A natural gas well plugging device

Abstract

The present application relates to the field of plugging leaks in natural gas wells, and discloses a plugging leak device for natural gas wells, including a natural gas well pipeline, wherein a connecting mounting plate is fixedly installed on the outer surface of the natural gas well pipeline near the top end, a pipeline sealing cover is threadedly connected to the outer surface of the connecting mounting plate, and a circular groove is provided on the bottom surface of the pipeline sealing cover. An operator first uses a temperature controller to start an electric heating belt to heat and melt a solid glue with the electric heating belt, and the melted solid glue is discharged through an internal threaded pipe. After the solid glue is completely discharged, the countersunk hexagon socket bolt is tightened. Then, the operator connects a new solid glue solution tank so that the solid glue solution enters the threaded gap between the pipeline sealing cover and the connecting mounting plate through a chemical injection pump, thereby realizing the replacement of the solid glue. The entire operation process does not require the removal of the pipeline sealing cover. At the same time, the device uses a temperature controller to control the heating of the electric heating belt. Compared with a traditional handheld heating rod, the device is more convenient and heats evenly, thereby improving the heating effect.

Description

Technical Field

[0001] The present application belongs to the technical field of plugging leakage in natural gas wells, and specifically relates to a plugging leakage device in a natural gas well. Background Art

[0002] Natural gas well plugging refers to the process of taking a series of technical means and methods to repair the leakage point, prevent the loss of natural gas, and ensure production safety and efficiency when a leak occurs in the wellbore or the pipeline system connected to it during the natural gas extraction process. The natural gas well plugging device is a device specially used to detect, prevent and deal with natural gas well leakage. This type of device is crucial to ensuring the safe operation of oil and gas fields and the effective use of resources.

[0003] For example, the utility model patent with announcement number CN219262332U discloses a natural gas wellhead plugging device, which includes a well pipe, a pipe cover screwed on the top of the well pipe, a screw head provided at the top center of the pipe cover, a support ring provided in the well pipe, a soft head provided in the pipe cover and the soft head presses the support ring, a drainage hole is provided on one side of the bottom of the pipe cover, a first soft ring is provided in the drainage hole, a screw thread is inserted in the first soft ring and is screwed in the drainage hole. Counter-rotate the rotary plate to unscrew the pressure plug out of the injection cylinder, then pour the adhesive into the injection cylinder, and then rotate the rotary plate clockwise to press the pressure plug into the injection cylinder. New adhesive can be injected into the matching gap between the pipe cover and the well pipe thread until part of the new adhesive is discharged from the drainage hole. Lock the rotary thread in the drainage hole, unscrew the through pipe out of the screw cap, and finally put a plastic bag on the screw cap and tie it up with a rope. Therefore, there is no need to remove the pipe cover during the plugging operation, and the matching seal between the pipe cover and the well pipe can be achieved.

[0004] However, it was found in actual use that: the device heats the side wall of the pipe cover by contacting the heating rod at a temperature of 120 degrees to melt the colloid in the gap between the pipe cover and the well pipe thread, so that the melted colloid can be discharged through the drainage hole;

[0005] However, the operation of the hot rod of the device requires manual holding, which is cumbersome and inconvenient. Especially for the thicker inside of the pipe cover, the heating and heat conduction process takes a long time, which not only affects the melting efficiency, but also significantly reduces the efficiency of the operation. Therefore, a natural gas well plugging device is provided. Utility Model Content

[0006] The purpose of this application is to provide a natural gas well plugging device in order to solve the above-mentioned problems.

[0007] The technical solution adopted in the present application is as follows: a natural gas well plugging device, comprising a natural gas well pipeline, a connecting mounting plate fixedly installed on the outer surface of the natural gas well pipeline near the top end, a pipeline sealing cover threadedly connected to the outer surface of the connecting mounting plate, a circular groove is provided on the bottom surface of the pipeline sealing cover, an electric heating belt is arranged inside the circular groove, a mounting shell is fixedly installed on the outer surface of the pipeline sealing cover, a temperature controller is fixedly installed inside the mounting shell, the electric heating belt is electrically connected to the temperature controller, and a solid glue injection mechanism is arranged on the outer surface of the pipeline sealing cover.

[0008] In a preferred embodiment, the solid glue injection mechanism includes an injection pipe, a connecting glue injection head, an internal threaded pipe and a countersunk hexagon socket bolt. The pipe sealing cover is fixedly installed with an injection pipe near the top outer surface, and a connecting glue injection head is fixedly installed at one end of the injection pipe away from the pipe sealing cover. The pipe sealing cover is fixedly installed with an internal threaded pipe near the bottom outer surface, and the internal thread of the internal threaded pipe is connected to a countersunk hexagon socket bolt.

[0009] In a preferred embodiment, a bottom sealing disk is fixedly installed on the bottom surface of the pipe sealing cover by means of an arranged hexagon socket screw, a sealing protrusion is fixedly installed on the bottom surface of the bottom sealing disk, a connecting groove corresponding to the sealing protrusion is fixedly installed on the top surface of the connecting mounting disk, and the bottom end of the sealing protrusion is inserted into the inside of the connecting groove.

[0010] In a preferred embodiment, an exhaust pipe is fixedly mounted on the top surface of the pipeline sealing cover near the middle, and a connecting pipe is fixedly mounted on the top end of the exhaust pipe via a flange connecting plate.

[0011] In a preferred embodiment, a sealing ring is fixedly mounted on the inner side wall of the bottom sealing disk.

[0012] In a preferred embodiment, a sealing connection seat is fixedly mounted on the top surface of the pipeline sealing cover, and a plurality of threaded holes are formed on the top surface of the sealing connection seat in a circumferential array.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are:

[0014] 1. In the present application, due to the adoption of the above-mentioned scheme, the operator first uses the temperature controller to start the electric heating belt, and sets the required temperature and time, so that the electric heating belt heats and melts the solid glue. Subsequently, the operator unscrews the countersunk hexagon socket bolt and uses the chemical injection pump to inject compressed gas between the pipe sealing cover and the connecting mounting plate. The compressed gas acts on the melted solid glue to discharge it through the internal threaded pipe. After the solid glue is completely discharged, the countersunk hexagon socket bolt is tightened again. Then, the operator reconnects the new solid glue solution tank with the chemical injection pump, and injects the new solid glue solution into the threaded gap between the pipe sealing cover and the connecting mounting plate through the chemical injection pump, thereby realizing the replacement of the solid glue. The entire operation process does not require the removal of the pipe sealing cover, thereby improving work efficiency. At the same time, the device uses a temperature controller to control the heating of the electric heating belt, which is more convenient and heats evenly compared to traditional handheld heating rods, thereby improving the heating effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of this application;

[0016] Figure 2 It is a schematic diagram of the side section structure of this application;

[0017] Figure 3 For this application Figure 2 Enlarged structural diagram at A in the middle.

[0018] Figure 4 This is a schematic diagram of the bottom view of the pipeline sealing cover of the present application.

[0019] Markings in the figure: 1. Natural gas well pipeline; 2. Connection installation plate; 3. Pipe sealing cover; 4. Circular groove; 5. Electric heating belt; 6. Installation shell; 7. Temperature controller; 8. Solid glue injection mechanism; 801. Injection pipe; 802. Connection glue injection head; 803. Internal threaded pipe; 804. Countersunk hexagon socket bolt; 9. Bottom sealing plate; 10. Sealing bump; 11. Connection groove; 12. Exhaust pipe; 13. Connecting pipe; 14. Sealing ring; 15. Sealing connection seat. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0021] refer to Figure 1 , Figure 2 and Figure 3A natural gas well plugging device comprises a natural gas well pipeline 1, a connection mounting plate 2 is fixedly installed on the outer surface of the natural gas well pipeline 1 near the top, and a pipeline sealing cover 3 is threadedly connected to the outer surface of the connection mounting plate 2; a circular protrusion is installed on the top surface of the connection mounting plate 2, a threaded groove is provided on the outer surface of the circular protrusion, and an external thread is provided on the inner wall surface of the pipeline sealing cover 3, so that the pipeline sealing cover 3 is threadedly connected to the outer surface of the connection mounting plate 2 to seal the natural gas well pipeline 1, and a solid glue is provided between the threaded connection of the pipeline sealing cover 3 and the connection mounting plate 2, so as to further improve the sealing effect.

[0022] refer to Figure 2 , Figure 3 and Figure 4 A circular groove 4 is provided on the bottom surface of the pipe sealing cover 3, and an electric heating belt 5 is arranged inside the circular groove 4; the circular groove 4 is provided to facilitate the installation of the electric heating belt 5, and the electric heating belt 5 can heat the pipe sealing cover 3 to facilitate the subsequent melting of the solid glue.

[0023] refer to Figure 1 , Figure 2 and Figure 3 A mounting shell 6 is fixedly installed on the outer surface of the pipe sealing cover 3, a temperature controller 7 is fixedly installed inside the mounting shell 6, the electric heating belt 5 is electrically connected to the temperature controller 7, and a solid glue injection mechanism 8 is provided on the outer surface of the pipe sealing cover 3; the mounting shell 6 is provided, it is convenient to install and fix the temperature controller 7, and the temperature controller 7 is provided, it is convenient for personnel to control the heating temperature and time of the electric heating belt 5, so that the electric heating belt 5 can heat the pipe sealing cover 3 to a suitable temperature at a regular time. The temperature controller 7 is an existing structure, and this application only uses it without improving its structure, so it will not be described in detail here.

[0024] refer to Figure 1 , Figure 2 and Figure 3, the solid glue injection mechanism 8 includes an injection pipe 801, a connecting glue injection head 802, an internal threaded pipe 803 and a countersunk hexagon socket bolt 804. The pipe sealing cover 3 is fixedly installed with an injection pipe 801 on the outer surface near the top, and the end of the injection pipe 801 away from the pipe sealing cover 3 is fixedly installed with a connecting glue injection head 802; the outer surface of the connecting glue injection head 802 is threadedly connected with a sealing end cap, so that it is easy to seal the connecting glue injection head 802, so that the outside air and dust will not enter the interior of the connecting glue injection head 802. When the user needs to inject glue into the thread gap between the pipe sealing cover 3 and the connecting mounting plate 2, first, The sealing end cover is unscrewed, and then the external chemical injection pump is connected to the connecting glue injection head 802, so that it is convenient for subsequent personnel to use the chemical injection pump to inject the glue into the threaded gap between the pipeline sealing cover 3 and the connecting mounting disk 2. A threaded hole can be opened inside the connecting mounting disk 2, and an external thread can be opened at the discharge end of the chemical injection pump pipeline. This makes it easy to connect the chemical injection pump to the connecting mounting disk 2. At the same time, the connecting mounting disk 2 and the chemical injection pump can also be connected in other ways. The chemical injection pump is similar to the injection mechanism used in the reference comparison case, which mainly injects the glue in the container into the pipeline under the pushing pressure.

[0025] refer to Figure 1 , Figure 2 and Figure 3 , an internal threaded tube 803 is fixedly installed near the bottom outer surface of the pipeline sealing cover 3, and the internal thread of the internal threaded tube 803 is connected with a countersunk hexagon socket bolt 804; when the chemical injection pump needs to inject glue into the thread gap between the pipeline sealing cover 3 and the connecting installation disk 2, the countersunk hexagon socket bolt 804 can be screwed out from the inside of the internal threaded tube 803, and then the chemical injection pump can first inject compressed air when injecting glue, and the compressed air enters the thread gap between the pipeline sealing cover 3 and the connecting installation disk 2 to discharge the melted solid glue through the internal threaded tube 803. After the solid glue at the threaded gap between the cover 3 and the connecting mounting plate 2 is discharged, the personnel can screw the countersunk hexagon socket bolt 804 back into the internal threaded tube 803 to seal it, and then inject the glue into the threaded gap between the pipeline sealing cover 3 and the connecting mounting plate 2 through the chemical injection pump. This makes it easy to replace the solid glue at the threaded gap between the pipeline sealing cover 3 and the connecting mounting plate 2, and there is no need to disassemble the pipeline sealing cover 3. The chemical injection pump will be used when plugging leaks in natural gas wells, and it is an existing structure. This application only uses it without improving its structure, so it will not be described in detail here.

[0026] refer to Figure 1 , Figure 2 and Figure 3The bottom surface of the pipeline sealing cover 3 is fixedly installed with a bottom sealing disk 9 by means of a set hexagon socket screw, and a sealing ring 14 is fixedly installed on the inner side wall of the bottom sealing disk 9; the set sealing ring 14 facilitates further sealing operation of the pipeline sealing cover 3.

[0027] refer to Figure 2 , Figure 3 A sealing protrusion 10 is fixedly installed on the bottom surface of the bottom sealing disk 9, and a connecting groove 11 corresponding to the sealing protrusion 10 is fixedly installed on the top surface of the connecting mounting disk 2, and the bottom end of the sealing protrusion 10 is inserted into the inside of the connecting groove 11; by inserting the bottom end of the sealing protrusion 10 into the inside of the connecting groove 11, it is convenient to improve the sealing effect at the connection between the top 2 of the connecting mounting disk and the bottom of the pipeline sealing cover.

[0028] refer to Figure 1 , Figure 2 An exhaust pipe 12 is fixedly installed near the middle of the top surface of the pipeline sealing cover 3, and a connecting pipe 13 is fixedly installed on the top of the exhaust pipe 12 through a flange connecting plate; the exhaust pipe 12 and the flange connecting plate are convenient for installing the connecting pipe 13, and the natural gas inside the natural gas well pipeline 1 is convenient for discharging through the connecting pipe 13.

[0029] refer to Figure 1 , Figure 2 A sealing connection seat 15 is fixedly installed on the top surface of the pipeline sealing cover 3, and a plurality of threaded holes are provided on the top surface of the sealing connection seat 15 in a circular array; through the setting of the sealing connection seat 15, when the connecting pipe 13 is not connected to the exhaust pipe 12, a circular sealing cover can be used to connect the sealing connection seat 15 by bolts, so as to facilitate sealing protection of the exhaust pipe 12.

[0030] The implementation principle of the embodiment of the natural gas well plugging device of the present application is as follows: the operator first fixes the pipeline sealing cover 3 to the outside of the connection mounting plate 2 through a threaded connection, and the thread gap is reinforced by a solid glue to significantly improve the sealing and stability of the connection, while ensuring that the pipeline sealing cover 3 will not rotate easily;

[0031] When it is necessary to replace the solid glue at the threaded gap, the operator first uses the temperature controller 7 to start the electric heating belt 5 and sets the required temperature and time so that the electric heating belt 5 heats and melts the solid glue. Subsequently, the operator unscrews the countersunk hexagon socket bolt 804 and uses the chemical injection pump to inject compressed gas between the pipe sealing cover 3 and the connecting mounting disk 2. The compressed gas acts on the melted solid glue to discharge it through the internal threaded tube 803. After the solid glue is completely discharged, the countersunk hexagon socket bolt 804 is tightened again to complete the process. Then, the operator reconnects the new solid glue solution tank with the chemical injection pump, and injects the new solid glue solution into the threaded gap between the pipe sealing cover 3 and the connecting mounting disk 2 through the chemical injection pump, thereby realizing the replacement of the solid glue. The entire operation process does not require the removal of the pipe sealing cover 3, which greatly simplifies the process and improves work efficiency. At the same time, the temperature controller 7 is used to control the heating of the electric heating belt 5. Compared with the traditional handheld heating rod, it is more convenient and heats evenly, thereby improving the heating effect.

[0032] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A natural gas well plugging device, comprising a natural gas well pipeline (1), characterized in that: A connection mounting plate (2) is fixedly mounted on the outer surface of the natural gas well pipeline (1) near the top end; a pipeline sealing cover (3) is threadedly connected to the outer surface of the connection mounting plate (2); a circular groove (4) is provided on the bottom surface of the pipeline sealing cover (3); an electric heating belt (5) is arranged inside the circular groove (4); a mounting shell (6) is fixedly mounted on the outer surface of the pipeline sealing cover (3); a temperature controller (7) is fixedly mounted inside the mounting shell (6); the electric heating belt (5) is electrically connected to the temperature controller (7); and a solid glue injection mechanism (8) is arranged on the outer surface of the pipeline sealing cover (3).

2. A natural gas well plugging device as claimed in claim 1, characterized in that: The solid glue injection mechanism (8) comprises an injection pipe (801), a connecting glue injection head (802), an internally threaded pipe (803) and a countersunk hexagon socket bolt (804); the pipe sealing cover (3) is provided with an injection pipe (801) fixedly mounted near the top outer surface; the injection pipe (801) is fixedly mounted at one end away from the pipe sealing cover (3); the pipe sealing cover (3) is provided with an internally threaded pipe (803) fixedly mounted near the bottom outer surface; the internal thread of the internally threaded pipe (803) is connected to a countersunk hexagon socket bolt (804).

3. A natural gas well plugging device as claimed in claim 1, characterized in that: A bottom sealing disc (9) is fixedly mounted on the bottom surface of the pipeline sealing cover (3) by means of a hexagon socket screw, a sealing protrusion (10) is fixedly mounted on the bottom surface of the bottom sealing disc (9), a connecting groove (11) corresponding to the sealing protrusion (10) is fixedly mounted on the top surface of the connecting mounting disc (2), and the bottom end of the sealing protrusion (10) is inserted into the interior of the connecting groove (11).

4. A natural gas well plugging device as claimed in claim 1, characterized in that: An exhaust pipe (12) is fixedly mounted on the top surface of the pipeline sealing cover (3) near the middle, and a connecting pipe (13) is fixedly mounted on the top end of the exhaust pipe (12) via a flange connecting plate.

5. A natural gas well plugging device as claimed in claim 3, characterized in that: A sealing ring (14) is fixedly mounted on the inner side wall of the bottom sealing disk (9).

6. A natural gas well plugging device as claimed in claim 1, characterized in that: A sealing connection seat (15) is fixedly mounted on the top surface of the pipeline sealing cover (3), and a plurality of threaded holes are formed on the top surface of the sealing connection seat (15) in a circumferential array.

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