 1, housing; 2, laser Doppler speed and length measuring instrument; 4, connecting plate; 5, pillar; 6, cross arm; 7, adjustment slot; 8, positioning bolt; 9, spring washer; 10, hanging head assembly; 11, connecting seat; 12, hanging slot; 13, anti-collision column; 14, sliding slot; 15, movable slot; 16, connecting assembly; 17, damping shaft; 18, sliding block; 19, installation assembly; 20, hanging column; 21, Mounting parts; 23. Turning handle; 24. Chain belt; 25. Sprocket; 26. Threaded rod; 27. Bidirectional screw rod; 28. Movable rod; 29. ​​Laminating plate; 30. Upper frame; 31. Horizontal wheel; 32. Lower frame; 33. Vertical wheel; 34. Retraction groove; 35. Axle; 36. Spring; 37. Auxiliary component; 38. Adapter groove; 39. Roller; 40. Movable column; 41. Bidirectional threaded rod; 42. Operating handle. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0035] Embodiment 1:

[0036] like Figure 1-Figure 3 As shown, a non-contact depth sounding device based on laser measurement for oil and gas wells comprises an upper frame 30 and a lower frame 32, wherein a transverse wheel 31 is rotatably connected to one side opposite to the upper frame 30 and the lower frame 32, and vertical wheels 33 are rotatably connected to both sides of both ends of the upper frame 30 and the lower frame 32, and auxiliary components 37 are symmetrically arranged on the opposite sides of the vertical wheels 33 at both ends, and pillars 5 are installed on both sides of the front and back of the upper frame 30 and the lower frame 32, and a connecting plate 4 is installed on the top of the pillar 5, and a shell 1 is installed on the top of the connecting plate 4, and a laser Doppler speed and length measuring instrument 2 is installed in the inner cavity of the shell 1, and the connecting plate 4 is a cavity structure with the top and bottom communicating with the outside, and the centers of the laser Doppler speed and length measuring instrument 2, the upper frame 30 and the lower frame 32 are all on the same axis, there are eight transverse wheels 31, and four vertical wheels 33, and a contraction groove 34 is opened on the outer wall of the pillar 5, and a wheel axle 35 is installed in the middle of the inner cavity of the transverse wheel 31 and the vertical wheel 33, and the wheel axles 35 at the four outer transverse wheels 31 are arranged on the outer wall of the pillar 5. 5 are rotatably connected to both sides of the upper frame 30 and the lower frame 32 respectively, the wheel axles 35 at the four inner transverse wheels 31 are movably connected in the inner cavity of the contraction groove 34, the outer wall of the wheel axle 35 at the inner transverse wheel 31 is installed with a spring 36, the top of the opposite side of the auxiliary components 37 at both ends is symmetrically provided with an adapting groove 38, the top and bottom of the inner cavity of the adapting groove 38 are rotatably connected with rollers 39, the size of the adapting groove 38 and the vertical wheel 33 are adapted, the outer side of the vertical wheel 33 is movably connected in the inner cavity of the adapting groove 38, the vertical wheel 33 fits on the outer wall of the roller 39, the bottom of the opposite side of the two auxiliary components 37 is symmetrically installed with movable columns 40, the movable columns 40 are movably connected in the inner cavity of the lower frame 32, the inner cavity of the lower frame 32 is rotatably connected with a bidirectional threaded rod 41, the center of the outer wall of the bidirectional threaded rod 41 is installed with an operating handle 42, the movable column 40 is threadedly connected to the outer wall of the bidirectional threaded rod 41, and the bottom of the operating handle 42 extends to the bottom of the lower frame 32;

[0037] The laser Doppler speed and length measuring instrument 2 uses a sensor model MS-D-KD300 from Beijing Weili Optoelectronic Technology Co., Ltd.;

[0038] This device is a non-contact measurement when measuring. It does not measure the material through the metering wheel, so there will be no wear of the metering wheel. At the same time, the material will not slip during the measurement process, so the device has a wide range of applications and is suitable for measuring cables, coiled tubing, and drill pipes of various thicknesses. The device has a simple structure and high precision. The laser Doppler speed and length measuring instrument 2 can reach 10,000 pulses per meter. It does not contact the material during the measurement process, does not wear the material, and does not weaken the strength of the magnetic mark on the material.

[0039] The laser Doppler speed and length measuring instrument 2 adopts a phase modulator to realize frequency shift and cooperates with fast Fourier transform to realize frequency detection. The differential laser Doppler principle is applied. The light emitted by the laser is evenly divided into two beams and then emitted, and converged again on the surface of the object to be measured. The detector of the laser Doppler speed and length measuring instrument 2 receives the reflected light. When the lateral speed of the object to be measured is zero, the reflected light has the same frequency as the detection light; when the lateral speed is not zero, the reflected light will have a frequency shift relative to the detection light. The frequency shift size is solved by fast Fourier transform, so as to obtain the running depth and speed of the object to be measured.

[0040] The horizontal wheel 31 and the vertical wheel 33 can guide the object to be measured. When the object to be measured is pulled, the laser Doppler speed and length measuring instrument 2 can perform non-contact measurement on it. The spring 36 can always shrink the two wheel shafts 35 in the middle to the opposite side, so that it can drive the horizontal wheel 31 connected to it to shrink, and when measuring the object to be measured, it can play a certain positioning effect on it.

[0041] By rotating the operating handle 42, the bidirectional threaded rod 41 can be driven to rotate. At this time, the movable column 40 can be threadedly connected with the bidirectional threaded rod 41, so that it can move back and forth in the inner cavity of the lower frame 32. At this time, the auxiliary components 37 at both ends can be sleeved on the outer wall of the vertical wheel 33 through the adapter groove 38, and the roller 39 will fit on the vertical wheel 33. When the auxiliary component 37 continues to move, it can drive the vertical wheels 33 at both ends to shrink toward the center, so that the vertical wheels 33 can further position the object to be measured, and cooperate with the set horizontal wheel 31, so that the object to be measured will not have a large jitter when measuring, which can effectively improve the accuracy of the measurement data, and at the same time can effectively improve the loading range of the object to be measured, which is more convenient during installation and use, and at the same time can constrain the object to be measured in the center position at the bottom of the laser Doppler speed and length meter 2, so that its focal length can always be within the required range.

[0042] Embodiment 2:

[0043] like Figure 1 , Figure 4 , Figure 5As shown, a non-contact depth sounding device for oil and gas wells based on laser measurement, a cross arm 6 is installed on the right side of a pillar 5, a hanging head assembly 10 is movably connected in the inner cavity of the cross arm 6, a connecting assembly 16 is rotatably connected to the outer wall of the hanging head assembly 10, an anti-collision column 13 is arranged on the left side of the connecting assembly 16, and the left side of the anti-collision column 13 is installed on the right side of the pillar 5, adjustment slots 7 are symmetrically opened at both ends of the cross arm 6, positioning bolts 8 are symmetrically installed at the bottom of both ends of the hanging head assembly 10, and elastic springs are symmetrically installed on the opposite sides of the two positioning bolts 8. Spring washer 9, spring washer 9 is attached to the outer wall of cross arm 6, opposite sides of two positioning bolts 8 are symmetrically and movably connected in the inner cavity of two adjustment grooves 7, two ends of anti-collision column 13 are symmetrically provided with slide grooves 14, and the right side of anti-collision column 13 is provided with a movable groove 15, and connecting component 16 is movably connected in the inner cavity of anti-collision column 13 through the movable groove 15, and a damping shaft 17 is installed on the left side of the connecting component 16, and sliders 18 are symmetrically installed at both ends of the damping shaft 17, and the slider 18 is movably connected in the inner cavity of the slide groove 14;

[0044] By means of the arranged cross arm 6, the hanging head assembly 10 can move left and right in its inner cavity. When the device needs to be installed, the hanging head assembly 10 can be adjusted laterally according to the installation requirements and the actual conditions of the installation position. By means of the arranged positioning bolts 8 and spring washers 9, the adjusted hanging head assembly 10 can be fixed in position. At the same time, by means of the arranged connecting assembly 16, when the hanging head assembly 10 moves, it will also move with it, thereby having a certain supporting effect. When the connecting assembly 16 moves, it will drive the slider 18 to move in the inner cavity of the slide groove 14, thereby having a limiting effect on the connecting assembly 16. At the same time, the hanging head assembly 10 can be adjusted in angle, and with the arranged damping shaft 17, the connecting assembly 16 can also adapt to the angle adjustment of the hanging head assembly 10.

[0045] Embodiment three:

[0046] like Figure 1 , Figure 6 , Figure 7As shown, a non-contact depth sounding device for oil and gas wells based on laser measurement is provided. A connecting seat 11 is installed on the top of the hanging head assembly 10. A mounting assembly 19 is installed on the top of the connecting seat 11. A hanging column 20 is installed in the inner cavity of the mounting assembly 19. The two sides of the hanging column 20 are symmetrically and movably connected with a fitting plate 29. A hanging groove 12 is provided on the top of the connecting seat 11. The hanging column 20 is inserted into the inner cavity of the hanging groove 12. Threaded rods 26 are symmetrically installed at both ends of the hanging column 20. The threaded rod 26 is threadedly connected to the outer wall of the mounting assembly 19. The outer wall of the threaded rod 26 at one end is A mounting member 21 is installed on the wall, and a rotating handle 23 is rotatably connected to the outer wall of the mounting member 21. A chain belt 24 is installed in the inner cavity of the hanging column 20, and sprockets 25 are meshed at both ends of the inner cavity of the chain belt 24. The side of the rotating handle 23 is installed on the side of one of the sprockets 25, and a bidirectional screw rod 27 is installed at the other sprocket 25. A movable rod 28 is symmetrically installed in the middle of the opposite side of the two bonding plates 29. The movable rod 28 is movably connected in the inner cavity of the hanging column 20 and installed on the outer wall of the bidirectional screw rod 27. The outer wall of the bonding plate 29 is bonded to the inner wall of the hanging groove 12.

[0047] The installation assembly 19 can be used as a connection structure for the lifting equipment. The lifting groove 12 can be used to allow the connection seat 11 to be sleeved on the outer wall of the lifting column 20 through the lifting groove 12, so that the connection seat 11 can drive the device to adjust the angle, so that when the device is lifting, the angles of the laser Doppler speed and length measuring instrument 2, the horizontal wheel 31 and the vertical wheel 33 can be adjusted, so as to meet the moving angle of the measured object during measurement, and at the same time, the installation assembly 19 and the lifting equipment can be in a vertical state, and the device will not be tilted due to the angle.

[0048] By rotating the rotating handle 23, one of the sprockets 25 can be driven to rotate, and at this time, the other sprocket 25 can be driven to rotate through the chain belt 24, so that the bidirectional screw rod 27 can be driven to rotate in the inner cavity of the hanging column 20. At this time, the two movable rods 28 can be threadedly connected with it, so as to drive the two fitting plates 29 to move to the opposite side, so that they can fit tightly in the inner cavity of the hanging groove 12, which can improve its stability and avoid shaking due to the gap after it is connected to the hanging structure, so as to further improve the accuracy of the measurement data.

[0049] It should be noted that the present invention is a non-contact depth sounding device based on laser measurement for oil and gas wells. When in use, the angles of the laser Doppler speed and length measuring instrument 2, the horizontal wheel 31 and the vertical wheel 33 are adjusted according to the moving position of the measured object, the housing 1 is moved, the positioning bolt 8 is loosened, and the horizontal arm 6 is moved, so that the hanging head assembly 10 can move left and right in the inner cavity of the horizontal arm 6, so as to adjust the position of the hanging head assembly 10. When the hanging head assembly 10 moves, it will drive the connecting assembly 16 to move in the inner cavity of the anti-collision column 13. After the connecting assembly 16 moves, it will drive the slider 18 to slide in the inner cavity of the slide groove 14 through the damping shaft 17, so as to adapt to the movement of the hanging head assembly 10, rotate the horizontal arm 6, and adjust the angles of the upper frame 30 and the lower frame 32. During the adjustment, the connecting assembly 16 will rotate accordingly through the damping shaft 17. After adjusting to a suitable angle, reinstall the positioning bolt 8 and the spring gasket 9 to limit the position of the hanging head assembly 10.

[0050] After the hanging head assembly 10 rotates, it will drive the installation assembly 19 to rotate, move the installation assembly 19 to a vertical state, rotate the handle 23, and drive a sprocket 25 to rotate. At this time, the other sprocket 25 can be driven to rotate by engaging with the chain belt 24, thereby driving the bidirectional screw rod 27 to rotate. At this time, the two movable rods 28 can be threadedly connected with the bidirectional screw rod 27, so that the two fitting plates 29 can move to the opposite side, so that the fitting plates 29 can be tightly fitted on both sides of the inner cavity of the hanging groove 12, thereby limiting the position of the installation assembly 19, and then connecting it to the hanging equipment. At this time, the upper frame 30 and the lower frame 32 are in an inclined state, and the installation assembly 19 and the hanging equipment are in a vertical state;

[0051] Insert the object to be measured to the opposite side of the upper frame 30 and the lower frame 32 so that it is located at the horizontal wheel 31 and the vertical wheel 33, connect the other end of the object to be measured to the winch, rotate the operating handle 42, drive the two-way threaded rod 41 to rotate, so that the movable column 40 can be threadedly connected with the two-way threaded rod 41, and the auxiliary components 37 at both ends can move to the opposite side until the roller 39 fits the outer wall of the vertical wheel 33. When the auxiliary component 37 continues to move, it can drive the vertical wheel 33 to move inward until the vertical wheel 33 fits the outer wall of the object to be measured. At the same time, the spring 36 will shrink the wheel shaft 35 connected thereto to the opposite side, so that the inner horizontal wheel 31 can fit the top and bottom of the object to be measured;

[0052] The winch is started to drive the object to be measured to move between the horizontal wheel 31 and the vertical wheel 33. At this time, the laser Doppler speed and length measuring instrument 2 can perform non-contact measurement on the object to be measured.

[0053] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A non-contact depth measuring device for oil and gas wells based on laser measurement, comprising an upper frame (30) and a lower frame (32), characterized in that: The upper frame (30) and the lower frame (32) have a side opposite to each other that is rotatably connected to a horizontal wheel (31), both sides of both ends of the upper frame (30) and the lower frame (32) are rotatably connected to vertical wheels (33), and auxiliary components (37) are symmetrically arranged on the opposite sides of the vertical wheels (33) at both ends, and both sides of the upper frame (30) and the lower frame (32) are provided with pillars (5), and a connecting plate (4) is installed on the top of the pillar (5), and a shell (1) is installed on the top of the connecting plate (4), and a laser Doppler speed and length measuring instrument (2) is installed in the inner cavity of the shell (1); A cross arm (6) is installed on the right side of the pillar (5); a hanging head assembly (10) is movably connected in the inner cavity of the cross arm (6); a connecting assembly (16) is rotatably connected to the outer wall of the hanging head assembly (10); and an anti-collision column (13) is arranged on the left side of the connecting assembly (16); A connecting seat (11) is installed on the top of the hanging head assembly (10), a mounting assembly (19) is installed on the top of the connecting seat (11), a hanging column (20) is installed in the inner cavity of the mounting assembly (19), and two sides of the hanging column (20) are symmetrically and movably connected with a bonding plate (29); The outer wall of the support column (5) is provided with a contraction groove (34), and a wheel axle (35) is installed in the middle of the inner cavity of the horizontal wheel (31) and the vertical wheel (33), and the wheel axles (35) at the four outer horizontal wheels (31) are rotatably connected to the two sides of the upper frame (30) and the lower frame (32), respectively, and the wheel axles (35) at the four inner horizontal wheels (31) are movably connected in the inner cavity of the contraction groove (34), and a spring (36) is installed on the outer wall of the wheel axle (35) at the inner horizontal wheel (31); The auxiliary components (37) at both ends are symmetrically provided with adapting grooves (38) at the tops of opposite sides thereof, the tops and bottoms of the inner cavities of the adapting grooves (38) are rotatably connected with rollers (39), the sizes of the adapting grooves (38) and the vertical wheels (33) are matched, the outer sides of the vertical wheels (33) are movably connected in the inner cavities of the adapting grooves (38), the vertical wheels (33) are fitted on the outer walls of the rollers (39), and the tops and bottoms of the wheel shafts (35) at the vertical wheels (33) are movably connected in the inner cavities of the upper frame (30) and the lower frame (32); Movable columns (40) are symmetrically mounted at the bottom of opposite sides of the two auxiliary components (37); the movable columns (40) are movably connected in the inner cavity of the lower frame (32); a bidirectional threaded rod (41) is rotatably connected in the inner cavity of the lower frame (32); an operating handle (42) is mounted in the middle of the outer wall of the bidirectional threaded rod (41); the movable columns (40) are threadedly connected to the outer wall of the bidirectional threaded rod (41); and the bottom of the operating handle (42) extends to the bottom of the lower frame (32).

2. The non-contact depth measuring device based on laser measurement for oil and gas wells according to claim 1, characterized in that: The connecting plate (4) is a hollow structure with the top and bottom communicating with the outside world. The centers of the laser Doppler speed and length measuring instrument (2), the upper frame (30) and the lower frame (32) are all located on the same axis. There are eight horizontal wheels (31) and four vertical wheels (33).

3. The non-contact depth measuring device based on laser measurement for oil and gas wells according to claim 1, characterized in that: The left side of the anti-collision column (13) is installed on the right side of the pillar (5), and adjustment grooves (7) are symmetrically opened at both ends of the cross arm (6). Positioning bolts (8) are symmetrically installed at the bottom of both ends of the hanging head assembly (10), and spring washers (9) are symmetrically installed on the opposite sides of the two positioning bolts (8). The spring washers (9) are fitted on the outer wall of the cross arm (6), and the opposite sides of the two positioning bolts (8) are symmetrically and movably connected in the inner cavities of the two adjustment grooves (7).

4. The non-contact depth measuring device based on laser measurement for oil and gas wells according to claim 1, characterized in that: Slide grooves (14) are symmetrically provided at both ends of the anti-collision column (13), a movable groove (15) is provided on the right side of the anti-collision column (13), the connecting component (16) is movably connected to the inner cavity of the anti-collision column (13) through the movable groove (15), a damping shaft (17) is installed on the left side of the connecting component (16), and sliders (18) are symmetrically installed at both ends of the damping shaft (17), and the sliders (18) are movably connected to the inner cavity of the slide groove (14).

5. The non-contact depth measuring device based on laser measurement for oil and gas wells according to claim 1, characterized in that: A hanging groove (12) is provided on the top of the connecting seat (11), and the hanging column (20) is inserted into the inner cavity of the hanging groove (12). Threaded rods (26) are symmetrically installed at both ends of the hanging column (20), and the threaded rods (26) are threadedly connected to the outer wall of the mounting assembly (19), and a mounting piece (21) is installed on the outer wall of the threaded rod (26) at one end.

6. The non-contact depth measuring device based on laser measurement for oil and gas wells according to claim 5, characterized in that: The outer wall of the mounting member (21) is rotatably connected to a rotating handle (23), a chain belt (24) is installed in the inner cavity of the hanging column (20), sprocket wheels (25) are meshed at both ends of the inner cavity of the chain belt (24), the side of the rotating handle (23) is installed on the side of one of the sprocket wheels (25), and a bidirectional screw rod (27) is installed at the other sprocket wheel (25).

7. The non-contact depth measuring device based on laser measurement for oil and gas wells according to claim 5, characterized in that: A movable rod (28) is symmetrically installed in the middle of the opposite side of the two bonding plates (29). The movable rod (28) is movably connected in the inner cavity of the hanging column (20) and installed on the outer wall of the bidirectional screw rod (27). The outer wall of the bonding plate (29) is attached to the inner wall of the hanging groove (12).

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