CN220327992U - Oil-gas separation device - Google Patents
Oil-gas separation device Download PDFInfo
- Publication number
- CN220327992U CN220327992U CN202323363406.XU CN202323363406U CN220327992U CN 220327992 U CN220327992 U CN 220327992U CN 202323363406 U CN202323363406 U CN 202323363406U CN 220327992 U CN220327992 U CN 220327992U
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- Prior art keywords
- oil
- overflow weir
- pipe
- tank body
- weir
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- 238000000926 separation method Methods 0.000 title claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 238000005192 partition Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 12
- 239000003921 oil Substances 0.000 description 49
- 235000019198 oils Nutrition 0.000 description 44
- 239000007787 solid Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000003129 oil well Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 235000019476 oil-water mixture Nutrition 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Separating Particles In Gases By Inertia (AREA)
Abstract
The utility model discloses an oil-gas separation device, which belongs to the technical field of gas-liquid separation equipment, and comprises a tank body, wherein a feed pipe and a drain pipe are arranged on the tank body, three overflow weirs are longitudinally arranged between the feed pipe and the drain pipe, a second overflow weir is positioned between a first overflow weir and a third overflow weir, and the lower ends of the first overflow weir and the second overflow weir are connected in a sealing way through a sealing baffle plate to form an oil buffer cavity; the bottom of the oil buffer cavity is spaced from the inner wall of the tank body by a certain distance, and the third overflow weir is positioned between the second overflow weir and the drain pipe and is spaced from the second overflow weir by a certain distance; the upper end of the third overflow weir is higher than the lower end of the first overflow weir, so that the oil-water boundary is positioned between the upper end and the lower end of the first overflow weir. According to the utility model, the oil-water boundary position in the tank body is automatically and synchronously adjusted through the overflow weir, so that the position of the oil-water boundary position can be stabilized, and the oil-water separation efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of gas-liquid separation, also relates to the technical field of oil-gas exploitation engineering, and in particular relates to an oil-gas separation device.
Background
The components of the products extracted from the oil well are complex, mainly including gas, oil, water, solid particles and the like, and the separation of the products is an important link in the oil-gas storage and transportation and application processes. The oil-gas separation device is a device for separating crude oil, associated gas and the like extracted from an oil field.
Referring to fig. 1, an overflow weir 210 is longitudinally arranged in a tank body 100 of the horizontal separation tank, effluent of an oil well enters the tank body 100 through a feed pipe 101 and is separated according to density difference, separated gas is discharged from an exhaust pipe 102 positioned at the top of the tank body 100, oil, water and solids are gradually separated in the horizontal movement process of the tank body 100, separated oil overflows from the upper end of the overflow weir 210 and is discharged through an oil discharge pipe 103, and water is discharged through a drain pipe 104 positioned at the upstream of the overflow weir 210; referring to fig. 2, the drain pipe 104 is disposed downstream of the drain pipe 103, so as to increase the path of water in the tank 100 and facilitate the sedimentation of solids, two overflow weirs 210 are longitudinally disposed in the tank 100, the lower ends of the two baffles are hermetically connected by a sealing plate 220, thereby forming an oil buffer cavity 200, the separated oil overflows into the oil buffer cavity 200 through the upper end of the overflow weirs 210, and is further discharged through the drain pipe 103 communicating with the oil buffer cavity 200, and the separated water finally passes through the space below the oil buffer cavity 200 and is discharged from the drain pipe 104.
In the two modes, the oil-water interface is always in a fluctuation state under the influence of wellhead effluent and displacement, for example, when wellhead effluent is increased and displacement is not synchronously increased, the oil-water separation interface is raised, wellhead effluent is reduced and displacement is not synchronously reduced, the oil-water separation interface is lowered, and oil-water vertical movement and mixing are caused by fluctuation of the oil-water interface, so that the oil-water separation effect is reduced.
Disclosure of Invention
In order to solve the problems, the utility model provides the oil-gas separation device which utilizes the overflow principle to separate oil and water, and has strong stability of an oil-water interface and good oil-water separation effect.
The specific scheme of the utility model is as follows:
the oil-gas separation device comprises a tank body, wherein two overflow weirs, namely a first overflow weir and a second overflow weir, are longitudinally arranged in the tank body, and the lower ends of the two overflow weirs are connected in a sealing way through a sealing partition plate, so that an oil buffer cavity with an upper opening is formed; the improvement of the utility model is that a third overflow weir which is connected with the bottom of the tank body in a sealing way is also longitudinally arranged in the tank body, is called a third overflow weir and is positioned between the second overflow weir and the drain pipe and is separated from the second overflow weir by a certain distance, thus forming a second channel communicated with the first channel; the upper end of the third overflow weir is higher than the lower end of the first overflow weir, so that the oil-water boundary is positioned between the upper end and the lower end of the first overflow weir.
In one embodiment of the present utility model, the upper end of the first overflow weir is lower than the upper end of the second overflow weir, and the upper end of the third overflow weir is located between the upper ends of the first overflow weir and the second overflow weir.
As a specific implementation mode of the utility model, the tail end of the feeding pipe is connected with a bent pipe, the bent pipe is positioned in the tank body, and a through hole is formed in the inner side of the bent pipe.
As a specific embodiment of the utility model, the baffle plate is detachably connected with two overflow weirs of the oil buffer cavity in a sealing way, and the oil discharge pipeline is detachably connected with the tank body.
As a specific embodiment of the utility model, the tank body further comprises an exhaust pipe, and an inlet of the exhaust pipe is positioned above the oil buffer cavity or between the oil buffer cavity and the feed pipe.
As a specific embodiment of the utility model, the exhaust pipe is provided with a demister part for reducing the amount of liquid entrained in the gas.
As a specific embodiment of the utility model, the outlet of the feeding pipe is provided with a baffle plate.
Compared with the prior art, the utility model has the following advantages: according to the utility model, through the cooperation of the overflow weirs, the oil-water interface in the tank body can be automatically and synchronously adjusted, the anti-interference capability is strong, and the increase and decrease of the inlet and outlet flow of the tank body has little interference on the oil-water interface, so that the stability of the oil-water interface is improved, and the oil-water separation efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of a prior art oil-gas separator;
FIG. 2 is a schematic diagram of another prior art oil-gas separator;
FIG. 3 is a schematic diagram of an embodiment of an oil and gas separator of the present utility model;
FIG. 4 is a schematic illustration of the oil and gas separation device of FIG. 3 in an operating state;
FIG. 5 is a schematic diagram of an alternative embodiment of an oil and gas separator device according to the present utility model;
FIG. 6 is a schematic illustration of the oil and gas separation device of FIG. 5 in an operating state;
FIG. 7 is a cross-sectional view of the combination of the elbow and feed tube of the oil and gas separator of FIG. 5;
in the figure, a tank 100; an oil buffer chamber 200; a baffle 300;
overflow weir 210; a closing plate 220;
a feed pipe 101; an exhaust pipe 102; an oil drain pipe 103; a drain pipe 104;
a first overflow weir 211; a second weir 212; a third weir 213;
bent pipe 1011; demister 1021.
Detailed Description
The present utility model will be described in further detail with reference to examples and drawings, but embodiments of the present utility model are not limited thereto.
Examples: fig. 1 and 2 are schematic structural diagrams of two different oil-gas separation devices in the prior art, please refer to fig. 1, an overflow weir 210 is longitudinally arranged in a tank body 100 of a horizontal separation tank, effluent of an oil well enters the tank body 100 through a feed pipe 101, then is separated according to density difference, separated gas is discharged from an exhaust pipe 102 positioned at the top of the tank body 100, oil, water and solids are gradually separated in the horizontal movement process in the tank body 100, separated oil overflows from the upper end of the overflow weir 210 and is discharged through an oil discharge pipe 103, and water is discharged through a drain pipe 104 positioned at the upstream of the overflow weir 210; referring to fig. 2, the drain pipe 104 is disposed downstream of the drain pipe 103, so as to increase the path of water in the tank 100 and facilitate the sedimentation of solids, two overflow weirs 210 are longitudinally disposed in the tank 100, the lower ends of the two baffles are hermetically connected by a sealing plate 220, thereby forming an oil buffer cavity 200, the separated oil overflows into the oil buffer cavity 200 through the upper end of the overflow weirs 210, and is further discharged through the drain pipe 103 communicating with the oil buffer cavity 200, and the separated water finally passes through the space below the oil buffer cavity 200 and is discharged from the drain pipe 104. The two devices have the problem of large fluctuation of an oil-water interface, which reduces the oil-water separation effect.
Referring to fig. 3 to 7, which show structures of two different embodiments of the oil-gas separation device of the present utility model, the oil-gas separation device of the present utility model includes a tank 100, two overflow weirs, a first overflow weir 211 and a second overflow weir 212 are longitudinally disposed in the tank 100, and lower ends of the two overflow weirs 210 are hermetically connected by a sealing plate 220, so as to enclose an oil buffer chamber 200 with an upper opening; the bottom of the oil buffer chamber 200 is spaced from the inner wall of the tank body 100 by a certain distance, so that a first channel for water supply flow is formed between the bottom of the oil buffer chamber 200 and the inner wall of the tank body 100, the oil buffer chamber 200 is connected with an oil drain pipe 103 penetrating through the tank body 100 and being in sealing connection with the tank body 100, the tank body 100 is provided with a drain pipe 104 and a feed pipe 101, the drain pipe 104 and the feed pipe 101 are respectively positioned at two sides of the oil buffer chamber 200, a first overflow weir 211 is positioned between a second overflow weir 212 and the feed pipe 101, the above characteristics are all of the prior art, and specific structures are not described in detail herein. The improvement of the utility model is that a third overflow weir which is hermetically connected with the bottom of the tank body 100 is also longitudinally arranged in the tank body 100 and is called a third overflow weir 213, the third overflow weir 213 is positioned between the second overflow weir 212 and the drain pipe 104 and is separated from the second overflow weir 212 by a certain distance, thereby forming a second channel communicated with the first channel for water supply circulation; the upper end of the third weir 213 is higher than the lower end of the first weir 212 such that the oil-water boundary is located between the upper and lower ends of the first weir 211.
Referring to fig. 4, the liquid level in the oil buffer chamber 200 is controlled to be lower than the upper end of the first overflow weir 211 by controlling the flow rate of the oil drain pipe 103; by controlling the flow rate of the drain pipe 104, the liquid level above the drain pipe 104 is controlled to be lower than the upper end of the third overflow weir 213, so that the flow rate of the fluid entering the oil buffer cavity 200 and above the drain pipe 104 can be automatically and synchronously adjusted in an overflow manner no matter how the flow rate of the material entering the tank body 100 from the feed pipe 101 changes, thereby maintaining the stability of the oil-water separation boundary in the tank body 100, and similarly, the flow rate changes in the drain pipe 103 and the drain pipe 104 only affect the liquid level above the oil buffer cavity 200 and the drain pipe 104, and the oil-water boundary in the tank body 100 cannot be affected.
In the present utility model, the height of the upper end of the first overflow weir 211 is adjusted to reduce the oil-water boundary, and the height of the upper end of the third overflow weir 213 is adjusted to increase the oil-water boundary, and the specific principle is referred to as a U-pipe connector, and will not be described in detail herein. In some embodiments, the upper ends of the first overflow weir 211 and the second overflow weir 212 may have the same height as shown in fig. 3 and are higher than the upper end of the third overflow weir 213, and in other embodiments, as shown in fig. 5 and 6, the upper end of the first overflow weir 211 is lower than the upper end of the second overflow weir 212, and the upper end 213 of the third overflow weir is located between the upper ends of the first overflow weir 211 and the second overflow weir 212, so that the oil-water separation interface may be raised, resulting in an increased water storage space and an increased residence time, which is beneficial for precipitation of solid matters.
In the present utility model, the materials entering the tank 100 are three-phase mixtures of oil, water and gas, and after the mixtures enter the tank 100 from the feed pipe 101, part of the gas is entrained into the liquid (oil-water mixture) and moves horizontally towards the outlet (i.e. the drain pipe 104 and the drain pipe 103), meanwhile, the gas floats upwards due to low density, the oil-water interface is disturbed when the gas passes through the oil-water interface, and when the carrying gas amount is large, even a large amount of water in the water phase is carried into the upper oil phase, so that the oil-water separation effect is seriously affected, and therefore, the separation of the gas needs to be enhanced. Thus, in some embodiments, as shown in fig. 5, the end of the feeding pipe 101 is connected to an elbow 1011, the elbow 1011 is located in the tank 100, and as shown in fig. 7, a through hole is provided on the inner side of the elbow 1011, which can realize preliminary separation of gas and liquid by using inertia of wellhead effluent, and separated gas is discharged from the through hole on the inner side of the elbow 1011. Specifically, when the wellhead effluent flows through the bent pipe 1011, the high density liquid and solid will move to the outside of the bent pipe 1011 due to the different density of the mixture, and the low density gas will move to the inside of the bent pipe 1011, thereby precipitating the gas inside the bent pipe 1011.
In the utility model, solid particles are deposited below the oil buffer cavity 200, and in order to facilitate the later tank cleaning, the sealing plate 220 is detachably connected with two overflow weirs 210 of the oil buffer cavity 200 in a sealing manner, and the oil drain pipe 103 is detachably connected with the tank body 100, so that the tank is convenient to clean after the disassembly.
In some embodiments, in order to reduce the liquid content of the gas in the exhaust pipe 102, a demister member 1021, such as a wire demister, may be provided in the exhaust pipe 102 or at the inlet of the exhaust pipe 102.
In the present utility model, a small amount of liquid may be collected at the inlet of the exhaust pipe 102 and drop down, and the liquid contains water and oil, and in some embodiments, the inlet of the exhaust pipe 102 is disposed above the oil buffer chamber 200 as shown in fig. 3, and in other embodiments, the inlet of the exhaust pipe 102 may be disposed between the oil buffer chamber 200 and the feed pipe 101.
In some embodiments, the inlet pipe 101 outlet is provided with a baffle 300 for changing the flow direction of the fluid so that the fluid falls from one end of the tank 100, thereby increasing its residence time in the tank 100 and thus increasing the separation effect.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the technical scope of the present utility model disclosed in the embodiments of the present utility model should be covered by the present utility model.
Claims (7)
1. The oil-gas separation device comprises a tank body, wherein a first overflow weir and a second overflow weir are longitudinally arranged in the tank body, and the lower ends of the two overflow weirs are connected in a sealing way through a sealing partition plate, so that an oil buffer cavity with an upper opening is formed; the bottom of the oil buffer cavity with the inner wall interval of the jar body is a certain distance, thereby be in the bottom of oil buffer cavity with form the first passageway that supplies water to flow between the jar body, the oil buffer cavity is connected with and passes the oil drain pipeline of the jar body, be equipped with drain pipe and inlet pipe on the jar body, just the drain pipe with the inlet pipe is located respectively the both sides of oil buffer cavity, first overflow weir is located between second overflow weir and the inlet pipe, its characterized in that: a third overflow weir which is in sealing connection with the bottom of the tank body is longitudinally arranged in the tank body, and the third overflow weir is positioned between the second overflow weir and the drain pipe and is separated from the second overflow weir by a certain distance, so that a second channel communicated with the first channel is formed; the upper end of the third overflow weir is higher than the lower end of the first overflow weir, so that an oil-water boundary position is positioned between the upper end and the lower end of the first overflow weir.
2. The oil and gas separator of claim 1, wherein the upper end of the first weir is lower than the upper end of the second weir, and the upper end of the third weir is positioned between the upper ends of the first and second weirs.
3. The oil-gas separation device according to claim 1, wherein the end of the feed pipe is connected with a bent pipe, the bent pipe is located in the tank body, and a through hole is formed in the inner side of the bent pipe.
4. The oil and gas separator of claim 1, wherein the baffle plate is detachably connected to two weirs of the oil buffer chamber, and the oil drain pipe is detachably connected to the tank.
5. The oil-gas separation device according to claim 1, wherein the tank further comprises an exhaust pipe, and an inlet of the exhaust pipe is located above the oil buffer chamber or between the oil buffer chamber and the feed pipe.
6. The oil-gas separation device according to claim 5, wherein the exhaust pipe is provided with demister members.
7. The oil and gas separation device according to claim 1, wherein the inlet pipe outlet is provided with a baffle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323363406.XU CN220327992U (en) | 2023-12-11 | 2023-12-11 | Oil-gas separation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323363406.XU CN220327992U (en) | 2023-12-11 | 2023-12-11 | Oil-gas separation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220327992U true CN220327992U (en) | 2024-01-12 |
Family
ID=89459808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323363406.XU Active CN220327992U (en) | 2023-12-11 | 2023-12-11 | Oil-gas separation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220327992U (en) |
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2023
- 2023-12-11 CN CN202323363406.XU patent/CN220327992U/en active Active
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