In-pipe plugging valve device

Abstract

The utility model provides an in-pipe plugging valve device which comprises an inner pipe column, the periphery of the inner pipe column is sleeved with a firing pin, the firing pin comprises an attaching part attached to the outer wall of the inner pipe column and a matching part arranged at the end away from the attaching part, and the attaching part is fixedly connected with the inner pipe column through a shear pin; the in-pipe plugging valve further comprises a rupture disc. The rupture disc comprises a packing part arranged in the inner pipe column and a protruding part protruding out of the outer surface of the inner pipe column. And the shear pin can be sheared off, so that the firing pin is separated from the inner pipe column and moves downwards, and the side face of the matching part collides with the convex part to crush the rupture disc, so that the inner pipe column is communicated. The operation mode of the plugging valve device in the pipe can be simplified, and meanwhile a good plugging effect is provided.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil and gas field well completion, and in particular relates to an in-pipe plugging valve device. Background Art

[0002] Given the current oil and gas activity in carbonate wells, leaks can easily turn into overflows during completion operations, posing a high risk for well control. Conventional completion tools utilize ball-seated seals, which complicate operation and fail to completely seal oil and gas within the tubing, preventing blowouts and well kicks. This poses a significant risk to well control and also makes it difficult to achieve full bore clearance within the tubing. Therefore, there is an urgent need for an in-pipe sealing valve device that can prevent blowouts, is easy to operate, provides effective sealing, and allows full bore clearance upon opening. Utility Model Content

[0003] One purpose of the present invention is to provide an in-pipe blocking valve device to simplify the operation of the in-pipe blocking valve device while providing a better blocking effect.

[0004] According to the utility model, an in-pipe sealing valve device is provided, comprising an inner pipe column, the outer periphery of the inner pipe column is sleeved with a striker, the striker comprises a fitting portion fitted with the outer wall of the inner pipe column and a matching portion arranged at one end away from the fitting portion, the fitting portion is fixedly connected to the inner pipe column by a shear pin; the in-pipe sealing valve also comprises a rupture disk, the rupture disk comprises a sealing portion arranged inside the inner pipe column and a convex portion protruding from the outer surface of the inner pipe column; the shear pin can be sheared off so that the striker detaches from the inner pipe column and moves downward, and the side surface of the matching portion collides with the convex portion to smash the rupture disk, so that the inner pipe column is connected.

[0005] In a preferred embodiment, the in-pipe sealing valve device also includes an outer tube and a buffer pad. The outer tube is sleeved on the outer surface of the fitting part, and a moving space is formed between its inner wall and the outer surface of the matching part, the side surface of the fitting part and the side surface of the buffer pad. After the side surface of the matching part collides with the convex part to crush the rupture disk, the side surface of the fitting part can collide with the buffer pad.

[0006] In a preferred embodiment, the protrusion and the sealing portion are integrally formed.

[0007] In a preferred embodiment, the inner surface of the buffer pad abuts against the outer surface of the convex portion.

[0008] In a preferred embodiment, the rupture disk is made of glass or ceramic material.

[0009] In a preferred embodiment, the rupture disk is configured in a circular shape.

[0010] In a preferred embodiment, the in-pipe sealing valve device also includes an upper joint sleeved on the upper end of the inner pipe column and a lower joint sleeved on the lower end of the inner pipe column, and the lower end surface and upper end surface of the rupture disk are respectively in pressure contact with the lower joint and the inner pipe column.

[0011] In a preferred embodiment, the upper joint and the lower joint are both connected to the inner pipe string by snap fasteners.

[0012] In a preferred embodiment, the outer surface of the upper joint fits the inner surface of the outer tube and is sealed with a sealing assembly.

[0013] In a preferred embodiment, the sealing assembly includes an O-type sealing ring and an O-type sealing back ring coaxially arranged with the O-type sealing ring.

[0014] The utility model has at least the following technical effects:

[0015] According to the present invention, an inner tubing string and a rupture disk are provided. Since the outer periphery of the inner tubing string is provided with a striker, and the striker includes a fitting portion that fits with the outer wall of the inner tubing string and a matching portion provided at one end away from the fitting portion, the fitting portion is fixedly connected to the inner tubing string through a shear pin, so that the shear pin can be sheared off, so that the striker is separated from the inner tubing string and moves downward. Furthermore, since the rupture disk includes a sealing portion provided inside the inner tubing string and a convex portion protruding from the outer surface of the inner tubing string, during the downward movement of the striker, the side of the matching portion collides with the convex portion to smash the rupture disk, so that the inner tubing string is connected, thereby simplifying the operation mode of the in-pipe sealing valve device and having a better sealing effect. The in-pipe sealing valve device described in the present invention can replace the ball seat of the sealing packer to achieve blowout prevention in the drilling tool, and after the rupture disk is smashed, the inner tubing string can achieve full diameter, thereby improving the one-time success rate of well completion and solving the well control risk problem. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The overall structural diagram of the in-pipe blocking valve device according to one embodiment of the present utility model is schematically shown.

[0017] In this application, all drawings are schematic drawings, which are only used to illustrate the principles of the present invention and are not drawn according to the actual scale. DETAILED DESCRIPTION

[0018] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0019] In this utility model, unless otherwise specified or limited, the term "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 an indirect connection through an intermediate medium; it can be the internal communication between two components or the interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0020] like Figure 1 As shown, the in-pipe sealing valve device 100 described in the present invention includes an inner pipe column 11, the outer periphery of the inner pipe column 11 is provided with a striker 3, the inner pipe column 11 is constructed into a columnar body, and has a flow channel inside, the striker 3 includes a fitting portion 31 fitted with the outer wall of the inner pipe column 11 and a matching portion 32 arranged at one end away from the fitting portion 31, and the fitting portion 31 is fixedly connected to the outer wall of the inner pipe column 11 through a shear pin 4. Optionally, the shear pin 4 is arranged along the radial direction of the inner pipe column 11. It should be noted that the "inner pipe column" described in the present invention itself has a sleeve of a certain thickness.

[0021] The in-pipe plugging valve device 100 of the present invention also includes a rupture disk 5, which separates the inner tubular string 11 into an upper tubular string and a lower tubular string, and blocks the flow passage within the inner tubular string 11. The rupture disk 5 includes a sealing portion 51 disposed within the inner tubular string 11, which is used to seal the internal flow space of the inner tubular string 11 and prevent drilling fluid from entering the inner tubular string 11 from flowing upward. The rupture disk 5 also includes a protrusion 52 that protrudes from the outer surface of the inner tubular string 11 and is integrally formed with the sealing portion 51. The protrusion 52 is mounted on the inner tubular string 11, and a sealing ring is used to achieve sealing.

[0022] When the in-pipe sealing valve device 100 described in the present invention is working, after the inner pipe string 11 is pressurized to the design pressure through the oil pipe, the shear pin 4 is sheared off, causing the striker 3 to separate from the inner pipe string 11 and move downward, and the side surface of the matching portion 32 of the striker 3 collides with the protrusion 52 of the rupture disk 5 to break the rupture disk 5, thereby connecting the pipe string.

[0023] According to the present invention, an inner tubular column 11 and a rupture disk 5 are provided. Since the outer periphery of the inner tubular column 11 is provided with a striker 3, and the striker 3 includes a fitting portion 31 fitted with the outer wall of the inner tubular column 11 and a matching portion 32 provided at one end away from the fitting portion 31, the fitting portion 31 is fixedly connected to the inner tubular column 11 through a shear pin 4, so the shear pin 4 can be sheared off to allow the striker 3 to detach from the inner tubular column 11 and move downward. Furthermore, since the rupture disk 5 includes a sealing portion 51 provided inside the inner tubular column 11 and a convex portion 52 protruding from the outer surface of the inner tubular column 11, during the downward movement of the striker 3, the side of the matching portion 32 collides with the convex portion 52 to break the rupture disk 5, so that the inner tubular column 11 is connected, thereby simplifying the operation method of the in-pipe sealing valve device 100 and achieving a better sealing effect. The in-pipe plugging valve device 100 of the present invention can replace the ball seat of the sealing packer to achieve blowout prevention in the drilling tool. After the rupture disk 5 is broken, the inner pipe string 11 can achieve full bore, thereby improving the one-time completion success rate and solving the well control risk problem.

[0024] In one or more embodiments, the in-pipe sealing valve device 100 described in the present invention further includes an outer tube 2 and a buffer pad 6. The outer tube 2 is sleeved on the outer surface of the fitting portion 31 of the striker 3 and is sealed therewith, and a moving space s is formed between its inner wall and the outer surface of the fitting portion 32 of the striker 3, the side surface of the fitting portion 31, and the side surface of the buffer pad 6. During the downward movement of the striker 3 after it detaches from the inner pipe column 11, the fitting portion 31 can move within the moving space s, thereby providing sufficient displacement space for the fitting portion 31, and after the side surface of the fitting portion 32 of the striker 3 collides with the protrusion 52 of the rupture disk 5 to shatter the rupture disk 5, the side surface of the fitting portion 31 can collide with the buffer pad 6, thereby playing a buffering role and preventing the striker 3 from failing under severe impact.

[0025] In one or more embodiments, the cushioning pad 6 is made of a flexible material.

[0026] In one or more embodiments, the inner surface of the cushion 6 abuts against the outer surface of the protrusion 52 .

[0027] In one or more embodiments, the rupture disk 5 is circular and made of glass or ceramic. After being compressed to the designed pressure, the shear pin 4 shears off, allowing the striker 3 to break the rupture disk 5. If the striker 3 fails to break the rupture disk 5, the rupture disk 5 can be broken by the tip of a wire pen.

[0028] In one or more embodiments, the in-pipe sealing valve device 100 of the present invention further includes an upper connector 1 that is sleeved onto the upper end of the inner tubular string 11, and a lower connector 7 that is sleeved onto the lower end of the inner tubular string 11. The lower and upper end surfaces of the rupture disk 5 are in pressure contact with the lower connector 7 and the inner tubular string 11, respectively, and the inner surface of the cushion 6 is in pressure contact with the outer surface of the protrusion 52, thereby securing the rupture disk 5. The striker 3 is disposed within the enclosed space formed by the upper connector 1, outer tube 2, cushion 6, lower connector 7, and inner tubular string 11.

[0029] In one or more embodiments, the upper joint 1 and the lower joint 7 are both connected to the inner pipe string 11 by snap fastening.

[0030] In one or more embodiments, the outer surface of the upper joint 1 is in contact with the inner surface of the outer tube 2 and is sealed by a sealing assembly (not shown).

[0031] In one or more embodiments, the upper connector 1 and the lower connector 7 are both made of alloy material.

[0032] In one or more embodiments, the upper joint 1 and the outer tube 2 , the outer tube 2 and the striker 3 , and the lower joint 7 and the buffer pad 6 are all sealed by a sealing assembly (not shown).

[0033] In one or more embodiments, the sealing assembly includes an O-ring and an O-ring backing ring coaxially arranged with the O-ring. The O-ring backing ring is used to provide support for the O-ring, prevent deformation of the O-ring, and improve the sealing ability of the O-ring.

[0034] In one or more embodiments, the O-ring is made of rubber, thereby making the performance of the sealing assembly more stable.

[0035] While the present invention has been described with reference to preferred embodiments, various modifications may be made and equivalent components may be substituted without departing from the scope of the present invention. In particular, the various technical features described in the various embodiments may be combined in any manner, provided no structural conflicts exist. The present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. An in-pipe plugging valve device, characterized in that: The inner pipe comprises an inner pipe column, the outer periphery of which is provided with a striker, the striker comprising a fitting portion fitted with the outer wall of the inner pipe column and a matching portion provided at one end away from the fitting portion, the fitting portion being fixedly connected to the inner pipe column via a shear pin; The in-pipe plugging valve device further includes a rupture disk, the rupture disk including a sealing portion disposed inside the inner pipe string and a convex portion protruding from the outer surface of the inner pipe string; The shear pin can be sheared off to allow the striker to detach from the inner string and move downward, and the side surface of the mating portion can collide with the protrusion to break the rupture disk, thereby allowing the inner string to communicate; The in-pipe sealing valve device further includes an outer tube and a buffer pad. The outer tube is sleeved on the outer surface of the fitting portion, and a movement space is formed between the inner wall of the outer tube and the outer surface of the matching portion, the side surface of the fitting portion, and the side surface of the buffer pad. After the side surface of the matching portion collides with the convex portion to crush the rupture disk, the side surface of the fitting portion can collide with the buffer pad. The in-pipe plugging valve device further comprises an upper joint sleeved on the upper end of the inner pipe string and a lower joint sleeved on the lower end of the inner pipe string, and the lower end surface and the upper end surface of the rupture disk are respectively in pressure contact with the lower joint and the inner pipe string; The striker is arranged in a closed space formed by the upper joint, the outer tube, the buffer pad, the lower joint and the inner pipe string; The outer surface of the upper joint is in contact with the inner surface of the outer tube and is sealed by a sealing assembly. The sealing assembly includes an O-type sealing ring and an O-type sealing back ring coaxially arranged with the O-type sealing ring.

2. The in-pipe blocking valve device according to claim 1, characterized in that: The convex portion and the sealing portion are integrally formed.

3. The in-pipe blocking valve device according to claim 2, characterized in that: The inner surface of the cushioning pad abuts against the outer surface of the convex portion.

4. The in-pipe blocking valve device according to claim 3, characterized in that: The rupture disk is made of glass or ceramic material.

5. The in-pipe blocking valve device according to claim 4, characterized in that: The rupture disk is configured in a circular shape.

6. The in-pipe blocking valve device according to claim 1, characterized in that: The upper joint and the lower joint are both connected to the inner pipe column through buckles.

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