Blowout and blockage prevention device for oil pipe of oil and gas well

Abstract

The utility model discloses an oil and gas well oil pipe blowout prevention blocking device which comprises a blowout preventer body, transmission covers are fixedly connected to the left side face and the right side face of the blowout preventer body, a through hole is formed in the upper surface of the blowout preventer body, transmission grooves are formed in the inner wall of the through hole, blocking plates are connected to the inner walls of the two transmission grooves in a sliding mode, and the blocking plates are fixedly connected to the left side face and the right side face of the blowout preventer body. Threaded transmission pipes are fixedly connected to the side faces, away from each other, of the two blocking plates, transmission holes are formed in the inner side walls of the two transmission grooves, the ends, away from each other, of the two threaded transmission pipes extend into the two transmission holes correspondingly, and cover plates are fixedly installed at the ends, away from each other, of the two transmission covers correspondingly. Driving covers are fixedly mounted on the side faces, away from each other, of the two cover plates correspondingly, and driving motors are fixedly mounted on the inner side walls of the two driving covers correspondingly. According to the device, the automatic blowout prevention effect on the top of the oil pipe is achieved, the use flexibility is improved, and the blowout prevention operation is more convenient.

Description

Technical Field

[0001] The utility model relates to the field of oil and gas wells, in particular to an oil pipe blowout prevention and blocking device for oil and gas wells. Background Art

[0002] Oil and gas wells are holes drilled by drilling methods. Generally, after reaching the oil layer, oil and gas wells are lowered into the oil layer casing, and oil well cement is injected into the annular space between the casing and the well wall to protect the well wall and seal the oil, gas and water layers. Then, according to the requirements of oil field development, the oil layer is perforated with a perforating gun to form a channel, and the oil pipe is lowered. Using appropriate inducing flow methods, the oil and gas are raised from the bottom of the oil and gas well to the wellhead.

[0003] At present, the oil outlet of the oil pipe of the oil and gas well is usually equipped with a blowout preventer assembly. The blowout preventer is used to close the wellhead during operations such as oil testing, well repair and completion to prevent blowout accidents. However, the current blowout preventer needs manual operation when closing the wellhead, which is more troublesome during the blowout prevention and blocking operation, and the automatic blowout prevention effect cannot be achieved, which reduces the flexibility of use. Therefore, we propose an oil and gas well oil pipe blowout prevention and blocking device to solve the above problems. Utility Model Content

[0004] The utility model aims to provide an oil and gas well oil pipe blowout prevention and plugging device to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A blowout prevention and plugging device for oil and gas well tubing, comprising a blowout preventer body, wherein the left and right side surfaces of the blowout preventer body are fixedly connected to a transmission cover, the upper surface of the blowout preventer body is provided with a through hole, the inner wall of the through hole is provided with a transmission groove, the inner walls of the two transmission grooves are slidably connected with a plugging plate, the sides of the two plugging plates away from each other are fixedly connected with a threaded transmission pipe, the inner side walls of the two transmission grooves are provided with a transmission hole, the ends of the two threaded transmission pipes away from each other respectively extend to the inside of the two transmission holes, the ends of the two transmission covers away from each other are fixedly installed with a cover plate, the sides of the two cover plates away from each other are fixedly installed with a drive cover, the inner side walls of the two drive covers are fixedly installed with a drive motor, the outer surfaces of the two cover plates are fixedly inlaid with bearing rings, the inner rings of the two bearing rings are fixedly connected with a threaded transmission rod, and the front of the blowout preventer body is fixedly installed with a control panel.

[0007] In a further embodiment, outer surfaces of the two threaded transmission rods are respectively threadedly connected to inner circles of two threaded transmission tubes, and output ends of the two drive motors are respectively fixedly connected to ends of the two threaded transmission rods that are away from each other.

[0008] In a further embodiment, the inner walls of the two transmission grooves are each provided with two sliding holes, the inner walls of the two groups of sliding holes are slidably connected with slides, and the ends of the two groups of slides that are close to each other are respectively fixedly connected to the side surfaces of the two blocking plates that are away from each other.

[0009] In a further embodiment, the outer surface of the blowout preventer body is fixedly connected with two connecting pipes, and ends of the two connecting pipes close to each other are respectively connected with the top end of the through hole and the bottom end of the through hole.

[0010] In a further embodiment, ends of the two connecting pipes that are away from each other are fixedly connected with flanges, and sides of the two flanges that are away from each other are provided with a plurality of connecting holes.

[0011] In a further embodiment, the sides of the two blocking plates that are close to each other are fixedly connected with sealing gaskets, and the sides of the two sealing gaskets that are close to each other are in close contact.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The device can install two blocking plates respectively through two transmission grooves provided on the blowout preventer body, and can drive the two blocking plates to move respectively by utilizing the driving motor inside the driving cover and cooperating with the threaded transmission rod and the threaded transmission pipe, and can provide power for the two blocking plates to approach or move away from each other, and can seal the through hole by utilizing the mutual approach of the two blocking plates, thereby achieving the effect of automatic blowout prevention on the top of the oil pipe, improving the flexibility during use, and making the blowout prevention operation more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the front view of the oil pipe blowout prevention and blockage device for oil and gas wells.

[0015] Figure 2 It is a cross-sectional view of the front view of the oil pipe blowout prevention and plugging device for oil and gas wells.

[0016] Figure 3 It is a cross-sectional view of a top view of an oil pipe blowout prevention and plugging device for an oil and gas well.

[0017] Figure 4 It is a cross-sectional view of the front view of the transmission cover in the oil pipe blowout prevention and plugging device of the oil and gas well.

[0018] In the figure: 1, BOP body; 2, transmission cover; 3, through hole; 4, transmission groove; 5, threaded transmission pipe; 6, cover plate; 7, drive cover; 8, drive motor; 9, bearing ring; 10, threaded transmission rod; 11, transmission hole; 12, slide plate; 13, slide hole; 14, plugging plate; 15, sealing gasket; 16, control panel; 17, connecting pipe; 18, flange; 19, connecting hole. DETAILED DESCRIPTION

[0019] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4In the utility model, an oil and gas well oil pipe blowout prevention and plugging device comprises a blowout preventer body 1, a transmission cover 2 is fixedly connected to the left and right sides of the blowout preventer body 1, a through hole 3 is opened on the upper surface of the blowout preventer body 1, a transmission groove 4 is opened on the inner wall of the through hole 3, a blocking plate 14 is slidably connected to the inner walls of the two transmission grooves 4, a threaded transmission pipe 5 is fixedly connected to the side of the two blocking plates 14 away from each other, a transmission hole 11 is opened on the inner side walls of the two transmission grooves 4, and the ends of the two threaded transmission pipes 5 away from each other extend to the inside of the two transmission holes 11 respectively, a cover plate 6 is fixedly installed at the ends of the two transmission covers 2 away from each other, a drive cover 7 is fixedly installed on the side of the two cover plates 6 away from each other, a drive motor 8 is fixedly installed on the inner side walls of the two drive covers 7, a bearing ring 9 is fixedly inlaid on the outer surface of the two cover plates 6, a threaded transmission rod 10 is fixedly connected to the inner ring of the two bearing rings 9, and a control panel 16 is fixedly installed on the front of the blowout preventer body 1.

[0023] The outer surfaces of the two threaded transmission rods 10 are respectively connected to the inner circle threads of the two threaded transmission tubes 5, and the output ends of the two driving motors 8 are respectively fixedly connected to the ends of the two threaded transmission rods 10 that are away from each other. The inner walls of the two transmission grooves 4 are provided with two sliding holes 13, and the inner walls of the two groups of sliding holes 13 are slidably connected with slides 12. The ends of the two groups of slides 12 that are close to each other are respectively fixedly connected to the side surfaces of the two blocking plates 14 that are away from each other. Through the threaded transmission tube 5 and the threaded transmission rod 10, and the cooperation with the sliding holes 13 and the slides 12, power transmission can be better carried out, which will stably drive the blocking plate 14 to move left and right, and can provide power for the movement of the blocking plate 14.

[0024] The outer surface of the blowout preventer body 1 is fixedly connected with two connecting pipes 17, and the ends of the two connecting pipes 17 close to each other are respectively connected with the top end and the bottom end of the through hole 3, and the ends of the two connecting pipes 17 away from each other are fixedly connected with flanges 18, and the sides of the two flanges 18 away from each other are provided with a plurality of connecting holes 19, and the sides of the two blocking plates 14 close to each other are fixedly connected with sealing gaskets 15, and the sides of the two sealing gaskets 15 close to each other are in close contact. Through the arrangement of the connecting pipes 17 and the flanges 18, it is convenient to connect and install with the oil pipe and the oil outlet pipeline, and the arrangement of the sealing gaskets 15 deepens the sealing effect between the two blocking plates 14.

[0025] The working principle of the utility model is: first, the device is connected and installed on the top of the oil pipe through the flange 18 below, and then the device is connected to the power supply. When the oil pipe is blocked to prevent blowout, the two drive motors 8 are started clockwise by using the control panel 16, which will respectively drive the two threaded transmission rods 10 to rotate and cooperate inside the two threaded transmission tubes 5, so that the two threaded transmission tubes 5 can drive the two blocking plates 14 to move in the same direction until the two blocking plates 14 move to the inside of the through hole 3 and the two sealing pads 15 are in close contact. Then, the setting of the two blocking plates 14 is used to complete the anti-blowout blocking of the oil pipe.

[0026] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0027] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An oil and gas well oil pipe blowout prevention and blockage device, characterized in that: The blowout preventer comprises a blowout preventer body (1), wherein the left and right sides of the blowout preventer body (1) are fixedly connected to a transmission cover (2), the upper surface of the blowout preventer body (1) is provided with a through hole (3), the inner wall of the through hole (3) is provided with a transmission groove (4), the inner walls of the two transmission grooves (4) are slidably connected to a blocking plate (14), the sides of the two blocking plates (14) away from each other are fixedly connected to a threaded transmission pipe (5), the inner walls of the two transmission grooves (4) are provided with a transmission hole (11), and the ends of the two threaded transmission pipes (5) away from each other are The two transmission covers (2) are respectively extended to the inside of the two transmission holes (11); a cover plate (6) is fixedly installed on one end of the two transmission covers (2) away from each other; a drive cover (7) is fixedly installed on one side of the two cover plates (6) away from each other; a drive motor (8) is fixedly installed on the inner side wall of the two drive covers (7); a bearing ring (9) is fixedly inlaid on the outer surface of the two cover plates (6); the inner rings of the two bearing rings (9) are fixedly connected to a threaded transmission rod (10); and a control panel (16) is fixedly installed on the front of the blowout preventer body (1).

2. The oil and gas well oil pipe blowout prevention and blockage device according to claim 1, characterized in that: The outer surfaces of the two threaded transmission rods (10) are respectively threadedly connected to the inner circles of the two threaded transmission tubes (5), and the output ends of the two drive motors (8) are respectively fixedly connected to ends of the two threaded transmission rods (10) that are away from each other.

3. The oil and gas well oil pipe blowout prevention and blockage device according to claim 1, characterized in that: The inner walls of the two transmission grooves (4) are each provided with two sliding holes (13), the inner walls of the two groups of sliding holes (13) are both slidably connected with slide plates (12), and the ends of the two groups of slide plates (12) that are close to each other are respectively fixedly connected to the side surfaces of the two blocking plates (14) that are away from each other.

4. The oil and gas well oil pipe blowout prevention and blockage device according to claim 1, characterized in that: The outer surface of the blowout preventer body (1) is fixedly connected with two connecting pipes (17), and the ends of the two connecting pipes (17) close to each other are respectively connected with the top end of the through hole (3) and the bottom end of the through hole (3).

5. The oil and gas well oil pipe blowout prevention and blockage device according to claim 4, characterized in that: The ends of the two connecting pipes (17) that are away from each other are fixedly connected with flanges (18), and the side surfaces of the two flanges (18) that are away from each other are provided with a plurality of connecting holes (19).

6. The oil and gas well oil pipe blowout prevention and blockage device according to claim 1, characterized in that: The sides of the two blocking plates (14) that are close to each other are fixedly connected with sealing gaskets (15), and the sides of the two sealing gaskets (15) that are close to each other are in close contact.

Images