Quickly-assembled well head device provided with multi-way valve

Abstract

The invention belongs to the technical field of wellhead equipment, and discloses a quick-assembly wellhead device provided with a multi-way valve, which comprises a wellhead supporting platform, a blowout prevention mechanism, a positioning mechanism and a multi-way valve body are arranged on the wellhead supporting platform, the positioning mechanism is fixed above the blowout prevention mechanism, a liquid accumulation tank is arranged in the blowout prevention mechanism, and the multi-way valve body is arranged in the liquid accumulation tank. The positioning mechanism comprises upper positioning rods and lower positioning rods, the upper positioning rods and the lower positioning rods are arranged in parallel in the vertical direction and are perpendicular to each other in the overlook view angle, the upper positioning rods and the lower positioning rods can clamp the multi-way valve body between the two sets, and the upper positioning rods and the lower positioning rods are arranged in the vertical direction and can clamp the multi-way valve body between the upper positioning rods and the lower positioning rods. Locking pieces are fixedly mounted at the two ends of the upper positioning rod and the lower positioning rod; according to the multi-way valve mounting device, the multi-way valve is fixed from the two sides through the upper positioning rods and the lower positioning rods in a staggered mode, and therefore mounting of the multi-way valve can be rapidly completed under the condition that the manpower requirement is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of wellhead equipment, and specifically relates to a quick-installation wellhead device with a multi-way valve installed thereon. Background Art

[0002] With the continuous development of industry, the demand for oil by humans in production and life is also increasing. Oil extraction is often carried out in a well-drilling manner. The multi-way valve of the oil extraction equipment is generally installed at the extraction wellhead through a bolt structure. When installing, each group of bolt structures needs to be screwed in separately, resulting in a large amount of manual work, low installation efficiency, and the need for workers to climb onto the installation platform during installation, which is relatively dangerous. In addition, there is often a pressure relief process before oil extraction. In the past, the pressure was directly released and allowed to gush until the pressure relief was completed and then extraction continued. However, this method is too crude. Firstly, it will make the oil extraction environment relatively harsh, causing a waste of resources. At the same time, it is also inconvenient for the secondary extraction of oil later, which is not conducive to long-term development and use. Summary of the Invention

[0003] The technical problem of the present invention is to provide a quick-installation wellhead device with a multi-way valve installed thereon, which can fix the multi-way valve from both sides by the upper positioning rod and the lower positioning rod in an interleaved manner, so as to quickly complete the installation of the multi-way valve with less manpower required.

[0004] To achieve the above object, the present invention provides the following technical solution: A quick-installation wellhead device with a multi-way valve installed thereon, including a wellhead support platform, an anti-blowout mechanism, a positioning mechanism, and a multi-way valve body are arranged on the wellhead support platform. The positioning mechanism is fixed above the anti-blowout mechanism. A liquid accumulation tank is arranged in the anti-blowout mechanism, and the oil generated by the wellhead pressure relief and gushing can accumulate in the liquid accumulation tank. The positioning mechanism includes: An upper positioning rod and a lower positioning rod, the upper positioning rod and the lower positioning rod are arranged parallel to each other up and down and are perpendicular to each other in a top view. There are two groups of both the upper positioning rod and the lower positioning rod, and both can clamp the multi-way valve body between the two groups. Locking members are fixedly installed at both ends of the upper positioning rod and the lower positioning rod; An adjusting component, the lower end of the adjusting component is fixedly connected to the lower end of the anti-blowout mechanism, and the adjusting component can separately adjust the positions of each group of the upper positioning rod and the lower positioning rod.

[0005] As a further solution of the present invention, the blowout prevention mechanism includes an embedding seat, a sealing shell and an upper installation part on the wellhead. The embedding seat is fixed on the upper surface of the wellhead support platform and the lower end is embedded into the wellhead. The sealing shell is fixedly installed on the upper surface of the embedding seat through a screw structure. The upper installation part on the wellhead is fixedly installed at the upper end of the sealing shell. Sealing gasket rings are arranged between the sealing shell and the embedding seat and the upper installation part on the wellhead. An inclined convex block is arranged around the bottom of the sealing shell at the position of the inner wall of the embedding seat. A liquid accumulation groove is arranged between the inclined convex block and the inner wall of the sealing shell. The gushing petroleum can flow into the liquid accumulation groove through the hollow groove in the middle of the inclined convex block.

[0006] As a further solution of the present invention, the blowout prevention mechanism includes an embedding seat, a sealing shell and an upper installation part on the wellhead. The embedding seat is fixed on the upper surface of the wellhead support platform and the lower end is embedded into the wellhead. The sealing shell is fixedly installed on the upper surface of the embedding seat through a screw structure. The upper installation part on the wellhead is fixedly installed at the upper end of the sealing shell. Sealing gasket rings are arranged between the sealing shell and the embedding seat and the upper installation part on the wellhead. An inclined convex block is arranged around the bottom of the sealing shell at the position of the inner wall of the embedding seat. A liquid accumulation groove is arranged between the inclined convex block and the inner wall of the sealing shell. The gushing petroleum can flow into the liquid accumulation groove through the hollow groove in the middle of the inclined convex block.

[0007] As a further solution of the present invention, the adjusting assembly includes side connection seats, lower cross frames, upper cross frames and upper connection seats. There are two groups of the lower cross frames and the upper cross frames. The two groups of lower cross frames are arranged in parallel. The two groups of upper cross frames are both spanned above the two groups of lower cross frames and are arranged in parallel. Lower threaded rods are fixedly installed between the two ends of the parallel upper cross frames. Upper connection seats are fixedly installed at both ends of the upper surface of the upper cross frames. Upper threaded rods are fixedly installed between the upper connection seats above the same upper cross frame. Connecting rods are connected to both ends of the lower surface of the lower cross frame through bolts. The lower ends of the connecting rods are fixedly connected to the side connection seats. The side connection seats are fixedly connected to the embedding seat.

[0008] As a further solution of the present invention, both ends of the lower positioning rod are threadedly connected to the lower threaded rod through threaded sleeves. Both ends of the upper positioning rod are threadedly connected to the upper threaded rod through threaded sleeves. Driving motors are arranged inside the upper positioning rod and the lower positioning rod. The driving motors drive the threaded sleeves to rotate through two groups of adjusting gears that mesh with each other. The two groups of adjusting gears are respectively fixedly installed at the threaded sleeves and the output ends of the driving motors.

[0009] As a further solution of the present invention, the locking member is composed of an oil cylinder and a locking block. The oil cylinder is fixedly installed at the ends of the upper positioning rod and the lower positioning rod. The locking block is fixedly installed at the lower end of the oil cylinder. After the oil cylinder extends, it can drive the locking block to abut against the upper surface of the upper cross frame and the lower cross frame. 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.

[0010] As a further solution of the present invention, an upper connecting seat is provided at the upper end of the installation member on the wellhead. A drill pipe is arranged in the upper connecting seat. The lower end of the drill pipe extends into the well. A sealing block is arranged between the drill pipe and the installation member on the wellhead.

[0011] As a further solution of the present invention, shock absorbers are fixedly installed at the bottoms of the embedding seat and the side connecting seat, and the height of the connecting rod can be adjusted.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In the present invention, by adjusting the positions of the upper positioning rod and the lower positioning rod, the upper positioning rod and the lower positioning rod are abutted against both sides of the multi-way valve body in a small staggered manner, so as to limit the movement of the multi-way valve in multiple directions, thereby fixing the multi-way valve above the oil extraction wellhead, quickly fixing the position of the multi-way valve body, reducing the use of bolts during the installation process, reducing the installation steps of the multi-way valve body, reducing the demand for manpower, avoiding the danger of manpower climbing onto the installation platform, increasing the safety of the installation, and eliminating the drawback that the conventional bolts need to be matched with bolt holes and the installation position cannot be adjusted arbitrarily, improving the flexibility of the installation of the multi-way valve body.

[0013] 2. In the present invention, a sealed liquid accumulation tank is arranged on the wellhead support platform through the installation member on the wellhead and the sealing housing. After drilling, due to the pressure difference, a gush occurs in the well. The gushing medium flows out through the empty groove in the middle of the inclined convex block and is deposited in the liquid accumulation tank after flowing out. The liquid accumulation tank collects the gushing medium, avoiding the pollution of the mining platform by the gushing medium and reducing resource waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural sectional view of the present invention; Figure 3 It is a schematic diagram of the structure of the multi-way valve in the present invention; Figure 4 The structural schematic diagram of the positioning mechanism in the present invention; Figure 5 The structural schematic diagram of the blowout preventer mechanism in the present invention; Figure 6 The structural sectional view of the blowout preventer mechanism in the present invention; Figure 7 The structural schematic diagram of the positioning mechanism from a top-down perspective in the present invention; Figure 8 The structural schematic diagram of the present invention in a disassembled state.

[0016] In the attached drawings, the components represented by each reference numeral are as follows: 1, wellhead support platform; 2, embedding 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 member; 13, upper connecting seat; 14, upper wellhead mounting member; 15, sealing housing; 16, drill pipe; 17, drain pipe; 18, sealing block; 19, liquid accumulation tank; 20, inclined convex block; 21, pressure sensor. Detailed implementation manners

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0018] Please refer to Figures 1 - 8 , the present invention provides a technical solution: a quick-install wellhead device for installing a multi-way valve, including a wellhead support platform 1, a blowout preventer 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 preventer mechanism. A liquid accumulation tank 19 is arranged inside the blowout preventer mechanism, and the oil generated by the wellhead pressure relief 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 up and down and are perpendicular to each other from a top-down perspective. There are two sets of both the upper positioning rod 8 and the lower positioning rod 9, and both can clamp the multi-way valve body 3 between the two sets. Locking members 12 are fixedly installed at both ends of the upper positioning rod 8 and the lower positioning rod 9; An adjustment assembly, the lower end of the adjustment assembly is fixedly connected to the lower end of the blowout preventer mechanism, and the adjustment assembly can separately adjust the positions of each group of the upper positioning rod 8 and the lower positioning rod 9.

[0019] During operation, in the present invention, the multi-way valve body 3 is positioned and fixed by the upper positioning rod 8 and the lower positioning rod 9. The upper positioning rod 8 restricts the left and right movement of the multi-way valve body 3 by approaching the multi-way valve body 3 from both sides (as shown by the two groups of upper positioning rods 8 arranged on the left and right sides of the multi-way valve body 3 in Figure 7 ), and the lower positioning rod 9 restricts the front and back movement of the multi-way valve body 3 by approaching the multi-way valve body 3 from both sides (as shown in Figure 7 ). Among them, the upper positioning rod 8 abuts against the upper side of the multi-way valve body 3, and the lower positioning rod 9 abuts against the lower side of the multi-way valve body 3. The cooperation of the upper positioning rod 8 and the lower positioning rod 9 restricts the up and down movement of the multi-way valve body 3, thereby fixing the position of the multi-way valve body 3, reducing the use of bolts during installation, reducing the installation steps of the multi-way valve body 3, reducing the demand for manpower, avoiding the danger of manpower climbing onto the installation platform, increasing the safety of installation, and eliminating the drawback that the conventional bolts need to cooperate with bolt holes and the installation position cannot be adjusted arbitrarily, improving the flexibility of the installation of the multi-way valve body 3. After adjusting the positions of the upper positioning rod 8 and the lower positioning rod 9, the positions of the upper positioning rod 8 and the lower positioning rod 9 are fixed by the locking member 12.

[0020] As a further solution of the present invention, the blowout prevention mechanism includes an embedded seat 2, a sealing housing 15 and a wellhead upper mounting member 14. The embedded seat 2 is fixed on the upper surface of the wellhead support platform 1 and the lower end is embedded into the wellhead. The sealing housing 15 is fixedly installed on the upper surface of the embedded seat 2 by a screw structure. The wellhead upper mounting member 14 is fixedly installed at the upper end of the sealing housing 15. Sealing gasket rings are provided between the sealing housing 15 and the embedded seat 2 and the wellhead upper mounting member 14. An inclined convex block 20 is arranged around the bottom of the sealing housing 15 at the position of the inner wall of the embedded seat 2. A liquid accumulation groove 19 is provided between the inclined convex block 20 and the inner wall of the sealing housing 15. The gushing petroleum can flow into the liquid accumulation groove 19 through the hollow groove in the middle of the inclined convex block 20.

[0021] During operation, in the present invention, a sealed liquid accumulation groove 19 is provided on the wellhead support platform 1 through the wellhead upper mounting member 14 and the sealing housing 15. After drilling, due to the pressure difference, a gush occurs in the well. The gushing medium flows out through the hollow groove in the middle of the inclined convex block 20 and is deposited in the liquid accumulation groove 19 after flowing out. The liquid accumulation groove 19 collects the gushing medium, avoiding the pollution of the mining platform by the gushing medium and reducing resource waste.

[0022] As a further solution of the present invention, a drain pipe 17 is fixedly installed on one side of the liquid accumulation groove 19. A spherical suction port is fixedly installed at one end of the drain pipe 17 inside the sealing housing 15, and a pressure sensor 21 is fixedly installed at one end of the drain pipe 17 outside the sealing housing 15.

[0023] During operation, in the present invention, the liquid accumulated in the liquid accumulation groove 19 can be discharged through the drain pipe 17 for collection. A control valve is provided in the drain pipe 17 and the control valve is in (asFigure 6 On the left side of the pressure sensor 21 (as shown), the pressure sensor 21 can detect the pressure in the liquid accumulation tank 19, and the condition in the production well can be obtained through the pressure. The spherical suction port is densely provided with through grooves, and the liquid accumulation at the bottom of the liquid accumulation tank 19 can be extracted through the spherical suction port. Air can be input into the liquid accumulation tank 19 in the reverse direction through the drain pipe 17, so as to control the pressure in the liquid accumulation tank and facilitate secondary production.

[0024] As a further solution of the present invention, the adjustment assembly includes a side connection seat 5, a lower cross frame 6, an upper cross frame 7 and an upper connection seat 13. There are two groups of the lower cross frame 6 and the upper cross frame 7. The two groups of lower cross frames 6 are arranged in parallel. The two groups of upper cross frames 7 straddle above the two groups of lower cross frames 6 and are arranged in parallel. Lower threaded rods 10 are fixedly installed between the two ends of the parallel upper cross frames 7. Upper connection seats 13 are fixedly installed at both ends of the upper surface of the upper cross frame 7. Upper threaded rods 11 are fixedly installed between the upper connection seats 13 above the same upper cross frame 7. Connecting rods 4 are connected to both ends of the lower surface of the lower cross frame 6 through bolts. The lower ends of the connecting rods 4 are fixedly connected to the side connection seat 5, and the side connection seat 5 is fixedly connected to the embedding seat 2.

[0025] During operation, in the present invention, the upper cross frame 7 straddles the two groups of lower cross frames 6 and is located at both ends of the lower cross frame 6. A central control rectangular frame is formed by the upper cross frame 7 and the lower cross frame 6. The middle position of this rectangular frame can be used as the installation point of the multi-way valve body, improving the flexibility of the multi-way valve body.

[0026] As a further solution of the present invention, both ends of the lower positioning rod 9 are threadedly connected to the lower threaded rod 10 through threaded sleeves. Both ends of the upper positioning rod 8 are threadedly connected to the upper threaded rod 11 through threaded sleeves. Driving motors are arranged inside the upper positioning rod 8 and the lower positioning rod 9. The driving motors drive the threaded sleeves to rotate through two groups of meshing adjustment gears. The two groups of adjustment gears are respectively fixedly installed at the output ends of the threaded sleeves and the driving motors.

[0027] During operation, in the present invention, the driving motor and the adjustment gears cooperate to drive the threaded sleeves to rotate. The rotation of the threaded sleeves drives the upper positioning rod 8 to move on the upper threaded rod 11, and 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 further adjust the installation position of the multi-way valve body 3.

[0028] As a further solution of the present invention, the locking member 12 is composed of an oil cylinder and a locking block. The oil 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 oil cylinder. After the oil cylinder extends, it can drive the locking block to abut against the upper surfaces 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.

[0029] During operation, after the upper positioning rod 8 and the lower positioning rod 9 move to the designated positions, the locking block is abutted against the magnetic plates of the upper cross frame 7 and the lower cross frame 6 by the extension of the oil cylinder. At the same time of the abutting action of the oil cylinder, the electromagnetic block and the magnetic plate are magnetically attracted to each other.

[0030] As a further solution of the present invention, an upper connecting seat 13 is provided at the upper end of the wellhead upper mounting member 14. A drill pipe 16 is arranged in the upper connecting seat 13. The lower end of the drill pipe 16 extends into the well. A sealing block 18 is arranged between the drill pipe 16 and the wellhead upper mounting member 14.

[0031] During operation, in the present invention, the wellhead upper mounting member 14 and the bottom of the liquid accumulation tank 19 are sealed through the cooperation of the sealing block 18 and the drill pipe 16.

[0032] As a further solution of the present invention, shock absorbers are fixedly installed at the bottoms of the embedding seat 2 and the side connecting seat 5, and the height of the connecting rod 4 can be adjusted.

[0033] During operation, the stability of the wellhead device is increased through the shock absorbers to ensure the smooth operation of the multi-way valve body 3 and the like thereon.

[0034] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A quick-installation wellhead device for installing a multi-way valve, comprising a wellhead support platform (1), characterized in that: An anti-blowout mechanism, a positioning mechanism, and a multi-way valve body (3) are provided on the wellhead support platform (1). The positioning mechanism is fixed above the anti-blowout mechanism. An accumulated liquid tank (19) is provided in the anti-blowout mechanism. The petroleum generated by the wellhead pressure relief and gushing can accumulate in the accumulated liquid 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 vertically and are perpendicular to each other in a top-down view. There are two sets of the upper positioning rod (8) and the lower positioning rod (9) respectively, and both can clamp the multi-way valve body (3) between the two sets. Locking members (12) are fixedly installed at both ends of the upper positioning rod (8) and the lower positioning rod (9); An adjusting assembly. The lower end of the adjusting assembly is fixedly connected to the lower end of the anti-blowout mechanism. The adjusting assembly can individually adjust the positions of each set of the upper positioning rod (8) and the lower positioning rod (9).

2. The quick-installation wellhead device for installing a multi-way valve according to claim 1, wherein: The anti-blowout mechanism includes an embedded seat (2), a sealing housing (15), and a wellhead upper mounting member (14). The embedded seat (2) is fixed on the upper surface of the wellhead support platform (1) and the lower end is embedded into the wellhead. The sealing housing (15) is fixedly installed on the upper surface of the embedded seat (2) through a screw structure. The wellhead upper mounting member (14) is fixedly installed at the upper end of the sealing housing (15). Sealing gasket rings are provided between the sealing housing (15) and the embedded seat (2) and the wellhead upper mounting member (14). An inclined convex block (20) is arranged around the bottom of the sealing housing (15) at the position of the inner wall of the embedded seat (2). An accumulated liquid tank (19) is provided between the inclined convex block (20) and the inner wall of the sealing housing (15). The gushing petroleum can flow into the accumulated liquid tank (19) through the hollow groove in the middle of the inclined convex block (20).

3. The quick-connect 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 accumulated liquid tank (19). A spherical suction port is fixedly installed at one end of the drain pipe (17) inside the sealing housing (15). A pressure sensor (21) is fixedly installed at one end of the drain pipe (17) outside the sealing housing (15).

4. The quick-installation wellhead device for installing a multi-way valve according to claim 3, characterized in that: The adjusting assembly includes side connection seats (5), lower cross frames (6), upper cross frames (7), and upper connection seats (13). There are two sets of the lower cross frames (6) and the upper cross frames (7) respectively. The two sets of lower cross frames (6) are arranged in parallel. The two sets of upper cross frames (7) are both spanned above the two sets of lower cross frames (6) and are arranged in parallel. Lower threaded rods (10) are fixedly installed between both ends of the parallel upper cross frames (7). Upper connection seats (13) are fixedly installed at both ends of the upper surface of the upper cross frames (7). Upper threaded rods (11) are fixedly installed between the upper connection seats (13) above the same upper cross frame (7). Connecting rods (4) are 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 connection seat (5). The side connection seat (5) is fixedly connected to the embedded seat (2).

5. The quick-installation wellhead device for installing a multi-way valve according to claim 4, characterized in that: Both ends of the lower positioning rod (9) are threadedly connected to the lower threaded rod (10) through threaded sleeves. Both ends of the upper positioning rod (8) are threadedly connected to the upper threaded rod (11) through threaded sleeves. Driving motors are arranged inside both the upper positioning rod (8) and the lower positioning rod (9). The driving motors drive the threaded sleeves to rotate through two groups of meshing adjusting gears. The two groups of adjusting gears are respectively fixedly installed on the threaded sleeves and the output ends of the driving motors.

6. The quick-installation wellhead device for installing a multi-way valve according to claim 5, characterized in that: The locking member (12) consists of an oil cylinder and a locking block. The oil 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 oil cylinder. After the oil cylinder extends, it can drive the locking block to abut against the upper surfaces of the upper cross frame (7) and the lower cross frame (6). Magnetic plates are arranged at the middle positions of both the lower cross frame (6) and the upper cross frame (7). The locking block is an electromagnetic block.

7. A quick-installation wellhead device for installing a multi-way valve according to claim 5, characterized in that: An upper connecting seat (13) is arranged at the upper end of the wellhead mounting member (14). A drill pipe (16) is arranged inside the upper connecting seat (13). The lower end of the drill pipe (16) extends into the well. A sealing block (18) is arranged between the drill pipe (16) and the wellhead mounting member (14).

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

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