CN210481045U - Device for quick oxidation gel breaking and directional removal of harmful substances of flow-back liquid - Google Patents
Device for quick oxidation gel breaking and directional removal of harmful substances of flow-back liquid Download PDFInfo
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- CN210481045U CN210481045U CN201920768072.9U CN201920768072U CN210481045U CN 210481045 U CN210481045 U CN 210481045U CN 201920768072 U CN201920768072 U CN 201920768072U CN 210481045 U CN210481045 U CN 210481045U
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Abstract
The utility model provides a flow back quick oxidation broken glue of discharge liquid and directional remove device of harmful substance, include: the device comprises a gel breaking and destabilizing part, a micro-bubble deslagging part, a fine filtering part and a directional removing part which are arranged in sequence. The utility model discloses a flow back quick oxidation rubber breaking of flowing back and directional remove device of harmful substance mainly are applied to the well drilling waste liquid, the fracturing that produce in the unconventional gas development processes such as coal bed gas, dense gas, shale gas and flow back among the recycle of flowing back such as flowing back, produced water. The device integrates the functions of organic matter oxidation gel breaking, micro-nano air flotation deslagging, multi-stage filtration and directional removal of harmful substances. The device is suitable for treating various flowback fluids, and has the advantages of wide application range, high oxidation speed, high organic matter removal rate, high cyclic utilization rate, low operating cost and the like.
Description
Technical Field
The utility model relates to a flowing back processing field is returned to flowing back, extraction water etc. to fracturing in unconventional gas development, concretely relates to return quick oxidation broken glue of flowing back and directional remove device of harmful substance.
Background
Since the 21 st century, the world economy entered a new development cycle, and the demand for oil and gas resources in various countries has risen. In the face of huge energy demand, the world oil and gas production capacity is relatively insufficient, so people begin to pay more attention to unconventional oil and gas resources. When unconventional gas such as coal bed gas, dense gas, shale gas and the like is developed, a large amount of drilling waste liquid, fracturing flow-back fluid, produced water and other flow-back fluid can be generated, and the drilling waste liquid, the fracturing flow-back fluid, the produced water and other flow-back fluid can be generally recycled after being treated. But the problems of difficult organic matter oxidation gel breaking, long time consumption, low cyclic utilization rate and the like in the cyclic utilization of the flowback liquids such as drilling waste liquid, fracturing flowback liquid, produced water and the like generated in the development process of unconventional gas such as coal bed gas, dense gas, shale gas and the like are solved.
Therefore, research on innovation of reservoir transformation flowback fluid treatment technology and matching devices needs to be developed, and a novel device for quickly oxidizing, breaking gel and directionally removing harmful substances in flowback fluid is researched and developed.
SUMMERY OF THE UTILITY MODEL
In order to overcome the organic matter oxidation broken gum that returns flowing back cyclic utilization existence difficult, time consumption is long, cyclic utilization is low scheduling problem, the utility model provides a return flowing back quick oxidation broken gum and the directional remove device of harmful substance adopts technical means and complete sets such as organic matter oxidation broken gum, micro-nano-scale air supporting slagging-off, multistage filtration, the directional removal of harmful substance, overcomes above-mentioned problem, reaches the cyclic utilization or the discharge to reach standard purpose of returning flowing back.
In order to realize the above purpose, the utility model adopts the following technical scheme:
the utility model provides a flow back quick oxidation gel breaking and directional remove device of harmful substance of flowing back, includes: the device comprises a gel breaking and destabilizing part, a micro-bubble deslagging part, a fine filtering part and a directional removing part which are arranged in sequence;
the gel breaking and destabilizing part comprises a gel breaking coagulation tank, a stirrer and a first micro-bubble generator; the stirrer is positioned in the gel breaking coagulation tank, and the first microbubble generator is positioned at the bottom in the gel breaking coagulation tank;
the microbubble deslagging part comprises an inclined plate, a second microbubble generator and a slag scraper; after the gel-broken return liquid automatically flows into the inclined plate for sedimentation, the flocculate in the return liquid floats on the liquid surface by the second microbubble generator and is removed by the slag scraper;
the fine filtering part comprises a multi-stage filtering tank; the return liquid enters the multistage filtration from the microbubble deslagging part through self-flow to be filtered;
the directional removal part comprises a purified water outlet; the filtered flowback liquid enters the directional removal part to remove harmful substances, and finally is discharged out of the device from the purified water outlet.
Preferably, the directional removing part is a resin absorption column.
Preferably, the first microbubble generator and the second microbubble generator generate microbubbles simultaneously, and the suspended matter is better floated on the liquid surface. Gas generated by liquid backflow can be used for generating microbubbles by the aid of buffering effect of the dissolved gas tank and the first microbubble generator and the second microbubble generator.
Preferably, the residue scraper is located directly above the second microbubble generator.
Preferably, the device is of a skid-mounted construction.
Preferably, the gel breaking coagulation tank comprises a liquid inlet and an oil outlet, and the return liquid enters the gel breaking coagulation tank from the liquid inlet; and the suspended oil in the backflow liquid is recovered through the oil outlet.
Preferably, the bottom of each part of the device is provided with a sludge discharge pipeline, and the sludge discharge pipelines are combined and connected to a sludge discharge outlet.
Preferably, the gel breaking coagulation tank comprises a liquid level meter and an oil separation plate so as to control the separated oil-water interface.
Preferably, the inclined plate is replaced by a mesh plate type stepped grating.
Preferably, the microbubble deslagging portion is provided with a liquid level meter. The utility model discloses a flow back quick oxidation rubber breaking of flowing back and directional remove device of harmful substance mainly are applied to the well drilling waste liquid, the fracturing that produce in the unconventional gas development processes such as coal bed gas, dense gas, shale gas and flow back among the recycle of flowing back such as flowing back, produced water. The device integrates the functions of organic matter oxidation gel breaking, micro-nano air flotation deslagging, multi-stage filtration and directional removal of harmful substances. The device is suitable for treating various flowback fluids, and has the advantages of wide application range, high oxidation speed, high organic matter removal rate, high cyclic utilization rate, low operating cost and the like.
The device can reduce the organic matter oxidation time by more than 40%, the organic matter removal rate reaches more than 95%, the treated effluent recycling rate is improved to more than 90%, and the reservoir damage rate is less than 30%.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic view of a device for quick oxidation gel breaking and directional removal of harmful substances for flowback fluid in a preferred embodiment of the present invention.
Description of reference numerals:
1-gel breaking coagulation tank, 2-oil outlet, 3-liquid inlet, 4-aeration pipeline, 5-stirrer, 61-first micro-bubble generator, 62-second micro-bubble generator, 7-inclined plate, 8-liquid level meter, 9-slag scraper, 10-micro-bubble slag removal part, 11-multistage filter tank, 12-resin absorption column, 13-sludge discharge outlet, 14-purified water outlet and 15-oil separation plate.
Detailed Description
In order to explain the present invention more clearly, the present invention will be further described with reference to the preferred embodiments and the accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
As shown in fig. 1, the present invention provides a preferred embodiment, a device for quick oxidation gel breaking and directional removal of harmful substances in flowback liquid, comprising: the device comprises a gel breaking and destabilizing part, a micro-bubble deslagging part 10, a fine filtering part and a directional removing part which are arranged in sequence.
The gel breaking and destabilizing part comprises a gel breaking coagulation tank 1, a stirrer 5 and a first microbubble generator 61; the agitator 5 is located broken gel coagulating basin 1, first microbubble generator 61 is located broken gel coagulating basin bottom. The gel breaking coagulation tank 1 further comprises a liquid level meter (not shown in the figure) and an oil separation plate 15 to control the separated oil-water interface. Specifically, the oil separation plate 15 is a broken line structure in the figure, and when the liquid level exceeds the upper edge of the broken line, the floating oil floating on the liquid level enters the oil collecting area (in the broken line part) and flows into the oil collecting tank through the oil outlet 2. When the liquid level meter displays that the liquid level is higher than the upper edge of the broken line, the alarm prompts to collect oil. The backflow liquid achieves the effects of rapid gel breaking and oil removal at the gel breaking and stabilizing part. The microbubble deslagging part 10 comprises an inclined plate 7, a second microbubble generator 62 and a slag scraper 9. The residue scraper 9 is located directly above the second microbubble generator 32. After the returning liquid after gel breaking enters the inclined plate 7 for sedimentation by self-flowing, the flocculate in the returning liquid is floated on the liquid surface by the second microbubble generator 62 and is removed by the slag scraper 9. The first microbubble generator 61 and the second microbubble generator 62 are located on the same exposure line 4. The sloping plate 7 can be replaced by a mesh plate type step grid and is also effective. The micro-bubble deslagging part achieves the purpose of removing most suspended matters. In the preferred embodiment, the microbubble deslagging section 10 is also provided with a liquid level meter 8 to monitor liquid level changes.
The fine filtering section comprises a multistage filtering tank 11; the backflow liquid enters the multistage filtering tank 11 for filtering through gravity flow from the microbubble deslagging part 10, and the purpose of further removing oil and suspended matters is achieved. The multistage filter tank 11 in the preferred embodiment is a multistage sand filter.
The directional removing part is a resin absorption column 12 which comprises a purified water outlet 14; the filtered flowback liquid enters a resin absorption column 12 to remove harmful substances, and finally is discharged out of the device from the purified water outlet 14 for reinjection or liquid preparation.
The backflow liquid is lifted by the lifting pump and enters the gel breaking and mixing tank 1 through the liquid inlet 3, a gel breaker is added, the gel breaking oxidation is assisted by the stirrer 5 and the first micro-bubble generator 61, the gel breaking speed is accelerated, and the suspended oil enters the recovery oil tank from the oil outlet 2 through the oil separation plate. The flow-back liquid after gel breaking enters the sloping plate 7 by self-flowing for sedimentation, the liquid after sedimentation is acted by the second micro-bubble generator 6 to enable flocculates in the water to float on the liquid surface and to be removed by the slag scraper 9, then the liquid reaches the multistage filter 11 by self-flowing for secondary filtration, the oil is further removed, the suspended matters are removed, and after the directional impurity removal through the resin absorption column 12, the purified water is reinjected or mixed with the liquid from the purified water outlet 14. And solid-phase sludge of each part is discharged through a sludge discharge pipeline, is combined and connected to a sludge discharge outlet 13, and is subjected to decrement treatment through a solid-phase decrement device. The recycling rate of the flow-back liquid is improved from 70% to 90%, the damage rate of the reservoir is less than or equal to 30%, and the water content of the residue is reduced from 85% to below 70%.
In addition, the device adopts sled dress ization structure, the transportation of being convenient for.
Obviously, the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it is obvious for those skilled in the art to make other variations or changes based on the above descriptions, and all the embodiments cannot be exhausted here, and all the obvious variations or changes that belong to the technical solutions of the present invention are still in the protection scope of the present invention.
Claims (10)
1. The utility model provides a flow back quick oxidation gel breaking of discharge liquid and directional remove device of harmful substance which characterized in that includes: the device comprises a gel breaking and destabilizing part, a micro-bubble deslagging part, a fine filtering part and a directional removing part which are arranged in sequence;
the gel breaking and destabilizing part comprises a gel breaking coagulation tank, a stirrer and a first micro-bubble generator; the stirrer is positioned in the gel breaking coagulation tank, and the first microbubble generator is positioned at the bottom in the gel breaking coagulation tank;
the microbubble deslagging part comprises an inclined plate, a second microbubble generator and a slag scraper; after the gel-broken return liquid automatically flows into the inclined plate for sedimentation, the flocculate in the return liquid floats on the liquid surface by the second microbubble generator and is removed by the slag scraper;
the fine filtering part comprises a multi-stage filtering tank; the return liquid enters the multistage filtration from the microbubble deslagging part through self-flow to be filtered;
the directional removal part comprises a purified water outlet; the filtered flowback liquid enters the directional removal part to remove harmful substances, and finally is discharged out of the device from the purified water outlet.
2. The device for rapid oxidative gel breaking and directional removal of harmful substances in flowback fluid according to claim 1, wherein the directional removal part is a resin absorption column.
3. The apparatus according to claim 1, wherein the first and second microbubble generators generate microbubbles simultaneously.
4. The device for rapid oxidative gel breaking and directional harmful substance removal of returned liquid according to claim 1, wherein the slag scraper is located right above the second microbubble generator.
5. The device for rapid oxidative gel breaking and directional removal of harmful substances of flowback fluid according to claim 1, wherein the device adopts a skid-mounted structure.
6. The device for rapid oxidative gel breaking and directional removal of harmful substances of the flowback liquid as claimed in claim 1, wherein the gel breaking coagulation tank comprises a liquid inlet and an oil outlet, and the flowback liquid enters the gel breaking coagulation tank from the liquid inlet; and the suspended oil in the backflow liquid is recovered through the oil outlet.
7. The device for rapid oxidative gel breaking and directional removal of harmful substances of returned fluids according to claim 1, wherein the bottom of each part of the device is provided with a sludge discharge pipeline, and the sludge discharge pipeline is combined and connected to a sludge discharge outlet.
8. The device for rapidly oxidizing and breaking gel and directionally removing harmful substances in flowback fluid according to claim 1, wherein the gel breaking coagulation tank comprises a liquid level meter and an oil separation plate so as to control a separated oil-water interface.
9. The device for rapid oxidative gel breaking and directional removal of harmful substances in returned liquid according to claim 1, wherein the inclined plate is replaced by a mesh plate type stepped grating.
10. The device for rapid oxidative gel breaking and directional harmful substance removal of returned liquid according to claim 1, wherein the microbubble deslagging portion is provided with a liquid level meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920768072.9U CN210481045U (en) | 2019-05-27 | 2019-05-27 | Device for quick oxidation gel breaking and directional removal of harmful substances of flow-back liquid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920768072.9U CN210481045U (en) | 2019-05-27 | 2019-05-27 | Device for quick oxidation gel breaking and directional removal of harmful substances of flow-back liquid |
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| Publication Number | Publication Date |
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| CN210481045U true CN210481045U (en) | 2020-05-08 |
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| CN201920768072.9U Active CN210481045U (en) | 2019-05-27 | 2019-05-27 | Device for quick oxidation gel breaking and directional removal of harmful substances of flow-back liquid |
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