Platform well mouth support device, platform well and construction method

Abstract

The invention relates to the technical field of platform well mouths, in particular to a platform well mouth support device. Comprising a cross-shaped rod set and an annular square frame, the cross-shaped rod set comprises four supporting rods arranged in the circumferential direction, the roots of the four supporting rods are connected with one another, and the outer side ends of the supporting rods are connected with connecting parts; a mounting base is arranged at the bottom of the annular square frame, an inner groove with an opening in one side is formed between the mounting base and the bottom face of the annular square frame, the connecting part can horizontally enter the inner groove from the opening side, a plug pin is connected between the connecting part and the mounting base, and the plug pin is vertically arranged and located on the inner side of the annular square frame. According to the platform well mouth support device, the cross rod set is installed in the inner groove from the side face through rotation. The cross rod group is vertically limited through the mounting seat and the bottom surface of the annular square frame; and the cross-shaped rod group is limited in the horizontal direction through the plug pins, so that the cross-shaped rod group can be conveniently taken down by personnel, and construction personnel can conveniently go down to a well for maintenance.

Description

Technical Field

[0001] This invention relates to the field of platform wellhead technology, and particularly to a platform wellhead support device, a platform well, and a construction method thereof. Background Technology

[0002] like Figure 1 As shown, the common protective structure for existing fire hydrant platform well openings is a cross-shaped fixed bracket, with a stone cover concealing the well opening. However, for cross-shaped fixed brackets with small well openings, there is a problem that it is impossible for personnel to enter. The cross and outer frame must be disassembled, and construction workers must enter the well for repairs before reinstallation, which is extremely inconvenient. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology, which requires construction personnel to disassemble the cross and outer frame before reinstalling them when going down into the well for maintenance, which is inconvenient for construction. This invention provides a platform wellhead support device and its construction method, as well as a platform well.

[0004] In a first aspect, the present invention provides a platform wellhead support device, comprising: a crossbar assembly and an annular square frame, the crossbar assembly comprising four circumferentially arranged support rods, the roots of the four support rods being interconnected, and a connecting portion being connected to the outer end of each support rod; the annular square frame having a mounting base at its bottom, the mounting base and the bottom surface of the annular square frame forming an inner groove with an opening on one side, the connecting portion being able to horizontally enter the inner groove from the opening side, and a pin being connected between the connecting portion and the mounting base, the pin being vertically arranged and located on the inner side of the annular square frame.

[0005] The present invention discloses a platform wellhead support device, which, based on the existing cross-fixed support technology, is designed as a mounting base and a cross rod assembly. The mounting base has an inner groove with one side opening between it and the bottom surface of the annular square frame. The cross rod assembly is installed into the inner groove from the side by rotation. The mounting base and the bottom surface of the annular square frame provide vertical positioning for the cross rod assembly. Simultaneously, a pin connects the connecting part to the mounting base. The pin is vertically positioned to limit the horizontal positioning of the cross rod assembly. Furthermore, the pin is located inside the annular square frame, facilitating installation and removal of the pin, and consequently, facilitating the removal of the cross rod assembly, and thus enabling construction personnel to descend into the well for maintenance.

[0006] Preferably, two opposing support rods of the four support rods form a first rod, and the other two support rods are connected to form a second rod. The middle part of the first rod and the middle part of the second rod are horizontally rotatably connected by a hinge shaft, and the top surface of the first rod is flush with the top surface of the second rod.

[0007] With the above settings, the horizontal angle between the first and second rods can be changed within a certain range (e.g., 0-30°), making the cross rod assembly structure more flexible and easier to disassemble.

[0008] Preferably, the first rod has a horizontal through hole in the middle, and the second rod passes through the through hole.

[0009] Preferably, the mounting base includes an L-shaped plate, which includes a vertical plate and a horizontal plate connected together. The top of the vertical plate is connected to the bottom surface of the annular square frame, and the L-shaped plate and the bottom surface of the annular square frame form an inner groove with an opening on one side.

[0010] Preferably, the horizontal plate is provided with a first hole, the connecting part includes a second hole, the first hole and the second hole can be coaxially arranged, and the pin passes through the first hole and the second hole.

[0011] Preferably, the annular square frame is formed by connecting four angle steels end to end in sequence.

[0012] Preferably, a support pad is provided at the corner of the annular square frame, and the bottom of the support pad is flush with the bottom of the mounting base.

[0013] Preferably, the annular square frame has a threaded rod protruding downward from its top surface, and the support pad has a threaded slot at its top, with the threaded rod threadedly engaging with the threaded slot.

[0014] Preferably, the mounting base protrudes 20mm-40mm from the inner side of the annular square frame.

[0015] Secondly, the present invention also provides a platform well, including a well cavity, wherein the well opening of the well cavity is provided with the platform well opening support device of the present invention, and the platform well opening support device is covered with a cover plate.

[0016] The platform well described in this invention, by providing a platform wellhead support device at the wellhead position of the well cavity, enables construction personnel to easily remove the crossbar assembly, thereby facilitating their entry into the well for maintenance.

[0017] Thirdly, the present invention also provides a construction method for a platform wellhead support device described in the present invention, comprising the following steps:

[0018] S1. Lower the crossbar assembly so that it corresponds to the height of the inner groove; S2. Rotate the cross bar assembly toward the inner groove so that the connecting part enters the inner groove, and the annular square frame is vertically limited to the connecting part; S3. A connecting pin is used to connect the connecting part to the mounting base.

[0019] In the construction method described in this invention, the connecting part enters the inner groove horizontally from the opening side of the inner groove. The inner groove is located near the bottom of the annular square frame structure. The lateral cantilever length is only half the width of the connecting part, which is much smaller than the distance of the inner groove protruding from the inner side of the annular square frame. At the same time, it can make the stress position between the cross rod assembly and the mounting base closer to the annular square frame, thereby making the deformation resistance better when people step on it later.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention provides a platform wellhead support device. Based on the existing cross-shaped fixed support, it is designed as a mounting base and a cross rod assembly. The mounting base has an inner groove with one side opening between it and the bottom surface of the annular square frame. The cross rod assembly is installed into the inner groove from the side by rotation. The mounting base and the bottom surface of the annular square frame provide vertical positioning for the cross rod assembly. Simultaneously, a pin connects the connecting part to the mounting base. The pin is vertically positioned to limit the cross rod assembly horizontally. Furthermore, the pin is located inside the annular square frame, facilitating installation and removal of the pin, and consequently, facilitating the removal of the cross rod assembly, and thus enabling construction personnel to descend into the well for maintenance.

[0021] 2. The present invention provides a platform well, wherein the platform wellhead support device of the present invention is provided at the wellhead position of the well cavity, which enables construction personnel to easily remove the cross rod assembly, thereby facilitating construction personnel to go down into the well for maintenance.

[0022] 3. In the construction method of the present invention, the connecting part enters the inner groove horizontally from the opening side of the inner groove. The inner groove is located near the bottom of the annular square frame structure. The lateral cantilever length is only half the width of the connecting part, which is much smaller than the distance of the inner groove protruding from the inner side of the annular square frame. At the same time, it can make the stress position between the cross rod assembly and the mounting base closer to the annular square frame, thereby making the deformation resistance better when people step on it later. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the installation of a cross-shaped fixed bracket at the wellhead of a platform in the existing technology.

[0024] Figure 2 This is a top view schematic diagram of a platform wellhead support device according to the present invention.

[0025] Figure 3 This is a three-dimensional schematic diagram (one direction) of a platform wellhead support device according to the present invention.

[0026] Figure 4 Appendix of the present invention Figure 3 Enlarged schematic diagram of part A in the middle.

[0027] Figure 5 This is a three-dimensional schematic diagram (from another direction) of a platform wellhead support device according to the present invention.

[0028] Figure 6 This is a front view schematic diagram of a platform wellhead support device according to the present invention.

[0029] Figure 7 Appendix of the present invention Figure 6 Enlarged schematic diagram of section B in the middle.

[0030] Figure 8 This is a schematic diagram showing the installation and rotation direction of a platform wellhead support device according to the present invention.

[0031] Figure 9 This is a schematic diagram of the rotational connection between the first rod and the second rod of the present invention.

[0032] Figure 10 This is a schematic diagram illustrating the fit between the support pad and the threaded rod of the present invention.

[0033] Figure 11 This is a three-dimensional schematic diagram of the mounting base of the present invention.

[0034] Figure 12 This is a structural schematic diagram of a platform well according to this application.

[0035] Marked in the image: 1-Cross rod assembly, 2-Ring square frame, 3-Mounting base, 4-Inner groove, 5-Pin, 6-Well cavity, 7-Cover plate, 8-Fire hydrant, 11-Support rod, 12-Connecting part, 13-Second rod, 14-First rod, 15-Hinge shaft, 21-Support pad, 22-Threaded rod, 23-Threaded slot hole, 31-First hole, 32-Vertical plate, 33-Horizontal plate. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to specific embodiments. However, this should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0037] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of the present invention is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the present invention or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a particular device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on the present invention.

[0038] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but that it can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0039] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0040] Furthermore, in the description of the embodiments of the present invention, "several", "more than", and "a number of" represent at least two. The number can be any number, such as 2, 3, 4, 5, 6, 7, 8, or 9, and can even exceed nine.

[0041] Furthermore, in the description of the technical solution of this invention, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "provided with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0042] Example 1 like Figure 2-11 As shown, this embodiment provides a platform wellhead support device, including a crossbar assembly 1, a connecting part 12, and an annular square frame 2.

[0043] In one or more embodiments, the cross rod assembly 1 includes four circumferentially arranged support rods 11, the bases of the four support rods 11 being connected to each other, and the outer ends of the support rods 11 being connected to connecting portions 12; an annular square frame 2, the bottom of the annular square frame 2 being provided with a mounting base 3, the mounting base 3 and the bottom surface of the annular square frame 2 forming an inner groove 4 with an opening on one side, the connecting portion 12 being able to horizontally enter the inner groove 4 from the opening side, and a pin 5 being connected between the connecting portion 12 and the mounting base 3, the pin 5 being vertically arranged, and the pin 5 being located on the inner side of the annular square frame 2.

[0044] The cross rod assembly 1 can pass through the square cavity 24 of the annular square frame 2. During installation, the cross rod assembly 1 first passes through the square cavity 24 and then rotates, so that the connecting part 12 enters the inner groove 4 horizontally from the opening side.

[0045] The present invention discloses a platform wellhead support device, which, based on the existing cross-fixed support, is designed as a mounting base 3 and a cross rod assembly 1. The mounting base 3 has an inner groove 4 with one side opening between it and the bottom surface of the annular square frame 2. The cross rod assembly 1 is installed into the inner groove 4 from the side by rotation. The mounting base 3 and the bottom surface of the annular square frame 2 vertically limit the cross rod assembly 1. Simultaneously, a pin 5 connects the connecting part 12 to the mounting base 3. The pin 5 is vertically positioned to limit the cross rod assembly 1 horizontally. Furthermore, the pin 5 is located inside the annular square frame 2, facilitating installation and removal of the pin, and consequently, facilitating the removal of the cross rod assembly 1, and enabling construction personnel to descend into the well for maintenance.

[0046] During the innovation process of this invention, the researchers also considered a technical solution with an inner groove 4 having a top opening and the inner groove 4 protruding inward from the annular square frame 2. During installation, the connecting part 12 falls directly into the inner groove 4 from above. However, during the experiment, since the inner groove 4 needs to protrude inward from the inner side of the annular square frame 2 by at least 80-100mm, the inner groove 4 in the above solution is located at the cantilever end of the mounting base 3. After the connecting part 12 is vertically connected to the inner groove 4, the resistance to vertical deformation is weak during later operation. Long-term exposure to the pressure of pedestrians stepping on it can easily cause the structure of the inner groove 4 to deform downward, resulting in the need to continuously repair the structure of the inner groove 4.

[0047] The platform wellhead support device described in this invention can effectively improve the above problems. Specifically, the connecting part 12 enters the inner groove 4 horizontally from the opening side. The inner groove 4 is located near the bottom of the annular square frame 2 structure. The lateral cantilever length is only half the width of the connecting part 12, which is much smaller than the distance of the inner groove 4 protruding from the inner side of the annular square frame 2 in the above solution. At the same time, it can make the force position between the cross rod group 1 and the mounting base 3 closer to the annular square frame 2, thereby making the deformation resistance better when people step on it later.

[0048] The top surface of the pin 5 is equal to or lower than the top surface of the cross rod assembly 1.

[0049] like Figure 9 As shown, in one or more embodiments, two opposing support rods 11 of the four support rods 11 form a first rod 14, and the other two support rods 11 are connected to form a second rod 13. The middle part of the first rod 14 and the middle part of the second rod 13 are horizontally rotatably connected by a hinge shaft 15, and the top surface of the first rod 14 is flush with the top surface of the second rod 13.

[0050] With the above settings, the horizontal angle between the first rod 14 and the second rod 13 can be changed within a certain range (e.g., 0-30°), making the cross rod assembly 1 structure more flexible and easier to disassemble.

[0051] In one or more embodiments, the first rod 14 has a horizontal through hole in the middle, and the second rod 13 passes through the through hole.

[0052] like Figure 11 As shown, in one or more embodiments, the mounting base 3 includes an L-shaped plate, the L-shaped plate includes a vertical plate 32 and a horizontal plate 33 connected together, the top of the vertical plate 32 is connected to the bottom surface of the annular square frame 2, and the L-shaped plate and the bottom surface of the annular square frame 2 form an inner groove 4 with an opening on one side.

[0053] In one or more embodiments, the horizontal plate 33 is provided with a first hole 31, the connecting part 12 includes a second hole 16, the first hole 31 and the second hole 16 can be coaxially arranged, and the pin 5 passes through the first hole 31 and the second hole 16.

[0054] In one or more embodiments, the annular square frame 2 is formed by connecting four angle steels end to end in sequence.

[0055] In one or more embodiments, a support pad 21 is provided at the corner of the annular square frame 2, and the bottom of the support pad 21 is flush with the bottom of the mounting base 3.

[0056] like Figure 10As shown, in one or more embodiments, the annular square frame 2 has a threaded rod 22 protruding downward from the top surface, and the support pad 21 has a threaded slot 23 on the top surface, with the threaded rod 22 threadedly engaged with the threaded slot 23.

[0057] In one or more embodiments, the mounting base 3 protrudes 20mm-40mm from the inner side of the annular square frame 2.

[0058] Example 2 like Figure 12 As shown, this embodiment provides a platform well, including a well cavity 6, a fire hydrant 8 installed in the well cavity 6, a platform well opening support device as described in this invention at the well opening position of the well cavity 6, and a cover plate 7 covering the platform well opening support device.

[0059] The platform well of the present invention, by providing the platform wellhead support device of the present invention at the wellhead position of the well cavity, enables construction personnel to easily remove the cross rod assembly 1, thereby facilitating construction personnel to go down into the well for maintenance.

[0060] Specifically, cover plate 7 is made of iron or stone.

[0061] Example 3 like Figure 2-12 As shown, this embodiment provides a construction method for installing a platform wellhead support device as described in Embodiment 1, comprising the following steps: S1. Lower the crossbar assembly 1 so that it corresponds to the height of the inner groove 4; S2. Rotate the cross rod assembly 1 toward the inner groove 4 so that the connecting part 12 enters the inner groove 4, and the annular square frame 2 is vertically limited to the connecting part 12; S3. A pin 5 is connected between the connecting part 12 and the mounting base 3.

[0062] In the construction method described in this embodiment, the connecting part 12 enters the inner groove 4 horizontally from the opening side of the inner groove 4. The inner groove 4 is located near the lower part of the annular square frame 2 structure. The lateral cantilever length is only half the width of the connecting part 12, which is much smaller than the distance of the inner groove 4 protruding from the inner side of the annular square frame 2. At the same time, it can make the force-bearing position between the cross rod group 1 and the mounting base 3 closer to the annular square frame 2, thereby making the deformation resistance better when people step on it later.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A platform wellhead support device, characterized in that, The device includes a crossbar assembly (1) and a ring-shaped square frame (2). The crossbar assembly (1) includes four circumferentially arranged support rods (11), the roots of which are connected to each other, and the outer ends of the support rods (11) are connected to a connecting part (12). The ring-shaped square frame (2) has a mounting base (3) at its bottom. An inner groove (4) with an opening on one side is formed between the mounting base (3) and the bottom surface of the ring-shaped square frame (2). The connecting part (12) can enter the inner groove (4) horizontally from the opening side. A pin (5) is connected between the connecting part (12) and the mounting base (3). The pin (5) is vertically arranged and located on the inner side of the ring-shaped square frame (2).

2. The platform wellhead support device according to claim 1, characterized in that, Two of the four support rods (11) form the first rod (14), and the other two support rods (11) are connected to form the second rod (13). The middle part of the first rod (14) and the middle part of the second rod (13) are horizontally rotatably connected by a hinge shaft (15). The top surface of the first rod (14) is flush with the top surface of the second rod (13).

3. A platform wellhead support device according to claim 2, characterized in that, The first rod (14) has a horizontal through hole in the middle, and the second rod (13) passes through the through hole.

4. A platform wellhead support device according to claim 1, characterized in that, The mounting base (3) includes an L-shaped plate, which includes a vertical plate (32) and a horizontal plate (33) connected together. The top of the vertical plate (32) is connected to the bottom surface of the annular square frame (2), and the L-shaped plate and the bottom surface of the annular square frame (2) form an inner groove (4) with an opening on one side.

5. A platform wellhead support device according to claim 4, characterized in that, The horizontal plate (33) is provided with a first hole (31), and the connecting part (12) includes a second hole (16). The first hole (31) and the second hole (16) can be coaxially arranged, and the pin (5) passes through the first hole (31) and the second hole (16).

6. A platform wellhead support device according to any one of claims 1-5, characterized in that, A support pad (21) is provided at the corner of the annular square frame (2), and the bottom of the support pad (21) is flush with the bottom of the mounting base (3).

7. A platform wellhead support device according to claim 6, characterized in that, The annular square frame (2) has a threaded rod (22) protruding downwards on its top surface, and the support pad (21) has a threaded slot (23) on its top surface. The threaded rod (22) is threadedly engaged with the threaded slot (23).

8. A platform wellhead support device according to claim 7, characterized in that, The mounting base (3) protrudes 20mm-40mm from the inner side of the annular square frame (2).

9. A platform well, characterized in that, The well includes a well cavity (6), and the well opening of the well cavity (6) is provided with a platform well opening support device as described in any one of claims 1-8, and the platform well opening support device is covered with a cover plate (7).

10. A construction method for a platform wellhead support device as described in any one of claims 1-8, characterized in that, Includes the following steps: S1. Lower the cross bar assembly (1) so that it corresponds to the height of the inner groove (4); S2. Rotate the cross bar assembly (1) toward the inner groove (4) so ​​that the connecting part (12) enters the inner groove (4) and the annular square frame (2) is vertically limited to the connecting part (12); S3. A pin (5) is connected between the connecting part (12) and the mounting base (3).

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