Accurate lowering and measuring device for drilling installation of sensing optical cable

Abstract

The utility model relates to a sensing optical cable drilling installation accurate lowering and measuring device. The sensing optical cable drilling installation accurate lowering and measuring device comprises a winch, a cable arrangement device arranged on the winch, a guide rail and a cable laying device, a cable reel is arranged on the winch, and the cable reel is used for paying off under the action of a first driving mechanism; the cable arranging device comprises a first guide wheel and a second guide wheel, a cable bypasses the first guide wheel and the second guide wheel, and a tension sensor is arranged between the first guide wheel and the second guide wheel; the guide rail is annular, the cable laying device can slide along the guide rail under the action of the guide mechanism, the cable laying device comprises a winding wheel and a third guide wheel, a cable winds around the upper portion of the third guide wheel and then droops into a borehole, the winding wheel is located on the upstream of the third guide wheel, the cable winds around the winding wheel, and a rotation counter is arranged at the position of the winding wheel. The device can synchronously and accurately measure lowering displacement and stress, realizes smooth lowering and accurate positioning of multiple cables in the sensing optical cable installation process, improves the working efficiency, and effectively improves the effectiveness and controllability of the logging technology.

Description

Technical Field

[0001] This utility model relates to the field of sensor optical cable installation technology, specifically to a device for precise lowering and measuring sensor optical cable drilling and installation. Background Technology

[0002] During geological exploration, borehole surveying acquires underground geological parameters, identifies lithology, and assesses reservoir properties, providing crucial information for geological engineering, including stratigraphic analysis, resource exploration and development, and engineering decision-making. To accurately understand stratigraphic lithology and deep-ground rock and soil deformation, various related testing devices need to be lowered to designated locations in the well. Traditional equipment has several shortcomings in measurement operations: 1. Traditional winch depth measurement systems have limitations in control accuracy, leading to measurement depth errors potentially reaching several meters or more; 2. Traditional tension measurement is inaccurate, failing to accurately measure the true tension on cables and optical fibers; 3. Traditional measuring devices cannot adapt to inclined wellbores, causing cable wear. For example, in rock deformation exploration, only by accurately determining the formation resistivity can the degree of rock deformation be better assessed and corresponding early warning measures taken. Factors such as the diameter, shape, inclination, and wellbore stability all affect the lowering of steel cables, optical fibers, and electrical cables. In highly inclined wells, gravity can cause significant friction between the three types of cables and the wellbore wall, increasing the difficulty of lowering them.

[0003] To address the aforementioned issues, improvements and innovations have been made to the traditional equipment. The existing equipment has been structurally optimized by utilizing a logging winch, guide wheels, multi-level sensors, and cables in combination to ensure the smooth lowering of each cable, reduce operation time, improve work efficiency, and achieve an integrated "traction-stretching-lowering-control" function, effectively enhancing the effectiveness and controllability of logging technology. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a device for precise lowering and measuring of sensor optical cable drilling installation, which can simultaneously and accurately measure the lowering displacement and force magnitude, realize the smooth lowering and precise positioning of multiple cables during the installation of sensor optical cables, reduce operation time, improve work efficiency, and effectively enhance the effectiveness and controllability of logging technology.

[0005] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0006] A precise lowering and measuring device for drilling and installing optical fiber sensing cables includes a winch, a cable laying device mounted on the winch, and a guide rail and a cable laying device mounted on the wellbore; the winch is equipped with a cable reel, which lays the cable under the action of a first drive mechanism.

[0007] The cable routing device includes a first guide wheel and a second guide wheel, with the cable passing around from below the first guide wheel and above the second guide wheel. A tension sensor is provided between the first guide wheel and the second guide wheel.

[0008] The guide rail is circular, and the cable release device can slide along the guide rail under the action of the guiding mechanism. The cable release device includes a winding wheel and a third guide wheel. The cable passes over the third guide wheel and hangs down into the wellbore. The winding wheel is located upstream of the third guide wheel, and the cable passes over the winding wheel. A rotation counter is provided at the shaft of the winding wheel.

[0009] In one embodiment of this utility model, the cable laying device is mounted on a winch via an adjustment mechanism. The adjustment mechanism includes an adjustment frame fixed on the winch and a guide rod and a screw mounted on the adjustment frame. The guide rod and the screw are parallel to the axis of the cable reel. One end of the screw is connected to a second drive mechanism. A transverse frame is mounted on the adjustment frame, and the transverse frame is provided with guide holes and threaded holes corresponding to the guide rod and the screw, respectively. The cable laying device is mounted on the transverse frame.

[0010] In one embodiment of this utility model, the guiding mechanism includes a first guide groove and a second guide groove respectively disposed on the outer and inner sides of the guide rail. The cable release device also includes an adjusting plate and pulleys disposed below the adjusting plate. Several pulleys are disposed on the outer and inner sides of the wellbore, respectively corresponding to the first guide groove and the second guide groove.

[0011] In one embodiment of this utility model, two arc-shaped mounting plates corresponding to the outer and inner walls of the wellbore are provided below the adjusting plate. The shaft of the pulley is installed at the bottom of the adjusting plate and the top of the mounting plate. The adjusting plate and the mounting plate are connected together by a bolt assembly.

[0012] In one embodiment of this utility model, the adjusting plate and the mounting plate are provided with shaft holes corresponding to the rotating shaft of the pulley, so that the pulley can move up and down along the shaft holes; the bottom surface of the adjusting plate is higher than the top surface of the guide groove, and when the distance between the adjusting plate and the mounting plate is reduced by the bolt assembly, the pulley can be pressed tightly against the top of the guide groove.

[0013] In one embodiment of this utility model, an L-shaped first mounting bracket is provided on the transverse frame, the vertical plate of the first mounting bracket is fixed on the transverse frame, a first support is fixed at the bottom of the horizontal plate, the first guide wheel is rotatably mounted on the first support, and the tension sensor is fixed on the first support; a second support is also fixed on the transverse frame, and the second guide wheel is rotatably mounted on the second support.

[0014] In one embodiment of this utility model, the adjustment plate is provided with a second mounting bracket, the shaft of the winding wheel is disposed on the second mounting bracket, and the rotation counter is a rotary encoder mounted on the second mounting bracket and corresponding to the shaft.

[0015] In one embodiment of this utility model, baffles are provided on both sides of the winding wheel, and the cable is wound multiple times on the winding wheel.

[0016] In one embodiment of this utility model, the cable reel is mounted on a winch via a support frame, and the bottom of the winch is equipped with a universal wheel with brakes.

[0017] The beneficial effects of adopting the above technical solution are as follows:

[0018] This utility model provides a precise lowering and measuring device for sensor fiber optic cable drilling installation. A tension sensor monitors cable tension, and a rotation counter measures the number of rotations of the winding reel in real time, thus monitoring the cable's lowering displacement. Through the coordinated operation of the guiding mechanism, adjusting mechanism, and winch position, the cable lowering device can be quickly adjusted in the wellbore. For inclined wellbores, adjusting the position of the cable lowering device reduces friction between the cable and the well wall, ensuring smooth lowering and precise positioning of the sensor fiber optic cable during installation. This reduces operation time, improves work efficiency, and effectively enhances the effectiveness and controllability of logging technology. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the winch and cable laying device in this utility model.

[0021] Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle.

[0022] Figure 4 This is a schematic diagram of the wellbore and cable-laying device in this utility model.

[0023] Figure 5 yes Figure 4 A magnified view of a portion of point B in the middle.

[0024] Figure 6 This is a schematic diagram of the main structure of the cable-laying device in this utility model.

[0025] Figure 7 This is a bottom view of the cable-laying device in this utility model.

[0026] The components are as follows: 1. Wellbore; 2. Guide rail; 201. First guide groove; 202. Second guide groove; 3. Base plate; 4. Caster wheel; 5. Support frame; 6. Cable reel; 7. First drive mechanism; 8. Support frame; 9. Adjustment frame; 10. Guide rod; 11. Screw; 12. Second drive mechanism; 13. Horizontal movement frame; 1301. Guide hole; 1302. Threaded hole; 14. First mounting frame; 15. First bracket; 16. First guide wheel; 17. Tension sensor; 18. Second bracket; 19. Second guide wheel; 20. Adjustment plate; 21. Second mounting frame; 22. Winding wheel; 2201. Rotating shaft; 2202. Baffle; 23. Rotation counter; 24. Third bracket; 25. Third guide wheel; 26. Mounting plate; 27. Connecting plate; 28. Bolt assembly; 30. Pulley; 31. Cable. Detailed Implementation

[0027] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be clearly and completely described below in conjunction with specific embodiments.

[0028] like Figures 1-5 The device shown is a precision lowering and measuring device for drilling and installing optical fiber sensing cables. It includes a winch, a cable laying device mounted on the winch, and a guide rail 2 and a cable laying device mounted on the wellbore 1. The winch is equipped with a cable reel 6, which lays the cable under the action of a first drive mechanism 7.

[0029] The cable routing device includes a first guide wheel 16 and a second guide wheel 19. The cable 31 passes around from below the first guide wheel 16 and above the second guide wheel 19. A tension sensor 17 is provided between the first guide wheel 16 and the second guide wheel 19.

[0030] The guide rail 2 is circular, and the cable release device can slide along the guide rail 2 under the action of the guiding mechanism. The cable release device includes a winding wheel 22 and a third guide wheel 25. The cable 31 passes over the third guide wheel 25 and hangs down into the wellbore 1. The winding wheel 22 is located upstream of the third guide wheel 25. The cable 31 passes over the winding wheel 22. A rotation counter 23 is provided at the shaft 2201 of the winding wheel 22.

[0031] like Figure 2 and Figure 3As shown, in this embodiment, the cable laying device is mounted on the winch via an adjustment mechanism. The adjustment mechanism includes an adjustment frame 9 fixed to the winch and a guide rod 10 and a screw 11 mounted on the adjustment frame 9. The guide rod 10 and screw 11 are parallel to the axis of the cable reel 6. One end of the screw is connected to a second drive mechanism 12. A transverse frame 13 is mounted on the adjustment frame 9, and the transverse frame 13 has guide holes 1301 and threaded holes 1302 corresponding to the guide rod 10 and screw 11, respectively. The cable laying device is mounted on the transverse frame 13. By driving the screw 11 to rotate via the second drive mechanism 12, the position of the transverse frame 13 on the adjustment frame 9 can be adjusted, thereby adjusting the position of the cable laying device to cooperate with the cable reel 6 for cable laying.

[0032] The cable reel 6 is mounted on the winch via a support frame 5. The cable reel 6 is rotatably mounted on the support frame 5 via a rotating shaft. The bottom of the winch is equipped with a universal wheel 4 with a brake. Both the second drive mechanism 12 and the first drive mechanism 7 consist of a geared motor and a sprocket and chain assembly. A driven sprocket is mounted at one end of the shaft of the screw 11 and the cable reel 6. The driven sprocket is driven to rotate by a drive sprocket mounted on the output shaft of the geared motor and a chain.

[0033] like Figures 4-7 As shown, the guiding mechanism includes a first guide groove 201 and a second guide groove 202 respectively disposed on the outer and inner sides of the guide rail 2. The cable-laying device also includes an adjusting plate 20 and pulleys 30 disposed below the adjusting plate 20. Several pulleys 30 are disposed on the outer and inner sides of the wellbore 1, corresponding to the first guide groove 201 and the second guide groove 202 respectively. The thickness of the pulleys 30 matches the height of the first guide groove 201 and the second guide groove 202, ensuring a tight fit and smooth operation.

[0034] Below the adjusting plate 20, two arc-shaped mounting plates 26 are respectively provided, corresponding to the outer and inner walls of the wellbore 1. The rotating shaft of the pulley 30 is installed at the bottom of the adjusting plate 20 and the top of the mounting plate 26. The adjusting plate 20 and the mounting plate 26 are connected together by a bolt assembly 28. Specifically, the adjusting plate 20 and the mounting plate 26 are provided with corresponding connecting plates 27, and the bolt assembly connects the corresponding connecting plates 27 on the adjusting plate 20 and the mounting plate 26 together. As a further optimization, the adjusting plate 20 and the mounting plate 26 are provided with shaft holes corresponding to the rotating shaft of the pulley 30, and the pulley 30 can move up and down along the shaft holes; the top and bottom surfaces of the first guide groove 201 and the second guide groove 202 are flush, and the bottom surface of the adjusting plate 20 is higher than the guide grooves (the top surfaces of the first guide groove 201 and the second guide groove 202). When the distance between the adjusting plate 20 and the mounting plate 26 is reduced by the bolt assembly 28, the pulley 30 can be pressed against the top of the guide groove, thereby fixing the position of the adjusting plate 20.

[0035] like Figure 3 As shown, the transverse frame 13 is provided with an L-shaped first mounting bracket 14. The vertical plate of the first mounting bracket 14 is fixed on the transverse frame 13, and the bottom of the horizontal plate is fixed with a first support 15. The first guide wheel 16 is rotatably mounted on the first support 15, and the tension sensor 17 is fixed on the first support 15. The transverse frame 13 is also fixed with a second support 18, and the second guide wheel 19 is rotatably mounted on the second support 18.

[0036] like Figure 5 As shown, a second mounting bracket 21 is provided on the adjusting plate 20, and the rotating shaft 2201 of the winding wheel 22 is provided on the second mounting bracket 21. The rotation counter 23 is a rotary encoder installed on the second mounting bracket 21 and corresponding to the rotating shaft 2201. Baffles 2202 are provided on both sides of the winding wheel 22, and the cable 31 is wound multiple times on the winding wheel 22.

[0037] The sensing optical cable drilling installation precision lowering and measurement device provided by this utility model can monitor the tension of the cable 31 through the tension sensor 17, and measure the number of rotations and angle changes of the winding wheel 22 in real time through the rotation counter 23. Based on the diameter of the winding wheel 22, the number of rotations of the winding wheel 22 is converted into displacement data of the cable 31 from below the wellhead, thereby accurately monitoring the lowering displacement data of the cable 31, providing accurate data support for logging operations, and helping to improve the reliability and accuracy of logging results.

[0038] By coordinating the guiding mechanism, the adjusting mechanism, and the winch position, the cable laying device can be quickly adjusted in the wellbore 1. For wellbore 1 with an inclination, by adjusting the position of the cable laying device, the cable 31 can be lowered into the wellbore 1 and maintain as much distance as possible from the well wall, thereby reducing the friction between the cable 31 and the well wall. This enables the cable to be laid down smoothly and accurately positioned during the installation of the sensing optical cable, and reduces cable wear.

[0039] In addition, it changes the traditional manual cable laying mode, improving quality while reducing manpower and working time. Steel cables, optical cables, and electrical cables are wound on the surface of the cable reel 6, and with the cable laying device, it is easy to lay and retrieve cables, making cable management more orderly, reducing problems such as cable tangling, knotting, and friction, improving work efficiency, and effectively enhancing the effectiveness and controllability of logging technology.

[0040] Work process:

[0041] (1) Pre-operation preparation: Before the logging operation begins, the operator sets the initial parameters of the winch through the control panel of the intelligent remote-controlled logging winch, including but not limited to the initial tension range, the lowering speed range, and the depth measurement calibration. At the same time, the operator checks the connection status of all equipment, the working status of the sensors, and the operating status of each component to ensure that the equipment is in good working condition.

[0042] (2) Cable Lowering Operation: After initiating the cable lowering operation, the winch begins to lower the cable. The cable passes sequentially through the cable guide and the guide wheel on the cable lowering device, slowly entering the wellbore 1. Throughout the lowering process, the tension sensor 17 monitors the cable tension in real time and transmits the data to the control system. If the tension is abnormal, the control system will respond quickly and automatically adjust the winch's operating status to ensure that the cable tension is always within a suitable range. At the same time, the rotation counter 23 measures the rotation of the wellhead winding wheel 22 in real time, accurately calculates the cable displacement, and feeds the data back to the operator in real time. The operator can remotely monitor and operate the winch using a smart remote control. Based on the actual situation, such as the wellbore condition and feedback from logging instruments, the operator can flexibly adjust relevant parameters to ensure that the lowering process of the test optical cable is carried out safely, efficiently, and accurately.

[0043] (3) End of operation: After the logging operation is completed, the operator uses the remote control to control the winch to slowly pull up the cable and return the test optical cable to the initial position. Turn off the power to all equipment, clean and maintain the equipment, and prepare for the next operation.

[0044] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sensing optical cable borehole installation precision lowering and measuring device, characterized by: It includes winch, cable arranging device arranged on the winch, guide rail (2) and cable releasing device arranged on the wellbore (1); the winch is provided with cable reel (6), the cable reel (6) is under the action of first driving mechanism (7) and carries out pay-off; The cable arranging device includes first guide wheel (16) and second guide wheel (19), the cable (31) passes through the first guide wheel (16) and the second guide wheel (19), and a tension sensor (17) is arranged between the first guide wheel (16) and the second guide wheel (19); The guide rail (2) is annular, the cable releasing device can slide along the guide rail (2) under the action of guide mechanism, the cable releasing device includes winding wheel (22) and third guide wheel (25), the cable (31) passes through the third guide wheel (25) from above and then drops into the wellbore (1), the winding wheel (22) is located upstream of the third guide wheel (25), the cable (31) passes through the winding wheel (22), and a rotation counter (23) is arranged at the rotation shaft (2201) of the winding wheel (22).

2. A sensing cable borehole installation precision lowering and measuring apparatus according to claim 1, characterized in that: The cable arranging device is arranged on the winch through adjusting mechanism, the adjusting mechanism includes adjusting frame (9) fixed on the winch and guide rod (10) and screw rod (11) arranged on the adjusting frame (9), the guide rod (10) and the screw rod (11) are parallel to the axis of the cable reel (6), one end of the screw rod is connected with the second driving mechanism (12), the adjusting frame (9) is provided with transverse moving frame (13), the transverse moving frame (13) is provided with guide hole (1301) and screw hole (1302) corresponding to the guide rod (10) and the screw rod (11) respectively, and the cable arranging device is arranged on the transverse moving frame (13).

3. A sensing cable borehole installation precision lowering and measuring apparatus according to claim 1, characterized in that: The guide mechanism includes first guide groove (201) and second guide groove (202) arranged on the outer side and the inner side of the guide rail (2) respectively, and the cable releasing device further includes adjusting plate (20) and pulley (30) arranged below the adjusting plate (20), a plurality of pulleys (30) are arranged on the outer side and the inner side of the wellbore (1) respectively and correspond to the first guide groove (201) and the second guide groove (202) respectively.

4. A sensing optical cable borehole installation precision lowering and measuring apparatus according to claim 3, characterized in that: Two arc-shaped mounting plates (26) corresponding to the outer wall and the inner wall of the wellbore (1) are arranged below the adjusting plate (20), the rotation shaft of the pulley (30) is mounted on the bottom of the adjusting plate (20) and the top of the mounting plate (26), and the adjusting plate (20) and the mounting plate (26) are connected together through bolt assembly (28).

5. A sensing optical cable borehole installation precision lowering and measuring apparatus according to claim 4, characterized in that: The adjusting plate (20) and the mounting plate (26) are provided with shaft holes corresponding to the rotation shaft of the pulley (30), so that the pulley (30) can move up and down along the shaft hole, and the bottom surface of the adjusting plate (20) is higher than the top surface of the guide groove, when the distance between the adjusting plate (20) and the mounting plate (26) is reduced through the bolt assembly (28), the pulley (30) can be tightly pressed on the top of the guide groove.

6. A sensing optical cable borehole installation precision lowering and measuring apparatus according to claim 2, characterized in that: The horizontal moving frame (13) is provided with an L-shaped first mounting frame (14), the vertical plate of the first mounting frame (14) is fixed on the horizontal moving frame (13), the bottom of the horizontal plate is fixed with a first support (15), the first guide wheel (16) is rotatably installed on the first support (15), and the tension sensor (17) is fixed on the first support (15); the horizontal moving frame (13) is further fixed with a second support (18), and the second guide wheel (19) is rotatably installed on the second support (18).

7. A sensing cable borehole installation precision lowering and measuring apparatus according to claim 3, characterized in that: The adjusting plate (20) is provided with a second mounting frame (21), the rotating shaft (2201) of the winding wheel (22) is arranged on the second mounting frame (21), and the rotation cycle counter (23) is a rotary encoder corresponding to the rotating shaft (2201) and installed on the second mounting frame (21).

8. A sensing optical cable borehole installation precision lowering and measuring apparatus according to claim 7, characterized in that: The winding wheel (22) is provided with a baffle (2202) on both sides, and the cable (31) is wound on the winding wheel (22) for multiple turns.

9. A sensing optical cable borehole installation precision lowering and measuring apparatus according to claim 1, characterized in that: The cable reel (6) is arranged on the winch through the support frame (5), and the bottom of the winch is provided with a universal wheel (4) with a brake.

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