Tubular instrument fishing device for well drilling

Abstract

The utility model discloses a tubular instrument fishing device for well drilling. The tubular instrument salvage device for well drilling comprises a supporting plate, and a positioning and fixing mechanism is arranged on the supporting plate; the positioning and fixing mechanism comprises a positioning assembly and a fixing assembly; the positioning assembly comprises a supporting ring rotationally installed in the middle of the supporting plate, three first installation seams are formed in the supporting ring, movable rods are installed in the first installation seams in a sliding mode, three rails are fixedly installed on the top of the supporting plate, and sliding blocks are installed on the rails in a sliding mode. According to the tubular instrument fishing device for well drilling, the supporting plate is provided with the positioning and fixing mechanism comprising the supporting ring, the first installation seam, the track, the sliding block, the movable rod, the installation pipe, the stopping and leaning rod and the screw rod, the device is positioned through the stopping and leaning rod and then fixed through the screw rod, the stopping and leaning rod is moved out of the range of a well mouth after being fixed, and the device is fixed. And well lifting operation of the instrument can be facilitated, and use is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of retrieval device technology, and in particular to a retrieval device for tubular instruments used in drilling. Background Technology

[0002] Drilling is an engineering process that uses mechanical equipment to drill cylindrical holes of a certain depth into the formation. During oil drilling, well monitoring is necessary. Most of the instruments used for drilling and logging are tubular instruments, which frequently fall into the wellbore during use. Currently, there are no retrieval tools specifically designed for tubular instruments that have fallen into the open hole, making them very difficult to retrieve.

[0003] A document with publication number CN222045712U discloses a drilling tubular instrument retrieval device. The device includes a base plate and an L-shaped bracket fixedly mounted on the top of the base plate. Support columns are fixedly mounted at the four corners of the base plate's bottom, and locking casters are fixedly mounted at the bottom of the support columns. A controller is mounted on the vertical plate of the L-shaped bracket. A winding reel is rotatably mounted on the bottom of the horizontal plate of the L-shaped bracket, and a load cable is wound around the reel. A housing is fixedly mounted at the end of the load cable facing away from the reel, and a guide mechanism is mounted on the housing. The other end of the load cable is electrically connected to the controller. A magnetic attraction mechanism is mounted on the housing. A positioning mechanism is mounted on the vertical plate of the L-shaped bracket. The device offers the advantage of smooth retrieval.

[0004] However, when using this device, the stop plate in the positioning mechanism needs to be inserted into the wellhead for positioning. Therefore, during the process of retrieving the filling tubular instrument that has fallen into the wellhead, if the diameter of the instrument is close to the inner diameter of the wellhead, the stop plate may obstruct the instrument from being lifted into the well, making it impossible to retrieve the instrument smoothly.

[0005] Therefore, it is necessary to provide a drilling tubular instrument retrieval device to solve the above-mentioned technical problems. Utility Model Content

[0006] In view of the above situation and to overcome the defects of the existing technology, this utility model provides a drilling tubular instrument retrieval device that can facilitate the lifting of the instrument to the well.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A drilling tubular instrument retrieval device includes: a support plate, a positioning and fixing mechanism on the support plate, the positioning and fixing mechanism including a positioning component and a fixing component, the positioning component including a support ring rotatably installed in the middle of the support plate, the support ring having three arc-shaped first mounting slots, a movable rod slidably installed in the first mounting slots, three rails fixedly installed on the top of the support plate, sliders slidably installed on the rails, the bottom end of the movable rod being fixedly connected to the slider, an installation tube fixedly installed at one end of the slider, a stop rod installed inside the installation tube, and the fixing component including four screws installed at the bottom of the support plate.

[0009] Preferably, the support ring has three arc-shaped second mounting seams, and an arc-shaped positioning plate is installed in the second mounting seam. The bottom end of the positioning plate is fixedly connected to the support plate.

[0010] Preferably, a motor is mounted on the top of the support plate, a gear is mounted on the top of the motor, and a gear ring is fixedly mounted on the side of the support ring, with the gear meshing with the gear ring.

[0011] Preferably, an upper limit ring and a lower limit ring are fixedly installed on the movable rod, and the upper limit ring and the lower limit ring are located on the upper and lower sides of the first mounting seam, respectively.

[0012] Preferably, a pull ring and a ball head are installed on the stop bar.

[0013] Preferably, a rubber ring is installed inside the mounting tube.

[0014] Preferably, the support plate is provided with a support mechanism, which includes two electric push rods mounted on the support plate, a horizontal plate mounted at the bottom end of the electric push rods, and two casters mounted at the bottom of the horizontal plate.

[0015] Preferably, a guide rod is installed at the top of the horizontal plate, and a guide tube is installed on the support plate, with the guide rod and the guide tube slidably connected.

[0016] Preferably, the support plate is provided with a winding mechanism and a magnetic attraction mechanism. The winding mechanism includes an electric cable reel and a positioning tube installed above the support plate. The load cable is wound and installed on the electric cable reel, and the bottom end of the load cable is connected to the magnetic attraction mechanism.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) This utility model provides a positioning and fixing mechanism on the support plate, including a support ring, a first mounting seam, a track, a slider, a movable rod, a mounting tube, a stop rod and a screw. The device is positioned by the stop rod and then fixed by the screw. After fixing, the stop rod is moved out of the wellhead area, which facilitates the lifting operation of the instrument and makes it more convenient to use.

[0019] (2) By setting gears, gear rings and motors, this utility model can drive the support ring to rotate in a convenient and labor-saving manner;

[0020] (3) This utility model can facilitate the use of the stop rod by installing a pull ring and a ball head on the stop rod;

[0021] (4) This utility model can facilitate the use of the stop rod by installing a rubber ring inside the installation tube;

[0022] (5) By setting an adjustable height support mechanism, this utility model can easily adjust the height of the support plate, improve the passability of the device, and can be used for wellheads of different heights;

[0023] (6) By setting guide tubes and guide rods, this utility model can improve the stability of the horizontal plate. Attached Figure Description

[0024] Figure 1 A schematic diagram of the structure of the drilling tubular instrument retrieval device provided by this utility model;

[0025] Figure 2 for Figure 1 The diagram shows the structure of the positioning component in the drilling tubular instrument retrieval device.

[0026] Figure 3 for Figure 1 The diagram shows the installation position of the track in the drilling tubular instrument retrieval device.

[0027] Figure 4 for Figure 1 The diagram shows the structure of the stop rod of the drilling tubular instrument retrieval device.

[0028] Figure 5 for Figure 1 A partial cross-sectional view of the installation pipe in the drilling tubular instrument retrieval device shown.

[0029] Figure 6 for Figure 1 The diagram shows the structural schematic of the support mechanism in the drilling tubular instrument retrieval device.

[0030] Figure 7 for Figure 1 The diagram shows a front view of the cutting mechanism in a drilling tubular instrument retrieval device.

[0031] The corresponding names of the attached figures are as follows: 1-Support plate, 2-Support ring, 3-First mounting seam, 4-Railway, 5-Slider, 6-Moving rod, 7-Mounting tube, 8-Stop rod, 9-Screw, 10-Gear, 11-Gear ring, 12-Motor, 13-Second mounting seam, 14-Positioning plate, 15-Upper limit ring, 16-Lower limit ring, 17-Pull ring, 18-Ball head, 19-Rubber ring, 20-Electric push rod, 21-Horizontal plate, 22-Universal wheel, 23-Guide tube, 24-Guide rod, 25-Electric cable reel, 26-Load cable, 27-Magnetic suction mechanism, 28-Positioning tube. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of the present invention include, but are not limited to, the following embodiments.

[0033] Example 1:

[0034] like Figure 1-7As shown, the drilling tubular instrument retrieval device provided by this utility model includes: a support plate 1 with a hole in the middle. The support plate 1 is provided with a support mechanism, a positioning and fixing mechanism, a winding mechanism and a magnetic attraction mechanism 27. The magnetic attraction mechanism 27 adopts the structural design in CN222045712U, which will not be described in detail here. The positioning and fixing mechanism includes a positioning component and a fixing component. The positioning component includes a support ring 2 rotatably mounted in the middle of the support plate 1. The support ring 2 has three arc-shaped first mounting slots 3 and second mounting slots 13. A movable rod 6 is slidably mounted in the first mounting slot 3, and an arc-shaped positioning plate 14 is mounted in the second mounting slot 13. The bottom end of the positioning plate 14 is fixedly connected to the support plate 1, so that the support ring 2 and the support plate 1 are rotatably connected through the three ring-shaped positioning plates 14 (and the second mounting slots 13). Three rails 4 are fixedly mounted on the top of the support plate 1, and sliders 5 are slidably mounted on the rails 4. The bottom end of the movable rod 6 is fixedly connected to the slider 5. An installation tube 7 is fixedly mounted on one end of the slider 5, and a stop rod 8 is installed in the installation tube 7. The fixing component includes four screws 9 mounted on the bottom of the support plate 1. In use, the device is moved above the wellhead, with the support plate 1 parallel to the top of the wellhead and the wellhead aligned with the central opening of the support plate 1. The support ring 2 is then pushed to rotate, causing the movable rod 6 to be pressed against the inner wall of the first mounting seam 3 and slide along the track 4. The mounting tube 7 moves towards the center of the wellhead until the stop rod 8 is inside the wellhead, at which point the support ring 2 stops. The stop rod 8 is then inserted downwards along the mounting tube 7 until its bottom end extends into the wellhead. The support ring 2 is then driven to rotate in the opposite direction, causing the three stop rods 8 to move synchronously away from the center of the wellhead until all three stop rods 8 abut against the inner wall of the wellhead, at which point the support ring 2 stops. This is similar to the automatic centering principle of a three-jaw chuck. At this point, the center of the wellhead is aligned with the center of the central opening of the support plate 1. Then, the device is rotated... Four screws 9 are used to move the screws 9 toward the center of the wellhead until the screws 9 press tightly against the outer wall of the wellhead. The four screws 9 press tightly against the outer wall of the wellhead from four directions, thereby fixing the support plate 1 at the wellhead. Then, the support ring 2 is driven to rotate in the forward direction, so that the stop rod 8 is disengaged from the inner wall of the wellhead. Then, the stop rod 8 is lifted up so that its bottom end is higher than the top of the wellhead. The support ring 2 is rotated in the reverse direction to move the stop rod 8 to the outside of the wellhead until the stop rod 8 is completely moved outside the wellhead. Then, the retrieval of the instrument that has fallen into the well can begin. The retrieval process can be referred to the content disclosed in CN222045712U, and will not be repeated here. It is worth mentioning that since the stop rod 8 is located outside the wellhead, it will not hinder the instrument's lifting process. The instrument can be smoothly retrieved from the wellhead, making it more convenient to use.

[0035] By setting a positioning and fixing mechanism on the support plate 1, including a support ring 2, a first mounting seam 3, a track 4, a slider 5, a movable rod 6, a mounting tube 7, a stop rod 8, and a screw 9, the device is positioned by the stop rod 8 and then fixed by the screw 9. After fixing, the stop rod 8 is moved out of the wellhead area, which facilitates the lifting operation of the instrument and makes it more convenient to use.

[0036] Example 2:

[0037] like Figure 2 As shown, in this embodiment, a motor 12 is installed on the top of the support plate 1. The motor 12 can be powered by an external line or by a battery installed on the side or top of the support plate 1. A gear 10 is installed on the top of the output shaft of the motor 12, and a gear ring 11 is fixedly installed on the side of the support ring 2. The gear 10 meshes with the gear ring 11. When in use, the switch controls the forward and reverse rotation of the motor 12, so that the gear 10 drives the gear ring 11 to rotate, thereby causing the support ring 2 to rotate. In this way, it is more labor-saving and convenient to use.

[0038] By setting up gear 10, gear ring 11 and motor 12, the support ring 2 can be driven to rotate in a convenient and labor-saving manner.

[0039] Example 3:

[0040] like Figure 2-4 As shown, in this embodiment, an upper limit ring 15 and a lower limit ring 16 are fixedly installed on the movable rod 6. The movable rod 6 passes through the first mounting seam 3. The upper limit ring 15 and the lower limit ring 16 are located on the upper and lower sides of the first mounting seam 3, respectively, thereby preventing the movable rod 6 from coming out of the first mounting seam 3.

[0041] By fixing the upper limit ring 15 and the lower limit ring 16 on the movable rod 6, it is convenient to limit the movement between the movable rod 6 and the first mounting seam 3.

[0042] Example 4:

[0043] like Figure 4 As shown, in this embodiment, a pull ring 17 is installed at the top of the stop rod 8 and a ball head 18 is installed at the bottom. When in use, the stop rod 8 can be easily pulled by the pull ring 17, and the design of the ball head 18 reduces the contact area between the stop rod 8 and the inner wall of the wellhead, making it easier to use the stop rod 8.

[0044] By installing a pull ring 17 and a ball head 18 on the stop bar 8, the use of the stop bar 8 can be facilitated.

[0045] Example 5:

[0046] like Figure 5As shown, a rubber ring 19 is fixedly installed inside the mounting tube 7. The stop rod 8 passes through the middle of the rubber ring 19 and squeezes the rubber ring 19, so that the height of the stop rod 8 remains unchanged when it is not subjected to external force, which plays a damping role and facilitates the use of the stop rod 8.

[0047] By installing a rubber ring 19 inside the mounting tube 7, the use of the stop rod 8 can be facilitated.

[0048] Example 6:

[0049] like Figure 6 As shown, the support mechanism includes two electric push rods 20 symmetrically fixed on the support plate 1. The electric push rods 20 can be powered by an external power line or by a battery transformer, which will not be described further here. A horizontal plate 21 is installed at the bottom of the electric push rod 20, and two casters 22 are installed at the bottom of the horizontal plate 21. In use, the electric push rods 20 can be activated to extend them, thereby raising the height of the support plate 1, thus improving the device's passability and adapting it to wellheads of different heights, allowing the device to move smoothly above the wellhead.

[0050] By setting an adjustable support mechanism, the height of the support plate 1 can be easily adjusted, improving the device's passability and making it suitable for wellheads of different heights.

[0051] Example 7:

[0052] like Figure 6 As shown, a guide rod 24 is installed on the top of the horizontal plate 21, and a guide tube 23 is installed on the support plate 1. The guide rod 24 and the guide tube 23 are slidably connected, which can limit and guide the horizontal plate 21 and improve the stability of the horizontal plate 21.

[0053] By setting guide tube 23 and guide rod 24, the stability of the horizontal plate 21 can be improved.

[0054] Example 8:

[0055] like Figure 1 and Figure 7As shown, in this embodiment, the winding mechanism includes an electric cable reel 25 mounted above the support plate 1. A load cable 26 is wound and mounted on the electric cable reel 25. The bottom end of the load cable 26 is connected to a magnetic attraction mechanism 27. The load cable 26 can supply power to the magnetic attraction mechanism 27 through a cable rotary connector. A positioning tube 28 is fixedly mounted above the support plate 1. The positioning tube 26 is located directly above the center of the central opening of the support plate 1. The load cable 26 passes through the positioning tube 28, so that the load cable 26 can be lowered basically at the center of the wellhead. Moreover, the two ends of the positioning tube 28 are open, so that the load cable 26 experiences less wear on the inner wall edge of the two ends of the positioning tube 28 when passing through it, thereby improving the service life of the load cable 26. The electric cable reel 25 starts and releases the load cable 26, allowing the magnetic attraction mechanism 27 to enter the wellhead until it descends to the height of the tubular instrument (or add more cable to ensure the magnetic attraction mechanism 27 can properly attract the instrument). The instrument is attracted by the magnetic attraction mechanism 27, and then the magnetic attraction mechanism 27 is lifted to remove the instrument from the well. After the instrument is raised to the point where its bottom exceeds the top height of the support ring 2, the instrument is pulled to one side and removed.

[0056] By setting up a winding mechanism including an electric cable reel 25, a load cable 26, and a positioning tube 28, the magnetic suction mechanism 27 can be easily placed into the wellhead.

[0057] Working principle: In use, move the device above the wellhead, with the support plate 1 parallel to the top of the wellhead and the wellhead aligned with the central opening of the support plate 1. Then, push the support ring 2 to rotate, causing the movable rod 6 to be pressed against the inner wall of the first mounting seam 3 and slide along the track 4. The mounting tube 7 moves towards the center of the wellhead until the stop rod 8 is located inside the wellhead, at which point the support ring 2 stops. Then, insert the stop rod 8 downwards along the mounting tube 7 until its bottom end extends into the wellhead. Then, drive the support ring 2 to rotate in the opposite direction, causing the three stop rods 8 to move synchronously away from the center of the wellhead until all three stop rods 8 abut against the inner wall of the wellhead. Ring 2 stops, similar to the automatic centering principle of a three-jaw chuck. At this point, the center of the wellhead is aligned with the center of the central opening of support plate 1. Then, rotate the four screws 9, moving them towards the center of the wellhead until they press tightly against the outer wall of the wellhead. The four screws 9 press against the outer wall of the wellhead from four directions, thus fixing support plate 1 at the wellhead. Then, drive support ring 2 to rotate forward, causing the stop rod 8 to disengage from the inner wall of the wellhead. Then, lift the stop rod 8 so that its bottom is higher than the top of the wellhead, and rotate support ring 2 in the opposite direction, moving the stop rod 8 outward until it is completely outside the wellhead. Then, the retrieval of the instrument that fell into the well can begin. Since the stop rod 8 is located outside the wellhead, it will not obstruct the instrument's lifting process, allowing the instrument to be retrieved smoothly from the wellhead, making it more convenient to use.

Claims

1. A drilling tubular instrument retrieval device, characterized in that, include: A support plate (1) is provided with a positioning and fixing mechanism; The positioning and fixing mechanism includes a positioning component and a fixing component; The positioning assembly includes a support ring (2) rotatably mounted in the middle of the support plate (1), three first mounting slots (3) are provided on the support ring (2), a movable rod (6) is slidably mounted in the first mounting slots (3), three tracks (4) are fixedly mounted on the top of the support plate (1), sliders (5) are slidably mounted on the tracks (4), the bottom end of the movable rod (6) is fixedly connected to the slider (5), an installation tube (7) is fixedly mounted on one end of the slider (5), and a stop rod (8) is installed inside the installation tube (7). The fixing assembly includes four screws (9) mounted on the bottom of the support plate (1).

2. The drilling tubular instrument retrieval device according to claim 1, characterized in that, The support ring (2) has three second mounting seams (13), and a positioning plate (14) is installed in the second mounting seam (13). The bottom end of the positioning plate (14) is fixedly connected to the support plate (1).

3. The drilling tubular instrument retrieval device according to claim 1, characterized in that, A motor (12) is installed on the top of the support plate (1), a gear (10) is installed on the top of the motor (12), and a gear ring (11) is fixedly installed on the side of the support ring (2). The gear (10) meshes with the gear ring (11).

4. The drilling tubular instrument retrieval device according to claim 1, characterized in that, The upper limit ring (15) and the lower limit ring (16) are fixedly installed on the movable rod (6).

5. A drilling tubular instrument retrieval device according to claim 1, characterized in that, A pull ring (17) and a ball head (18) are installed on the stop bar (8).

6. The drilling tubular instrument retrieval device according to claim 1, characterized in that, A rubber ring (19) is installed inside the mounting tube (7).

7. A drilling tubular instrument retrieval device according to claim 1, characterized in that, The support plate (1) is provided with a support mechanism, which includes two electric push rods (20) installed on the support plate (1). A horizontal plate (21) is installed at the bottom end of the electric push rods (20), and two casters (22) are installed at the bottom of the horizontal plate (21).

8. A drilling tubular instrument retrieval device according to claim 7, characterized in that, A guide rod (24) is installed on the top of the horizontal plate (21), and a guide tube (23) is installed on the support plate (1). The guide rod (24) and the guide tube (23) are slidably connected.

9. A drilling tubular instrument retrieval device according to claim 1, characterized in that, The support plate (1) is provided with a winding mechanism and a magnetic attraction mechanism (27). The winding mechanism includes an electric cable reel (25) and a positioning tube (28) installed above the support plate (1). The electric cable reel (25) winds up a load cable (26), and the bottom end of the load cable (26) is connected to the magnetic attraction mechanism (27).

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