Combined wellhead blowout preventer

Abstract

The utility model discloses a combined wellhead blowout preventer, include: for installation's main pipe body, the first connecting pipe of fixed mounting in the right end of main pipe body, still include: second connecting pipe, the right side of first connecting pipe is connected with second connecting pipe, and the lower section of second connecting pipe is installed with collection box, and the right side lower extreme of collection box is provided with the discharge gate, the fixed shell is designed in the middle part outside of main pipe body, the left and right sides of fixed shell are provided with first fixed link and second fixed link, and second fixed link is located the front side of first fixed link, and the middle part of first fixed link is installed with connecting rod, the inside of fixed shell is provided with first spring, and the lower extreme of first spring is provided with the protection shell, and the left and right sides upper end of protection shell is provided with third fixed block. This combined wellhead blowout preventer is convenient to the collection processing of the oil of spouting, is convenient to the protection processing of pipeline connecting place, is convenient to the fixed installation of blowout preventer.

Description

Technical Field

[0001] This utility model relates to the field of combined wellhead blowout preventer technology, specifically a combined wellhead blowout preventer. Background Technology

[0002] During well workover operations in oil and water wells, blowout preventers (BOPs) are often installed on the wellhead sealing device to prevent wellhead overflow from damaging the ecological environment. Their main function is to raise the wellhead to increase the static pressure of the fluid column inside the wellbore and recover the workover fluid into a designated container for treatment before it overflows, thus preventing damage to the ecological environment. At the same time, the BOP connection is exposed for a long time, and the connecting parts are prone to rust, making disassembly difficult. Therefore, a protective structure and a modular wellhead BOP that can be fixedly installed were designed.

[0003] Announcement No. CN 219638800 U discloses a combined wellhead blowout preventer, comprising a base plate, a connecting pipe fixedly connected to the upper surface of the base plate, an overflow pipe fixedly connected to the side of the connecting pipe, and a protective device detachably mounted on the upper surface of the base plate to prevent bolts on the base plate from rusting. The protective device includes a connecting ring detachably mounted on the upper surface of the base plate for easy installation, and a rubber gasket fixedly connected to the side of the connecting ring away from the base plate to isolate the base plate shell from the surface bonded to the shell and to increase the sealing effect. Four fixing blocks are fixedly connected to the side of the base plate, and a turntable is rotatably connected to the upper surface of each of the four fixing blocks. A tie rod is slidably connected to the inner wall of the turntable. This invention solves the problem that bolts on the base plate are prone to rust due to rainwater and other factors, making disassembly and maintenance difficult.

[0004] The existing technical solutions described above have the following drawbacks: they are not convenient for collecting and treating the ejected oil, not convenient for protecting the pipe connections, and not convenient for fixing and installing the blowout preventer. Therefore, this utility model provides a combined wellhead blowout preventer to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this utility model is to provide a combined wellhead blowout preventer to solve the problems mentioned in the background art, such as the inconvenience of collecting and treating the ejected oil, the inconvenience of protecting the pipe connection, and the inconvenience of fixing and installing the blowout preventer.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a combined wellhead blowout preventer, comprising: a main body for installation, and a first connecting pipe fixedly installed at the right end of the main body;

[0007] It also includes: a second connecting pipe, the right side of the first connecting pipe is connected to the second connecting pipe, and a collection box is installed on the lower section of the second connecting pipe, and a discharge port is provided at the lower right end of the collection box;

[0008] A fixed shell is designed on the outer side of the middle part of the main body. A first fixed rod and a second fixed rod are provided on the left and right sides of the fixed shell, with the second fixed rod located in front of the first fixed rod. A connecting rod is installed in the middle of the first fixed rod. A first spring is provided inside the fixed shell, and a protective shell is provided at the lower end of the first spring. A third fixed block is provided at the upper end of the left and right sides of the protective shell. A wellhead flange is provided at the lower end of the main body, and mounting grooves are provided on the left, right, front, and rear ends of the wellhead flange. A locking groove is provided on the left and right sides of the mounting groove. A bolt is connected inside the mounting groove, and a second spring and a locking block are provided in the middle of the bolt. The locking blocks are located on the left and right sides of the second spring. A nut is installed at the lower end of the bolt.

[0009] Preferably, the right side of the main tube is fitted with the first connecting tube, the cross-section of the first connecting tube is H-shaped, and the right end of the first connecting tube is fitted with the second connecting tube.

[0010] Preferably, the connecting rod rotates on the outside of the first fixed rod, and the outside of the second fixed rod is engaged with the connecting rod.

[0011] Preferably, the interior of the first spring is fitted to the main body, and the protective shell forms a sliding structure on the outer side of the lower section of the main body.

[0012] Preferably, the interior of the mounting groove is connected to the bolt by a snap-fit ​​mechanism, and the snap-fit ​​block forms a sliding structure inside the bolt.

[0013] Preferably, the left and right sides of the second spring are fitted to the card block, and the inside of the card slot is connected to the card block by a snap-fit ​​method.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the combined wellhead blowout preventer facilitates the collection and treatment of ejected oil, facilitates the protection of pipe connections, and facilitates the fixed installation of the blowout preventer.

[0015] 1. It is equipped with a first connecting pipe, a second connecting pipe and a collection box. When collecting the oil sprayed out by the oil pipe, the oil sprayed out by the main pipe is transported through the first connecting pipe and then through the second connecting pipe, so that the second connecting pipe is transported to the inside of the collection box. The collection box collects the oil inside. Opening the discharge port can discharge the oil inside the collection box, which facilitates the collection and treatment of the sprayed oil.

[0016] 2. Equipped with a first spring and a protective shell, when it is necessary to protect the pipeline connection flange, after the main body and the wellhead flange are connected, the protective shell is locked in place at the flange connection by the elastic force of the first spring, so as to prevent rust on the connection device from affecting its use and facilitate the protection of the pipeline connection.

[0017] 3. Equipped with bolts, clamps, and nuts, to ensure the stability of the blowout preventer, the bolts are inserted through the mounting groove, and after the bolts drive the clamps into the mounting groove, the second spring uses its elasticity to lock the clamps into the groove, thus limiting the pipe position. To ensure the stability of the bolts, a connecting nut is installed at the lower end to reinforce the tight connection between the main pipe and the wellhead flange, facilitating the fixed installation of the blowout preventer. Attached Figure Description

[0018] Figure 1 This is a frontal cross-sectional view of the present invention.

[0019] Figure 2 This is a side view sectional structural diagram of the present invention;

[0020] Figure 3 This is a top view sectional structural diagram of the present invention;

[0021] Figure 4 This utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0022] In the diagram: 1. Main pipe; 2. First connecting pipe; 3. Second connecting pipe; 4. Collection box; 5. Discharge port; 6. Fixing shell; 7. First fixing rod; 8. Connecting rod; 9. Second fixing rod; 10. First spring; 11. Protective shell; 12. Third fixing block; 13. Wellhead flange; 14. Mounting groove; 15. Bolt; 16. Second spring; 17. Locking block; 18. Locking groove; 19. Nut. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4This utility model provides a technical solution: a combined wellhead blowout preventer, comprising a main body 1, a first connecting pipe 2, a second connecting pipe 3, a collection box 4, a discharge port 5, a fixing shell 6, a first fixing rod 7, a connecting rod 8, a second fixing rod 9, a first spring 10, a protective shell 11, a third fixing block 12, a wellhead flange 13, a mounting groove 14, a bolt 15, a second spring 16, a locking block 17, a locking groove 18, and a nut 19.

[0025] When it is necessary to collect the sprayed oil, such as Figure 1 As shown, the right side of the first connecting pipe 2 is connected to the second connecting pipe 3, and the lower section of the second connecting pipe 3 is equipped with a collection box 4. The lower right end of the collection box 4 is provided with a discharge port 5. When the oil well is being developed, the oil inside is sprayed to the upper end of the main pipe 1. At this time, the main pipe 1 is transported to the right first connecting pipe 2, the first connecting pipe 2 is transported to the second connecting pipe 3, and the second connecting pipe 3 finally transports the oil to the inside of the collection box 4 for overall collection. Finally, the discharge port 5 is opened to discharge the oil. This is the method of oil collection.

[0026] When using this combined wellhead blowout preventer, such as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, a first fixing rod 7 and a second fixing rod 9 are provided on the left and right sides of the fixed shell 6, with the second fixing rod 9 located in front of the first fixing rod 7. A connecting rod 8 is installed in the middle of the first fixing rod 7. A first spring 10 is provided inside the fixed shell 6, and a protective shell 11 is provided at the lower end of the first spring 10. A third fixing block 12 is provided at the upper end of the left and right sides of the protective shell 11. A wellhead flange 13 is provided at the lower end of the main pipe body 1, and mounting grooves 14 are provided at the left, right, front, and rear ends of the wellhead flange 13. A retaining groove 18 is provided on the left and right sides of the mounting groove 14. A bolt 15 is connected inside the mounting groove 14, and a second spring 16 and a retaining block 17 are provided in the middle of the bolt 15. The retaining block 17 is located on the left and right sides of the second spring 16. A nut 19 is installed at the lower end of the bolt 15. First, the lower end of the main pipe body 1 is attached to the upper end of the wellhead flange 13. Furthermore, the lower left and right front sides of the main pipe body 1 are provided with holes and slots, so that the holes and slots are aligned with the mounting slot 14. Then, the bolt 15 is inserted through the interior of the mounting slot 14. When the bolt 15 drives the locking block 17 into the interior, the locking block 17 is engaged in the locking groove 18 provided in the inner wall of the mounting slot 14 by the elastic force of the second spring 16, thereby fixing the bolt 15 in position. In order to prevent the bolt 15 from loosening, a nut 19 is installed at the lower end of the bolt 15, so that the main pipe body 1 and the wellhead flange 13 can be fixedly connected. At this time, the connecting rod 8 is slid to the left and right sides, so that the connecting rod 8 is disengaged from the locking of the second fixing rod 9. At this time, the third fixing block 12 is no longer limited by the connecting rod 8, and the protective shell 11 slides down by the first spring 10, thereby fitting against the connection between the main pipe body 1 and the wellhead flange 13, thereby protecting the flange connection. This is the usage method of this combined wellhead blowout preventer.

[0027] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A combined wellhead blowout preventer, comprising: a main body (1) for installation, and a first connecting pipe (2) fixedly installed at the right end of the main body (1). Its features are, Also includes: The second connecting pipe (3) is connected to the right side of the first connecting pipe (2), and a collection box (4) is installed in the lower section of the second connecting pipe (3), and a discharge port (5) is provided at the lower right end of the collection box (4). A fixed shell (6) is designed on the outer side of the middle part of the main body (1). A first fixing rod (7) and a second fixing rod (9) are provided on the left and right sides of the fixed shell (6). The second fixing rod (9) is located in front of the first fixing rod (7). A connecting rod (8) is installed in the middle of the first fixing rod (7). A first spring (10) is provided inside the fixed shell (6). A protective shell (11) is provided at the lower end of the first spring (10). A third fixing block is provided at the upper end of the left and right sides of the protective shell (11). 12) The lower end of the main body (1) is provided with a wellhead flange (13), and the left and right front and rear ends of the wellhead flange (13) are provided with mounting grooves (14), and the left and right sides of the mounting groove (14) are provided with slots (18). The mounting groove (14) is connected with a bolt (15), and the middle part of the bolt (15) is provided with a second spring (16) and a locking block (17), and the locking block (17) is located on the left and right sides of the second spring (16). The lower end of the bolt (15) is provided with a nut (19).

2. The combined wellhead blowout preventer according to claim 1, characterized in that: The right side of the main body (1) is fitted with the first connecting pipe (2), and the cross-section of the first connecting pipe (2) is H-shaped. The right end of the first connecting pipe (2) is fitted with the second connecting pipe (3).

3. A combined wellhead blowout preventer according to claim 1, characterized in that: The connecting rod (8) rotates on the outside of the first fixed rod (7), and the outside of the second fixed rod (9) is connected to the connecting rod (8) by a snap-fitting method.

4. A combined wellhead blowout preventer according to claim 1, characterized in that: The interior of the first spring (10) is fitted to the main body (1), and the protective shell (11) forms a sliding structure on the lower outer side of the main body (1).

5. A combined wellhead blowout preventer according to claim 1, characterized in that: The interior of the mounting groove (14) is connected to the bolt (15) by a snap-fit ​​method, and the locking block (17) forms a sliding structure inside the bolt (15).

6. A combined wellhead blowout preventer according to claim 1, characterized in that: The second spring (16) is set in a close fit with the card block (17) on both sides, and the inside of the card slot (18) is connected to the card block (17) by a snap-fit ​​method.

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