CN215139418U - Oil-gas mixed transportation system - Google Patents
Oil-gas mixed transportation system Download PDFInfo
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- CN215139418U CN215139418U CN202121453520.XU CN202121453520U CN215139418U CN 215139418 U CN215139418 U CN 215139418U CN 202121453520 U CN202121453520 U CN 202121453520U CN 215139418 U CN215139418 U CN 215139418U
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Abstract
The utility model discloses an oil-gas mixed transportation system, which comprises an oil-gas separator, a static mixer and a mixed transportation pump, wherein the oil-gas separator is provided with an exhaust port, an oil-gas inlet and a liquid outlet, the gas-liquid mixer is provided with an outer cylinder body, a liquid-phase pipe cavity and a gas-phase pipe cavity, through holes are arranged in the liquid-phase pipe cavity and the gas-phase pipe cavity, and the liquid-phase pipe cavity and the gas-phase pipe cavity are arranged in the outer cylinder body; an exhaust port of the oil-gas separator is communicated with a gas phase pipe cavity in the gas-liquid mixer through a gas conveying pipeline, and a liquid outlet of the oil-gas separator is communicated with a liquid phase pipe cavity in the gas-liquid mixer through a liquid conveying pipeline; the gas-liquid mixing cavity of the gas-liquid mixer is sequentially connected with the static mixer and the mixing and conveying pump through a gas-liquid mixing pipeline. The oil-gas mixed transmission medium which is likely to generate slug flow phenomenon is fully mixed through an oil-gas separator, a gas-liquid mixer and a static mixer. The occurrence of slug flow phenomenon and adverse effect on the oil-gas mixed transportation process are reduced, and the damage of the mixed transportation pump can be effectively prevented.
Description
Technical Field
The utility model relates to a crude oil conveying equipment specifically is an oil gas mixed transportation system.
Background
At present, the phenomenon of gas-liquid mixed transportation of oilfield produced liquid in the gathering and transportation process is very common, and a mixed transportation pump is needed to be utilized for pressurization in the transportation process so as to carry out oil gas outward. However, in the process of gas-liquid mixed transportation of oil gas, slug flow is easy to occur, so that intermittent liquid slugs or gas slugs are caused, the conveying pressure and flow are changed greatly instantly, the slug flow working condition can cause great damage to the mixed transportation pump, and the problems of increased failure rate, poor operation efficiency and the like of the pump are caused.
In order to solve the above problems, the following related patent technologies have appeared:
chinese patent publication No. CN112302898A discloses a reciprocating oil-gas mixed transportation device, which comprises: a reciprocating pump; the buffer tank comprises a first inlet, a first outlet and a first gas-liquid mixing and conveying device, and the first gas-liquid mixing and conveying device comprises a first gas-liquid mixing and conveying pipe, a first gas pipe and a first liquid pipe; and the filtering device comprises a shell, a filter screen and a second gas-liquid mixed conveying device, wherein the second gas-liquid mixed conveying device comprises a second gas-liquid mixed conveying pipe, a second gas pipe and a second liquid pipe. When the mixed fluid of oil gas enters into the buffer tank, can adjust the rotation of the first gas-liquid mixed transportation pipe through first gas-liquid mixed transportation ware and set for the air admission, the delivery position of feed liquor pipeline, reach preliminary mixed transportation's purpose, then, when carrying out filterable through the filter equipment, the rotation that can again pass through the second gas-liquid mixed transportation pipe of second gas-liquid mixed transportation ware is adjusted and is set for into, the delivery position of feed liquor pipeline, reach the purpose of mixed transportation once more, make gas-liquid (oil gas) get into reciprocating type oil gas mixed transportation pump's suction chamber, reach the effect of oil gas mixed transportation, the oil well output has been improved.
However, since the device mixes gas and liquid in the tank body directly through the pipeline, the collision efficiency of two fluid molecules is not ideal, the mixing is not sufficient, and in addition, the device is complex and the manufacturing cost is high.
The utility model with the publication number of CN112113142A discloses an oil-gas mixed transportation system, which is provided with a mixed input pipe, the output end of the mixing input pipe is connected with the input end of a gas-liquid separator, the gas-liquid separator is respectively provided with a gas output port and a liquid output port, the gas output port is connected with one end of a gas pipe, the gas pipe is provided with a gas regulating valve, the other end of the gas pipe is connected with the gas inlet of the ejector, the liquid outlet is connected with one end of the transfusion pipe, a liquid delivery pump is arranged on the liquid delivery pipe, the other end of the liquid delivery pipe is connected with a liquid inlet of the ejector, the output end of the ejector is connected with the gas-liquid mixed delivery pump through the mixed output pipe, and the crude oil and the crude gas are subjected to liquid inlet separation, mixing, delivery, even heating and the like and integrated on one set of equipment, so that the functions are diversified and integrated, and the mixed delivery of the crude oil and the crude gas is realized.
However, the device still has the following defects: the device is characterized in that a section of L-shaped gas pipeline is additionally arranged in the liquid pipeline, and the gas pipeline is provided with the vent hole, so that gas can more easily enter liquid to be mixed, but the mixing area of the gas pipeline and the gas pipeline is limited, and the mixing efficiency is still not ideal.
Disclosure of Invention
An object of the utility model is to provide an oil gas defeated system that mixes makes the mixture of oil gas more abundant and even in transportation process, reduces the production of oil gas defeated in-process middle section plug flow, avoids the harm that the section plug flow phenomenon led to the fact conveying equipment, improves conveying efficiency, reduction in production cost.
In order to achieve the above object, the utility model provides a following technical scheme:
the oil-gas mixed transportation system comprises an oil-gas separator, a static mixer and a mixed transportation pump, wherein the oil-gas separator is provided with an exhaust port, an oil-gas inlet and a liquid outlet, and the oil-gas mixed transportation system is also provided with a gas-liquid mixer, wherein:
the gas-liquid mixer is provided with an outer cylinder, a liquid-phase pipe cavity and a gas-phase pipe cavity, through holes are formed in the liquid-phase pipe cavity and the gas-phase pipe cavity, and the liquid-phase pipe cavity and the gas-phase pipe cavity are arranged in the outer cylinder;
an exhaust port of the oil-gas separator is communicated with a gas phase pipe cavity in the gas-liquid mixer through a gas conveying pipeline, and a liquid outlet of the oil-gas separator is communicated with a liquid phase pipe cavity in the gas-liquid mixer through a liquid conveying pipeline;
the gas-liquid mixing cavity of the gas-liquid mixer is sequentially connected with the static mixer and the mixing and conveying pump through a gas-liquid mixing pipeline. Preferably, the aperture of the through hole is set between 5mm and 20 mm.
For optimization, the gas-phase tube cavity and the liquid-phase tube cavity are equal in length to the outer cylinder, and the length of the gas-liquid mixer is set to be 1-3 m.
As optimization, the inner diameter of the gas-liquid mixer is set between 0.5m and 2 m; the front end plate of outer barrel is equipped with liquid phase lumen interface and gaseous phase lumen interface respectively according to the position of liquid phase lumen and gaseous phase lumen, and the rear end plate central authorities of outer barrel are equipped with mixed liquid outlet and can be connected with gas-liquid mixture pipeline.
Preferably, the liquid phase tube cavity is arranged at the upper part of the inner cavity of the outer cylinder body, and the rear end tube body is sealed by the rear end plate of the outer cylinder body.
Preferably, the gas-phase tube cavity is arranged at the lower part of the inner cavity of the outer cylinder body, and the rear end tube body is sealed by the rear end plate of the outer cylinder body.
Preferably, the upper end pipe body of the liquid phase pipe cavity is welded with the upper wall of the inner cavity of the outer pipe body, and through holes are formed in the pipe wall of the liquid phase pipe cavity in the circumferential direction and the axial direction.
Preferably, the lower end pipe body of the gas-phase pipe cavity is welded with the lower wall of the inner cavity of the outer pipe body, and through holes are formed in the pipe wall of the gas-phase pipe cavity in the circumferential direction and the axial direction.
Preferably, through holes are formed in the circumferential direction and the axial direction of the lower pipe wall of the liquid phase pipe cavity close to the central line of the outer cylinder.
Preferably, through holes are formed in the circumferential direction and the axial direction of the upper pipe wall of the gas-phase pipe cavity close to the central line of the outer cylinder.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the utility model discloses connected the gas-liquid mixer between oil and gas separator and static mixer, let the oil gas that probably takes place slug flow phenomenon mix the defeated medium through the oil and gas separator preliminary separation after, enter the gas-liquid mixer secondary and evenly mix again, reentrant static mixer mixes. After the oil-gas mixed liquid is mixed for three times, the occurrence of slug flow phenomenon and the adverse effect on the oil-gas mixed transportation process are reduced, and the damage of the mixed transportation pump can be effectively prevented.
The gas-liquid mixer of the utility model is internally provided with a gas-phase tube cavity and a liquid-phase tube cavity, and the gas-phase tube cavity and the liquid-phase tube cavity are provided with a plurality of through holes; the gas-phase tube cavity is arranged at the bottom of the outer cylinder body, and the liquid-phase tube cavity is arranged at the upper part of the outer cylinder body. Under the action of conveying pressure, gas and liquid primarily separated by the oil-gas separator enter the gas-liquid mixer, and then respectively enter the gas-liquid mixing cavity by upward and downward rushing from the gas-phase tube cavity at the bottom and the liquid-phase tube cavity at the upper part, and gas-phase components and liquid-phase components separated by the oil-gas separator can be collided and mixed again by utilizing the difference of physical and chemical properties of the gas-liquid mixture, so that the oil-gas mixed liquid is more uniformly and fully mixed. The oil-gas mixed liquid after secondary mixing in the gas-liquid mixer is mixed in the static mixer and then conveyed by the mixing and conveying pump, so that the occurrence of slug flow phenomena and the adverse effect of the slug flow on the oil-gas mixing and conveying process are greatly reduced, and the mixing and conveying pump is effectively protected.
The utility model discloses an it is whole simple to constitute, but make full use of current conveying equipment. And the gas-liquid mixer in the utility model has the advantages of simple structure, low manufacturing cost, high gas-liquid mixing efficiency and obvious use effect.
The utility model has simple operation, convenient installation and low maintenance cost; the running targets of low investment, low running cost and high cost performance can be realized.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a cross-sectional view of one embodiment of the gas-liquid mixer of FIG. 1 taken along A-A;
FIG. 3 is a cross-sectional view of another embodiment of the gas-liquid mixer of FIG. 1 taken along A-A;
in the figure: 1. an oil-gas separator; 2. a gas-liquid mixer; 3. a static mixer; 4. a mixing and conveying pump; 101. an oil gas inlet; 102. a liquid discharge port; 103. an exhaust port; 201. an outer cylinder; 202. a liquid phase lumen; 203. a gas phase lumen; 204. a gas-liquid mixing chamber; 205. and a through hole.
Detailed Description
The drawings are for reference and illustration purposes only and are not intended to limit the scope of the present disclosure. The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 3, an oil-gas mixed transportation system comprises an oil-gas separator 1, a static mixer 3 and a mixed transportation pump 4, wherein the oil-gas separator 1 is provided with an exhaust port 103, an oil-gas inlet 101 and a liquid outlet 102, and the oil-gas mixed transportation system is further provided with a gas-liquid mixer 2, wherein:
the gas-liquid mixer 2 is provided with an outer cylinder 201, a liquid phase tube cavity 202 and a gas phase tube cavity 203, through holes 205 are arranged in the liquid phase tube cavity 202 and the gas phase tube cavity 203, and the liquid phase tube cavity 202 and the gas phase tube cavity 203 are arranged in the outer cylinder 201;
an exhaust port 103 of the oil-gas separator 1 is communicated with a gas phase pipe cavity 203 in the gas-liquid mixer 2 through a gas conveying pipeline, and a liquid outlet 102 of the oil-gas separator 1 is communicated with a liquid phase pipe cavity 202 in the gas-liquid mixer 2 through a liquid conveying pipeline;
the gas-liquid mixing chamber 204 of the gas-liquid mixer 2 is connected with the static mixer 3 and the mixing pump 4 in turn through a gas-liquid mixing pipeline.
When slug flow exists in oil gas mixed transportation, the components transported in the transportation pipeline move in the transportation pipeline in the form of liquid and gas, and the separation form is presented. In order to fully mix the gas and the liquid in the conveying pipeline, the segmented gas and liquid are firstly subjected to preliminary separation through the oil-gas separator 1, and then are subjected to collision and mixing through the gas-liquid mixer 2, so that the oil and the gas are mixed again. The gas-liquid mixer 2 is used to remix the gas-phase component and the liquid-phase component separated by the oil-gas separator 1. The utility model discloses an oil gas inlet 101 of oil and gas separator 1 and the exit linkage of defeated pump 4 of mixing are in the defeated flow of oil gas collection. The method comprises the following steps that (1) oil-gas mixed liquid containing gas and liquid enters from an oil-gas inlet 101 of an oil-gas separator 1, firstly, gas and liquid are preliminarily separated in the oil-gas separator 1, and the gas rises from an exhaust port 103 and enters a gas-phase tube cavity 203 in a gas-liquid mixer 2 through a gas conveying pipeline; the liquid in the gas-oil separator 1 sinks to the liquid discharge port 102 and enters the liquid phase pipe cavity 202 in the gas-liquid mixer 2 through the liquid delivery line. Because the liquid phase tube cavity 202 and the gas phase tube cavity 203 in the gas-liquid mixer 2 are both provided with the through holes 205, gas and liquid enter the gas-liquid mixing cavity 204 of the gas-liquid mixer 2 again to collide again and be uniformly mixed under the action of conveying pressure, enter the static mixer 3 through the gas-liquid mixing pipeline, and then are output by the mixing and conveying pump 4. The oil-gas mixture liquid is output by the mixed transportation pump 4 after being mixed secondarily and the static mixer 3, so that the adverse effect of slug flow phenomena on the oil-gas mixed transportation process can be effectively reduced, the damage of the mixed transportation pump is prevented, and the using effect is remarkable.
On the basis of the first embodiment, the utility model discloses still have following embodiment:
the aperture of the through hole 205 is set between 5mm and 20 mm.
The gas-phase tube cavity 203 and the liquid-phase tube cavity 202 are equal to the outer cylinder 201 in length, and the length of the gas-liquid mixer 2 is set to be between 1m and 3 m.
The inner diameter of the gas-liquid mixer 2 is set between 0.5m and 2 m; the front end plate of the outer cylinder 201 is respectively provided with a liquid phase pipe cavity interface and a gas phase pipe cavity interface according to the positions of the liquid phase pipe cavity 202 and the gas phase pipe cavity 203, and the center of the rear end plate of the outer cylinder 201 is provided with a mixed liquid outlet and can be connected with a gas-liquid mixed pipeline.
The liquid phase tube cavity 202 is arranged at the upper part of the inner cavity of the outer cylinder 201, and the rear end tube body is closed by the rear end plate of the outer cylinder 201.
The gas phase pipe cavity 203 is arranged at the lower part of the inner cavity of the outer cylinder 201, and the rear end pipe body is sealed by the rear end plate of the outer cylinder 201.
Referring to fig. 2, the upper end pipe body of the liquid phase pipe cavity 202 is welded with the upper wall of the inner cavity of the outer cylinder 201, and through holes 205 are arranged on the pipe wall of the liquid phase pipe cavity 202 in the circumferential direction and the axial direction.
Referring to fig. 2, a lower end pipe body of the gas phase pipe cavity 203 is welded with the lower wall of the inner cavity of the outer cylinder 201, and through holes 205 are arranged on the pipe wall of the gas phase pipe cavity 203 in the circumferential direction and the axial direction.
Referring to fig. 3, through holes 205 are provided in the lower tube wall of the liquid phase tube cavity 202 near the center line of the outer cylinder 201 in the circumferential direction and the axial direction.
Referring to fig. 3, through holes 205 are provided in the circumferential direction and the axial direction of the upper pipe wall of the gas phase pipe cavity 203 near the center line of the outer cylinder 201.
A gas-liquid mixing cavity 204 is arranged between the gas-phase tube cavity 203 and the liquid-phase tube cavity 202 of the gas-liquid mixer 2, a plurality of through holes 205 are respectively arranged on the gas-phase tube cavity 203 and the liquid-phase tube cavity 202, and the gas-phase tube cavity 203 and the liquid-phase tube cavity 202 are respectively communicated with the gas-liquid mixing cavity 204 through the through holes 205. Because the gas-phase tube cavity 203 and the liquid-phase tube cavity 202 are closed at the ends far away from the oil-gas separator 1, and because of the density characteristics of gas and liquid, gas-phase components can pass through the through hole 205 of the gas-phase tube cavity 203 to move upwards and enter the gas-liquid mixing cavity 204; meanwhile, due to the gravity characteristic of the liquid phase component, the liquid phase component in the liquid phase tube cavity 202 can pass through the through hole 205 to move downwards and enter the gas-liquid mixing cavity 204, and then the gas phase component and the liquid phase component can be continuously collided and mixed in the gas-liquid mixing cavity. Because the end of the gas-liquid mixing chamber 204 close to the static mixer 3 is provided with a mixed liquid outlet and is communicated with the static mixer 3 through a gas-liquid mixing pipeline, the mixed gas-liquid components can enter the static mixer 3 to be further fully mixed.
Under the effect of conveying pressure, gaseous and liquid by the preliminary separation of oil and gas separator 1 get into gas-liquid mixer 2 after, gaseous and the difference of the usable density characteristic of its self of liquid and physicochemical property, upwards respectively and downwards the spurt gets into gas-liquid mixing chamber 204 respectively from the gaseous phase lumen 203 of bottom and the liquid phase lumen 202 on upper portion again, with gaseous phase composition and the liquid phase composition after the oil and gas separator 1 separation collision again and mix, make more even and abundant that oil-gas mixture liquid mixes, the utility model discloses effectively solved the emergence of oil-gas mixture transportation process middle section plug flow.
The embodiments described above are merely exemplary embodiments, but the present invention is not limited to these embodiments, and those skilled in the art can make modifications without departing from the spirit and teaching of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and modifications can be made, and equivalents can be substituted for elements thereof. Any modification, equivalent replacement, improvement and the like made within the spirit and the concept of the present invention should be included in the protection scope of the present invention. The scope of protection is therefore not limited to the description above.
Claims (10)
1. The oil-gas mixed transportation system is characterized in that a gas-liquid mixer is further arranged in the oil-gas mixed transportation system, wherein: the gas-liquid mixer is provided with an outer cylinder, a liquid-phase pipe cavity and a gas-phase pipe cavity, through holes are formed in the liquid-phase pipe cavity and the gas-phase pipe cavity, and the liquid-phase pipe cavity and the gas-phase pipe cavity are arranged in the outer cylinder; an exhaust port of the oil-gas separator is communicated with a gas phase pipe cavity in the gas-liquid mixer through a gas conveying pipeline, and a liquid outlet of the oil-gas separator is communicated with a liquid phase pipe cavity in the gas-liquid mixer through a liquid conveying pipeline; the gas-liquid mixing cavity of the gas-liquid mixer is sequentially connected with the static mixer and the mixing and conveying pump through a gas-liquid mixing pipeline.
2. The oil-gas mixture transportation system according to claim 1, wherein the diameter of the through hole is set to be between 5mm and 20 mm.
3. The oil-gas mixture transportation system according to claim 2, wherein the gas-phase pipe cavity and the liquid-phase pipe cavity are equal in length to the outer cylinder, and the length of the gas-liquid mixer is set to be between 1m and 3 m.
4. The system for transporting a mixture of oil and gas as set forth in claim 3, wherein the inner diameter of said gas-liquid mixer is set to be between 0.5m and 2 m; the front end plate of outer barrel is equipped with liquid phase lumen interface and gaseous phase lumen interface respectively according to the position of liquid phase lumen and gaseous phase lumen, and the rear end plate central authorities of outer barrel are equipped with mixed liquid outlet and can be connected with gas-liquid mixture pipeline.
5. The oil-gas mixture transportation system according to claim 4, wherein the liquid phase pipe cavity is arranged at the upper part of the inner cavity of the outer cylinder body, and the rear end pipe body is sealed by the rear end plate of the outer cylinder body.
6. The oil-gas mixture transportation system according to claim 4, wherein the gas-phase pipe cavity is arranged at the lower part of the inner cavity of the outer cylinder body, and the rear end pipe body is closed by the rear end plate of the outer cylinder body.
7. The oil-gas mixture transportation system as claimed in claim 4 or 5, wherein the upper end pipe body of the liquid phase pipe cavity is welded with the upper wall of the inner cavity of the outer cylinder body, and through holes are formed in the pipe wall of the liquid phase pipe cavity in the circumferential direction and the axial direction.
8. The oil-gas mixture transportation system according to claim 4 or 6, wherein the lower end pipe body of the gas phase pipe cavity is welded with the lower wall of the inner cavity of the outer cylinder body, and through holes are formed in the pipe wall of the gas phase pipe cavity in the circumferential direction and the axial direction.
9. The oil-gas mixture transportation system as claimed in claim 4 or 5, wherein the liquid phase pipe cavity is provided with through holes in the circumferential direction and the axial direction of the lower pipe wall close to the center line of the outer cylinder body.
10. The oil-gas mixture transportation system as claimed in claim 4 or 6, wherein through holes are formed in the upper pipe wall of the gas-phase pipe cavity close to the center line of the outer cylinder body in the circumferential direction and the axial direction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121453520.XU CN215139418U (en) | 2021-06-29 | 2021-06-29 | Oil-gas mixed transportation system |
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| CN202121453520.XU CN215139418U (en) | 2021-06-29 | 2021-06-29 | Oil-gas mixed transportation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024098384A1 (en) * | 2022-11-11 | 2024-05-16 | Saudi Arabian Oil Company | Pressure boosting system for multi-phase crude oil |
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2021
- 2021-06-29 CN CN202121453520.XU patent/CN215139418U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024098384A1 (en) * | 2022-11-11 | 2024-05-16 | Saudi Arabian Oil Company | Pressure boosting system for multi-phase crude oil |
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