A quick-mounting wellhead device with a multi-way valve

Abstract

The application discloses a wellhead device technical field, and relates to a quick-mounting wellhead device provided with a multi-way valve, which comprises a wellhead support platform, a blowout prevention mechanism, a positioning mechanism and a multi-way valve body arranged on the wellhead support platform, wherein the positioning mechanism is fixed above the blowout prevention mechanism, the blowout prevention mechanism is internally provided with an accumulated liquid groove, and oil generated by wellhead pressure relief blowout can be accumulated in the accumulated liquid groove; the positioning mechanism comprises upper positioning rods and lower positioning rods, the upper positioning rods and the lower positioning rods are arranged in parallel and are perpendicular to each other in a top view, the upper positioning rods and the lower positioning rods are both provided with two groups of clamping portions for clamping the multi-way valve body therebetween, and the upper positioning rods and the lower positioning rods are both fixedly provided with locking members at two ends thereof; and the lower end of an adjusting assembly is fixedly connected with the lower end of the blowout prevention mechanism, the upper positioning rods and the lower positioning rods are staggered to fix the multi-way valve from two sides, and the installation of the multi-way valve can be quickly completed under the condition of reduced labor demand.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wellhead equipment, in particular to a quick-mounting wellhead device provided with a multi-way valve. BACKGROUND

[0002] With the continuous development of industry, the demand for oil in production and life is also becoming more and more vigorous. Oil exploitation is often similar to well drilling type exploitation and extraction. The multi-way valve of the oil extraction equipment is generally installed on the exploitation wellhead through a bolt structure. Each group of bolt structures needs to be screwed in separately, which is labor-intensive and inefficient. In addition, the installation needs to be manually climbed onto the installation platform, which is dangerous. In addition, oil extraction often has a pressure relief process. In the past, the pressure relief was directly allowed to gush until the pressure relief was completed and then the extraction was continued. However, this method is too rough. On the one hand, it makes the oil exploitation environment relatively poor, causing waste of resources. On the other hand, the secondary extraction of oil is not convenient, which is not conducive to long-term development and use. SUMMARY

[0003] The technical problem of the present application is to provide a quick-mounting wellhead device provided with a multi-way valve, which can fix the multi-way valve from both sides through the upper positioning rod and the lower positioning rod, so as to quickly complete the installation of the multi-way valve under the condition of reducing the demand for manpower.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a quick-mounting wellhead device provided with a multi-way valve, comprising a wellhead support platform, the wellhead support platform is provided with a blowout prevention mechanism, a positioning mechanism and a multi-way valve body, the positioning mechanism is fixed above the blowout prevention mechanism, the blowout prevention mechanism is provided with a liquid accumulation groove, the oil generated by the wellhead pressure relief gushing can be accumulated in the liquid accumulation groove, the positioning mechanism comprises:

[0005] An upper positioning rod and a lower positioning rod, the upper positioning rod and the lower positioning rod are arranged in parallel and perpendicular to each other in the top view, the upper positioning rod and the lower positioning rod are both provided with two groups and can clamp the multi-way valve body between the two groups, the upper positioning rod and the lower positioning rod are both fixedly provided with a locking piece at both ends;

[0006] An adjusting assembly, the lower end of the adjusting assembly is fixedly connected with the lower end of the blowout prevention mechanism, the adjusting assembly can individually adjust the position of each group of the upper positioning rod and the lower positioning rod.

[0007] As a further scheme of the present application, the blowout prevention mechanism comprises an embedding seat, a sealing shell and a wellhead upper mounting member, the embedding seat is fixed on the upper surface of the wellhead support platform and embedded into the wellhead interior at the lower end, the sealing shell is fixedly installed on the upper surface of the embedding seat through screw structure, the wellhead upper mounting member is fixedly installed on the upper end of the sealing shell, sealing gasket rings are arranged between the sealing shell and the embedding seat and the wellhead upper mounting member, inclined protrusions are arranged around the position of the inner wall of the embedding seat at the bottom of the sealing shell, a liquid accumulation groove is arranged between the inclined protrusions and the inner wall of the sealing shell, and the gushing oil can flow into the liquid accumulation groove through the middle slot of the inclined protrusions.

[0008] As a further scheme of the present application, the blowout prevention mechanism comprises an embedding seat, a sealing shell and a wellhead upper mounting member, the embedding seat is fixed on the upper surface of the wellhead support platform and embedded into the wellhead interior at the lower end, the sealing shell is fixedly installed on the upper surface of the embedding seat through screw structure, the wellhead upper mounting member is fixedly installed on the upper end of the sealing shell, sealing gasket rings are arranged between the sealing shell and the embedding seat and the wellhead upper mounting member, inclined protrusions are arranged around the position of the inner wall of the embedding seat at the bottom of the sealing shell, a liquid accumulation groove is arranged between the inclined protrusions and the inner wall of the sealing shell, and the gushing oil can flow into the liquid accumulation groove through the middle slot of the inclined protrusions.

[0009] As a further scheme of the present application, the adjustment assembly comprises side connecting seats, lower cross frames, upper cross frames and upper connecting seats, the lower cross frames and the upper cross frames are both provided in two groups, the two groups of lower cross frames are arranged in parallel, the two groups of upper cross frames are both arranged above the two groups of lower cross frames and arranged in parallel, lower threaded rods are fixedly installed between the two ends of the parallel arranged upper cross frames, upper connecting seats are fixedly installed at the two ends of the upper surfaces of the upper cross frames, upper threaded rods are fixedly installed between the upper connecting seats above the same upper cross frame, connecting rods are connected to the two ends of the lower surfaces of the lower cross frames through bolts, the lower ends of the connecting rods are fixedly connected with the side connecting seats, and the side connecting seats are fixedly connected with the embedding seat.

[0010] As a further scheme of the present application, the two ends of the lower positioning rods are threadedly connected with the lower threaded rods through threaded sleeves, the two ends of the upper positioning rods are threadedly connected with the upper threaded rods through threaded sleeves, drive motors are arranged in the upper positioning rods and the lower positioning rods, the drive motors drive the threaded sleeves to rotate through two groups of adjustment gears meshing with each other, and the two groups of adjustment gears are fixedly installed on the threaded sleeves and the output ends of the drive motors, respectively.

[0011] As a further scheme of the present application, the locking member is composed of an oil cylinder and a locking block, the oil cylinder is fixedly installed at the end of the upper positioning rod and the lower positioning rod, the locking block is fixedly installed at the lower end of the oil cylinder, the oil cylinder can drive the locking block to abut against the upper surface of the upper cross frame and the lower cross frame after being elongated, the middle positions of the lower cross frame and the upper cross frame are both magnetic plates, and the locking block is an electromagnetic block.

[0012] As a further scheme of the present application, the upper end of the wellhead upper mounting member is provided with an upper connecting seat, a drill rod is arranged in the upper connecting seat, the lower end of the drill rod extends into the well, and a sealing block is arranged between the drill rod and the wellhead upper mounting member.

[0013] As a further scheme of the present application, shock absorbers are fixedly installed at the bottom of the embedding seat and the side connecting seat, and the height of the connecting rod can be adjusted.

[0014] Compared with the prior art, the present application has the following beneficial effects:

[0015] 1. In the present application, the positions of the upper positioning rod and the lower positioning rod are adjusted, the upper positioning rod and the lower positioning rod abut against the two sides of the multi-way valve body through the small staggered portions on the upper positioning rod and the lower positioning rod, thereby multi-directionally limiting the movement of the multi-way valve, fixing the multi-way valve above the wellhead of oil exploitation, quickly fixing the position of the multi-way valve body, reducing the use of bolts during installation, reducing the installation steps of the multi-way valve body, reducing the demand for manpower, avoiding the danger of climbing the installation platform by manpower, improving the safety of installation, removing the defects that the bolts need to cooperate with the bolt holes and the installation position cannot be arbitrarily adjusted, and improving the flexibility of the installation of the multi-way valve body.

[0016] 2. In the present application, the sealed liquid accumulation groove is arranged on the wellhead support platform through the wellhead upper mounting member and the sealing shell, after drilling, due to the pressure difference, spouting occurs in the well, the spouting medium flows out through the middle air slot of the inclined protrusion, and then deposits in the liquid accumulation groove, thereby collecting the spouting medium through the liquid accumulation groove, avoiding the pollution of the spouting medium to the exploitation platform, and reducing resource waste. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0018] Figure 1 It is a schematic view of the overall structure of the present application.

[0019] Figure 2 It is a structural sectional view of the present application.

[0020] Figure 3 It is the structure schematic view of the multi-way valve in the application;

[0021] Figure 4 It is the structure schematic view of the positioning mechanism in the application;

[0022] Figure 5 It is the structure schematic view of the blowout prevention mechanism in the application;

[0023] Figure 6 It is the structure sectional view of the blowout prevention mechanism in the application;

[0024] Figure 7 It is the structure schematic view of the positioning mechanism in the application from the top view;

[0025] Figure 8 It is the structure schematic view of the application in the disassembled state.

[0026] In the drawings, the components represented by each reference numeral are as follows:

[0027] 1, wellhead support platform; 2, embedded seat; 3, multi-way valve body; 4, connecting rod; 5, side connecting seat; 6, lower cross frame; 7, upper cross frame; 8, upper positioning rod; 9, lower positioning rod; 10, lower threaded rod; 11, upper threaded rod; 12, locking piece; 13, upper connecting seat; 14, wellhead upper mounting piece; 15, sealing shell; 16, drill pipe; 17, liquid discharge pipe; 18, sealing block; 19, liquid accumulation groove; 20, inclined protrusion; 21, pressure sensor. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only some of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the application.

[0029] Please refer to Figures 1-8 The application provides a technical solution: a quick-mounting wellhead device provided with a multi-way valve, comprising a wellhead support platform 1, a blowout prevention mechanism, a positioning mechanism and a multi-way valve body 3 are arranged on the wellhead support platform 1, the positioning mechanism is fixed above the blowout prevention mechanism, a liquid accumulation groove 19 is arranged in the blowout prevention mechanism, and oil generated by wellhead pressure relief gushing can be accumulated in the liquid accumulation groove 19, the positioning mechanism comprises:

[0030] The upper positioning rod 8 and the lower positioning rod 9 are arranged in parallel and perpendicular to each other in the top view, and both are provided with two groups of positioning rods capable of clamping the multi-way valve body 3 therebetween.

[0031] The adjusting assembly is fixedly connected to the lower end of the blowout prevention mechanism, and is capable of adjusting the position of each group of upper positioning rods 8 and lower positioning rods 9.

[0032] In operation, the multi-way valve body 3 is positioned and fixed by the upper positioning rod 8 and the lower positioning rod 9. Figure 7 The upper positioning rod 8 is arranged on the left and right sides of the multi-way valve body 3, and the lower positioning rod 9 is arranged on the front and back sides of the multi-way valve body 3. Figure 7 The upper positioning rod 8 is arranged on the left and right sides of the multi-way valve body 3, and the lower positioning rod 9 is arranged on the front and back sides of the multi-way valve body 3.

[0033] As a further scheme of the present application, the blowout prevention mechanism comprises an embedding seat 2, a sealing shell 15 and a wellhead upper mounting 14.

[0034] In operation, the sealed liquid accumulation groove 19 is arranged on the wellhead support platform 1 through the wellhead upper mounting member 14 and the sealing shell 15, and after drilling, due to the pressure difference, the well is gushing, the gushing medium flows out through the empty slot in the middle of the inclined protrusion 20, and then deposits in the liquid accumulation groove 19, so that the gushing medium is collected through the liquid accumulation groove 19, the exploitation platform is prevented from being polluted by the gushing medium, and resource waste is reduced.

[0035] As a further scheme of the present application, one side of the liquid accumulation groove 19 is fixedly provided with a liquid discharge pipe 17, one end of the liquid discharge pipe 17 in the sealing shell 15 is fixedly provided with a spherical suction port, and the other end of the liquid discharge pipe 17 outside the sealing shell 15 is fixedly provided with a pressure sensor 21.

[0036] In operation, the liquid in the liquid accumulation groove 19 can be discharged and collected through the liquid discharge pipe 17, the control valve is arranged in the liquid discharge pipe 17 and is located on the left side of the pressure sensor 21 (as shown in the figure), the pressure sensor 21 can detect the pressure in the liquid accumulation groove 19, the condition in the exploitation well can be obtained through the pressure, the through slots are densely arranged on the spherical suction port, the liquid at the bottom of the liquid accumulation groove 19 can be sucked through the spherical suction port, and air can be input into the liquid accumulation groove 19 through the liquid discharge pipe 17, so that the pressure in the liquid accumulation groove is controlled, and secondary exploitation is facilitated. Figure 6

[0037] As a further scheme of the present application, the adjusting assembly includes the side connecting seat 5, the lower cross frame 6, the upper cross frame 7 and the upper connecting seat 13, the lower cross frame 6 and the upper cross frame 7 are both provided with two groups, the two groups of lower cross frames 6 are arranged in parallel, the two groups of upper cross frames 7 are both transversely arranged above the two groups of lower cross frames 6 and are arranged in parallel, the lower threaded rods 10 are fixedly arranged between the two ends of the parallel arranged upper cross frames 7, the upper connecting seats 13 are fixedly arranged at the two ends of the upper surfaces of the upper cross frames 7, the upper threaded rods 11 are fixedly arranged between the upper connecting seats 13 above the same upper cross frame 7, the connecting rods 4 are connected to the lower surfaces of the lower cross frames 6 through bolts, the lower ends of the connecting rods 4 are fixedly connected to the side connecting seat 5, and the side connecting seat 5 is fixedly connected to the embedded seat 2.

[0038] In operation, the upper cross frame 7 is arranged transversely to the two groups of lower cross frames 6 and is arranged at the two ends of the lower cross frames 6, a central control rectangular frame is formed through the upper cross frame 7 and the lower cross frame 6, and the middle positions of the rectangular frame can be used as mounting points of the multi-way valve body, so that the flexibility of the multi-way valve body is improved.

[0039] ​As a further scheme of the present application, the two ends of the lower positioning rod 9 are connected with the lower threaded rod 10 through threaded sleeves, and the two ends of the upper positioning rod 8 are connected with the upper threaded rod 11 through threaded sleeves. Driving motors are arranged in the upper positioning rod 8 and the lower positioning rod 9. The driving motors drive the threaded sleeves to rotate through two sets of adjusting gears which are fixedly installed on the threaded sleeves and the output ends of the driving motors.

[0040] In operation, the threaded sleeves are driven to rotate by the driving motors and the adjusting gears. The rotation of the threaded sleeves drives the upper positioning rod 8 to move on the upper threaded rod 11 and drives the lower positioning rod 9 to move on the lower threaded rod 10, so as to control the positions of the upper positioning rod 8 and the lower positioning rod 9 and adjust the installation position of the multi-way valve body 3.

[0041] As a further scheme of the present application, the locking member 12 is composed of an oil cylinder and a locking block. The oil cylinder is fixedly installed on the end of the upper positioning rod 8 and the lower positioning rod 9, and the locking block is fixedly installed on the lower end of the oil cylinder. When the oil cylinder is elongated, the locking block can be brought into abutment against the upper surface of the upper cross frame 7 and the lower cross frame 6. The middle positions of the lower cross frame 6 and the upper cross frame 7 are magnetic plates, and the locking block is an electromagnetic block.

[0042] In operation, after the upper positioning rod 8 and the lower positioning rod 9 are moved to the specified positions, the locking block is brought into abutment against the magnetic plates of the upper cross frame 7 and the lower cross frame 6 by the elongation of the oil cylinder. At the same time, the electromagnetic block is magnetically attracted to the magnetic plates.

[0043] As a further scheme of the present application, the upper end of the wellhead upper mounting member 14 is provided with an upper connecting seat 13, and a drill rod 16 is arranged in the upper connecting seat 13. The lower end of the drill rod 16 extends into the well, and a sealing block 18 is arranged between the drill rod 16 and the wellhead upper mounting member 14.

[0044] In operation, the wellhead upper mounting member 14 is sealed with the bottom of the liquid accumulation groove 19 by the cooperation of the sealing block 18 and the drill rod 16.

[0045] As a further scheme of the present application, shock absorbers are fixedly installed on the bottoms of the embedding seat 2 and the side connecting seat 5, and the height of the connecting rod 4 can be adjusted.

[0046] In operation, the stability of the wellhead device is increased by the shock absorbers, so as to ensure the smooth operation of the multi-way valve body 3 and the like.

[0047] The above description is only the preferred embodiment of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacements or changes to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A quick-installation wellhead device for installing a multi-way valve, comprising a wellhead support platform (1), characterized in that: The wellhead support platform (1) is provided with a blowout preventer, a positioning mechanism and a multi-way valve body (3). The positioning mechanism is fixed above the blowout preventer. The blowout preventer is provided with a liquid accumulation tank (19). The oil generated by the wellhead depressurization and gushing can accumulate in the liquid accumulation tank (19). The positioning mechanism includes an upper positioning rod (8) and a lower positioning rod (9). The upper positioning rod (8) and the lower positioning rod (9) are arranged parallel to each other and perpendicular to each other from a top view. The upper positioning rod (8) and the lower positioning rod (9) are each provided with two sets and can clamp the multi-way valve body (3) between the two sets. Locking parts (12) are fixedly installed at both ends of the upper positioning rod (8) and the lower positioning rod (9). An adjustment component, the lower end of which is fixedly connected to the lower end of the anti-spray mechanism, the adjustment component being able to individually adjust the position of each set of upper positioning rods (8) and lower positioning rods (9); The adjustment assembly includes a side connecting seat (5), a lower cross frame (6), an upper cross frame (7), and an upper connecting seat (13). The lower cross frame (6) and the upper cross frame (7) are each provided in two sets. The two sets of lower cross frames (6) are arranged in parallel. The two sets of upper cross frames (7) span across the two sets of lower cross frames (6) and are arranged in parallel. A lower threaded rod (10) is fixedly installed between the two ends of the parallel upper cross frame (7). An upper connecting seat (13) is fixedly installed at both ends of the upper surface of the upper cross frame (7). An upper threaded rod (11) is fixedly installed between the upper connecting seats (13) above the same upper cross frame (7). A connecting rod (4) is bolted to both ends of the lower surface of the lower cross frame (6). The lower end of the connecting rod (4) is fixedly connected to the side connecting seat (5). Both ends of the lower positioning rod (9) are threadedly connected to the lower threaded rod (10) through threaded sleeves, and both ends of the upper positioning rod (8) are threadedly connected to the upper threaded rod (11) through threaded sleeves. Both the upper positioning rod (8) and the lower positioning rod (9) are equipped with drive motors. The drive motors drive the threaded sleeves to rotate through two sets of meshing adjusting gears. The two sets of adjusting gears are respectively fixedly installed on the threaded sleeves and the output ends of the drive motors.

2. The quick-installation wellhead device for installing a multi-way valve according to claim 1, characterized in that: The blowout preventer includes an embedded seat (2), a sealing shell (15), and a wellhead mounting component (14). The embedded seat (2) is fixed to the upper surface of the wellhead support platform (1) and its lower end is embedded into the wellhead. The side connecting seat (5) is fixedly connected to the embedded seat (2). The sealing shell (15) is fixedly installed on the upper surface of the embedded seat (2) by a screw structure. The wellhead mounting component (14) is fixedly installed on the upper end of the sealing shell (15). Sealing gaskets are provided between the sealing shell (15), the embedded seat (2), and the wellhead mounting component (14). An inclined protrusion (20) is arranged around the bottom of the sealing shell (15) at the position of the inner wall of the embedded seat (2). A liquid accumulation groove (19) is provided between the inclined protrusion (20) and the inner wall of the sealing shell (15). The gushing oil can flow into the liquid accumulation groove (19) through the hollow groove in the middle of the inclined protrusion (20).

3. A quick-installation wellhead device for installing a multi-way valve according to claim 2, characterized in that: A drain pipe (17) is fixedly installed on one side of the liquid collection tank (19). A spherical suction port is fixedly installed at one end of the drain pipe (17) inside the sealed housing (15). A pressure sensor (21) is fixedly installed at the other end of the drain pipe (17) outside the sealed housing (15).

4. A quick-installation wellhead device for installing a multi-way valve according to claim 1, characterized in that: The locking component (12) consists of a hydraulic cylinder and a locking block. The hydraulic cylinder is fixedly installed at the ends of the upper positioning rod (8) and the lower positioning rod (9). The locking block is fixedly installed at the lower end of the hydraulic cylinder. After the hydraulic cylinder extends, it can drive the locking block to abut against the upper surface of the upper frame (7) and the lower frame (6). The middle positions of the lower frame (6) and the upper frame (7) are both magnetic plates. The locking block is an electromagnetic block.

5. A quick-installation wellhead device for installing a multi-way valve according to claim 2, characterized in that: The upper end of the wellhead mounting component (14) is provided with an upper connecting seat (13), and a drill rod (16) is provided inside the upper connecting seat (13). The lower end of the drill rod (16) extends into the wellhead. A sealing block (18) is provided between the drill rod (16) and the wellhead mounting component (14).

6. A quick-installation wellhead device for installing a multi-way valve according to claim 2, characterized in that: Shock absorbers are fixedly installed at the bottom of both the embedded seat (2) and the side connecting seat (5), and the height of the connecting rod (4) can be adjusted.

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