CN215842026U - Device for oil-gas-water-solid multiphase separation of thickened oil - Google Patents
Device for oil-gas-water-solid multiphase separation of thickened oil Download PDFInfo
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- CN215842026U CN215842026U CN202023120239.2U CN202023120239U CN215842026U CN 215842026 U CN215842026 U CN 215842026U CN 202023120239 U CN202023120239 U CN 202023120239U CN 215842026 U CN215842026 U CN 215842026U
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Abstract
The utility model discloses a device for oil-gas-water-solid multiphase separation of thickened oil, which comprises: the three-phase separation assembly comprises a primary cyclone bin, an air hole partition plate and cyclone guide vanes, wherein a primary cyclone cavity of a hollow structure is formed in the primary cyclone bin, the primary cyclone bin is provided with a plurality of inlets, exhaust pipes and discharge fixing pipes which are communicated with the primary cyclone cavity, the air hole partition plate and the cyclone guide vanes are accommodated in the primary cyclone cavity, and the air hole partition plate is arranged close to the exhaust pipes; the water ring generating assemblies are multiple and are connected with the inlets in a one-to-one correspondence manner; the oil-water separation component is positioned below the first-stage cyclone bin and is communicated with the first-stage cyclone cavity through a filtrate pipe, and the cyclone guide vane is arranged around the filtrate pipe. The multiphase separation device integrates the functions of conveying thickened oil by a water collecting ring, watering and viscosity reduction, cyclone desanding, degassing and dewatering, occupies small space, saves energy, reduces consumption and has high multiphase separation efficiency.
Description
Technical Field
The utility model relates to the technical field of separation equipment, in particular to a device for carrying out oil-gas-water-solid multiphase separation on thickened oil.
Background
At present, as the exploitation of a plurality of oil fields in China enters the middle and later stages, the phenomena of sand content, gas content and water content are generally presented, so that the emulsification phenomenon of thick oil is serious, pipelines are blocked or oil transfer pumps are abraded in the process of treatment and transportation, and the corrosion of the pipelines, valves and containers is aggravated, so that the sand removal, the degassing and the dehydration from the oil are very urgent. However, the separation difficulty of oil, gas, water and solid is increased due to high viscosity, large resistance and poor fluidity of the thickened oil, and the requirement of environmental protection is enhanced, so that higher requirements are provided for the separation effect. In view of the current situation of the currently used separator, most oil fields adopt three-phase separation or multi-stage separation, so that the problems of high investment, large occupied area and the like exist, and the actual requirements of the oil fields cannot be met.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving, at least to some extent, one of the above-mentioned problems in the prior art. In view of the above, the utility model needs to provide a device for oil-gas-water-solid multiphase separation of thick oil, which integrates thick oil conveying by a water collecting ring, water blending viscosity reduction, cyclone desanding, degassing and dehydration, occupies small space, saves energy, reduces consumption and has high multiphase separation efficiency.
The utility model provides a device for oil-gas-water-solid multiphase separation of thickened oil, which comprises: the three-phase separation assembly comprises a first-stage cyclone bin, an air hole partition plate and a cyclone guide vane, wherein a first-stage cyclone cavity with a hollow structure is formed inside the first-stage cyclone bin, the first-stage cyclone bin is provided with a plurality of inlets, exhaust pipes and discharge fixing pipes which are communicated with the first-stage cyclone cavity, the air hole partition plate and the cyclone guide vane are accommodated in the first-stage cyclone cavity, the air hole partition plate is arranged close to the exhaust pipes, and the cyclone guide vane is positioned below the inlets; the water ring generating assemblies are multiple and are connected with the inlets in a one-to-one correspondence manner; the oil-water separation component is positioned below the first-stage cyclone bin and is communicated with the first-stage cyclone cavity through a filtrate pipe, and the cyclone guide vane is arranged around the filtrate pipe.
According to one embodiment of the utility model, the water ring generation assembly comprises a water ring generator and a feed pipe, one end of the water ring generator is communicated with the inlet, the other end of the water ring generator is communicated with the water inlet, and the feed pipe is inserted into the water inlet and is communicated with the inlet.
According to one embodiment of the utility model, the oil-water separation assembly comprises a secondary cyclone bin and an overflow pipe, wherein the secondary cyclone bin is internally constructed into a secondary cyclone cavity with a hollow structure, the upper end of the secondary cyclone cavity is communicated with the filtrate pipe, the lower part of the secondary cyclone cavity is provided with a drain pipe, the overflow pipe is arranged on the side wall of the secondary cyclone bin, and the inlet end of the overflow pipe extends into the interior of the secondary cyclone cavity for a predetermined distance and is communicated with the secondary cyclone cavity.
According to one embodiment of the utility model, the air hole partition plate is provided with a plurality of air holes which are uniformly distributed.
According to one embodiment of the utility model, the filtrate pipe comprises a first conical section and a first straight section, and a plurality of filtrate holes are uniformly arranged on the first conical section and the first straight section.
According to one embodiment of the utility model, the first taper pipe section is of a tapered horn structure from bottom to top, and the top end of the first taper pipe section is communicated with the first straight pipe section.
According to one embodiment of the utility model, the secondary cyclone chamber comprises a second straight pipe section and a second conical pipe section, wherein the top end of the second straight pipe section is communicated with the lower end of the first conical pipe section, the top end of the second conical pipe section is communicated with the bottom end of the second straight pipe section, and the bottom end of the second conical pipe section is communicated with the water discharge pipe.
According to an embodiment of the utility model, the second cone section is of a divergent horn structure from bottom to top.
According to one embodiment of the utility model, the inlet end of the overflow pipe is in the form of an expanding pipe, and the periphery of the expanding pipe is provided with a cone.
According to one embodiment of the utility model, the number of the inlets is two, the inlets are communicated with the primary cyclone cavity in the tangential direction of the primary cyclone bin, and the flow directions of the two inlets are opposite.
The utility model relates to a device for oil-gas-water-solid multiphase separation of thickened oil, which comprises three parts of water ring generation, gas-liquid-solid three-phase separation and oil-water separation, wherein a water ring generator generates a stable water ring to wrap the outer layer of the thickened oil to form thickened oil-water annular flow, the flowing resistance of the thickened oil is reduced, the thickened oil flows into a primary vortex cavity at a high speed, then the thickened oil and water are uniformly mixed under the action of a vortex guide vane, the viscosity of the thickened oil is reduced, the gas-liquid-solid three-phase separation efficiency is improved, the thickened oil is enabled to form a vortex flow, gas is discharged from a top exhaust pipe under the action of centrifugal force, a sand phase moves downwards along the side wall of the primary vortex cavity and is discharged from a solid discharge pipe, oil and water are gathered at the center of the primary vortex cavity, the oil and water flow into a secondary vortex cavity through a filtrate hole on a filtrate pipe, the secondary vortex cavity is further separated, the oil and water are discharged upwards along an overflow pipe, and the water phase is discharged from a bottom drain pipe, therefore, the purpose of oil-water separation is achieved, thick oil is conveyed by a water ring, water is mixed for viscosity reduction, cyclone desanding, degassing and dehydration are integrated by using the structure, the defects of low treatment efficiency, large occupied space and the like of multi-phase separation equipment in the prior art are overcome, the whole device has no power element, energy is saved, consumption is reduced, and the effect of oil-gas-water-solid multi-phase high-efficiency separation is achieved.
Drawings
FIG. 1 is a schematic structural diagram of an apparatus for oil-gas-water-solid multiphase separation of thick oil according to the utility model.
Fig. 2 is a top view of an apparatus for oil-gas-water-solid multiphase separation of thick oil according to the present invention.
Fig. 3 is a partially enlarged schematic view of fig. 1.
Fig. 4 is a schematic structural diagram of a pore partition plate in the device for oil-gas-water-solid multiphase separation of thick oil according to the utility model.
Reference numerals: 1-a feed pipe; 2-a water inlet; 3-a water ring generator; 4-an exhaust pipe; 5-air hole partition board; 6-filtrate hole; 7-swirl guide vanes; 8-a filtrate pipe; 9-arranging solid pipes; 10-a secondary vortex chamber; 11-a cone; 12-a drain pipe; 13-a secondary cyclone bin; 14-an overflow pipe; 15-primary vortex chamber; 16-first-stage cyclone bin; 17-an inlet; 51-air holes.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.
As shown in fig. 1 to 4, an apparatus for oil-gas-water-solid multiphase separation of thick oil comprises: the three-phase separation assembly comprises a first-stage cyclone bin 16, an air hole partition plate 5 and cyclone guide vanes 7, wherein a first-stage cyclone cavity 15 with a hollow structure is formed inside the first-stage cyclone bin 16, a plurality of inlets 17, exhaust pipes 4 and fixed exhaust pipes 9 which are communicated with the first-stage cyclone cavity 15 are arranged on the first-stage cyclone bin 16, the air hole partition plate 5 and the cyclone guide vanes 7 are accommodated in the first-stage cyclone cavity 15, the air hole partition plate 5 is arranged close to the exhaust pipes 4, a plurality of uniformly distributed air holes 51 are formed in the air hole partition plate 5, gas is conveniently exhausted, and the cyclone guide vanes 7 are positioned below the inlets 17; the water ring generating assemblies are multiple and are connected with the inlets 17 in a one-to-one correspondence manner; the oil-water separation component is located below the first-stage cyclone bin 16 and is communicated with the first-stage cyclone cavity 15 through the filter liquid pipe 8, wherein the cyclone guide vane 7 is arranged around the filter liquid pipe 8, the rotating direction of the cyclone guide vane 7 is consistent with the cyclone direction of fluid formed in the first-stage cyclone cavity 15, and the oil-water separation component can guide flow and can also enable thick oil and water to be uniformly mixed, reduce the viscosity of the thick oil and increase the flowability, so that the separation efficiency is improved.
The utility model relates to a device for oil-gas-water-solid multiphase separation of thickened oil, which comprises three parts of water ring generation, gas-liquid-solid three-phase separation and oil-water separation, wherein a water ring generator 3 generates a stable water ring to wrap the outer layer of the thickened oil to form thickened oil-water annular flow, the flowing resistance of the thickened oil is reduced, the thickened oil flows into a primary vortex cavity 15 at a high speed, then the thickened oil and water are uniformly mixed under the action of a vortex guide vane 7, the viscosity of the thickened oil is reduced, the gas-liquid-solid three-phase separation efficiency is improved, the thickened oil and the water form a vortex flow, gas is discharged from a top exhaust pipe 4 under the action of centrifugal force, sand phase is transported downwards along the side wall of the primary vortex cavity 15 and discharged from a solid discharge pipe 9, oil and water are gathered at the center of the primary vortex cavity 15, the oil and the oil flow into a secondary vortex cavity 10 through a filtrate hole 6 on a filtrate pipe 8, the oil and water are further separated in the secondary vortex cavity 10, and the oil are discharged upwards along an overflow pipe 14, the water phase is discharged from the bottom drain pipe 12, so that the purpose of oil-water separation is achieved, the water ring is used for conveying thickened oil, watering and viscosity reduction, cyclone desanding, degassing and dewatering are integrated, the defects of low treatment efficiency, large occupied space and the like of multi-phase separation equipment in the prior art are overcome, the whole device has no power element, energy is saved, consumption is reduced, and the effect of oil-gas-water-solid multi-phase high-efficiency separation is achieved.
As shown in fig. 1 to 3, the water ring generation assembly includes a water ring generator 3 and a feed pipe 1, one end of the water ring generator 3 is communicated with an inlet 17, the other end of the water ring generator 3 is communicated with a water inlet 2, the feed pipe 1 is inserted into the water inlet 2 and is communicated with the inlet 17, that is, the water ring generation part is formed by the water ring generator 3, the water inlet 2 and the feed pipe 1 together to form a stable water ring and wrap thick oil, so as to reduce the transportation resistance of the thick oil, increase the flow rate of the thick oil-water ring and improve the separation efficiency, it is understood that the inlet side of the feed pipe 1 is of an inverted horn-shaped structure, which is beneficial to increase the inlet flow rate; the number of the inlets 17 is two, the inlets 17 are communicated with the primary cyclone cavity 15 in the tangential direction of the primary cyclone bin 16, the flow directions of the two inlets 17 are opposite, and the structural form of the double inlets 17 effectively ensures the stability of a flow field and improves the cyclone efficiency.
As shown in fig. 1, the oil-water separation assembly includes a secondary cyclone bin 13 and an overflow pipe 14, the secondary cyclone bin 13 is internally configured into a secondary cyclone chamber 10 with a hollow structure, the upper end of the secondary cyclone chamber 10 is communicated with the filtrate pipe 8, the lower part of the secondary cyclone chamber is provided with a drain pipe 12, the overflow pipe 14 is arranged on the side wall of the secondary cyclone bin 13, the inlet end of the overflow pipe 14 extends into the secondary cyclone chamber 10 for a predetermined distance and is communicated with the secondary cyclone chamber 10, wherein the inlet end of the overflow pipe 14 is in a divergent pipe form, and the periphery of the divergent pipe is provided with a conical body 11, so as to effectively reduce short-circuit flow.
As shown in fig. 1, the filtrate pipe 8 includes a first conical pipe section and a first straight pipe section, the first conical pipe section is of a tapered horn structure from bottom to top, the top end of the first conical pipe section is communicated with the first straight pipe section, and a plurality of filtrate holes 6 are uniformly arranged on the first conical pipe section and the first straight pipe section, so that fluid in the rotational flow process can conveniently enter the secondary rotational flow cavity 10.
As shown in fig. 1, the secondary vortex cavity 10 includes a second straight pipe section and a second cone section, the top end of the second straight pipe section is communicated with the lower end of the first cone section, the top end of the second cone section is communicated with the bottom end of the second straight pipe section, the bottom end of the second cone section is communicated with the drain pipe 12, and the second cone section is of a gradually expanding type horn structure from bottom to top, so that oil and water can be separated quickly and efficiently in the secondary vortex cavity 10.
As shown in fig. 1 to 4, the installation and use process of the device for oil-gas-water-solid multiphase separation of thick oil of the present invention is as follows:
1. the feeding pipe 1 is combined with the water ring generator 3, and the primary vortex cavity 15 is connected with the secondary vortex cavity 10 by using the filtrate pipe 8;
2. water enters from the water inlet 2, generates a stable water ring through the water ring generator 3, wraps the periphery of the thickened oil entering from the feeding pipe 1, forms a thickened oil-water ring shape and flows into the primary rotational flow cavity 15 together, and because the water is directly contacted with the pipe wall, the frictional resistance is greatly reduced, and the pressure drop of thickened oil conveying is reduced;
3. in the primary cyclone cavity 15, a water ring and thick oil are uniformly mixed under the action of the cyclone guide vanes 7 and form a cyclone shape, under the action of centrifugal force, a solid phase moves towards the side wall of the primary cyclone cavity 15 and is discharged through the solid discharge pipe 9, gas flows through the gas hole partition plate 5 at the top of the primary cyclone cavity 15 and is discharged through the gas discharge pipe 4, an oil-water mixture is converged at the axis of the primary cyclone cavity 15 and flows into the secondary cyclone cavity 10 through the filtrate hole 6 on the filtrate pipe 8;
4. the oil phase and the water phase are further separated in the secondary vortex cavity 10, under the action of centrifugal force, the oil phase is converged at the axis of the secondary vortex cavity 10 and is discharged upwards along the overflow pipe 14, and the water phase is transported along the side wall of the secondary vortex cavity 10 and is discharged from the lower side drain pipe 12, so that the purpose of oil-water separation is achieved.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A device for oil-gas-water-solid multiphase separation of thick oil is characterized by comprising: the three-phase separation assembly comprises a first-stage cyclone bin, an air hole partition plate and a cyclone guide vane, wherein a first-stage cyclone cavity with a hollow structure is formed inside the first-stage cyclone bin, the first-stage cyclone bin is provided with a plurality of inlets, exhaust pipes and discharge fixing pipes which are communicated with the first-stage cyclone cavity, the air hole partition plate and the cyclone guide vane are accommodated in the first-stage cyclone cavity, the air hole partition plate is arranged close to the exhaust pipes, and the cyclone guide vane is positioned below the inlets; the water ring generating assemblies are multiple and are connected with the inlets in a one-to-one correspondence manner; the oil-water separation component is positioned below the first-stage cyclone bin and is communicated with the first-stage cyclone cavity through a filtrate pipe, and the cyclone guide vane is arranged around the filtrate pipe.
2. The device for oil, gas, water and solid multiphase separation of thick oil according to claim 1, wherein the water ring generation assembly comprises a water ring generator and a feed pipe, one end of the water ring generator is communicated with the inlet, the other end of the water ring generator is communicated with the water inlet, and the feed pipe is inserted into the water inlet and is communicated with the inlet.
3. The device of claim 1, wherein the oil-water separation assembly comprises a second-stage cyclone chamber and an overflow pipe, the second-stage cyclone chamber is internally constructed into a second-stage cyclone chamber with a hollow structure, the upper end of the second-stage cyclone chamber is communicated with the filtrate pipe, the lower part of the second-stage cyclone chamber is provided with a drain pipe, the overflow pipe is arranged on the side wall of the second-stage cyclone chamber, and the inlet end of the overflow pipe extends into the inner part of the second-stage cyclone chamber for a predetermined distance and is communicated with the second-stage cyclone chamber.
4. The device for oil-gas-water-solid multiphase separation of thick oil according to claim 1, wherein the air hole partition plate is provided with a plurality of air holes which are uniformly distributed.
5. The device for oil-gas-water-solid multiphase separation of thick oil according to claim 3, wherein the filtrate pipe comprises a first conical pipe section and a first straight pipe section, and a plurality of filtrate holes are uniformly arranged on each of the first conical pipe section and the first straight pipe section.
6. The device for oil, gas, water and solid multiphase separation of thick oil according to claim 5, wherein the first conical pipe section is of a tapered horn structure from bottom to top, and the top end of the first conical pipe section is communicated with the first straight pipe section.
7. The device for oil-gas-water-solid multiphase separation of thick oil according to claim 6, wherein the secondary cyclone chamber comprises a second straight pipe section and a second conical pipe section, the top end of the second straight pipe section is communicated with the lower end of the first conical pipe section, the top end of the second conical pipe section is communicated with the bottom end of the second straight pipe section, and the bottom end of the second conical pipe section is communicated with the drain pipe.
8. The device for multiphase separation of oil, gas, water and solid of thick oil according to claim 7, wherein the second conical pipe section is of a gradually expanding type horn structure from bottom to top.
9. The device for the multiphase separation of oil, gas, water and solid of thick oil according to claim 3, wherein the inlet end of the overflow pipe is in the form of a divergent pipe, and the periphery of the divergent pipe is provided with a conical body.
10. The device for multiphase separation of oil, gas, water and solid of thick oil according to claim 1, wherein the number of the inlets is two, the inlets are communicated with the primary cyclone chamber in the tangential direction of the primary cyclone bin, and the flow directions of the two inlets are opposite.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023120239.2U CN215842026U (en) | 2020-12-22 | 2020-12-22 | Device for oil-gas-water-solid multiphase separation of thickened oil |
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| CN202023120239.2U CN215842026U (en) | 2020-12-22 | 2020-12-22 | Device for oil-gas-water-solid multiphase separation of thickened oil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114876453A (en) * | 2022-05-05 | 2022-08-09 | 西南石油大学 | Oil-gas-sand multiphase pump experiment system capable of automatically adjusting medium components and parameters |
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- 2020-12-22 CN CN202023120239.2U patent/CN215842026U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114876453A (en) * | 2022-05-05 | 2022-08-09 | 西南石油大学 | Oil-gas-sand multiphase pump experiment system capable of automatically adjusting medium components and parameters |
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