CN210178320U

CN210178320U - Blowout preventer for drilling and repairing oil field

Info

Publication number: CN210178320U
Application number: CN201921218862.6U
Authority: CN
Inventors: Zhihua Pang; 庞志华
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2020-03-24
Anticipated expiration: 2029-07-31

Abstract

The utility model discloses an oil field drilling and workover blowout preventer, which comprises a shell, wherein the inner wall of the shell is fixedly connected with a fixed plate, a chute is arranged in the fixed plate, a first fixed block is welded on the upper part of the inner wall of the shell, a sleeve is welded on the outer wall of the first fixed block, a pull rod is slidably connected in the sleeve and runs through the sleeve, and a fixed plug is fixedly connected to the bottom of a connecting plate; when taking place the blowout, oil pressure in the oil well can promote fixed stopper rebound, fixed stopper promotes second fixed block rebound through the connecting plate, through the third fixed block, the cooperation of gyro wheel and spout, the second fixed block drives the pull rod rebound, make fixed stopper and stopper laminating, make the fixed column insert the inside of first recess, sealed pad will laminate with the inner wall of casing, seal up the inside of casing, thereby prevent oil blowout, avoided causing the potential safety hazard and to the pollution of surrounding environment to the producer, the waste of the energy has been reduced.

Description

Blowout preventer for drilling and repairing oil field

Technical Field

The utility model relates to an oil field bores well workover technical field, specifically is an oil field bores well workover blowout preventer.

Background

The sum of oil and gas reservoirs in the same oil and gas production area under the control of a single geological structure factor. A field may have one or more reservoirs; the oil field is mainly an oil reservoir in the same area, and the gas field is mainly a gas reservoir; according to the geological factors in the area for controlling oil and gas production, oil and gas fields are divided into 3 types: a tectonic oil and gas field; the area of oil and gas production is controlled by single constructional factors, such as folds and faults; a stratigraphic field, an oil bearing area controlled by stratigraphic factors on a regional anticline or monoclinic structural background; a composite oil and gas field; in the oil and gas production area, the control is not controlled by a single structure or stratum factor, but by oil and gas fields controlled by various geological factors, during the operation of the oil field, the flowing stratum fluid can cause the pressure of a well head to rise, so that natural gas or crude oil leakage frequently occurs, and even kick and blowout phenomena occur, thereby bringing serious potential safety accidents to workover production, not only causing the waste of energy, but also causing serious pollution to the surrounding environment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an oil field bores well workover blowout preventer to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the blowout preventer comprises a shell, wherein a fixed plate is fixedly connected to the inner wall of the shell, a chute is formed in the fixed plate, a first fixed block is welded to the upper portion of the inner wall of the shell, a sleeve is welded to the outer wall of the first fixed block, a pull rod is slidably connected to the interior of the sleeve and penetrates through the sleeve, a second fixed block is fixedly connected to one end, away from the sleeve, of the pull rod, a connecting plate is screwed to the bottom of the second fixed block, a fixed plug is fixedly connected to the bottom of the connecting plate, third fixed blocks are fixedly connected to the outer walls of the two sides of the second fixed block, a roller is slidably connected to the interior of the third fixed block and is slidably connected with the chute, a second groove is formed in the interior of the fixed plug, a fixed rod is welded to one end, close to the sleeve, of, one end of the tension spring is connected with the upper surface of the shell, and the upper part of the shell is in threaded connection with the upper cover.

As further preferable in the present technical solution: the bottom of the first fixed block is fixedly connected with a spring.

As further preferable in the present technical solution: and a sealing gasket is adhered to the side of the outer wall of the lower part of the second fixing block, and the bottom of the sealing gasket is adhered to the upper surface of the connecting plate.

As further preferable in the present technical solution: the outer wall both sides fixedly connected with fixed column of fixed stopper, the welding of the bottom both sides of casing has the stopper, the stopper with the inside of casing all be provided with the first recess of fixed column looks adaptation.

As further preferable in the present technical solution: a second groove is formed in the bottom of the fixing plug, and a through hole is formed in the fixing plug located in the second groove.

Compared with the prior art, the beneficial effects of the utility model are that: when taking place the blowout, oil pressure in the oil well can promote fixed stopper rebound, fixed stopper promotes second fixed block rebound through the connecting plate, through the third fixed block, the cooperation of gyro wheel and spout, the second fixed block drives the pull rod rebound, make fixed stopper and stopper laminating, make the fixed column insert the inside of first recess, sealed pad will laminate with the inner wall of casing, seal up the inside of casing, thereby prevent oil blowout, avoided causing the potential safety hazard and to the pollution of surrounding environment to the producer, the waste of the energy has been reduced.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the internal structure of the fixing plug of the present invention;

fig. 3 is an enlarged schematic structural diagram of the area a of fig. 1 according to the present invention.

In the figure: 1. an upper cover; 2. a first fixed block; 3. a spring; 4. a fixing plate; 5. a housing; 6. a first groove; 7. a fixed plug; 8. a through hole; 9. a limiting block; 10. a sleeve; 11. a tension spring; 12. fixing the rod; 13. a second groove; 14. a rubber pad; 15. fixing a column; 16. a connecting plate; 17. a second fixed block; 18. a gasket; 19. a chute; 20. a roller; 21. a third fixed block; 23. a pull rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-3, the present invention provides a technical solution: the blowout preventer for drilling and repairing of the oil field comprises a shell 5, wherein a fixed plate 4 is fixedly connected to the inner wall of the shell 5, a sliding groove 19 is formed in the fixed plate 4, a first fixed block 2 is welded to the upper portion of the inner wall of the shell 5, a sleeve 10 is welded to the outer wall of the first fixed block 2, a pull rod 23 is slidably connected to the inside of the sleeve 10, the pull rod 23 penetrates through the sleeve 10, a second fixed block 17 is fixedly connected to one end, away from the sleeve 10, of the pull rod 23, a connecting plate 16 is connected to the bottom of the second fixed block 17 through a screw, a fixed plug 7 is fixedly connected to the bottom of the connecting plate 16, third fixed blocks 21 are fixedly connected to the outer walls of the two sides of the second fixed block 17, rollers 20 are slidably connected to the inside of the third fixed blocks 21, the rollers 20 are slidably connected with, the one end welding that the pull rod 23 is close to sleeve 10 has dead lever 12, the both ends of dead lever 12 all are connected with extension spring 11, the one end of extension spring 11 is connected with the upper surface of casing 5, the upper portion threaded connection of casing 5 has upper cover 1.

In this embodiment, specifically: the bottom of the first fixing block 2 is fixedly connected with a spring 3, and through the arrangement of the spring 3, the pressure in the oil well is reduced, so that the second fixing block 17 moves downwards through the elastic potential energy of the spring 3.

In this embodiment, specifically: the sealing gasket 18 is pasted on the lower outer wall side of the second fixing block 17, the bottom of the sealing gasket 18 is pasted on the upper surface of the connecting plate 16, and the sealing effect between the second fixing block 17 and the inner wall of the shell 5 is better by arranging the sealing gasket 18.

In this embodiment, specifically: the outer wall of the fixed plug 7 is sleeved with the rubber pad 14, the fixed plug 7 is in a conical shape, and by arranging the fixed plug 7, when oil pressure rises, the fixed plug 7 pushes upwards, so that the fixed plug 7 and the limiting block 9 are attached and sealed.

In this embodiment, specifically: the outer wall both sides fixedly connected with fixed column 15 of fixed stopper 7, the welding of the bottom both sides of casing 5 has stopper 9, stopper 9 all be provided with the first recess 6 of fixed column 15 looks adaptation with the inside of casing 5, when fixed stopper 7 receives pressure, the upwards slip makes fixed stopper 7 closely laminate with stopper 9, and the position that the restriction fixed stopper 7 rises then fixed column 15 inserts the inside of first recess 6, fixes fixed stopper 7.

In this embodiment, specifically: second recess 13 has been seted up to the bottom of fixed stopper 7, the inside that fixed stopper 7 is located second recess 13 is provided with through-hole 8, and when the oil pressure entered into the second recess 13 of fixed stopper 7 bottom, through setting up through-hole 8, make the oil pressure pass through the outside dispersion of through-hole 8, reduced the pressure of oil pressure to fixed stopper 7.

When the working principle or the structural principle is used, when an oil well is blown out, oil pressure generated in the oil well enables the fixed plug 7 to move upwards, the fixed plug 7 drives the connecting plate 16 to move upwards, the connecting plate 16 pushes the second fixed block 17 to push upwards in the shell 5, the second fixed block 17 moves upwards, the third fixed block 21 slides upwards through the roller 20, the other side of the roller 20 slides in the chute 19 of the fixed plate 4, the second fixed block 17 drives the pull rod 23 to push upwards, the pull rod 23 drives the fixed rod 12 to move upwards in the sleeve 10, the fixed rod 12 drives the tension spring 11 to pull upwards, the position of the fixed plug 7 moving upwards is limited through the limiting block 9, the fixed column 15 of the fixed plug 7 moves in the first groove 6, the fixed plug 7 is fixed, the rubber pad 14 on the outer wall of the fixed plug 7 is attached to the outer wall of the limiting block 9, the shell 5 is sealed with the second fixed block 17 through the sealing gasket, oil in the oil well is sealed, when oil pressure is reduced, the fixing rod 12 is pulled through the tension spring 11, the fixing rod 12 is reset, the pull rod 23 moves downwards in the sleeve 10, the second fixing block 17 moves downwards through elastic potential energy of the spring 3, at the moment, the third fixing block 21 drives the roller 20 to slide downwards in the sliding groove 19, the second fixing block 17 drives the fixing plug 7 to move downwards through the connecting plate 16, the fixing plug 7 is separated from the limiting block 9, and the fixing column 15 is separated from the first groove 6, so that the device is reset.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an oil field well drilling and workover blowout preventer, includes casing (5), its characterized in that: the inner wall of the shell (5) is fixedly connected with a fixed plate (4), a sliding groove (19) is formed in the fixed plate (4), a first fixed block (2) is welded on the upper portion of the inner wall of the shell (5), a sleeve (10) is welded on the outer wall of the first fixed block (2), a pull rod (23) is connected in the sleeve (10) in a sliding mode, the pull rod (23) penetrates through the sleeve (10), a second fixed block (17) is fixedly connected to one end, far away from the sleeve (10), of the pull rod (23), a connecting plate (16) is connected to the bottom of the second fixed block (17) in a screwed mode, a fixed plug (7) is fixedly connected to the bottom of the connecting plate (16), third fixed blocks (21) are fixedly connected to the outer walls of the two sides of the second fixed block (17), idler wheels (20) are connected in the sliding mode to the inner wall of the third fixed block (, the inside of fixed stopper (7) is provided with second recess (13), the one end welding that pull rod (23) are close to sleeve (10) has dead lever (12), the both ends of dead lever (12) all are connected with extension spring (11), the one end of extension spring (11) is connected with the upper surface of casing (5), the upper portion threaded connection of casing (5) has upper cover (1).

2. The blowout preventer of claim 1, wherein: the bottom of the first fixing block (2) is fixedly connected with a spring (3).

3. The blowout preventer of claim 1, wherein: and a sealing gasket (18) is adhered to the side of the outer wall of the lower part of the second fixing block (17), and the bottom of the sealing gasket (18) is adhered to the upper surface of the connecting plate (16).

4. The blowout preventer of claim 1, wherein: the outer wall of the fixed plug (7) is sleeved with a rubber pad (14), and the fixed plug (7) is conical in shape.

5. The blowout preventer of claim 1, wherein: the outer wall both sides fixedly connected with fixed column (15) of fixed stopper (7), the welding of the bottom both sides of casing (5) has stopper (9), stopper (9) and the inside of casing (5) all are provided with first recess (6) with fixed column (15) looks adaptation.

6. The blowout preventer of claim 1, wherein: a second groove (13) is formed in the bottom of the fixing plug (7), and a through hole (8) is formed in the fixing plug (7) located in the second groove (13).