CN216711648U - External air floatation system for oilfield produced water - Google Patents

External air floatation system for oilfield produced water Download PDF

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Publication number
CN216711648U
CN216711648U CN202122818542.8U CN202122818542U CN216711648U CN 216711648 U CN216711648 U CN 216711648U CN 202122818542 U CN202122818542 U CN 202122818542U CN 216711648 U CN216711648 U CN 216711648U
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China
Prior art keywords
tank body
external air
water
produced water
air flotation
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CN202122818542.8U
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Chinese (zh)
Inventor
闫宏图
张喦
甘澍霖
徐鹏
张敏
徐广武
李世刚
李子旺
王胜
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CNOOC Energy Conservation and Environmental Protection Service Co Ltd
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CNOOC Energy Conservation and Environmental Protection Service Co Ltd
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Abstract

The utility model provides an external air floatation system for oilfield produced water, which comprises an air bubble generating device and an air floatation device, wherein the air bubble generating device is connected with the air floatation device; the bubble generating device comprises a tank body; the top of the tank body is provided with a water outlet which is connected with a water inlet of the air flotation device, and the bottom in the tank body is provided with a releasing mechanism for releasing gas in the oil field produced water; the water inlet of the releasing mechanism is arranged on the outer wall of the tank body. The external air floatation system for the oilfield produced water can effectively remove the associated natural gas in the oilfield produced water to form bubble water, and the bubble water enters the air floatation device to further remove oil and suspended matters in the produced water, so that the stable operation of the effluent quality and the subsequent treatment process is realized.

Description

External air floatation system for oilfield produced water
Technical Field
The utility model belongs to the field of oilfield produced water treatment, and particularly relates to an external air floatation system for oilfield produced water.
Background
A large amount of low-saturation dissolved natural gas exists in oil field produced water, dissolved gas in the oil field produced water needs to be quickly and fully released, effective oil-water separation in the later period is guaranteed, and meanwhile cavitation of a lift pump is also prevented. The existing air flotation device for the produced water in the oil field generally has the following problems of large energy consumption and high equipment investment cost; secondly, equipment is easy to block, so that the whole air floatation device is stopped to cause great production loss; thirdly, the equipment maintenance degree of difficulty is big, and the operating personnel of being not convenient for carries out quick maintenance, therefore urgently needed a can improve the novel air supporting device that is used for oil field produced water of above-mentioned problem in the market.
Disclosure of Invention
In view of the above, the present invention is directed to an external air flotation system for oilfield produced water, which can effectively remove associated natural gas in oilfield produced water to form bubble water, and the bubble water enters an air flotation device to further remove oil and suspended matters in the produced water, so as to realize stable operation of effluent quality and subsequent treatment processes.
In order to achieve the purpose, the technical scheme of the utility model is realized as follows:
an external air floatation system for oilfield produced water comprises an air bubble generating device and an air floatation device; the bubble generating device comprises a tank body; the top of the tank body is provided with a water outlet which is connected with a water inlet of the air flotation device, and the bottom in the tank body is provided with a releasing mechanism for releasing gas in the oil field produced water; the water inlet of the releasing mechanism is arranged on the outer wall of the tank body;
the release mechanism includes a plurality of releasers, and a plurality of releasers evenly set up on jar internal same horizontal plane, and the water inlet of all releasers all communicates with the water inlet.
Furthermore, six releasers are arranged; one releaser is arranged at the position of the circle center, and the other releasers are respectively arranged at the same distance with the position of the circle center.
Furthermore, the bottom of the tank body is provided with a back washing pipe orifice.
Further, the bottom of the tank body is provided with a sewage discharge pipe orifice.
Furthermore, a manhole is arranged on the side wall of the tank body.
Furthermore, the side wall of the tank body is provided with an observation port.
Compared with the prior art, the external air floatation system for the oilfield produced water has the following advantages:
the external air floatation system for the oilfield produced water, disclosed by the utility model, has the functions of degassing the produced water and forming bubble water, and can effectively reduce energy consumption by utilizing the water inlet pressure; the bubble generating device and the air floatation device are respectively and independently arranged, and when the releaser is blocked, the tank body is emptied, so that the maintenance is convenient. The bottom of the tank body is provided with a sewage discharge pipe opening, so that deposited sediments can be discharged conveniently and timely, and the sediment is prevented from submerging the releasing mechanism to influence the gas releasing effect. Be equipped with the manhole on the jar body lateral wall, be convenient for maintain or change releasing mechanism, ensure that equipment operation is stable.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model.
In the drawings:
FIG. 1 is a schematic structural diagram of an external air floatation system bubble generation device for oilfield produced water according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an external air flotation system assembly for oilfield produced water according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a release mechanism of an external air flotation system for oilfield produced water according to an embodiment of the present invention.
Description of reference numerals:
1-a bubble generating device; 2-a water inlet; 3-a release mechanism; 4-a sewage draining pipe orifice; 5-back flushing the pipe orifice; 6-releaser; 7-an excitation zone; 8-manhole; 9-a viewing port; 10-a generation zone; 11-a water outlet; 12-air floating device.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate a number of the indicated technical features. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1-3, an external air flotation system for oilfield produced water comprises an air bubble generating device 1 and an air flotation device 12; the bubble generating device 1 comprises a tank body; the top of the tank body is provided with a water outlet 11, the water outlet 11 is connected with a water inlet of an air floatation device 12, and the bottom in the tank body is provided with a releasing mechanism 3 for releasing gas in the water produced by the oil field; the water inlet 2 of the release mechanism 3 is arranged on the outer wall of the tank body;
release mechanism 3 includes a plurality of releasers 6, and a plurality of releasers 6 evenly set up on the same horizontal plane of jar internal, and the water inlet of all releasers 6 all communicates with water inlet 2.
As shown in fig. 1 to 3, the releaser 6 is provided with six; one releaser 6 is arranged at the position of the circle center, and the other releasers 6 are respectively arranged at the same distance with the position of the circle center.
In this embodiment, the releaser 6 is a dissolved gas releaser, and the dissolved gas releaser can separate out and release gas in the produced water in the oil field to form micro bubbles and then form bubble water with the produced water.
In this embodiment, the uniform arrangement of six releasers 6 can effectively improve the release of associated gas in the oilfield produced water, and the associated gas is discharged from the water outlet 11 at the top of the tank body after forming bubble water.
In another embodiment, the top of the tank body is provided with an exhaust valve.
As shown in fig. 1, in this embodiment, the oilfield produced water is injected into a releasing mechanism 3 through a water inlet 2, enters an excitation area 7 in the tank body, and a releaser 6 excites and releases gas in the oilfield produced water to form micro-bubbles, and then forms bubble water with the produced water, and the bubble water enters a generation area 10 in the tank body, and finally the bubble water is discharged from a water outlet 11 at the top of the tank body and enters a water inlet of an air flotation device 12, and the bubble water is subjected to air flotation treatment in the air flotation device 12, so as to realize solid-liquid separation and oil-water separation.
In the present embodiment, the air floating device 12 is a commercially available air floating processing device.
In this embodiment, the bubble water in the bubble generating device 1 is generated by the water pressure of the oilfield produced water, and is realized by the releaser 6, so that the energy consumption is effectively reduced.
As shown in fig. 1-3, the bottom of the tank body is provided with a back washing pipe orifice 5.
As shown in fig. 1-3, the bottom of the tank body is provided with a sewage pipe orifice 4.
The bottom of the tank body is provided with a sewage discharge pipe opening 4, so that deposited sediments can be discharged conveniently and timely, the sediment is prevented from submerging the releasing mechanism 3, and the generation effect of bubble water is influenced.
As shown in fig. 1-3, a manhole 8 is provided on the sidewall of the tank body.
The manhole 8 is provided to facilitate maintenance or replacement of the release mechanism 3.
As shown in figures 1-3, the side wall of the can body is provided with a viewing port 9.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. The utility model provides an external air supporting system for oil field produced water which characterized in that: comprises a bubble generating device (1) and an air floating device (12); the bubble generation device (1) comprises a tank body; a water outlet (11) is formed in the top of the tank body, the water outlet (11) is connected with a water inlet of the air floatation device (12), and a release mechanism (3) for releasing gas in water produced by an oil field is arranged at the bottom in the tank body; the water inlet (2) of the release mechanism (3) is arranged on the outer wall of the tank body;
the releasing mechanism (3) comprises a plurality of releasing devices (6), the releasing devices (6) are uniformly arranged on the same horizontal plane in the tank body, and water inlets of all the releasing devices (6) are communicated with the water inlet (2).
2. The external air flotation system for oilfield produced water according to claim 1, wherein the external air flotation system comprises: six releasers (6) are arranged; one releaser (6) is arranged at the position of the circle center, and the other releasers (6) are respectively arranged at the same distance from the position of the circle center.
3. The external air flotation system for oilfield produced water according to claim 1, wherein the external air flotation system comprises: the bottom of the tank body is provided with a back washing pipe orifice (5).
4. The external air flotation system for oilfield produced water according to claim 1, wherein the external air flotation system comprises: the bottom of the tank body is provided with a sewage discharge pipe orifice (4).
5. The external air flotation system for oilfield produced water according to claim 1, wherein the external air flotation system comprises: and a manhole (8) is arranged on the side wall of the tank body.
6. The external air flotation system for oilfield produced water according to claim 1, wherein the external air flotation system comprises: and the side wall of the tank body is provided with an observation port (9).
CN202122818542.8U 2021-11-17 2021-11-17 External air floatation system for oilfield produced water Active CN216711648U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202122818542.8U CN216711648U (en) 2021-11-17 2021-11-17 External air floatation system for oilfield produced water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122818542.8U CN216711648U (en) 2021-11-17 2021-11-17 External air floatation system for oilfield produced water

Publications (1)

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CN216711648U true CN216711648U (en) 2022-06-10

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CN202122818542.8U Active CN216711648U (en) 2021-11-17 2021-11-17 External air floatation system for oilfield produced water

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CN (1) CN216711648U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115583686A (en) * 2022-10-13 2023-01-10 新疆敦华绿碳技术股份有限公司 Produced water decarbonization treatment device and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115583686A (en) * 2022-10-13 2023-01-10 新疆敦华绿碳技术股份有限公司 Produced water decarbonization treatment device and method
CN115583686B (en) * 2022-10-13 2024-04-16 新疆敦华绿碳技术股份有限公司 Device and method for decarbonizing produced water

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