CN103785552A - Fence type oil-gas-water three-phase separation device - Google Patents
Fence type oil-gas-water three-phase separation device Download PDFInfo
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- CN103785552A CN103785552A CN201210435339.5A CN201210435339A CN103785552A CN 103785552 A CN103785552 A CN 103785552A CN 201210435339 A CN201210435339 A CN 201210435339A CN 103785552 A CN103785552 A CN 103785552A
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Abstract
The invention provides a fence type oil-gas-water three-phase separation device. The fence type oil-gas-water three-phase separation device comprises a gas-liquid separation hydrocyclone, an oil-water separation hydrocyclone and a trapezoid-shaped pipe air floating device which are connected in sequence, wherein a liquid inlet pipe is arranged at the front end of the gas-liquid separation hydrocyclone and a gas discharging pipeline is connected with the upper end of the gas-liquid separation hydrocyclone; the upper end of the oil-water separation hydrocyclone is connected with an oil discharging pipeline; the rear end of the trapezoid-shaped pipe air floating device is respectively connected with the oil discharging pipeline and a water discharging pipeline. The trapezoid-shaped pipe air floating device is composed of an upper horizontal pipe, a lower horizontal pipe and a vertical pipe which is vertically connected between the upper horizontal pipe and the lower horizontal pipe; the three pipes are communicated; the vertical pipe is connected to an air source. According to the fence type oil-gas-water three-phase separation device, a cyclone separation and air floating separation integration device is adopted and the oil-gas-water separation is realized in the crude oil flowing process; the occupied area is small and an installation manner is flexible; the fence type oil-gas-water three-phase separation device can used as a fence to be arrayed at the periphery of a well group platform; the defect that vertical and horizontal shell structures occupy a large area in the prior art is completely overcome.
Description
Technical field
The present invention relates to the device that oil gas water three phase mixture separates, specifically fence type oil-gas-water three-phase separation, is applicable to the Produced Liquid processing of offshore oilfield well group platform.
Background technology
Moisture continuous rising in offshore oil field development process, the increase of production fluid makes marine collection transmission pipe network, and overburden.At well group platform, Produced Liquid is separated on the spot, can effectively reduce collection transmission pipe network burden, meet the demand of the further extract exploitation of offshore oilfield.
For research and development compact conformation, three phases separator that treating capacity is large, researcher, in conjunction with principles such as gravity, eddy flow, air supportings, has developed multiple efficient oil-gas-water three-phase separation.As Chinese patent 200920270351.9, efficient small vertical oil-gas-water separator, open day is 2010-07-28, this device vertical structure floor space is little, internal structure advanced person, adopted gravitational settling dehydration, washed oil tech, added thermal Release Technology, air supporting dehydration technique etc., process liquid measure≤280 m
3/ d.Chinese patent 201020224668.1 for another example, a kind of moisture oil gas water three phase efficient cyclone of height that is applicable to, open day is 2011-01-05, this separator is horizontal separator, adopt gas-liquid cyclone separator to deviate from more than 98% gas, high water-content crude oil mixture after treatment, exports crude oil water containing≤3%, deviate from sewage with oil≤100ppm, liquid content≤0.01g/m in gas
3.
Above separator is in conjunction with multiple separation principle, and internal structure advanced person, separative efficiency are high, but do not break away from yet vertical, horizontal type shell structure, the defect that floor space is larger, and be not suitable for the offshore oilfield well group platform of narrow space.
In view of this,, for the problems referred to above, propose a kind of reasonable in design and effectively improve the fence type oil-gas-water three-phase separation of above-mentioned disappearance.
Summary of the invention
The object of this invention is to provide a kind of fence type oil-gas-water three-phase separation, adopt cyclonic separation to become method with air supporting disjoint set, in crude oil flow process, realize the separation of oil gas water, floor space is little, mounting means is flexible, can be used as fence and be arranged in well group platform surrounding, thoroughly solved vertical, horizontal type shell structure that prior art exists, the defect that floor space is larger.
Object of the present invention can be achieved by the following technical measures:
This fence type oil-gas-water three-phase separation comprises the gas-liquid separation rotational flow device, oil-water separation cyclone, the laddertron air-floating apparatus that connect successively; Described gas-liquid separation rotational flow device front end arranges feed tube, and upper end connects exhaust line; Described oil-water separation cyclone upper end connects delivery pipeline; Described laddertron air-floating apparatus rear end connects respectively delivery pipeline and flowing line.
Object of the present invention also can be achieved by the following technical measures:
Described laddertron air-floating apparatus is made up of upper horizontal tube and lower horizontal tube and the vertical tube that is vertically connected between upper and lower horizontal tube, and this three pipe is connected state, and described vertical tube is connected to source of the gas; Described upper horizontal tube is connected to the delivery pipeline of top, and lower horizontal tube front end is connected to oil-water separation cyclone, and rear end is connected to the flowing line at rear.
Described lower horizontal tube is provided with ball valve and flowmeter while being connected to flowing line, described lower horizontal pipeline is also provided with ball valve and flowmeter while being connected to oil-water separation cyclone; Described upper horizontal tube is provided with ball valve while being connected to delivery pipeline.
Described vertical tube magnitude setting is at least 5.
Between described gas-liquid separation rotational flow device and oil-water separation cyclone, in connecting pipe, be provided with ball valve and flowmeter.
Described gas-liquid separation rotational flow device is provided with air bleeding valve and gas flowmeter while being connected to exhaust line; Described oil-water separation cyclone is provided with ball valve while being connected to delivery pipeline.
The magnitude setting of described gas-liquid separation rotational flow device is at least 1, and oil-water separation cyclone magnitude setting is at least 2, and on pipeline, is provided with ball valve and flowmeter between multiple oil-water separation cyclone.
In use, the liquid that comes of well group platform enters three cyclones, separating natural gas, oil, water under the effect of gravity and centrifugal force successively in the present invention; Isolated water enters laddertron air-floating apparatus, and the effect float downward that in water, ganglion carries in Action of Gravity Field and air supporting enters horizontal tube; In the oil water mixture that needs to separate, oil content is no more than 20%, and point water yield accounts for the 60%-70% of profit total amount, and after processing, in water, oil-containing is no more than 30ppm.The present invention adopts cyclonic separation to become method with air supporting disjoint set, realizes the separation of oil gas water in crude oil flow process, and floor space is little, and mounting means is flexible, can be used as fence and is arranged in well group platform surrounding.
Accompanying drawing explanation:
Fig. 1 is the structural representation of the embodiment of the present invention.
In figure: 1-feed tube, 2-gas-liquid separation rotational flow device, 3-exhaust line, 4-one-level oil-water separation cyclone, 5-delivery pipeline, 6-secondary oil-water separation cyclone, 7-laddertron air-floating apparatus, 8-flowing line, 9-gas flowmeter, 10-flowmeter, 11-flowmeter, 12-flowmeter, 13-flowmeter, 14-air bleeding valve, 15-ball valve, 16-ball valve, 17-ball valve, 18-ball valve, 19-ball valve, 20-ball valve, 21-ball valve, horizontal tube under 22-, 23-vertical tube, the upper horizontal tube of 24-, 25-source of the gas.
The specific embodiment:
Relevant detailed description of the present invention and technology contents, coordinate accompanying drawing to be described as follows, but accompanying drawing only provides the use of reference with explanation, is not used for the present invention to be limited.
Shown in Fig. 1, fence type oil-gas-water three-phase separation, comprises the gas-liquid separation rotational flow device 2, oil-water separation cyclone, the laddertron air-floating apparatus 7 that connect successively; Described gas-liquid separation rotational flow device front end arranges feed tube 1, and upper end connects exhaust line 3; Described oil-water separation cyclone upper end connects delivery pipeline 5; Described laddertron air-floating apparatus rear end connects respectively delivery pipeline and flowing line 8.The magnitude setting of described gas-liquid separation rotational flow device is at least 1, and oil-water separation cyclone magnitude setting is at least 2, and as shown in the figure, the present embodiment adopts 2, is respectively one-level oil-water separation cyclone 4, secondary oil-water separation cyclone 6.Laddertron air-floating apparatus is made up of upper horizontal tube 24 and lower horizontal tube 22 and the vertical tube 23 that is vertically connected between upper and lower horizontal tube, and this three pipe is connected state, and described vertical tube is connected to source of the gas 25; Described upper horizontal tube is connected to the delivery pipeline 5 of top, and lower horizontal tube front end is connected to oil-water separation cyclone, and rear end is connected to the flowing line 8 at rear.Described vertical tube magnitude setting is at least 5.Described lower horizontal tube is provided with ball valve 21 and flowmeter 13 while being connected to flowing line, described lower horizontal pipeline is also provided with ball valve 19 and flowmeter 12 while being connected to oil-water separation cyclone; Described upper horizontal tube is provided with ball valve 20 while being connected to delivery pipeline.Between gas-liquid separation rotational flow device and oil-water separation cyclone, in connecting pipe, be provided with ball valve 15 and flowmeter 10.Described gas-liquid separation rotational flow device is provided with air bleeding valve 14 and gas flowmeter 9 while being connected to exhaust line; Described oil-water separation cyclone is provided with ball valve 16,18 while being connected to delivery pipeline.Between multiple oil-water separation cyclones, on pipeline, be provided with ball valve 17 and flowmeter 11.
Produced Liquid is after feed tube 1 enters 2 processing of gas-liquid separation rotational flow device, and gas enters exhaust line 3 by top air bleeding valve 14, and gas flowmeter 9 can record isolated tolerance.Liquid is after ball valve 15 and flowmeter 10 enter one-level oil-water separation cyclone 4 and separate, wet crude flows into delivery pipeline 5 by top overfall and ball valve 16, oil-polluted water enters secondary oil-water separation cyclone through underflow opening and ball valve 17, and flowmeter 11 can be surveyed oil-polluted water flow.Secondary oil-water separation cyclone 6, to oil-polluted water de-oiling again, is deviate from wet crude and is also imported delivery pipeline 5 by ball valve 18, and oil-polluted water enters laddertron air-floating apparatus 7 through ball valve 19 and flowmeter 12.After processing, oil-polluted water imports delivery pipeline 5 via ball valve 20, and now water meets injection water quality requirement, enters flowing line 8 through ball valve 21 and flowmeter 13, can be used as water filling water source reinjection into reservoir.Wherein, gas-liquid cyclone separator number is not limited to 1, and oil-water separation cyclone number is not limited to 2, and in laddertron air-floating apparatus 7, vertical tube number is not limited to 5, can be according to on-the-spot applicable cases adjustment.
Claims (7)
1. fence type oil-gas-water three-phase separation, is characterized in that, comprises the gas-liquid separation rotational flow device, oil-water separation cyclone, the laddertron air-floating apparatus that connect successively; Described gas-liquid separation rotational flow device front end arranges feed tube, and upper end connects exhaust line; Described oil-water separation cyclone upper end connects delivery pipeline; Described laddertron air-floating apparatus rear end connects respectively delivery pipeline and flowing line.
2. fence type oil-gas-water three-phase separation according to claim 1, it is characterized in that, described laddertron air-floating apparatus is made up of upper horizontal tube and lower horizontal tube and the vertical tube that is vertically connected between upper and lower horizontal tube, and this three pipe is connected state, and described vertical tube is connected to source of the gas; Described upper horizontal tube is connected to the delivery pipeline of top, and lower horizontal tube front end is connected to oil-water separation cyclone, and rear end is connected to the flowing line at rear.
3. fence type oil-gas-water three-phase separation according to claim 2, it is characterized in that, described lower horizontal tube is provided with ball valve and flowmeter while being connected to flowing line, described lower horizontal pipeline is also provided with ball valve and flowmeter while being connected to oil-water separation cyclone; Described upper horizontal tube is provided with ball valve while being connected to delivery pipeline.
4. fence type oil-gas-water three-phase separation according to claim 2, is characterized in that, described vertical tube magnitude setting is at least 5.
5. fence type oil-gas-water three-phase separation according to claim 1, is characterized in that, between described gas-liquid separation rotational flow device and oil-water separation cyclone, in connecting pipe, is provided with ball valve and flowmeter.
6. fence type oil-gas-water three-phase separation according to claim 1, is characterized in that, described gas-liquid separation rotational flow device is provided with air bleeding valve and gas flowmeter while being connected to exhaust line; Described oil-water separation cyclone is provided with ball valve while being connected to delivery pipeline.
7. fence type oil-gas-water three-phase separation according to claim 1, it is characterized in that, the magnitude setting of described gas-liquid separation rotational flow device is at least 1, and oil-water separation cyclone magnitude setting is at least 2, and on pipeline, is provided with ball valve and flowmeter between multiple oil-water separation cyclone.
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| CN201210435339.5A CN103785552B (en) | 2012-11-05 | 2012-11-05 | Fence type oil-gas-water three-phase separation device |
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| CN201210435339.5A CN103785552B (en) | 2012-11-05 | 2012-11-05 | Fence type oil-gas-water three-phase separation device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104707364A (en) * | 2015-03-16 | 2015-06-17 | 中国海洋石油总公司 | Oil-water separation device and oil-water separation method |
| CN104847329A (en) * | 2015-05-11 | 2015-08-19 | 中国海洋石油总公司 | Three-phase separation system |
| CN105623712A (en) * | 2016-03-24 | 2016-06-01 | 天津亿利科能源科技发展股份有限公司 | Multi-stage crude oil water diversion device |
| CN105903581A (en) * | 2016-05-31 | 2016-08-31 | 武汉工程大学 | Gas-liquid-solid three-phase cyclone separation testing system and method |
| CN106433764A (en) * | 2016-11-02 | 2017-02-22 | 中国石油化工股份有限公司 | Short-process water pre-separation apparatus for oilfield produced fluid |
| CN107050930A (en) * | 2017-04-19 | 2017-08-18 | 西安长庆油气建设实业有限责任公司 | The method that a kind of oil gas water solid four is separated |
| CN112780249A (en) * | 2020-12-18 | 2021-05-11 | 中国石油大学(华东) | Underwater three-phase multistage gravity type separation injection-production system |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104707364B (en) * | 2015-03-16 | 2017-01-04 | 中国海洋石油总公司 | Oil-water separation device and oil-water separation method |
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| CN105903581B (en) * | 2016-05-31 | 2018-05-01 | 武汉工程大学 | A kind of gas-liquid-solid three-phase cyclonic separation test system and test method |
| CN106433764B (en) * | 2016-11-02 | 2018-02-23 | 中国石油化工股份有限公司 | A kind of pre- turnout reason device of oil field mining liquid short route |
| CN106433764A (en) * | 2016-11-02 | 2017-02-22 | 中国石油化工股份有限公司 | Short-process water pre-separation apparatus for oilfield produced fluid |
| CN107050930A (en) * | 2017-04-19 | 2017-08-18 | 西安长庆油气建设实业有限责任公司 | The method that a kind of oil gas water solid four is separated |
| CN107050930B (en) * | 2017-04-19 | 2019-11-15 | 西安长庆油气建设实业有限责任公司 | A kind of method that oil gas water consolidates the separation of four phases |
| CN112780249A (en) * | 2020-12-18 | 2021-05-11 | 中国石油大学(华东) | Underwater three-phase multistage gravity type separation injection-production system |
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