Blowout pool for sulfur-containing gas well

Abstract

The utility model relates to the field of oil and gas exploitation, in particular to a blowout pool for a sulfur-containing gas well, which comprises a combustion cylinder, an ignition system and a spraying system. And the combustion cylinder is arranged in the blowout pool body and is communicated with the tail end of the blowout pipeline. The ignition system comprises a spark plug, and the spark plug is located above the combustion cylinder. The spraying system comprises a spraying pipe, the spraying pipe is located above the open flow pool body, the spraying pipe is used for spraying alkaline liquid, and the spraying range of the spraying pipe can cover the whole open flow pool body. The spraying system capable of spraying the alkaline liquid is arranged above the blowout pool body, so that the alkaline liquid and hydrogen sulfide gas leaked from the combustion cylinder are subjected to neutralization reaction, and leakage and diffusion of the hydrogen sulfide gas can be effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil and gas exploitation field especially a kind of for sulfur-containing gas well blowout pond. BACKGROUND

[0002] Sulfur-containing natural gas exploitation is an important part of natural gas industry, and hydrogen sulfide (H2S) is a colorless and highly toxic acid gas, its density is slightly greater than air, easy to accumulate in low-lying area, thus forming potential danger zone. Even in low concentration state, hydrogen sulfide also poses a threat to human health, and high concentration exposure can quickly lead to fatal consequences. Therefore, sulfur-containing gas well blowout test gas, plugging is a high-risk operation, but with gas field development, pressure decline, elemental sulfur precipitation, formation pollution, water invasion and other reasons will seriously affect gas well production.

[0003] In order to effectively dredge wellbore or formation blockage, and delay the trend of production decline, the methods commonly used at present include acidizing, blowout and plugging and oil well connection. A widely used practice is to guide natural gas to a blowout pond for combustion to prevent the diffusion of hydrogen sulfide. However, when the hydrogen sulfide content of some gas wells is high and the water production is large, the combustion of the blowout port is not sufficient, and the leakage and diffusion of hydrogen sulfide cannot be well controlled, which seriously affects the safety of the surrounding environment and personnel. SUMMARY

[0004] The utility model aims at overcoming the deficiency that when the hydrogen sulfide content of some gas wells is high and the water production is large, the combustion of the blowout port is not sufficient, and the leakage and diffusion of hydrogen sulfide cannot be well controlled, and provides a blowout pond for sulfur-containing gas wells.

[0005] The utility model provides a kind of blowout pond for sulfur-containing gas well, comprising:

[0006] Combustion cylinder, the combustion cylinder is arranged in blowout pond body, the combustion cylinder is communicated with the end of blowout pipeline.

[0007] Ignition system, the ignition system includes spark plug, the spark plug is located above the combustion cylinder.

[0008] Spray system, the spray system includes spray pipe, the spray pipe is located above the blowout pond body, the spray pipe is used to spray alkaline liquid, the spray range of the spray pipe can cover the entire blowout pond body.

[0009] This invention provides a venting pool for sulfur-containing gas wells. The venting pipeline transports the material ejected from the gas well to the combustion chamber, which burns the liquid or gas transported from the venting pipeline. A spark plug ignites the combustible gas or liquid in the combustion chamber. The combustion chamber is arranged within the venting pool body to prevent flame overflow during combustion, thus avoiding pollution to the surrounding environment. The venting pool body also collects unburned and incompletely burned liquids for subsequent centralized treatment, further ensuring environmental protection. A spray pipe sprays an alkaline liquid, covering the entire venting pool body. The main function of the alkaline liquid is to neutralize hydrogen sulfide gas that may leak from the combustion chamber due to incomplete combustion. By spraying the alkaline liquid into the venting pool body, the spray pipe increases the contact area between the alkaline liquid and the hydrogen sulfide gas, effectively reducing hydrogen sulfide leakage and diffusion.

[0010] The alkaline liquid may be at least one of sodium bicarbonate solution, sodium hydroxide solution, calcium hydroxide solution, or calcium bicarbonate solution.

[0011] Preferably, the alkaline liquid is a sodium hydroxide solution and / or a calcium hydroxide solution. The alkaline liquid can be either a sodium hydroxide solution or a calcium hydroxide solution, or a mixture of sodium hydroxide and calcium hydroxide.

[0012] The spray pipes can be arranged in a staggered net above the main body of the spray pool, or several spray pipes can be arranged side by side along a certain horizontal direction, or they can be arranged on the pool wall around the main body of the spray pool.

[0013] Preferably, the spray pipe includes a first spray pipe and a second spray pipe. The first spray pipe is arranged horizontally along the wall of the effluent pool body, and the second spray pipe is located above the effluent pool body. Both ends of the second spray pipe are connected to the first spray pipe. Both the first and second spray pipes are equipped with a plurality of nozzles, all of which face the inner side of the effluent pool body. The nozzles are used to spray the alkaline liquid into the effluent pool body. In this design, the first spray pipe can be fixed to the wall of the effluent pool body, and in conjunction with the second spray pipe, the spraying effect can achieve complete coverage of the effluent pool body.

[0014] The first nozzle can be arranged between half the height and the highest point of the pool wall of the venting pool body.

[0015] Preferably, the spraying system further includes a storage tank, a booster pump, and a valve. The storage tank is connected to the first spray pipe via a pipeline. The booster pump and the valve are located on the pipeline. The storage tank is used to store the alkaline liquid. The valve is used to control the opening and closing of the spraying system, and the booster pump is used to deliver the alkaline liquid from the storage tank to the first spray pipe.

[0016] Preferably, the first nozzle is positioned at the highest point of the pool wall of the venting pool body. This arrangement allows the sprayed liquid to more effectively cover the entire area of ​​the venting pool body, further enhancing the reaction effect between the alkaline liquid and the hydrogen sulfide gas.

[0017] Preferably, a water collection pit is provided at the bottom of the blowhole body, and the water collection pit is lower than the bottom of the blowhole body. The water collection pit is used to collect the liquid in the blowhole body for subsequent treatment.

[0018] Preferably, the sump is equipped with a drainage pump, and a drainage pipe is connected to the drainage pump, with the other end of the drainage pipe located outside the main body of the effluent pool. The drainage pump and the drainage pipe are used to centrally discharge the liquid collected in the sump to the outside of the effluent pool for appropriate treatment. This design allows personnel to avoid entering the interior of the effluent pool for wastewater removal, reducing the risk of personnel poisoning.

[0019] The drain pipe can pass through the wall of the fountain body to the outside of the fountain body, or it can be turned over the top of the wall of the fountain body to the outside of the fountain body.

[0020] Preferably, the wall of the effluent pool has an opening through which the drain pipe passes. This design can shorten the length of the drain pipe.

[0021] Preferably, the ignition system further includes an igniter, and the spark plug is connected to the igniter via a cable. The igniter is located outside the venting pool body and is connected to an external power source. This solution has two key functions: first, it can ignite the combustible gas or liquid in the combustion chamber when the venting operation begins; second, if the flame goes out or significantly decreases during combustion, the ignition system can reignite the combustible gas or liquid in the combustion chamber, reducing the prolonged leakage of sulfur-containing combustible gas. The igniter can be positioned away from the venting pool body to facilitate safe control of the spark plug by operators.

[0022] Preferably, the bottom and walls of the spouting pool are both constructed of concrete, and both the bottom and walls are provided with a waterproof layer. This waterproof layer prevents liquid from the spouting pool from seeping through the concrete into the surrounding soil, thus avoiding environmental pollution.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0024] This invention provides a blowout pool for sulfur-containing gas wells. By setting a spray system above the blowout pool body that can spray alkaline liquid, the alkaline liquid can neutralize the hydrogen sulfide gas leaking from the combustion chamber, thereby effectively reducing the leakage and diffusion of hydrogen sulfide gas. Attached Figure Description

[0025] Fig. 1 This is a schematic plan view of a blowout pool for a sulfur-containing gas well.

[0026] Fig. 2 This is a schematic diagram of a sprinkler system.

[0027] Fig. 3 This is a schematic diagram of an ignition system.

[0028] Fig. 4 This is a schematic elevation view of the sump area.

[0029] Marked in the image:

[0030] 1- The main body of the blowhole,

[0031] 101-pool wall,

[0032] 2-Spray pipe,

[0033] 201 - First nozzle, 202 - Second nozzle, 203 - Nozzle

[0034] 3-Sump pit,

[0035] 4-Combustion tube,

[0036] 5-Spark plug,

[0037] 6-Vent pipe,

[0038] 7-Liquid storage tank,

[0039] 701-Level Gauge

[0040] 8-Boost pump,

[0041] 9-Valve,

[0042] 10-Pressure gauge,

[0043] 11-Cable,

[0044] 12-Igniter,

[0045] 13-External power supply,

[0046] 14-Drainage pump,

[0047] 15-Drain pipe,

[0048] 16-Connector

[0049] 17-Liquid level gauge,

[0050] 18 - Ground. Detailed Implementation

[0051] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0052] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0053] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0054] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0055] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0056] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0057] Example 1

[0058] like Figs. 1 to 4 As shown, a venting pool for sulfur-containing gas wells includes a venting combustion cylinder 4, an ignition system, and a spraying system.

[0059] The combustion cylinder 4 is arranged in the venting pool body 1, and the combustion cylinder 4 is connected to the end of the venting pipeline 6. The venting pipeline 6 is connected to the gas well. The high-sulfur, high-water-yield natural gas in the gas well is guided to the venting pool body 1 through the venting pipeline 6 and burned through the combustion cylinder 4. The unburned liquid flows into the venting pool body 1 for temporary storage.

[0060] The bottom of the fountain body 1 is lower than the ground level 18, while the top of the pool wall 101 is higher than the ground level 18. The fountain body 1 has a cuboid structure, with its bottom 2 to 4 meters lower than the ground level 18, and the tops of at least three of its pool walls 101 being 3 to 5 meters higher than the ground level 18. The length and width of the fountain body 1 can be 20 meters × 10 meters, 18 meters × 8 meters, or 13 meters × 7 meters, etc.

[0061] The ignition system includes a spark plug 5, which is located above the combustion cylinder 4, and the distance between the spark plug 5 and the combustion cylinder 4 is 5cm to 20cm.

[0062] The spraying system includes a spray pipe 2, which is located above the main body 1 of the effluent pool. The spray pipe 2 is used to spray alkaline liquid, and the spraying range of the spray pipe 2 can cover the entire main body 1 of the effluent pool.

[0063] In an optional embodiment, the alkaline liquid may be a sodium hydroxide solution and / or a calcium hydroxide solution. Specifically, the alkaline liquid may be a sodium hydroxide solution or a calcium hydroxide solution, or it may be a mixed solution of sodium hydroxide and calcium hydroxide prepared in a certain proportion.

[0064] In an optional embodiment, the spray pipe 2 may include a first spray pipe 201 and a second spray pipe 202. The first spray pipe 201 is arranged along the horizontal direction of the pool wall 101 of the spray pool body 1. The second spray pipe 202 is located above the spray pool body 1. The two ends of the second spray pipe 202 are connected to the first spray pipe 201 on the pool walls 101 on both sides of the spray pool body 1. Both the first spray pipe 201 and the second spray pipe 202 are provided with a plurality of nozzles 203, and the nozzles 203 are all facing the inner side of the spray pool body 1.

[0065] Spray pipe 2 can be made of steel pipe with sulfur resistance, alkali resistance and high temperature resistance.

[0066] In an optional embodiment, the spraying system may further include a storage tank 7, a booster pump 8, and a valve 9. The storage tank 7 is connected to the first spray pipe 201 via a pipeline. The booster pump 8 and the valve 9 are located on the pipeline. The storage tank 7 is used to store the alkaline liquid. A pressure gauge 10 is also installed on the pipeline between the booster pump 8 and the valve 9. The pressure gauge 10 is used to observe the pressurization status of the booster pump 8, and the valve 9 is used to control the pressurization power, thereby adjusting the spray flow rate of the nozzle 203. A level gauge 701 may be installed in the storage tank 7 to observe the remaining liquid in the storage tank 7 so that the corresponding liquid can be added in a timely manner.

[0067] In an optional embodiment, the first nozzle 201 can be arranged at the highest point of the pool wall 101 of the sprinkling pool body 1. Specifically, the first nozzle 201 is arranged horizontally along the top of the pool wall 101 of the sprinkling pool body 1, and the nozzles 203 on the first nozzle 201 are arranged on the same side of the first nozzle 201 and face the inner side of the sprinkling pool body 1. The interval between two adjacent nozzles 203 on the first nozzle 201 is 50mm to 200mm, specifically 50mm, 80mm, 100mm, 130mm, 150mm or 200mm. The two ends of the second nozzle 202 are connected to the middle of the first nozzle 201 on both sides of the pool wall 101 of the sprinkling pool body 1, and the nozzles 203 on the second nozzle 202 are arranged along both sides of the second nozzle 202. The interval between two adjacent nozzles 203 on the same side of the second nozzle 202 is 50mm to 200mm, and the specific interval can be 50mm, 80mm, 100mm, 130mm, 150mm or 200mm.

[0068] In an optional embodiment, a water collection pit 3 can be provided at the bottom of the main body 1 of the effluent fountain, and the water collection pit 3 is lower than the bottom of the main body 1 of the effluent fountain. Specifically, the water collection pit 3 is located at one corner of the main body 1 of the effluent fountain. The depth of the water collection pit 3 can be 1 to 2 meters, and the opening of the water collection pit 3 can be a square with a side length of 1 to 1.5 meters. A liquid level gauge 17 can be provided from the pit wall of the water collection pit 3 to the pool wall 101 of the main body 1 of the effluent fountain to facilitate monitoring of the water level of wastewater or sewage in the water collection pit 3 and the main body 1 of the effluent fountain, so as to quickly determine whether wastewater or sewage removal measures are needed.

[0069] In an optional embodiment, a drainage pump 14 may be installed in the sump 3, and a drainage pipe 15 is connected to the drainage pump 14. The other end of the drainage pipe 15 is located outside the main body 1 of the effluent pool. The drainage pump 14 is used to pump wastewater or sewage from the sump 3 into the drainage pipe 15. A connector 16 is installed at the end of the drainage pipe 15 located outside the main body 1. The connector 16 is for connecting to a vehicle transporting wastewater, thereby facilitating the transfer of wastewater or sewage for subsequent treatment.

[0070] In an optional embodiment, an opening may be provided on the pool wall 101 of the effluent pool body 1, through which a drain pipe 15 can pass. The size of the opening matches the outer diameter of the drain pipe 15.

[0071] In an optional embodiment, the ignition system may further include an igniter 12, with a spark plug 5 connected to the igniter 12 via a cable 11. The igniter 12 is located outside the venting pool body 1 and is connected to an external power supply 13. When energized, the igniter 12 controls the spark plug 5 to generate a spark, which is used to ignite the combustible material in the combustion tube 4. The igniter 12 can be placed at a distance from the venting pool body 1, specifically 50 to 100 meters. By operating the igniter 12, the spark plug 5 can be effectively controlled. This layout aims to prevent construction personnel from directly contacting potentially toxic or harmful substances during operations on the venting pool body 1, thereby ensuring their safety. For example, if the flame in the combustion tube 4 extinguishes due to excessive water volume during venting operations, the ignition system can be used to re-ignite the combustion tube 4.

[0072] In an optional embodiment, the bottom and walls 101 of the blowhole body 1 are both made of concrete, and the bottom and walls 101 of the blowhole body 1 can be provided with a waterproof layer.

[0073] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A blowout pool for sulfur-containing gas wells, characterized in that, include: Combustion cylinder (4), which is arranged in the body (1) of the venting pool, and is connected to the end of the venting pipeline (6); An ignition system, the ignition system including a spark plug (5) located above the combustion chamber (4); The spraying system includes a spray pipe (2) located above the main body (1) of the effluent pool. The spray pipe (2) is used to spray alkaline liquid, and the spraying range of the spray pipe (2) can cover the entire main body (1) of the effluent pool.

2. A blowout pool for sulfur-containing gas wells according to claim 1, characterized in that, The alkaline liquid is a sodium hydroxide solution and / or a calcium hydroxide solution.

3. A blowout pool for sulfur-containing gas wells according to claim 1, characterized in that, The spray pipe (2) includes a first spray pipe (201) and a second spray pipe (202). The first spray pipe (201) is arranged horizontally along the pool wall (101) of the main body (1) of the spray pool. The second spray pipe (202) is located above the main body (1) of the spray pool. Both ends of the second spray pipe (202) are connected to the first spray pipe (201). Both the first spray pipe (201) and the second spray pipe (202) are provided with a plurality of nozzles (203). The nozzles (203) are all facing the inner side of the main body (1) of the spray pool.

4. A blowout pool for sulfur-containing gas wells according to claim 3, characterized in that, The spraying system also includes a storage tank (7), a booster pump (8), and a valve (9). The storage tank (7) is connected to the first spray pipe (201) through a pipeline. The booster pump (8) and the valve (9) are located on the pipeline. The storage tank (7) is used to store the alkaline liquid.

5. A blowout pool for sulfur-containing gas wells according to claim 3, characterized in that, The first nozzle (201) is located at the highest point of the pool wall (101) of the main body (1) of the vent pool.

6. A blowout pool for sulfur-containing gas wells according to any one of claims 1-5, characterized in that, The bottom of the vent pool body (1) is provided with a water collection pit (3), which is lower than the bottom of the vent pool body (1).

7. A blowout pool for sulfur-containing gas wells according to claim 6, characterized in that, The water collection pit (3) is equipped with a drainage pump (14), and a drainage pipe (15) is connected to the drainage pump (14). The other end of the drainage pipe (15) is located outside the body (1) of the effluent pool.

8. A blowout pool for a sulfur-containing gas well according to claim 7, characterized in that, The body (1) of the vent pool has an opening in the pool wall (101), and the drain pipe (15) passes through the opening.

9. A blowout pool for a sulfur-containing gas well according to claim 6, characterized in that, The ignition system also includes an igniter (12), and the spark plug (5) is connected to the igniter (12) via a cable (11). The igniter (12) is located outside the body of the vent pool (1) and is connected to an external power supply (13).

10. A blowout pool for a sulfur-containing gas well according to claim 6, characterized in that, The bottom and walls (101) of the main body (1) of the venting pool are both made of concrete, and the bottom and walls (101) of the main body (1) of the venting pool are both provided with waterproof layers.

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