Internal support type wellbore hoisting device with guiding function

Abstract

The utility model relates to hoist and mount device technical field especially with the inside support formula wellbore hoist and mount device with the function of guiding, its mainly for the existing hoist and mount device only relies on the gravity of self and makes the support structure to fit the friction of wellbore inner wall, and the easy appearance of skidding, both destroy hoist and mount accuracy and cause installation deviation, influence construction efficiency's problem, and propose the following technical scheme including derrick, the derrick top is equipped with the lifting ring, the inside support mechanism of installation in the derrick outer ring, the inside support mechanism is used for fixing the derrick in wellbore inner wall, the positioning assembly of setting in the inside support mechanism top, the positioning assembly is used for firming the inside support mechanism and preventing it from separating with wellbore, the guide mechanism of installation in the derrick bottom. The utility model has solved the problem that the existing device is easy to slip, improved the support stability and operation safety, also solved the hoist and mount deviation problem, improved the wellbore butt joint accuracy and construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of hoisting device technology, and in particular to an internally supported wellbore hoisting device with guiding function. Background Technology

[0002] In engineering fields such as oil and gas extraction, urban underground pipeline laying, and mine construction, the installation and maintenance of well shaft structures often require the use of hoisting equipment to achieve precise positioning and movement. Internally supported well shaft hoisting equipment with guiding function has become a key piece of equipment in such operations because it can provide support from inside the well shaft and guide the hoisting trajectory.

[0003] The publication number CN221777410U discloses an internally supported wellbore hoisting device with guiding function. Its guiding and anti-deviation functions mainly rely on the friction between the side of the device and the inner wall of the wellbore. Its design logic is to use the device's own weight to make the side support structure naturally fit against the inner wall of the wellbore, thereby generating contact friction to resist the lateral deviation caused by uneven force, uneven inner wall of the wellbore, or external environmental interference during hoisting.

[0004] However, this method of relying solely on gravity for friction has significant drawbacks. In actual operations, factors such as variations in lifting load, slight deviations in the inner diameter of the wellbore, or the limited weight of the support structure itself can lead to insufficient normal pressure between the side of the device and the inner wall of the wellbore, making it difficult for the friction to meet the requirements for stable guidance and anti-slippage. When the lifting device is subjected to a large longitudinal load or lateral impact force, the support structure is prone to sliding relative to the inner wall of the wellbore. This slippage not only compromises the accuracy of the lifting and causes the wellbore installation position to shift, but may also lead to safety hazards such as device shaking and force imbalance. In severe cases, it can even cause equipment damage or engineering accidents, affecting construction efficiency and operational safety. In view of this, this utility model proposes an internally supported wellbore lifting device with a guiding function. Utility Model Content

[0005] The purpose of this invention is to address the problem in the prior art that existing hoisting devices rely solely on their own weight to generate friction between the support structure and the inner wall of the wellbore, which can easily lead to slippage, compromise hoisting accuracy, cause installation deviation, and affect construction efficiency. The invention proposes an internally supported wellbore hoisting device with a guiding function.

[0006] The technical solution of this utility model is as follows: an internally supported wellbore hoisting device with guiding function, including a hoisting rod with a hoisting ring installed at the top; an internal support mechanism installed on the outer ring of the hoisting rod, which is used to fix the hoisting rod to the inner wall of the wellbore; a positioning component disposed on the top of the internal support mechanism, which is used to stabilize the internal support mechanism and prevent it from separating from the wellbore; and a guide mechanism installed at the bottom of the hoisting rod, which is used to guide the hoisting process.

[0007] Optionally, the inner support mechanism includes a fixed cylinder fixedly connected to the outer ring of the boom. The outer ring of the fixed cylinder is hinged with multiple sets of support rods, which are arranged in a circular array. A pressure block is hinged to the end of each support rod away from the fixed cylinder, and a rubber pad is installed on the side of the pressure block.

[0008] Optionally, a movable cylinder is provided above the fixed cylinder, the movable cylinder is slidably sleeved on the outer ring of the boom, and multiple sets of support rods are respectively hinged to the movable cylinder with adjusting rods.

[0009] Optionally, the positioning component includes a movable ring disposed above the movable cylinder, the movable ring being sleeved on the outer ring of the boom, a connecting ring being fixedly connected to the top of the movable ring, the connecting ring having an L-shaped cross-section, a threaded sleeve being rotatably connected to the connecting ring, and the threaded sleeve being threadedly connected to the boom.

[0010] Optionally, a connecting cylinder is fixedly connected to the top of the threaded sleeve, the connecting cylinder is sleeved on the outer ring of the boom, and a rotating wheel is installed on the outer ring of the connecting cylinder.

[0011] Optionally, the bottom of the movable ring is fixedly connected to multiple sets of connecting rods, and connecting blocks are slidably sleeved on each of the multiple sets of connecting rods. The multiple sets of connecting blocks are all fixedly connected to the outer ring of the movable cylinder, and a limit plate is fixedly connected to the bottom of the connecting rod.

[0012] Optionally, the guiding mechanism includes a mounting block fixedly connected to the bottom of the boom, and multiple sets of inclined elastic plates are mounted on the top of the mounting block. The multiple sets of elastic plates are arranged in a circular array, and a positioning ring is connected to all of the multiple sets of elastic plates.

[0013] Optionally, the guiding mechanism further includes multiple sets of fixing blocks, each set of fixing blocks corresponding to the position of the elastic plate, and a pull rope connecting the end of the elastic plate away from the mounting block to the fixing block.

[0014] In summary, this application includes at least one of the following beneficial technical effects:

[0015] This invention uses a rotating wheel to drive the threaded sleeve downwards, which in turn pushes the moving cylinder to slide via a moving ring and connecting rod. Then, the adjusting rod drives the support rod to unfold, so that the rubber pad on the side of the pressure block is tightly pressed against the inner wall of the well. With the help of the self-locking characteristics of the threaded sleeve and the lifting rod, a stable positive pressure can be maintained continuously. Combined with the high coefficient of friction of the rubber pad, a frictional force far exceeding the effect of gravity is generated, which effectively avoids slippage caused by load changes and well inner diameter deviations during hoisting, and significantly improves the support stability and operational safety of the device.

[0016] Furthermore, by installing the elastic plates in the ring array at the top of the block, when entering the lower shaft, the plates can adapt to deformation and fit tightly under the constraint of the inner wall of the shaft. The positioning ring can ensure the stability of the spacing between the elastic plates, thereby forming a symmetrical and centered guiding force on the boom, so that the boom is always in the position of the lower shaft axis. This guiding effect is transmitted to the inner support mechanism through the fixed cylinder, which in turn drives the upper shaft to accurately align with the lower shaft. This solves the docking deviation problem caused by device offset in traditional hoisting, and greatly improves the accuracy of shaft installation and construction efficiency.

[0017] In summary, this invention solves the problem of slippage in existing devices, improves support stability and operational safety, solves the problem of hoisting offset, and improves wellbore docking accuracy and construction efficiency. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of an internally supported wellbore hoisting device with guiding function;

[0019] Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure;

[0020] Figure 3 yes Figure 1 Enlarged view of point A in the middle;

[0021] Figure 4 yes Figure 2 Enlarged diagram of point B in the middle.

[0022] Figure label:

[0023] 1. Lifting rod; 11. Lifting ring;

[0024] 2. Internal support mechanism; 21. Fixed cylinder; 22. Support rod; 23. Pressure block; 24. Rubber pad; 25. Moving cylinder; 26. Adjusting rod;

[0025] 3. Positioning component; 31. Moving ring; 32. Connecting ring; 33. Threaded sleeve; 34. Connecting cylinder; 35. Rotary wheel; 36. Connecting rod; 37. Connecting block; 38. Limiting plate;

[0026] 4. Guiding mechanism; 41. Mounting block; 42. Elastic plate; 43. Positioning ring; 44. Fixing block; 45. Pull rope. Detailed Implementation

[0027] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0028] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0029] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] Example

[0033] like Figure 1 As shown, the internally supported wellbore hoisting device with guiding function proposed in this utility model includes a hoisting rod 1, and a hoisting ring 11 is installed on the top of the hoisting rod 1 to facilitate the lifting of the device by the hook of the hoisting equipment.

[0034] For further details, please refer to Figures 1 to 3The aforementioned hoisting device includes an inner support mechanism 2 installed on the outer ring of the boom 1, which is used to fix the boom 1 to the inner wall of the well shaft. The inner support mechanism 2 includes a fixed cylinder 21 fixedly connected to the outer ring of the boom 1. When the boom 1 moves, it drives the fixed cylinder 21 to move synchronously. Multiple sets of support rods 22 are hinged to the outer ring of the fixed cylinder 21. The multiple sets of support rods 22 are arranged in a circular array. A pressure block 23 is hinged to the end of the support rod 22 away from the fixed cylinder 21. A rubber pad 24 is installed on the side of the pressure block 23. After the rubber pad 24 contacts the inside of the well shaft, the large friction prevents it from sliding. A movable cylinder 25 is provided above the fixed cylinder 21. The movable cylinder 25 is slidably sleeved on the outer ring of the boom 1. Adjusting rods 26 are respectively hinged between the multiple sets of support rods 22 and the movable cylinder 25. When the movable cylinder 25 moves downward, it drives one end of the support rod 22 away from the boom 1 through the adjusting rod 26, thereby causing the pressure block 23 to come close to the well shaft and squeeze the rubber pad 24, so that the inner support mechanism 2 is fixed in the well shaft. Conversely, when the moving cylinder 25 moves upward, it drives multiple sets of pressure blocks 23 away from the well cylinder, making it easier for the device to be removed from the well cylinder.

[0035] Furthermore, such as Figures 1 to 4 As shown, the hoisting device also includes a positioning component 3 located on top of the inner support mechanism 2. The positioning component 3 is used to stabilize the inner support mechanism 2 and prevent it from separating from the well casing. The positioning component 3 includes a moving ring 31 located above the moving cylinder 25. The moving ring 31 is sleeved on the outer ring of the boom 1. A connecting ring 32 is fixedly connected to the top of the moving ring 31. The connecting ring 32 has an L-shaped cross-section. A threaded sleeve 33 is rotatably connected to the connecting ring 32. The threaded sleeve 33 is rotatably connected to the top of the moving ring 31 through the connecting ring 32. The threaded sleeve 33 is threadedly connected to the boom 1. When rotating, the threaded sleeve 33 can move along the length of the boom 1 and can move up or down. When moving down, the threaded sleeve 33 pushes the moving cylinder 25 downward through the moving ring 31, causing the moving cylinder 25 to move downward. This causes the pressure block 23 to approach the well casing and squeeze the rubber pad 24. After the threaded sleeve 33 is tightened, it ensures that the pressure block 23 exerts greater pressure on the well casing and prevents the rubber pad 24 from sliding with the well casing. A connecting cylinder 34 is fixedly connected to the top of the threaded sleeve 33. The connecting cylinder 34 is sleeved on the outer ring of the lifting rod 1. A rotating wheel 35 is installed on the outer ring of the connecting cylinder 34. The connection cylinder 34 and the rotating wheel 35 facilitate the rotation of the connecting cylinder 34. Multiple sets of connecting rods 36 are fixedly connected to the bottom of the moving ring 31. Connecting blocks 37 are slidably sleeved on the multiple sets of connecting rods 36. The multiple sets of connecting blocks 37 are all fixedly connected to the outer ring of the moving cylinder 25. A limiting plate 38 is fixedly connected to the bottom of the connecting rods 36. When the threaded sleeve 33 moves upward, it drives the moving ring 31 to move upward. At the same time, the connecting rods 36 and the limiting plate 38 drive the connecting blocks 37 to move upward, thereby causing the moving cylinder 25 to slide upward. As a result, the multiple sets of pressure blocks 23 move away from the well shaft, making it easier for the device to be removed from the well shaft.

[0036] Finally, the aforementioned hoisting device also includes a guide mechanism 4 installed at the bottom of the boom 1, which is used for guidance during hoisting. The guide mechanism 4 includes a mounting block 41 fixedly connected to the bottom of the boom 1. Multiple sets of inclined elastic plates 42 are mounted on the top of the mounting block 41, arranged in a circular array. Through the guiding action of the elastic plates 42, during hoisting, the multiple sets of elastic plates 42 move into the lower shaft, and simultaneously deform, with one end conforming to the inner wall of the lower shaft. This ensures that the boom 1 is approximately positioned in the middle of the lower shaft, thus accurately positioning the upper shaft connected to the inner support mechanism 2. A positioning ring 43 is connected to all the multiple sets of elastic plates 42 to prevent changes in the spacing between them. The guiding mechanism 4 also includes multiple sets of fixing blocks 44, each set of fixing blocks 44 corresponding to the position of the elastic plate 42. A pull rope 45 is connected between the end of the elastic plate 42 away from the mounting block 41 and the fixing block 44. When the moving cylinder 25 moves upward, the fixing block 44 and the pull rope 45 pull one end of the elastic plate 42 to deform, so that one end of the elastic plate 42 moves away from the well shaft, making it easier to remove the device from above the well shaft.

[0037] In this embodiment, before use, the device is connected to the hook of the hoisting equipment via the lifting ring 11 at the top of the boom 1 to complete the overall suspension of the device. After the device is moved to the target hoisting position, the operator rotates the wheel 35 on the outer ring of the connecting cylinder 34, causing the threaded sleeve 33 to rotate synchronously. Since the threaded sleeve 33 is rotatably connected to the top of the moving ring 31 via the L-shaped connecting ring 32, and the threaded sleeve 33 is threadedly connected to the boom 1, the rotating threaded sleeve 33 moves downward along the length of the boom 1, and pushes the moving ring 31 to slide downward synchronously. The moving ring 31 pushes the moving cylinder 25 to slide downward along the outer ring of the boom 1.

[0038] As the movable cylinder 25 moves downward, an outward thrust is applied to the support rod 22 via the hinged adjusting rod 26. Since one end of the support rod 22 is hinged to the fixed cylinder 21, the support rod 22 rotates around the hinge point, and the end away from the fixed cylinder 21 unfolds towards the inner wall of the well shaft. The pressure block 23, hinged to the end of the support rod 22, moves closer to the inner wall of the well shaft as the support rod 22 unfolds, until the rubber pad 24 on the side of the pressure block 23 comes into close contact with the inner wall of the well shaft and undergoes compression deformation. The deformation of the rubber pad 24 further increases the normal pressure against the inner wall of the well shaft, thereby obtaining a frictional force far exceeding that provided by gravity, completely preventing slippage.

[0039] Once the rubber pad 24 reaches the preset compression level against the inner wall of the well casing, the rotating wheel 35 stops rotating. Due to the self-locking characteristic of the threaded connection between the threaded sleeve 33 and the lifting rod 1, the threaded sleeve 33 can stably remain in its current position, thereby creating continuous downward pressure on the moving cylinder 25 through the connecting ring 32, moving ring 31, connecting rod 36, and connecting block 37. This pressure is transmitted to the support rod 22 through the adjusting rod 26, ensuring that the pressure block 23 and the rubber pad 24 remain tightly fitted against the inner wall of the well casing, achieving a stable connection between the inner support mechanism 2 and the well casing, preventing separation from the well casing under lifting load. Simultaneously, after the well casing is lifted, because the lifting force is at the position of the lifting rod 1, the lifting rod 1 will also compress the well casing through multiple sets of support rods 22 as it rises. The support rods 22 undergo slight deformation, further compressing the rubber pad 24, ensuring that the well casing will not fall during the lifting process.

[0040] During hoisting, when the device needs to connect with the lower shaft or adjust the hoisting trajectory, the mounting block 41 at the bottom of the boom 1 moves down with the device, and multiple sets of elastic plates 42 arranged in a ring on the top of the mounting block 41 first enter the lower shaft. Under the constraint of the inner wall of the shaft, the elastic plates 42 undergo adaptive deformation, with the end furthest from the mounting block 41 tightly fitting against the inner wall of the lower shaft. Because the multiple sets of elastic plates 42 are symmetrically distributed and their spacing is kept stable by the positioning ring 43, the fitted elastic plates 42 can generate a central guiding force on the boom 1, positioning the boom 1 approximately at the axis of the lower shaft. The central positioning of the boom 1 drives the fixed cylinder 21 and the inner support mechanism 2 to align synchronously, thereby ensuring precise connection between the upper shaft connected to the inner support mechanism 2 and the lower shaft, improving the hoisting and installation accuracy.

[0041] When the hoisting operation is completed or the device position needs to be adjusted, the rotating wheel 35 is rotated in the reverse direction, causing the connecting cylinder 34 and threaded sleeve 33 to move upward along the lifting rod 1. The threaded sleeve 33 pulls the moving ring 31 upward through the connecting ring 32. The moving ring 31 pulls the connecting block 37 upward through the limiting plate 38 at the bottom of the connecting rod 36, thereby causing the moving cylinder 25 to slide upward along the lifting rod 1. When the moving cylinder 25 moves upward, the adjusting rod 26 pulls the support rod 22 to retract towards the lifting rod 1, and the pressure block 23 and rubber pad 24 separate from the inner wall of the well. At the same time, during the upward movement of the moving cylinder 25, the pulling rope 45 is pulled by the fixing block 44, and the pulling rope 45 moves the elastic plate 42 away from the inner wall of the well. After the inner support mechanism 2 and the guide mechanism 4 are both freed from the well constraint, the device can be removed from the well as a whole through the lifting ring 11.

[0042] The above specific embodiments are merely optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. An internally supported wellbore hoisting device with guiding function, characterized in that, include: A lifting rod (1) is provided with a lifting ring (11) at the top of the lifting rod (1); An inner support mechanism (2) is installed on the outer ring of the boom (1). The inner support mechanism (2) is used to fix the boom (1) to the inner wall of the well. The inner support mechanism (2) includes a fixed cylinder (21) fixedly connected to the outer ring of the boom (1). Multiple sets of support rods (22) are hinged to the outer ring of the fixed cylinder (21). The multiple sets of support rods (22) are arranged in a ring array. A pressure block (23) is hinged to the end of the support rod (22) away from the fixed cylinder (21). A rubber pad (24) is installed on the side of the pressure block (23). A movable cylinder (25) is provided above the fixed cylinder (21). The movable cylinder (25) is slidably sleeved on the outer ring of the boom (1). Adjusting rods (26) are respectively hinged between the multiple sets of support rods (22) and the movable cylinder (25). The positioning component (3) is set on the top of the inner support mechanism (2). The positioning component (3) is used to stabilize the inner support mechanism (2) and prevent it from separating from the well barrel. The positioning component (3) includes a moving ring (31) set above the moving cylinder (25). The moving ring (31) is sleeved on the outer ring of the boom (1). A connecting ring (32) is fixedly connected to the top of the moving ring (31). The connecting ring (32) has an L-shaped cross section. A threaded sleeve (33) is rotatably connected in the connecting ring (32). The threaded sleeve (33) is threadedly connected to the boom (1). A guide mechanism (4) is installed at the bottom of the boom (1) for guiding during hoisting.

2. The internally supported wellbore hoisting device with guiding function according to claim 1, characterized in that, The top of the threaded sleeve (33) is fixedly connected to a connecting cylinder (34), the connecting cylinder (34) is sleeved on the outer ring of the rod (1), and a wheel (35) is installed on the outer ring of the connecting cylinder (34).

3. The internally supported wellbore hoisting device with guiding function according to claim 2, characterized in that, The bottom of the moving ring (31) is fixedly connected to multiple sets of connecting rods (36), and connecting blocks (37) are slidably sleeved on the multiple sets of connecting rods (36). The multiple sets of connecting blocks (37) are all fixedly connected to the outer ring of the moving cylinder (25), and the bottom of the connecting rods (36) is fixedly connected to a limiting plate (38).

4. The internally supported wellbore hoisting device with guiding function according to claim 3, characterized in that, The guide mechanism (4) includes a mounting block (41) fixedly connected to the bottom of the boom (1). Multiple sets of inclined elastic plates (42) are installed on the top of the mounting block (41). The multiple sets of elastic plates (42) are arranged in a ring array. A positioning ring (43) is connected to the multiple sets of elastic plates (42).

5. The internally supported wellbore hoisting device with guiding function according to claim 4, characterized in that, The guiding mechanism (4) also includes multiple sets of fixing blocks (44), each set of fixing blocks (44) and the elastic plate (42) are positioned one-to-one, and a pull rope (45) is connected between the end of the elastic plate (42) away from the mounting block (41) and the fixing block (44).

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