A fracturing wellhead device that is less prone to tilting

Abstract

The application discloses a fracturing wellhead device which is not easy to incline, and relates to the technical field of oil extraction. The wellhead device body is composed of a Christmas tree, a flat valve, a tubing head and a casing head. The support assembly comprises a plurality of vertical rods which are symmetrically and uniformly arranged on both sides of the wellhead device body. Since the position of the wellhead device body is fixed and cannot be moved in the horizontal direction, the wellhead device body can only incline. Therefore, when the wellhead device body is about to incline, the first support plate and the second support plate are limited in the fixed double horizontal plates, so that the angle deviation of the first support plate and the second support plate is limited. Therefore, the connecting joint of the wellhead device body can be auxiliary fixed under extreme pressure working conditions, the connecting strength of the connecting part is improved, the wellhead device body is prevented from inclining after long-time use, and the purpose of avoiding safety hazards is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fracturing wellhead, in particular to a fracturing wellhead device not prone to tilting. BACKGROUND

[0002] The fracturing wellhead device is a high-pressure control assembly specially designed for hydraulic fracturing operation. It is composed of high-strength flanges, valves (especially inverted main valves and wing valves), and four-way valves with multiple high-pressure fluid inlets (side ports). Its core function is to withstand and control the huge pressure generated during fracturing fluid injection, provide a safe and reliable channel for the manifold connected to the fracturing pump truck, and have key multiple safety barriers, which is the key wellhead equipment to ensure the safe and smooth operation of fracturing.

[0003] When the fracturing wellhead device is in use, it may cause accidental channeling or blowout due to the failure of high-pressure sealing in the pipe string caused by improper operation, disrepair or external factors. At this time, if the fracturing wellhead device tilts, the high-pressure fluid will be ejected along the tilting direction at high speed, rather than vertically upward, which may impact nearby operators and cause safety accidents.

[0004] After long-term use of the fracturing wellhead device, it may tilt due to factors such as foundation settlement or instability, structural deformation caused by super-high pressure operation, and huge lateral force impact, which may cause safety hazards to the equipment. Among them, under extreme pressure conditions (especially close to or exceeding the design limit of the equipment), the wellhead device body or some key connection parts on it may undergo permanent plastic deformation. This deformation is often asymmetric, which may cause the device to tilt and damage, and has certain limitations. SUMMARY

[0005] The present application relates to the technical field of fracturing wellhead, in particular to a fracturing wellhead device not prone to tilting.

[0006] The present application relates to the technical field of fracturing wellhead, in particular to a fracturing wellhead device not prone to tilting.

[0007] The utility model provides a kind of not easy to incline fracturing wellhead device, including wellhead device body;Wellhead device body is made of Christmas tree, flat valve, tubing head and casing head;It further includes the support assembly for preventing wellhead device body from inclining;Support assembly includes multiple vertical rods that are symmetrically and uniformly arranged on both sides of wellhead device body;It further includes double cross plates that are connected with vertical rods by connecting pieces;Double cross plates are provided with insertion holes corresponding to the position of each vertical rod;Connecting assembly is arranged between Christmas tree and uppermost flat valve, between lowermost flat valve and tubing head, and between tubing head and casing head;Connecting assembly includes stud bolt, and the lower part of stud bolt is provided with a limit part formed integrally;Connecting assembly further includes first support plate arranged on the upper part of uppermost flat valve and the lower part of lowermost flat valve, and second support plate arranged on the lower part of tubing head;The first support plate and the second support plate are connected with wellhead device body by stud bolt and second nut.

[0008] Preferably, anti-skid lines are formed on the outer side of the vertical rod;The connecting piece includes a first connecting block and a second connecting block that can be buckled with each other;The first connecting block and the second connecting block are jointly provided with a vertical round hole in the vertical direction;The first connecting block and the second connecting block are jointly provided with two horizontal square holes in the horizontal direction;The second connecting block is provided with a plurality of anti-skid protrusions corresponding to the position inside the vertical round hole.

[0009] Preferably, a plurality of insertion rods are fixed to one side of the first connecting block close to the second connecting block, and a butterfly nut is detachably arranged at the outer end of the insertion rod;The second connecting block is provided with a corresponding through hole corresponding to the position of the insertion rod, and the insertion rod is inserted into the through hole after the first connecting block and the second connecting block are buckled, and the outer end is locked and fixed by the butterfly nut.

[0010] Preferably, the first connecting block and the second connecting block are buckled and then sleeved on the vertical rod through the vertical round hole;The first connecting block and the second connecting block are buckled and then sleeved on the double cross plate through the horizontal square hole;After the first connecting block and the second connecting block are buckled, the anti-skid protrusions engage with the anti-skid lines to fix the double cross plate at a specified position on the vertical rod.

[0011] Preferably, a plurality of insertion rods are fixed to one side of the first connecting block close to the second connecting block, and a butterfly nut is detachably arranged at the outer end of the insertion rod;The second connecting block is provided with a corresponding through hole corresponding to the position of the insertion rod, and the insertion rod is inserted into the through hole after the first connecting block and the second connecting block are buckled, and the outer end is locked and fixed by the butterfly nut.

[0012] Preferably, the first connecting block and the second connecting block are buckled and then sleeved on the vertical rod through the vertical round hole;The first connecting block and the second connecting block are buckled and then sleeved on the double cross plate through the horizontal square hole;After the first connecting block and the second connecting block are buckled, the anti-skid protrusions engage with the anti-skid lines to fix the double cross plate at a specified position on the vertical rod.

[0013] Preferably, the double cross plates are provided with three groups, and are located at the same height of the two first support plates and one second support plate, and the two ends of the first support plate and the second support plate are respectively inserted into the middle of the corresponding double cross plate.

[0014] Preferably, the stand rod is provided with a connecting plate above the connecting piece, the two ends of the connecting plate are fixedly connected with a sleeve, and the sleeve is sleeved on the stand rod to connect the stand rods on both sides of the wellhead device body.

[0015] Preferably, the fracturing wellhead device comprises the following erection steps:

[0016] S1, the taper head at the lower end of the stand rod is used to insert the stand rod into the two sides of the wellhead device body, and each stand rod is located at the middle position between the adjacent wellhead device bodies;

[0017] S2, the connecting piece is used to fix the three double cross plates at the specified positions on the stand rod, and the connecting plate is used to connect the stand rods on both sides of the wellhead device body with each other during the fixing;

[0018] S3, the sleeve head is connected with the wellhead first, and then the tubing head is placed on the upper part of the sleeve head, and after the sleeve head is coaxial with the tubing head, the connection and fixation are realized by using the double-end threaded rod and the first nut; then the second support plate is sleeved on the lower part of the tubing head along the length direction of the double cross plate, and then the two ends of the second support plate are rotated by 90° to make the two ends enter the middle of the double cross plate, and finally the fixation of the second support plate is realized by using the cooperation of the double-end threaded rod, the second nut and the bolt hole;

[0019] S4, the flat valve is placed on the tubing head, and after the flat valve is coaxial with the tubing head, the connection and fixation of the flat valve and the tubing head are realized by using the cooperation of the double-end threaded rod and the flange threaded hole; then one of the first support plates is sleeved on the lower part of the lowermost flat valve in the same way as the second support plate, and the fixation of the first support plate is realized by using the cooperation of the double-end threaded rod, the second nut and the bolt hole;

[0020] S5, the Christmas tree is placed on the uppermost flat valve, and after the Christmas tree is coaxial with the flat valve, the connection and fixation of the Christmas tree and the flat valve are realized in the same way as in the S4 step, and the fixation of the other first support plate is realized.

[0021] Preferably, in the S2 step, the first connecting block is inserted into the double cross plate from the inner side of the double cross plate, the second connecting block is inserted into the double cross plate from the outer side of the double cross plate, and the buckling of the first connecting block and the second connecting block is simultaneously completed, so that the anti-skid convex blocks are engaged with the anti-skid patterns, and finally the butterfly nut is used for fixation.

[0022] The beneficial effects of the present application are as follows:

[0023] 1. The present application supports each main connecting node of the wellhead device body by two first support plates and a second support plate respectively. Since the position of the wellhead device body is fixed and cannot move horizontally, only tilting can occur. Therefore, when the wellhead device body is about to tilt, the first support plate and the second support plate are limited within the fixed double cross plates, so that the angle deviation of the first support plate and the second support plate is limited, thereby assisting in fixing the connecting nodes of the wellhead device body under extreme pressure conditions, improving the connection strength of the connecting parts, avoiding tilting of the wellhead device body after long-term use, and achieving the purpose of avoiding safety hazards.

[0024] 2. After the entire support assembly, connecting assembly and wellhead device body are erected, the vertical rods, double cross plates and connecting plates jointly form a cage structure, which not only improves the connection stability of the double cross plates, effectively limits the first support plate and the second support plate, and enhances the anti-tilting ability of the wellhead device body, but also encloses the wellhead device body inside to prevent it from being tilted due to a huge lateral force impact. In addition, since the vertical rods, double cross plates and connecting plates form a cage structure, the vertical rods are connected to the foundation at multiple places, which can effectively resist the factors of foundation settlement or instability, and then support the two ends of the first support plate and the second support plate, indirectly supporting the wellhead device body, thereby achieving the anti-tilting ability of the wellhead device body.

[0025] 3. Since the Christmas tree, flat valve and tubing head in the wellhead device body are supported and fixed by the first support plate or the second support plate, if one of the Christmas tree, flat valve, tubing head and casing head needs to be repaired, it can be removed alone without removing the other parts. Whether it is subsequent installation or disassembly, the convenience is improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] The present application will be further described below with reference to the accompanying drawings.

[0027] Figure 1 is a schematic diagram of the overall structure of the present application;

[0028] Figure 2 is a schematic diagram of the cooperation structure of the wellhead device body and the connecting assembly in the present application;

[0029] Figure 3 is a schematic diagram of the structure of the wellhead device body in the present application;

[0030] Figure 4 is a schematic diagram of part of the connecting assembly in the present application;

[0031] Figure 5 is another schematic diagram of part of the connecting assembly in the present application;

[0032] Figure 6 is the structural schematic diagram of the support assembly in the present application;

[0033] Figure 7 is Figure 6 is the local enlarged view of A in the figure;

[0034] Figure 8 is the structural schematic diagram of the vertical rod in the present application;

[0035] Figure 9 is the structural schematic diagram of the double cross plate in the present application;

[0036] Figure 10 is the structural schematic diagram of the connecting piece in the present application;

[0037] Figure 11 is the structural schematic diagram of the first connecting block in the present application;

[0038] Figure 12 is the structural schematic diagram of the second connecting block in the present application;

[0039] Figure 13 is the structural schematic diagram of the connecting plate in the present application.

[0040] In the figure: 1, wellhead device body; 11, Christmas tree; 12, flat valve; 13, tubing head; 14, casing head; 15, connecting assembly; 151, double-end threaded rod; 152, first nut; 153, second nut; 154, first support plate; 155, second support plate; 156, nail hole; 157, cutout; 2, support assembly; 21, vertical rod; 211, anti-skid pattern; 212, taper head; 22, double cross plate; 221, insertion hole; 23, connecting piece; 231, first connecting block; 232, second connecting block; 233, vertical round hole; 234, horizontal square hole; 24, connecting plate; 241, sleeve; 2311, insertion rod; 2312, butterfly nut; 2321, through hole; 2322, anti-skid protrusion. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0042] Please refer to Figures 1-3As shown in the figure, a kind of not easy to incline fracturing wellhead device, including wellhead device body 1 and the support assembly 2 for preventing wellhead device body 1 from inclining;Wellhead device body 1 includes Christmas tree 11, flat valve 12, tubing head 13 and casing head 14 connected by flange from top to bottom, wherein casing head 14 is connected with wellhead. Because the specific model, connection mode and connection structure of wellhead device body 1 are prior art, this embodiment will not be described here.

[0043] Please refer again to Figures 2-5 As shown in the figure, the embodiment is different from prior art: connecting assembly 15 is arranged between Christmas tree 11 and the uppermost flat valve 12, between the lowermost flat valve 12 and tubing head 13, and between tubing head 13 and casing head 14, which is used for assembling and connecting Christmas tree 11, flat valve 12, tubing head 13 and casing head 14 in wellhead device body 1, and is used for preventing wellhead device body 1 from inclining by connecting assembly 15 and support assembly 2.

[0044] Please refer again to Figure 4 And Figure 5 As shown in the figure, connecting assembly 15 includes double-end threaded rod 151 between Christmas tree 11 and the uppermost flat valve 12, between the lowermost flat valve 12 and tubing head 13, and between tubing head 13 and casing head 14, which is provided with a limiting part integrally formed in the lower part of double-end threaded rod 151, and the limiting part is preferably but not limited to nut-shaped structure in Figure 4 , such as circular;Christmas tree 11 and the uppermost flat valve 12, the lowermost flat valve 12 and tubing head 13 are connected by double-end threaded rod 151 directly cooperating with flange threaded hole provided thereon, and tubing head 13 and casing head 14 are connected by double-end threaded rod 151 cooperating with first nut 152.

[0045] As shown in the figure Figures 2-3 Connecting assembly 15 further includes first support plate 154 on the upper part of the uppermost flat valve 12 and the lower part of the lowermost flat valve 12, and second support plate 155 on the lower part of tubing head 13;First support plate 154 and second support plate 155 are connected with wellhead device body 1 by double-end threaded rod 151 cooperating with second nut 153.

[0046] As shown in the figure Figure 5As shown, the first support plate 154 and the second support plate 155 are each provided with a plurality of bolt holes 156 corresponding to the flange holes, which are used to cooperate with the stud 151 and the second nut 153; the first support plate 154 and the second support plate 155 are also provided with a cutout 157; the inner side of the cutout 157 is provided with a semicircular structure matching the upper part of the uppermost flat valve 12, the lower part of the lowermost flat valve 12 and the lower part of the tubing head 13, so as to facilitate the installation of the first support plate 154 and the second support plate 155 on the wellhead device body 1.

[0047] Please refer again to Figure 1 and Figures 6-9 As shown, the support assembly 2 includes a plurality of vertical rods 21 symmetrically and evenly arranged on both sides of the wellhead device body 1; the outer side of the vertical rod 21 is provided with an anti-skid pattern 211; the lower end of the vertical rod 21 is provided with a tapered head 212; the support assembly 2 further includes a double cross plate 22 connected with the vertical rod 21 by a connecting piece 23; the double cross plate 22 is provided with an insertion hole 221 corresponding to the position of each vertical rod 21, and the diameter of the insertion hole 221 is equal to the diameter of the vertical rod 21; the double cross plate 22 is provided with three groups, and is located at the same height position of the two first support plates 154 and the second support plate 155, and the two ends of the first support plate 154 and the second support plate 155 are respectively inserted into the middle of the corresponding double cross plate 22.

[0048] Please refer again to Figure 6 and Figures 10-12 As shown, the first support plate 154 and the second support plate 155 are fixed to the specified height position on the vertical rod 21 by the connecting piece 23. Specifically, the connecting piece 23 includes a first connecting block 231 and a second connecting block 232 which are buckled to each other; the first connecting block 231 and the second connecting block 232 are commonly provided with a vertical circular hole 233 in the vertical direction, and the diameter of the vertical circular hole 233 is equal to the diameter of the vertical rod 21, and the first connecting block 231 and the second connecting block 232 are buckled and then sleeved on the vertical rod 21 through the vertical circular hole 233; the first connecting block 231 and the second connecting block 232 are commonly provided with two horizontal square holes 234 in the horizontal direction, and the caliber of the horizontal square hole 234 is equal to the size of the cross section of the double cross plate 22, and the first connecting block 231 and the second connecting block 232 are buckled and then sleeved on the double cross plate 22 through the horizontal square hole 234.

[0049] The first connecting block 231 is fixed with a plurality of insertion rods 2311 on one side close to the second connecting block 232, the outer end of the insertion rod 2311 is detachably provided with a wing nut 2312, the second connecting block 232 is provided with a corresponding through hole 2321 corresponding to the position of the insertion rod 2311, the insertion rod 2311 is inserted into the through hole 2321 after the first connecting block 231 and the second connecting block 232 are buckled, and the outer end is locked and fixed through the wing nut 2312; the second connecting block 232 is provided with a plurality of anti-skid protrusions 2322 corresponding to the position inside the vertical circular hole 233, the anti-skid protrusions 2322 and the anti-skid lines 211 are matched with each other, the anti-skid protrusions 2322 and the anti-skid lines 211 are engaged after the first connecting block 231 and the second connecting block 232 are buckled with each other, and then the double horizontal plate 22 is fixed at the specified position on the vertical rod 21.

[0050] Please refer to Figure 6 and Figure 13 again, further, the vertical rod 21 is provided with a connecting plate 24 above the connecting piece 23, the connecting plate 24 is fixed with a sleeve 241 at both ends, the hole diameter of the sleeve 241 is equal to the diameter of the vertical rod 21, and the sleeve 241 is sleeved on the vertical rod 21, which is used to connect the vertical rods 21 on both sides of the wellhead device body 1.

[0051] In order to facilitate the understanding of the above technical scheme of the present application, the working principle or operation mode of the present application in the actual process is described in detail as follows:

[0052] First, the support assembly 2 is erected, and the specific steps are as follows:

[0053] A1, the vertical rod 21 is inserted into the two sides of the wellhead device body 1 by using the taper head 212 at the lower end of the vertical rod 21, and each vertical rod 21 is located at the middle position between the adjacent wellhead device bodies 1.

[0054] A2, the three double horizontal plates 22 are fixed on the vertical rod 21 at the specified position by using the connecting piece 23, and the vertical rods 21 on both sides of the wellhead device body 1 are connected by using the connecting plate 24.

[0055] In the step A2, when the double horizontal plate 22 is fixed on the vertical rod 21 by using the connecting piece 23, the first connecting block 231 is inserted into the double horizontal plate 22 from the inner side of the double horizontal plate 22 (i.e. the side close to the wellhead device body 1), the second connecting block 232 is inserted into the double horizontal plate 22 from the outer side of the double horizontal plate 22, and the buckling of the first connecting block 231 and the second connecting block 232 is completed synchronously, so that the anti-skid protrusions 2322 are engaged with the anti-skid lines 211, and finally the wing nut 2312 is used for fixation, and the reverse operation can be performed for disassembly, the fixation mode is simple, no tool is needed, and the use is convenient.

[0056] Then the wellhead device body 1 is erected, and the specific steps are as follows:

[0057] B1, first connect the casing head 14 with the wellhead, then place the tubing head 13 on the upper part of the casing head 14, and after coaxial, use the double-end threaded rod 151 to cooperate with the first nut 152 to realize the connection and fixation. Then, the second support plate 155 is sleeved on the lower part of the tubing head 13 along the length direction of the double cross plate 22 from the cutout 157, and then the second support plate 155 is rotated 90° as shown by the arrow to make the two ends of the second support plate 155 enter the middle of the double cross plate 22, and finally the cooperation of the double-end threaded rod 151, the second nut 153 and the nail hole 156 is used to realize the fixation of the second support plate 155. Figure 1 B1, first connect the casing head 14 with the wellhead, then place the tubing head 13 on the upper part of the casing head 14, and after coaxial, use the double-end threaded rod 151 to cooperate with the first nut 152 to realize the connection and fixation. Then, the second support plate 155 is sleeved on the lower part of the tubing head 13 along the length direction of the double cross plate 22 from the cutout 157, and then the second support plate 155 is rotated 90° as shown by the arrow to make the two ends of the second support plate 155 enter the middle of the double cross plate 22, and finally the cooperation of the double-end threaded rod 151, the second nut 153 and the nail hole 156 is used to realize the fixation of the second support plate 155.

[0058] B2, then place the flat valve 12 on the tubing head 13, and after coaxial, use the double-end threaded rod 151 to cooperate with the flange threaded hole to realize the connection and fixation of the flat valve 12 and the tubing head 13. Then, in the same way as the second support plate 155, one of the first support plates 154 is sleeved on the lower part of the lowermost flat valve 12, and the cooperation of the double-end threaded rod 151, the second nut 153 and the nail hole 156 is used to realize the fixation of the first support plate 154.

[0059] B3, finally, place the Christmas tree 11 on the uppermost flat valve 12, and after coaxial, realize the connection and fixation of the Christmas tree 11 and the flat valve 12 in the same way as in step S4, and fix the other first support plate 154.

[0060] In the above steps, the fracturing wellhead device provided by the application supports each main connection node of the wellhead device body 1 by two first support plates 154 and one second support plate 155. Since the position of the wellhead device body 1 is fixed and cannot move in the horizontal direction, only inclination can occur, so when the wellhead device body 1 is about to incline, the first support plate 154 and the second support plate 155 are limited to the inside of the fixed double cross plate 22, so that the angle deviation of the first support plate 154 and the second support plate 155 is limited, thereby being able to assist in fixing the connection nodes of the wellhead device body 1 under extreme pressure working conditions, improving the connection strength of the connection parts, avoiding the inclination of the wellhead device body 1 after long-term use, and achieving the purpose of avoiding safety hazards.

[0061] Wherein, since the vertical rods 21, the double horizontal plates 22 and the connecting plates 24 jointly constitute a cage structure after the whole support assembly 2, the connecting assembly 15 and the wellhead device body 1 are erected, not only the connecting stability of the double horizontal plates 22 is improved, the first support plate 154 and the second support plate 155 can be effectively limited, the anti-inclination ability of the wellhead device body 1 is enhanced, but also the wellhead device body 1 is surrounded inside, the wellhead device body 1 is prevented from being inclined due to the impact of huge lateral force, in addition, since the vertical rods 21, the double horizontal plates 22 and the connecting plates 24 constitute the cage structure, the vertical rods 21 are connected with the foundation at multiple positions, the foundation settlement or unstable factors can be effectively resisted, then the two ends of the first support plate 154 and the second support plate 155 are supported, the wellhead device body 1 is indirectly supported, the anti-inclination ability of the wellhead device body 1 is achieved.

[0062] In addition, since the Christmas tree 11, the flat valve 12 and the tubing head 13 in the wellhead device body 1 are all supported and fixed through the first support plate 154 or the second support plate 155, if one of the Christmas tree 11, the flat valve 12, the tubing head 13 and the casing head 14 needs to be repaired, it can be taken down alone, without taking down other parts at the same time, whether it is subsequent installation or disassembly, the convenience is improved.

[0063] It should be noted that in this document, such as the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment.

[0064] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application.

Claims

1. A method for erecting a fracturing wellhead device that is not prone to tilting, comprising a wellhead device body (1); the wellhead device body (1) is composed of a Christmas tree (11), a flat valve (12), a tubing head (13), and a casing head (14); characterized in that: It also includes a support assembly (2) to prevent the wellhead device body (1) from tilting; the support assembly (2) includes multiple uprights (21) symmetrically and evenly distributed on both sides of the wellhead device body (1); it also includes a double horizontal plate (22) that is connected to the uprights (21) by a connector (23); the double horizontal plate (22) is provided with a hole (221) corresponding to the position of each upright (21). A connecting assembly (15) is provided between the tree (11) and the uppermost flat valve (12), between the lowermost flat valve (12) and the tubing head (13), and between the tubing head (13) and the casing head (14). The connecting assembly (15) includes a double-threaded rod (151), the lower part of which is provided with an integrally formed limiting part. The connecting assembly (15) also includes a first support plate (154) located above the uppermost flat valve (12) and below the lowermost flat valve (12), and a second support plate (155) located below the tubing head (13). The first support plate (154) and the second support plate (155) are connected to the wellhead device body (1) by the double-threaded rod (151) and the second nut (153). The outer side of the upright (21) is provided with anti-slip texture (211); the connector (23) includes a first connecting block (231) and a second connecting block (232) that can be interlocked; the first connecting block (231) and the second connecting block (232) are provided with a vertical round hole (233) in the vertical direction; the first connecting block (231) and the second connecting block (232) are provided with two horizontal square holes (234) in the horizontal direction; the second connecting block (232) is provided with a plurality of anti-slip protrusions (2322) corresponding to the position inside the vertical round hole (233); The first support plate (154) and the second support plate (155) are provided with nail holes (156) that correspond one-to-one with the flange holes; the first support plate (154) and the second support plate (155) are also provided with cuts (157), the inner side of which is respectively a semi-circular structure that fits the upper part of the uppermost flat valve (12), the lower part of the lowermost flat valve (12) and the lower part of the oil pipe head (13); The erection method includes the following steps: S1. Using the cone (212) at the lower end of the upright (21), the upright (21) is inserted on both sides of the wellhead device body (1), and each upright (21) is located in the middle between adjacent wellhead device bodies (1). S2. Use connectors (23) to fix three double horizontal plates (22) to the designated positions on the uprights (21), and use connecting plates (24) to connect the uprights (21) on both sides of the wellhead device body (1). S3. First, connect the casing head (14) to the wellhead, then place the tubing head (13) on the upper part of the casing head (14). After they are coaxial, use the double-ended threaded rod (151) and the first nut (152) to achieve connection and fixation. Then, put the second support plate (155) along the length of the double horizontal plate (22) from the cut (157) on the lower part of the tubing head (13), then rotate the second support plate (155) 90° so that the two ends of the second support plate (155) enter the middle of the double horizontal plate (22). Finally, use the double-ended threaded rod (151), the second nut (153) and the nail hole (156) to fix the second support plate (155). S4. Place the flat plate valve (12) on the oil pipe head (13), and after they are coaxial, use the double-ended threaded rod (151) and the flange threaded hole to connect and fix the flat plate valve (12) and the oil pipe head (13); then, in the same way as the second support plate (155), put one of the first support plates (154) on the lower part of the flat plate valve (12), and use the double-ended threaded rod (151), the second nut (153) and the nail hole (156) to fix the first support plate (154); S5. Place the tree (11) on the top plate valve (12), and after it is coaxial, use the same method as in step S4 to connect and fix the tree (11) and the plate valve (12), and fix the other first support plate (154).

2. The method for erecting a non-tilting fracturing wellhead device according to claim 1, characterized in that: The first connecting block (231) has multiple insert rods (2311) fixedly connected to the side of the first connecting block (232) near the second connecting block (232). The outer end of the insert rod (2311) is detachably provided with a wing nut (2312). The second connecting block (232) has a corresponding through hole (2321) at the position of the insert rod (2311). After the first connecting block (231) and the second connecting block (232) are fastened together, the insert rod (2311) is inserted into the through hole (2321), and the outer end is locked and fixed by the wing nut (2312).

3. The method for erecting a non-tilting fracturing wellhead device according to claim 1, characterized in that: After the first connecting block (231) and the second connecting block (232) are fastened together, they are fitted onto the upright (21) through the vertical round hole (233); after the first connecting block (231) and the second connecting block (232) are fastened together, they are fitted onto the double horizontal plate (22) through the horizontal square hole (234); after the first connecting block (231) and the second connecting block (232) are fastened together, the anti-slip protrusion (2322) and the anti-slip texture (211) engage to fix the double horizontal plate (22) at the designated position on the upright (21).

4. The method for erecting a non-tilting fracturing wellhead device according to claim 1, characterized in that: The oil well (11) is connected to the uppermost flat valve (12), and the lowermost flat valve (12) is connected to the tubing head (13) by a double-ended threaded rod (151) directly engaging with the flange threaded hole on it. The tubing head (13) is connected to the casing head (14) by a double-ended threaded rod (151) engaging with the first nut (152).

5. The method for erecting a non-tilting fracturing wellhead device according to claim 1, characterized in that: The double horizontal plates (22) are provided in three sets, and are respectively located at the same height as the two first support plates (154) and the second support plate (155), and the two ends of the first support plate (154) and the second support plate (155) are respectively inserted in the middle of the corresponding double horizontal plates (22).

6. The method for erecting a non-tilting fracturing wellhead device according to claim 1, characterized in that: Each of the uprights (21) is provided with a connecting plate (24) above the connector (23). The two ends of the connecting plate (24) are fixed with a sleeve (241), and the sleeve (241) is sleeved on the upright (21) to connect the uprights (21) on both sides of the wellhead device body (1).

7. The method for erecting a non-tilting fracturing wellhead device according to claim 1, characterized in that: In S2, the first connecting block (231) is inserted into the double horizontal plate (22) from the inside, and the second connecting block (232) is inserted into the double horizontal plate (22) from the outside. The first connecting block (231) and the second connecting block (232) are engaged simultaneously, so that the anti-slip protrusion (2322) engages with the anti-slip texture (211). Finally, the butterfly nut (2312) is used for fixing.

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