A high-yield water gas well blow-off burner

Abstract

The present application relates to a kind of high water gas well blowout burner.It specifically includes: blowout cylinder, front end has sealing plate;Blowout pipe, from the sealing plate passes through and extends into blowout cylinder;Backlash piece, installed in blowout cylinder and opposite the inner end nozzle of blowout pipe, to scatter the gas-liquid mixture ejected in blowout pipe;At least on the upper part of the cylinder wall of blowout cylinder at the back side of backlash piece, multiple overflow holes are scattered and distributed, to allow gas in gas-liquid mixture to flow out of blowout cylinder;Ignition device, above the outside of blowout cylinder, and along blowout cylinder to the front position of scattered and distributed overflow hole.When gas-liquid mixture is ejected from blowout pipe, it can impact on backlash piece and be scattered by backlash piece, so that gas and liquid can be better separated under the action of gravity, and liquid can be prevented from directly hitting overflow hole when blowout volume is large to extinguish the burner, to ensure that the burner continues to blowout combustion.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of high water gas well blowout burner. BACKGROUND

[0002] When gas well is continuously produced, formation pressure drops, gas well production decreases, and liquid carrying capacity decreases, wellbore liquid loading may occur.If the liquid loading cannot be discharged in time, it will lead to water flooding of gas well and production stop.To make the gas well quickly resume production, it is necessary to ignite and blowout the liquid through the wellhead multifunctional auxiliary process and the burner.In addition, when the gas well is operated and repaired, such as reperforating, well killing is needed to prevent blowout.When the gas well resumes production after the operation, it is also necessary to ignite and blowout the liquid through the multifunctional auxiliary process and the blowout burner.Therefore, for high water gas well, it is often necessary to ignite and blowout during the entire development process.

[0003] The existing blowout burners disclosed in the utility model patents with the authorization announcement numbers CN209130892U and CN212774234U are also applicable to water gas well, but in actual use, it is found that once the amount of blowout liquid is large, the blowout liquid will directly flow to the gas overflow hole, causing the blowout burner to be extinguished and resulting in blowout extinguishing.In high-sulfur gas well, once extinguished, a large amount of hydrogen sulfide and methane gas will be discharged into the air, causing environmental pollution and even consequences such as hydrogen sulfide poisoning of personnel.After the blowout burner is extinguished, the gas well needs to be closed, re-ignited and then blowout again, which will also cause the gas well to be unable to continuously carry liquid, seriously affecting the normal production of the gas well. SUMMARY

[0004] The present application aims to provide a high water gas well blowout burner to solve the problem of easy extinguishing of the existing blowout burner.

[0005] The high water gas well blowout burner of the present application comprises:

[0006] A blowout cylinder, which extends horizontally in use, has a sealing plate at the front end;

[0007] A blowout pipe, which passes through the middle or the position near the middle of the sealing plate and extends into the blowout cylinder, and the end of the blowout pipe outside the blowout cylinder is used to connect the blowout pipe line;

[0008] A counter-attack piece, which is installed in the blowout cylinder and opposite to the inner end port of the blowout pipe, is used to scatter the gas-liquid mixture sprayed from the blowout pipe;

[0009] On the cylinder wall of the blowout cylinder behind the counter-attack piece, a plurality of gas overflow holes are discretely distributed on at least the upper part thereof, to allow the gas in the gas-liquid mixture to flow out of the blowout cylinder, and the lower part of the blowout cylinder has a discharge port to allow the liquid in the gas-liquid mixture to flow out of the blowout cylinder;

[0010] Ignition device, above the outside of the blowout cylinder, and extending along the blowout cylinder to the front position of the discrete distribution of the overflow hole, to ignite the gas flowing out of the blowout cylinder.

[0011] The high-yield water gas well blowout burner of the present application can impact on the back piece and be scattered by the back piece when the gas-liquid mixture is ejected from the blowout pipe, so that the gas and liquid can be better separated under the action of gravity, and after the gas and liquid are separated, the liquid is at the bottom of the blowout cylinder and is discharged from the discharge port, and the gas is overflowed from the overflow hole and is ignited by the ignition device. The blowout burner of the present application directly realizes the first gas-liquid separation after the gas-liquid mixture is ejected by the setting of the back piece, which can avoid the liquid directly pouring into the overflow hole to extinguish the burner when the blowout quantity is large, and ensures the continuous blowout and combustion of the burner.

[0012] Further, the back piece is a bowl-shaped cover, and the opening of the bowl-shaped cover faces the pipe opening of the blowout pipe. The back piece with such structure can uniformly disperse the ejected gas-liquid mixture to the four directions, which is beneficial to the gas-liquid separation.

[0013] Further, the blowout cylinder is fixedly provided with a partition that separates the blowout cylinder into two parts, the partition is located at the rear of the back piece, the overflow hole and the discharge port are located at the rear side of the partition, the upper part of the partition is provided with a gas passing channel for the gas in the front side cavity of the blowout cylinder to pass backward, and the lower part of the partition is provided with a liquid passing channel for the liquid in the front side cavity to pass backward. Through the setting of the partition, the flow paths of the gas and the liquid can be guided, and the liquid can be better prevented from directly pouring into the overflow hole to extinguish the burner when the blowout quantity is large.

[0014] Further, the back piece is fixedly connected to the partition, which facilitates the setting of the back piece.

[0015] Further, the gas passing channel is provided with a demisting structure, which can better filter the water in the gas separated in the first separation, realize the second gas-liquid separation, and make the overflowed gas reliably burn.

[0016] Further, the blowout cylinder is of a split structure, the front cylinder body and the rear cylinder body are butted front and rear, the partition includes a front partition plate at the rear end of the front cylinder body and a rear partition plate at the front end of the rear cylinder body, the upper half of the front partition plate and the rear partition plate are both provided with discrete distribution of through holes, the demisting structure is between the front partition plate and the rear partition plate, the through holes provided on the front and rear partition plates constitute the gas passing channel, the front and rear partition plates are respectively provided with front and rear corresponding flow guide pipes, and the flow guide pipes on the front and rear partition plates constitute the liquid passing channel. The blowout cylinder with such structure facilitates the setting of the partition and the demisting structure, and facilitates the disassembly, cleaning and replacement of the demisting structure.

[0017] Further, the front cylinder body and the rear cylinder body are butted by flanges, at least one of the front partition plate and the rear partition plate has an inner recess structure to form a sandwich layer therebetween, and the demisting structure is fixedly clamped in the sandwich layer. With such a structure, the demisting structure can be directly fixed between the front and rear partition plates by the sandwich layer space, facilitating assembly of the demisting structure.

[0018] As another optimization, the ignition device has an arc-shaped ignition head extending around the blowout cylinder, and a large number of ignition holes are distributed on the front end arc surface of the arc-shaped ignition head. By igniting through the arc-shaped ignition head, the ignition flame is dispersed and has a wide coverage, which not only improves the reliability of ignition, but also reduces the probability of being extinguished.

[0019] Specifically, the ignition device includes an ignition gas supply pipe extending along the blowout cylinder, the rear end of the ignition gas supply pipe is connected with an arc-shaped distribution pipe, a plurality of gas distribution pipes are communicated on the arc-shaped distribution pipe, and the plurality of gas distribution pipes are communicated with the arc-shaped ignition head. Such a structure can more uniformly supply gas to the arc-shaped ignition head, ensuring the uniformity of the flame distribution of the arc-shaped ignition head.

[0020] In addition, the blowout pipe is provided with a diameter-increasing pressure-reducing section with an increasing inner diameter from front to back, for reducing the blowout pressure. In this way, the impact force of the blowout liquid impacting on the counter-impact piece can be reduced, the service life of the counter-impact piece is prolonged, and the degree of splashing of the blowout liquid in the blowout cylinder is also avoided. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a perspective view of the high-yield water and gas well blowout burner according to Embodiment One of the present application, in an exploded view from a perspective angle;

[0022] Figure 2 is a front view of the high-yield water and gas well blowout burner according to Embodiment One of the present application, in an exploded view from a perspective angle;

[0023] Figure 3 is a top view of the high-yield water and gas well blowout burner according to Embodiment One of the present application, in an exploded view from a perspective angle;

[0024] Figure 4 is a right view of the high-yield water and gas well blowout burner according to Embodiment One of the present application. Figure 3

[0025] In the figure: 10, front cylinder body; 11, rear cylinder body; 12, flange; 13, gas overflow hole; 14, flow guide pipe; 15, blowout pipe; 100, front partition plate; 110, rear partition plate; 150, diameter-increasing pressure-reducing section; 2, demisting structure; 30, ignition gas supply pipe; 31, arc-shaped distribution pipe; 32, gas distribution pipe; 33, arc-shaped ignition head; 34, ignition hole; 4, counter-impact piece. DETAILED DESCRIPTION

[0026] ​In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application, i.e., the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. The components of the embodiments of the present application generally described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of the present application.

[0028] It should be noted that the relational terms such as "first" and "second" and the like are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the phrase "including a" does not exclude the presence of additional identical elements in the process, method, article or device including the element.

[0029] The features and performances of the present application will be further described in detail below with reference to the embodiments.

[0030] Specific embodiment one of the high-yield water and gas well blowout burner of the present application:

[0031] The structure of the high-yield water and gas well blowout burner of the present embodiment is shown in Figures 1-4 When in use, it is placed horizontally. For ease of description, the left end is defined as the front end and the right end is defined as the rear end in the attitude shown in Figure 1

[0032] The high-yield water and gas well blowout burner of the present embodiment includes a blowout cylinder arranged horizontally along an axis. The front end of the blowout cylinder has a sealing plate, and the rear end is open. A blowout pipe 15 is mounted at a middle position of the sealing plate, and the blowout pipe 15 extends into the blowout cylinder from the outside of the front end of the blowout cylinder. One end of the blowout pipe 15 outside the front end of the blowout cylinder is used to connect a blowout pipe line, and the gas-liquid mixture in the blowout pipe line can be blown out from the end of the blowout pipe 15 extending into the blowout cylinder.

[0033] ​The blow-off cylinder is a split structure, specifically comprising an axially butted front cylinder body 10 and a rear cylinder body 11, a sealing plate is arranged at the front end of the front cylinder body 10, the rear end of the front cylinder body 10 is connected with a front partition plate 100, the front end of the rear cylinder body 11 is connected with a rear partition plate 110, the rear end of the front cylinder body 10 and the front end of the rear cylinder body 11 are respectively provided with flanges 12, and the two are fixedly connected through the flanges 12. The front partition plate 100 and the rear partition plate 110 jointly constitute a partition that separates the inner cavity of the blow-off cylinder into front and rear cavities.

[0034] The part of the blow-off pipe 15 that extends into the blow-off cylinder is located at the front side of the front partition plate 100, and a back-impact piece 4 is fixed on the front partition plate 100 at a position opposite the nozzle of the blow-off pipe 15. The back-impact piece 4 is used to disperse the sprayed gas-liquid mixture when the blow-off pipe 15 sprays the gas-liquid mixture into the blow-off cylinder. In this way, the liquid falls under the action of gravity, allowing the gas and liquid to be better separated. In the present embodiment, the preferred back-impact piece 4 is a bowl-shaped cover with an opening facing the nozzle of the blow-off pipe 15. This allows the sprayed gas-liquid mixture to impact the back-impact piece 4 and then splash in the opposite direction, completing the first separation in the front side cavity of the blow-off cylinder.

[0035] A large number of discrete through holes are arranged on the upper half of the front partition plate 100, and a large number of discrete through holes are arranged on the rear partition plate 110 as a whole. The separated gas in the gas-liquid mixture can flow from the front side inner cavity to the rear side inner cavity of the blow-off cylinder through the through holes on the front partition plate 100 and the rear partition plate 110. A flow guide pipe 14 extending frontward and rearward is arranged on the lower half of the front partition plate 100, and a flow guide pipe 14 corresponding to the flow guide pipe 14 on the front partition plate 100 is also arranged on the rear partition plate 110. The two flow guide pipes 14 are in communication, and the separated and falling liquid in the gas-liquid mixture can flow from the front side inner cavity to the rear side inner cavity of the blow-off cylinder through the flow guide pipes 14.

[0036] A large number of through holes penetrating the cylinder wall are discretely distributed on the entire cylinder wall of the rear cylinder body 11. These through holes, especially the upper part, can allow the gas flowing from the front side cavity to the rear side cavity to overflow the blow-off cylinder, and are referred to as overflow holes 13. The liquid flowing from the flow guide pipe 14 to the rear side cavity is mostly discharged from the rear end of the blow-off cylinder into the blow-off pool, and can also flow out from the through holes on the lower side of the rear cylinder body. These liquid outlets are referred to as discharge ports.

[0037] The front partition plate 100 and the rear partition plate 110 are punched to form a disc-shaped inner recessed structure. After the front cylinder body 10 and the rear cylinder body 11 are butted by the flange 12, a flying disc-shaped interlayer space is formed between the front partition plate 100 and the rear partition plate 110, and the demisting structure 2 is clamped in the interlayer space. The demisting structure 2 is limited and fixed in the interlayer space in accordance with the shape of the interlayer space. The demisting structure 2 can filter the gas flowing from the upper side of the blowout cylinder cavity to the rear, separate the water in the gas, and make the water flow downward and be discharged from the flow guide pipe 14. The demisting structure 2 can also filter the liquid flowing from the lower side of the blowout cylinder cavity to the rear, separate the gas in the liquid, and make the gas flow upward to the rear cavity through the through hole in the upper side of the rear partition plate 110, that is, the secondary separation is realized.

[0038] Moreover, when the liquid is accumulated in the demisting structure due to a large amount of blowout, and the liquid cannot be completely discharged from the flow guide pipe, part of the accumulated liquid flows to the rear cavity of the blowout cylinder through the through hole in the rear partition plate. In this process, the through hole in the rear partition plate can also disperse the blowout liquid and play a certain gas-liquid separation role.

[0039] Specifically, in the embodiment, the demisting structure 2 includes a wire mesh gasket, a shock-absorbing wire mesh, and a sound-absorbing mesh, so that the gas separation is realized while the shock absorption and sound absorption are realized. Of course, in other embodiments, other existing gas-liquid separation meshes or gas-liquid separation membranes can also be used.

[0040] The upper side of the blowout cylinder is also provided with an ignition device for igniting the gas flowing out of the overflow hole 13. In the embodiment, the ignition device includes an ignition gas supply pipe 30 extending in the axial direction of the blowout cylinder and an arc-shaped shunt pipe 31 connected to the rear end of the ignition gas supply pipe 30. The arc-shaped shunt pipe 31 extends around the blowout cylinder, and the natural gas flowing out of the ignition gas supply pipe 30 can uniformly fill the arc-shaped shunt pipe 31. Four gas distribution pipes 32 are uniformly and spaced apart in the arc length direction of the arc-shaped shunt pipe 31, and the four gas distribution pipes 32 extend in the axial direction of the blowout cylinder and are connected to the arc-shaped ignition head 33 at the front end. The arc-shaped ignition head 33 includes an arc-shaped U-shaped steel, the two ends of the U-shaped steel are blocked, and an arc-shaped sealing plate is connected to the front end, and a large number of ignition holes 34 are distributed on the arc-shaped sealing plate. The natural gas flowing into the arc-shaped ignition head 33 from the arc-shaped shunt pipe 31 through the gas distribution pipe 32 can flow out from the ignition hole 34. The ignition device is also provided with a lighter for igniting the natural gas flowing out of the ignition hole 34. Of course, in other embodiments, the lighter can not be configured, and the combustion-supporting material is manually placed at the ignition head of the ignition device to ignite the ignition device.

[0041] The arc-shaped ignition head 33 extends to the front end of the rear cylinder body 11, i.e., the front part of the large number of discrete overflow holes 13, and the flame of the arc-shaped ignition head 33 is above the overflow holes 13, so that the gas flowing out of the overflow holes 13 can be reliably ignited.

[0042] In addition, the present embodiment contains a more optimized scheme, i.e., the blowout pipe 15 is further provided with a diameter-increasing pressure-reducing section 150 gradually increasing from front to back, and the setting of the diameter-increasing pressure-reducing section 150 can reduce the blowout pressure to a certain extent, avoiding the impact of the gas-liquid mixture on the counter-attack piece 4 being too large.

[0043] The high-yield water-gas well blowout burner of the present application can directly disperse the gas-liquid mixture after blowout through the counter-attack piece, realize primary gas-liquid separation under the action of gravity, and separate the primary separation space from the overflow hole through the setting of the partition, avoiding the blowout liquid pouring to the overflow hole during the primary separation process and extinguishing the burner; the secondary gas-liquid separation can be realized through the setting of the demisting structure, further reducing the water content in the separated gas, ensuring that the gas can be reliably ignited, and avoiding the emission of hydrogen sulfide, carbon monoxide and other gases into the atmosphere. In addition, the arc-shaped ignition head is adopted, so that the flame distribution range of the ignition device is wider and is not easy to be extinguished, ensuring the reliability of ignition.

[0044] The high-yield water-gas well blowout burner of the present application is not limited to the above-mentioned embodiments, but also has many deformation embodiments based on the concept of the present application.

[0045] For example, in another embodiment, unlike the above-mentioned embodiment one, the counter-attack piece adopts a flat plate structure, and the gas-liquid mixture directly impacts the plane of the flat plate to realize dispersion, or the counter-attack piece adopts a conical head, the tip of the conical head faces the blowout pipe, and the gas-liquid mixture is dispersed through the conical surface.

[0046] For example, in another embodiment, unlike the above-mentioned embodiment one, the blowout cylinder is an integrated structure, a circular baffle is fixed on the middle part of the blowout cylinder, the counter-attack piece is fixed on the circular baffle, the upper half of the circular baffle is provided with discrete through holes to form a gas passage, the lower part is provided with a notch to form a flow passage, and the demisting structure is connected to the rear side of the circular baffle, or in this embodiment, the demisting structure is not provided.

[0047] For example, in another embodiment, unlike the above-mentioned embodiment one, the counter-attack piece is fixedly connected to the inner wall of the blowout cylinder through a radially extending rib and is independently arranged with the partition.

[0048] Alternatively, in other embodiments, different from the above-described embodiment one, the demisting structure is semicircular, and only the through hole corresponding to the upper half of the front baffle is provided, only the passing gas is filtered and water removed, at this time the demisting structure is fixedly connected between the two baffles through the screws penetrating through the front and rear baffles and the demisting structure.

[0049] Further alternatively, in other embodiments, different from the above-described embodiment one, the ignition device is an existing single-head ignition device, that is, the front end of the ignition air supply pipe directly extends to above the gas overflow hole to form an ignition head.

[0050] The above is only a preferred embodiment of the present application, and is not used to limit the present application, the patent protection scope of the present application is subject to the claims, any equivalent structural changes made by applying the contents of the specification and drawings of the present application should also be included in the protection scope of the present application.

Claims

1. A high water gas well blow off burner characterized by, The application relates to a blow-off device. The blow-off device comprises a blow-off barrel horizontally extending during use and provided with a sealing plate at the front end; a blow-off pipe penetrating the blow-off barrel from the middle or the vicinity of the middle of the sealing plate and extending into the blow-off barrel, one end of the blow-off pipe outside the blow-off barrel being used for connecting a blow-off pipe line; a reverse-impact part installed in the blow-off barrel and facing the inner end nozzle of the blow-off pipe, used for dispersing the gas-liquid mixture sprayed from the blow-off pipe; a plurality of gas overflow holes discretely distributed on the barrel wall of the blow-off barrel at the rear side of the reverse-impact part and at least on the upper part of the barrel wall, used for the gas in the gas-liquid mixture to flow out of the blow-off barrel; a discharge port provided on the lower part of the blow-off barrel, used for the liquid in the gas-liquid mixture to flow out of the blow-off barrel; an ignition device provided above the outside of the blow-off barrel and extending along the blow-off barrel to the front position of the discretely distributed gas overflow holes, used for igniting the gas flowing out of the blow-off barrel; a partition fixedly arranged in the blow-off barrel and separating the blow-off barrel into two parts, the partition being located at the rear of the reverse-impact part, the gas overflow holes and the discharge port being located at the rear side of the partition, the upper part of the partition being provided with a gas passing channel for the gas in the front side cavity of the blow-off barrel to pass backward, and the lower part of the partition being provided with a liquid passing channel for the liquid in the front side cavity to pass backward. The reverse-impact part (4) is a bowl-shaped cover, and the opening of the bowl-shaped cover faces the nozzle of the blow-off pipe (15). The reverse-impact part (4) is fixedly connected to the partition. The gas passing channel is provided with a demisting structure (2). The blow-off barrel is of a split structure, and the front barrel body (10) and the rear barrel body (11) are butted together; the partition comprises a front partition plate (100) at the rear end of the front barrel body (10) and a rear partition plate (110) at the front end of the rear barrel body (11), the upper half of the front partition plate and the rear partition plate are both provided with discretely distributed through holes, the demisting structure (2) is located between the front partition plate (100) and the rear partition plate (110), the through holes provided on the front partition plate and the rear partition plate form the gas passing channel, and the front partition plate (100) and the rear partition plate (110) are respectively provided with corresponding front and rear flow guide pipes (14), and the flow guide pipes (14) on the front partition plate and the rear partition plate form the liquid passing channel.

2. The high water gas well blowdown burner of claim 1, wherein, The front barrel body (10) and the rear barrel body (11) are butted together through flanges (12), at least one of the front partition plate (100) and the rear partition plate (110) has an inner recess structure to form a sandwich layer between the front partition plate (100) and the rear partition plate (110), and the demisting structure (2) is fixedly sandwiched in the sandwich layer.

3. The high water gas well blowdown burner of claim 1, wherein, The ignition device has an arc-shaped ignition head (33) extending around the blow-off barrel, and a large number of ignition holes (34) are distributed on the front end arc surface of the arc-shaped ignition head (33).

4. The high water gas well blowdown burner of claim 1, wherein, The ignition device comprises an ignition gas supply pipe (30) extending along the blow-off barrel, the rear end of the ignition gas supply pipe (30) is connected with an arc-shaped flow divider (31), a plurality of gas distribution pipes (32) are communicated on the arc-shaped flow divider (31), and the plurality of gas distribution pipes (32) are communicated with the arc-shaped ignition head (33).

5. The high water gas well blowdown burner of claim 4, wherein, The blow-off pipe (15) is provided with an expanding diameter pressure reducing section (150) with an increasing inner diameter from front to rear, so as to reduce the blow-off pressure.

6. The high water gas well blowdown burner of claim 5 wherein, ​ 7. The high water gas well blowdown burner of any one of claims 1-6, wherein, ​ 8. The high water gas well blowdown burner of claim 7, wherein, ​ 9. The high water gas well blowdown burner of any one of claims 1-6, wherein, ​

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