Diameter-variable drilling television device

Abstract

The utility model discloses a variable-diameter drilling television device, and belongs to the technical field of engineering detection. Comprising a central connecting rod; the borehole television probe is fixed at the bottom of the central connecting rod; the variable-diameter connecting devices are arranged on the outer side of the center connecting rod and used for abutting against the well wall to support the center connecting rod; the variable-diameter connecting device comprises a plurality of metal sleeves with different inner diameters, and the adjacent metal sleeves are connected in a sleeved mode and fixed through connecting pieces. According to the utility model, the adjacent metal sleeves can slide relative to each other, after the diameter of a shaft is determined, the length of the variable-diameter connecting device is adjusted by adjusting the sliding metal sleeves, and then the adjacent metal sleeves are fixed through the connecting pieces to abut against the shaft wall, so that the drilling television probe can adapt to shafts with different hole diameters; therefore, cost is effectively saved, and time and labor are saved.

Description

Technical Field

[0001] This utility model relates to a variable diameter borehole television device, belonging to the field of engineering testing technology. Background Technology

[0002] While traditional drilling and coring techniques can obtain rock core samples from underground strata for further experimental analysis, this process is time-consuming and labor-intensive. Compared to core samples, borehole television imaging (BMI) provides richer and more precise geological information, and has gradually become one of the main technical means for quality inspection in certain engineering projects.

[0003] However, existing borehole television equipment often cannot achieve the function of changing the diameter. For vertical shafts with different diameters, a separate set of equipment needs to be purchased, which is time-consuming, labor-intensive, and wasteful of resources. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a variable diameter drilling television device, which solves the problem that existing drilling television devices often cannot achieve the function of variable diameter, and for vertical shafts with different diameters, a separate device needs to be purchased, which is time-consuming, labor-intensive and wasteful of resources.

[0005] The technical problem to be solved by this utility model is achieved by the following technical solution: a variable diameter drilling television device, comprising:

[0006] Central connecting rod;

[0007] The drilling television probe is fixed at the bottom of the central connecting rod;

[0008] Several variable diameter connecting devices are provided on the outside of the central connecting rod to abut against the well wall and support the central connecting rod.

[0009] The variable diameter connecting device includes several metal sleeves with different inner diameters. Adjacent metal sleeves are sleeved together and fixed by connecting parts. Specifically, there are three metal sleeves, with one metal sleeve near the central connecting rod being fixed. The lengths are 1.4m, 1.4m and 0.7m respectively.

[0010] By adopting the above technical solution, adjacent metal sleeves can slide relative to each other. After determining the well diameter, the length of the variable diameter connecting device can be adjusted by adjusting the sliding metal sleeve. Then, the adjacent metal sleeves can be fixed to the well wall by the connecting parts. This allows the borehole television probe to be adapted to vertical wells with different diameters without the need to purchase a separate device, thus effectively saving costs, time and effort.

[0011] The present invention is further configured such that: the connecting member is a fastening bolt, and several metal sleeves are provided with several bolt holes along the axial direction that are adapted to the fastening bolt, wherein the bolt hole spacing is 0.2m, and the diameter range of the guide hole is approximately 1.4m to 3.5m.

[0012] By adopting the above technical solution, the metal sleeve is fixed by fastening bolts, preventing the metal sleeve from sliding, thereby enabling the variable diameter connection device to stably abut against the well wall.

[0013] This utility model is further configured such that: a universal wheel is provided at the end of the variable diameter connecting device away from the central connecting rod, and an elastic element is also provided between the universal wheel and the end of the variable diameter connecting device. Specifically: a connecting seat is provided at one end of the variable diameter connecting device, the universal wheel is rotatably connected to the connecting seat, an elastic element is provided between the universal wheel and the connecting seat, a rotating shaft is provided on both sides of the universal wheel, and grooves for sliding of the rotating shafts are provided on both sides of the connecting seat along the axial direction of the metal sleeve.

[0014] By adopting the above technical solution, the caster wheel can abut against the well wall. When the device slides down to the uneven well wall surface, the caster wheel is forced back, which drives the rotating shaft to slide in the groove and causes the caster wheel to squeeze the compression spring. After the compression spring is compressed, it generates elastic force, which can drive the caster wheel to return to its original position. This allows the device to achieve a small degree of extension and retraction to adapt to the unevenness of the well wall, thus adapting to vertical wells with complex wall structures.

[0015] The present invention is further configured such that: a number of lighting lamps are evenly distributed around the borehole television probe, and a power supply is provided on the central connecting rod, which is used to supply power to the lighting lamps and the borehole television probe, and the included angle between adjacent lighting lamps is 60°.

[0016] By adopting the above technical solution, the drilling television probe can be illuminated in the dark environment of the well by the lighting lamp, so that the situation inside the dark vertical shaft can be detected more clearly, ensuring the quality of the imaging.

[0017] The beneficial effects of this utility model are: it enables adjacent metal sleeves to slide relative to each other. After determining the diameter of the well shaft, the length of the variable diameter connecting device can be adjusted by adjusting the sliding metal sleeve. Then, the adjacent metal sleeves can be fixed to the well wall by the connecting piece. This allows the borehole television probe to be adapted to vertical wells with different diameters without the need to purchase a separate device, thereby effectively saving costs, time and effort. Attached Figure Description

[0018] Figure 1 This is a construction diagram of the present invention;

[0019] Figure 2 This is a front view of the present invention;

[0020] Figure 3This is a top view of the present invention;

[0021] Figure 4 This is a schematic diagram of the universal wheel in this utility model. Figure 1 ;

[0022] Figure 5 This is a schematic diagram of the universal wheel in this utility model. Figure 2 .

[0023] In the diagram: 1. Drilling television probe; 2. Lighting lamp; 3. Central connecting rod; 4. Power supply; 5. Variable diameter connecting device; 6. Metal sleeve; 7. Bolt hole; 8. Caster wheel; 801. Elastic element; 802. Connecting seat; 803. Groove; 804. Shaft; 9. Fixed pulley; 10. Winch; 11. PC computer; 12. Connecting plate. Detailed Implementation

[0024] To facilitate a clear understanding of the technical means, creative features, objectives, and effects of this utility model, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0025] like Figure 1 and Figure 2 As shown, a variable-diameter borehole television device includes:

[0026] Central connecting rod 3;

[0027] Drilling television probe 1 is fixed to the bottom of the central connecting rod 3;

[0028] A variable diameter connecting device 5, in several quantities and located on the outside of the central connecting rod 3, is used to abut against the well wall to support the central connecting rod 3;

[0029] The variable diameter connecting device 5 includes several metal sleeves 6 with different inner diameters. Adjacent metal sleeves 6 are sleeved together and fixed by connecting parts. Specifically, there are three metal sleeves 6. The metal sleeve 6 closest to the central connecting rod 3 is fixedly installed, with lengths of 1.4m, 1.4m and 0.7m respectively.

[0030] Adjacent metal sleeves 6 are interlocked, allowing them to slide relative to each other. After determining the well diameter, the length of the variable diameter connecting device 5 is adjusted by adjusting the sliding metal sleeves 6. Then, the adjacent metal sleeves 6 are fixed against the well wall by the connecting parts. This allows the borehole television probe 1 to be adapted to vertical wells with different diameters without the need to purchase a separate device, thus effectively saving costs, time, and effort.

[0031] like Figure 2 and Figure 3As shown, the connecting component is a fastening bolt (not shown in the figure). Several metal sleeves 6 are provided with bolt holes 7 along the axial direction to match the fastening bolts. The bolt holes 7 are spaced 0.2m apart, which can accommodate a guide tunnel diameter range of approximately 1.4m to 3.5m. The metal sleeves 6 are fixed by the fastening bolts, preventing them from sliding, thus allowing the variable diameter connecting device 5 to stably abut against the well wall.

[0032] like Figure 4 and Figure 5 As shown, a caster wheel 8 is provided at the end of the variable diameter connecting device 5 away from the central connecting rod 3, and an elastic element 801 is also provided between the caster wheel 8 and the end of the variable diameter connecting device 5. Specifically, a connecting seat 802 is provided at one end of the variable diameter connecting device 5, and the caster wheel 8 is rotatably connected to the connecting seat 802. An elastic element 801 is provided between the caster wheel 8 and the connecting seat 802. In this embodiment, the elastic element 801 is a compression spring. A rotating shaft 804 is provided on both sides of the caster wheel 8, and a groove 803 for sliding of the rotating shaft 804 is provided on both sides of the connecting seat 802 along the axial direction of the metal sleeve 6. The groove 803 limits the rotation of the rotating shaft 804, so that the caster wheel 8 can only slide along the length direction of the groove 803.

[0033] With the above settings, the caster wheel 8 can abut against the well wall. When the device slides down to the uneven well wall, the caster wheel 8 is forced back, which drives the rotating shaft 804 to slide in the groove 803 and causes the caster wheel 8 to squeeze the compression spring. After the compression spring is compressed, it generates elastic force, which can drive the caster wheel 8 to return to its original position. This allows the device to achieve a small degree of extension and retraction to adapt to the unevenness of the well wall, thus adapting to vertical wells with complex wall structures.

[0034] like Figure 2 As shown, the variable diameter connecting device 5 has several rows, and each adjacent row of variable diameter connecting devices 5 is connected by a connecting plate 12. The casters 8 are mounted on the connecting plate 12. The connecting plate 12 increases the structural strength between each row of variable diameter connecting devices 5, making it less prone to tilting when the variable diameter connecting devices 5 move down inside the well wall, thus making the structure of this device more robust.

[0035] like Figure 2 and Figure 3 As shown, several lighting lamps 2 are evenly distributed around the borehole television probe 1, and a power supply 4 is provided on the central connecting rod 3. The power supply 4 is used to supply power to the lighting lamps 2 and the borehole television probe 1. The included angle between adjacent lighting lamps 2 is 60°.

[0036] It should be noted that in this embodiment, the power source 4 is one of a solar cell, a lead-acid battery, or a lithium-ion battery. When the power source 4 is a solar cell, it can be placed in the sunlight to charge before use. When the power source 4 is a lead-acid battery or a lithium-ion battery, it can be charged before use. In addition, the power source 4 can also be directly connected to an external source to charge the lighting lamp 2 and the probe at the same time.

[0037] By illuminating the dark environment of the well with the lighting lamp 2, the borehole television probe 1 can more clearly detect the situation inside the dark vertical shaft, ensuring the quality of the image.

[0038] like Figure 1 As shown, a method of using a variable-diameter borehole television device includes the following steps:

[0039] S1: Take appropriate process operations to clean the wellbore, insert the cleaning string into the well wall and rinse the well wall with clean water until the wellbore environment meets the light transmission conditions for visualization imaging.

[0040] S2: After the well wall cleaning is completed, check whether the borehole TV and PC 11 are working properly. Under the premise of ensuring that the equipment is working properly, connect the borehole TV and the winch 10 control system for power-on test. Under the premise of smooth and clear video transmission, zero error rate and no jump, achieve high-speed transmission as much as possible to ensure stable logging.

[0041] S3: After the equipment is debugged, use bolts to fix the winch 10 to the ground, suspend the fixed pulley 9 directly above the wellbore, and slowly lower it until the front end of the instrument is horizontal with the wellhead, and then perform depth zeroing.

[0042] S4: After determining the diameter of the test guide hole, the diameter is changed by adjusting the extension and retraction of three metal sleeves 6 with different inner diameters. The lengths of the three metal sleeves 6 are 1.4m, 1.4m and 0.7m respectively, and the bolt hole 7 on the metal sleeves 6 is spaced 0.2m apart. The diameter range that can be adapted to the guide hole is approximately 1.4m to 3.5m.

[0043] S5: The metal sleeve 6 and the central connecting rod 3 are both made of stainless steel. The included angle between adjacent metal sleeves 6 is 120°. After aligning the bolt holes 7 on the three metal sleeves 6 with each other, the three metal sleeves 6 are connected by the threaded fastening bolts to complete the drilling and television diameter change process.

[0044] S6: After connecting the end of the borehole TV to the winch 10 wire rope, slowly lower it into the well through the fixed pulley 9 and find a visual reference point at an appropriate position. Adjust the brightness of the lights and the focus of the camera according to the smoothness of the video and the image quality displayed on the PC 11. The lighting lights 2 are distributed around the borehole TV probe 1, and the included angle between the lighting lights 2 is 60°.

[0045] S7: The variable diameter connecting device 5 has four sets of retractable casters 8 on its outer side. The casters 8 can rotate in all directions to adapt to inclined shafts and vertical shafts with different inclination angles. A spring is connected to the rear of the casters 8. The extension and retraction of the spring adapts to the uneven tunnel walls. At the same time, the casters 8 are fixed in the groove 803 when they extend and retract, ensuring that the casters 8 can only move in a straight line.

[0046] S8: After inspecting all suspicious points and sections, hoist the instruments out of the well at a speed of 15 meters per minute, then turn off the power, organize the measuring equipment, save the video data, complete the wellhead work, and end the logging operation.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of this utility model. All such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A variable diameter borehole television apparatus, characterized by, The utility model relates to a drilling television probe, which comprises a central connecting rod (3), a drilling television probe (1) arranged at the bottom of the central connecting rod (3), and a plurality of variable-diameter connecting devices (5) arranged outside the central connecting rod (3) and used for abutting against the well wall to support the central connecting rod (3). The variable-diameter connecting device (5) comprises a plurality of metal sleeves (6) with different inner diameters, and the adjacent metal sleeves (6) are sleeved and fixed through connecting pieces. The connecting pieces are fastening bolts, and a plurality of bolt holes (7) adapted to the fastening bolts are formed on the metal sleeves (6) in the axial direction. The variable-diameter connecting device (5) is provided with universal wheels (8) at the end away from the central connecting rod (3). The universal wheels (8) are further provided with elastic members (801) between the end of the variable-diameter connecting device (5) and the universal wheels (8).

2. A borehole televiewer apparatus of variable diameter according to claim 1, wherein: The variable-diameter connecting device (5) is provided with connecting seats (802) for accommodating the elastic members (801) at one end, and the universal wheels (8) are provided with rotating shafts (804) on both sides.

3. A variable diameter bore-scopic device according to claim 1, wherein: Grooves (803) for the sliding of the rotating shafts (804) are formed on both sides of the connecting seats (802) in the axial direction of the metal sleeves (6).

4. A variable diameter bore-scopic device according to claim 3, wherein: The drilling television probe (1) is provided with a plurality of illuminating lamps (2) outside, and the central connecting rod (3) is provided with a power supply (4) for supplying power to the illuminating lamps (2) and the drilling television probe (1).

5. A variable diameter bore-scopic device according to claim 4, wherein: The illuminating lamps (2) are distributed at equal intervals around the drilling television probe (1), and the included angle between adjacent illuminating lamps (2) is 60°.

6. A variable diameter bore-scopic device according to claim 1, wherein: ​ 7. A variable diameter bore-scopic device according to claim 6, wherein: ​

Images