CN105000704A - Pipeline type oil, gas and water separating device and method - Google Patents
Pipeline type oil, gas and water separating device and method Download PDFInfo
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- CN105000704A CN105000704A CN201510474087.0A CN201510474087A CN105000704A CN 105000704 A CN105000704 A CN 105000704A CN 201510474087 A CN201510474087 A CN 201510474087A CN 105000704 A CN105000704 A CN 105000704A
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Abstract
The invention discloses a pipeline type oil, gas and water separating device. The pipeline type oil, gas and water separating device comprises a liquid inlet pipe, a right branch pipe and a left branch pipe which are parallel to one another. The liquid inlet pipe is arranged on the upper sides of the left branch pipe and the right branch pipe. The distance between the liquid inlet pipe and the left branch pipe is equal to the distance between the liquid inlet pipe and the right branch pipe. The liquid inlet pipe is connected with the left branch pipe and the right branch pipe through inclined vertical pipes. The invention further discloses a method for conducting pipeline type oil, gas and water separating on oil, gas and water mixed liquid through the pipeline type oil, gas and water separating device. The three-time separation effect can be achieved; after pre-dewatering is conducted through the device, the water content in the liquid oil is greatly decreased, more than half of water in the mixed liquid can be removed, and the oil content, impurity accumulation and other indexes of sewage meet the entrance requirements of subsequence treatment processes. Thus, after the mixed liquid is separated, the loads of a crude oil treatment system are reduced, the scale of subsequent devices is reduced, treatment efficiency is improved, and running cost is reduced.
Description
Technical field
The present invention relates to technical field of petroleum extraction, comprise the treatment unit to the mixed solution of oil field output and treatment process, specifically, is pipe type oil air water separator and separation method.
Background technology
In oil extraction process, the general method at present for the process of High water cut production fluid is settling process.Detailed process is: the wet oil deviate from and sewage first through a thermo-chemical setting dihydration link, and then are made further advanced treatment by mixed solution.
But because a large amount of water and oil enter heat chemistry settling system simultaneously, cause precipitation apparatus in large scale, dosing cost of heating is very high.
Given this, those skilled in the art explore the energy-saving and cost-reducing new way of many kinds.
One, slurry tank is utilized to carry out the technique of oil gas water pre-separation, can reduce and heat or chemical feeding quantity, adopt similar method, application number be 201520022609.9 Chinese patent disclose a kind of metal wire-drawing waste liquid oil-water separation purification device, namely the method for slurry tank is adopted to dispose waste liquid, but the method must use bulky slurry tank, thus can take very large area, and operating pressure is lower;
Two, for reducing the floor space of slurry tank, someone uses triphase separator pre-dehydration device, application number be 03242236.9 Chinese patent disclose a kind of oil-water preseparator for extracted liquid, although aforesaid device can reduce floor space, but its construction costs is very high, treatment capacity is lower, and pressure rating is also low;
Three, for reducing construction costs, cost-saving, someone brings into use the hypergravity pre-dehydration devices such as swirler, but, to oil gas water mixed liquid and the viscous crude of different ratios, these devices can only be applicable to the oil gas water mixed liquid of some specified proportion and more low viscous viscous crude, for most oil gas water mixed liquid and the higher viscous crude of viscosity, its dehydration is second-rate.And this technique needs higher pressure, often needs supplementing energy in production reality, increase power and meet its requirement.Meanwhile, this technique robot control system(RCS) is more complicated, controls difficulty larger.
Therefore, obtain a kind of simple, efficient, low cost, the easy-operating oil and gas and water of safety from equipment or method become the emphasis that those skilled in the art study all the time.
Summary of the invention
The technological deficiencies such as existing oil and gas and water separating process technical equipment floor space is large in order to solve, volume large, it is high to invest, running cost is high, security risk is high, inferior separating effect, the invention provides pipe type oil air water separator, achieve that occupation area of equipment is little, volume is little, it is low to invest, do not need to increase that power, security risk are little, oil and gas and water is from the technical purpose such as effective.
For achieving the above object, the invention discloses pipe type oil air water separator, comprise liquid-inlet pipe arranged in parallel, right arm and left arm, liquid-inlet pipe is located at the upside of left and right arm, is connected between liquid-inlet pipe with left and right arm by slope tube; Liquid-inlet pipe, left arm, right arm are positioned at leg-of-mutton three summits, and liquid-inlet pipe two ends are respectively fluid inlet and oil outlet; Left and right arm one end has water outlet.
Present invention employs and substitute slurry tank with pipeline, scheme that three separators, swirler hypergravity are separated, solve some problems that traditional method exists.By the difference of oil gas water-mass density, after separation, most oil can flow out from the oil outlet of upside, and most water then can flow out from the water outlet of downside.In addition, slope tube inwall also has the effect that the little oil droplet of gathering becomes larger oil droplet, raising larger oil droplet ascent rate.
Further, left and right arm is in same level, and the distance between left arm and liquid-inlet pipe equals the distance between right arm and liquid-inlet pipe; Connect left and right arm all vertical with liquid-inlet pipe with every root slope tube of liquid-inlet pipe.
Said structure illustrates that liquid-inlet pipe, right arm and a left end surfaces circle centre position are on leg-of-mutton three end points, and three level pipes are the pipe frame structure of triangular form, and device decentralization is not easily toppled over, and are convenient to transport and install.This
inventionthe potential difference between upper and lower level pipe can be kept, improve the dehydrating effect of slope tube, play between three level pipes simultaneously and connect and the effect supported.
Further, be provided with tube bank in slope tube, tube bank comprises the pipe of more than two, and the pipe in tube bank is tubule.
Tubule bundle is installed in many slope tubes, improve the contact probability of drop and tube wall, after small droplets is gathered into large drop on tube wall, ascent rate is accelerated, the water of external phase is to dirty, play the effect of profit space metathesis, the dispersed oil droplets in solution down-flow water is because the little ascent rate of diameter is slow, have little time the problem floating to top.
Further, direction, place is restrained parallel with direction, slope tube place.
Further, be provided with swash plate in left and/or right arm, swash plate extends along left/right arm direction.
Further, comprise the swash plate of more than two pieces, between swash plate, between swash plate and left/right arm, form the space that mixed solution flows.
In two left/right arms, each design of installing multilayer incline-plate, can increase the horizontally-projected area of runner, is formed " shallow pond effect ", the fluid Reynolds number through swash plate region is reduced.Multilayer incline-plate solves the problem causing settling time deficiency because device volume is little preferably, improves effect and the efficiency of gravity settling.
Further, liquid-inlet pipe inner chamber portion on the upper side is provided with oil header, and compartment of terrain, oil header bottom has water outlet; Left and/or right is propped up tube cavity portion on the lower side and is provided with header, and compartment of terrain, header top has oil slick mouth.
The object that arranges of oil header and header is also in order to separating oil and water, mixed solution flows into from one end of oil header and header, water in oil header oil can sink to flowing out along water outlet, oil in header water can float along oil slick mouth and flow out, and the oil of outflow and water continue to carry out floating or sinking to exchanging in water trap standpipe.
Further, the liquid-inlet pipe that the low wet oil in oil header, the low oil-containing water in header are each passed through blind end flows out from oil header end with through the header end of the left/right arm of blind end.Oil header opening end is connected with oil outlet, and header opening end is connected with water outlet.
Further, liquid-inlet pipe upper end is provided with effuser, effuser and liquid-inlet pipe not parallel, be connected by some not contour standpipes between liquid-inlet pipe with effuser.
By arranging effuser, preliminary filtration can be carried out to the gas in mixed solution, improve the use range of this device.
Another goal of the invention of the present invention is to provide and utilizes above-mentioned pipe type oil air water separator to the separation method of oil gas water.Comprise the steps,
S1: oil gas water mixed liquid is fed through pipe type oil air water separator by the fluid inlet of liquid-inlet pipe, the gas in oil gas water mixed liquid can enter effuser along standpipe and flow out to feed channel, and crude oil flows out along liquid-inlet pipe to oil outlet, realizes the initial gross separation of oil gas water;
S2: the free-water after flash liberation, by the dispersed oil droplets in the tube bank wall coalescence free-water in slope tube and slope tube, the oil droplet after coalescence is along slope tube or restrain to floating, realizes the secondary separation of oil gas water;
S3: after the mixed solution after secondary separation enters left/right arm, if be provided with swash plate in left/right arm, then oil droplet can carry out coalescence floating under the effect of swash plate wall, enters liquid-inlet pipe again after the oil droplet after coalescence floats upwards enters slope tube; By S3 step, water flows out along the water outlet of left and right arm, is separated for three times that realize oil gas water.
Beneficial effect of the present invention is: the present invention can realize three effects be separated, after equipment predrainage of the present invention process, significantly reduce and carry out liquid Water in oil rate, water extraction more than half in mixed solution can be gone out, make sewage with oil rate and the index such as long-pending assorted meet the entrance requirement of subsequent treatment process, therefore, after predrainage, alleviate the load of crude Treatment system, reduce follow-up equipment scale, improve processing efficiency, reduce running cost.
In addition, separator volume of the present invention is little, have simple to operate, operate steadily, the advantage such as efficiency is high, safe and reliable, construction costs is low.
Accompanying drawing explanation
fig. 1for the structural representation of the pipe type oil air water separator of embodiment one
figure;
fig. 2for
fig. 1the cross section signal in middle A-A direction
figure;
fig. 3for the structural representation of the pipe type oil air water separator of embodiment two and three
figure;
fig. 4for the structural representation of the pipe type oil air water separator of embodiment four
figure;
fig. 5for the structural representation of the pipe type oil air water separator of embodiment five
figure.
in figure,
1, liquid-inlet pipe; 10, fluid inlet; 11, oil outlet; 2, slope tube; 3, right arm; 30, close mouth; 31, water outlet; 4, left arm; 5, restrain; 6, swash plate; 7, oil header; 8, header; 9, effuser.
Embodiment
Below in conjunction with
accompanying drawingto the structure of pipe type oil air water separator of the present invention and use this structure carry out oil and gas and water from method be explained in detail explanation.
Specific embodiment is as follows:
Embodiment one
as Fig. 1,2shown pipe type oil air water separator,
fig. 2the direction of middle arrow is the direction of liquid in pipe flowing, pipe type oil air water separator comprises the liquid-inlet pipe 1 of upper end and the left arm 4 of lower end, right arm 3, left arm 4, right arm 3 structure is identical, liquid-inlet pipe 1, left arm 4, right arm 3 be arranged in parallel, left arm 4, right arm 3 is horizontally disposed with and is in equal height, distance between liquid-inlet pipe 1 and left arm 4 can equal the distance between liquid-inlet pipe 1 and right arm 3, therefore, liquid-inlet pipe 1, left arm 4, the end face of right arm 3 drops on three end points of isosceles triangle, liquid-inlet pipe 1 and left arm 4, right arm 3 is connected by many slope tubes 2, every root slope tube 2 is all vertical with liquid-inlet pipe 1, in other words, liquid-inlet pipe 1 is perpendicular to each slope tube 2 place plane, liquid-inlet pipe 1 one end has fluid inlet 2, the other end has oil outlet 11, left arm 4, right arm 3 one end are closed, or left arm 4, right arm 3 one end are close mouth 30, and the other end has water outlet 31.
For the set-up mode between liquid-inlet pipe 1, the right arm 3 of left arm 4/, the present embodiment just have chosen one preferably setting means.Core of the present invention is the oil gas waterpipe type separator of isosceles triangle shape, in other words,
as Fig. 2set-up mode between shown liquid-inlet pipe 1 and right arm 3, this kind of mode be the present invention basic, be also the inventive point of core.
Embodiment two
as Fig. 1-3shown in, on the basis of embodiment one, embodiment two has set up tube bank 5 in slope tube 2.Be provided with tube bank 5 in slope tube 2, tube bank 5 comprises the tubule of more than two.The effect of tube bank 5 is the area increasing tube wall, to improve the congregational rate of the small droplets flowed in slope tube 2.In the present embodiment, it is parallel with direction, slope tube 2 place to restrain 5 directions, place.Comprise the tubule of how many in concrete tube bank, the density of restraining in other words, those skilled in the art as required can reasonable set.
Embodiment three
as Fig. 3shown in, on the basis of embodiment one or embodiment two, embodiment three is provided with swash plate 6 in left and/or right arm 3, and swash plate 6 extends along left arm 4, right arm 3 direction.In the present embodiment, comprise the swash plate 6 of more than two pieces, the effect of swash plate 6 acts on similar with tube bank 5, is also to increase contact area, to improve the congregational rate of small droplets.Similarly, the number of swash plate, those skilled in the art carry out rationally and advisably selecting as required.
Embodiment four
as Fig. 4shown in, on the basis of embodiment one or embodiment two, embodiment four have employed a kind of scheme arranged side by side with embodiment three.Certainly, in the conceived case, embodiment four also may be implemented with embodiment San Tong method.
Liquid-inlet pipe 1 exit end is closed, and liquid-inlet pipe 1 inner chamber portion on the upper side is provided with oil header 7.Oil header 7 extends along the direction of liquid-inlet pipe 1, and compartment of terrain, oil header 7 bottom has water outlet, and for flowing out the water in oil header 7, the oil header the other end passes closed liquid-inlet pipe as oil outlet.Most of crude oil in liquid-inlet pipe, under the effect of density difference, enters in oil header, in flow process, water in oil can automatically through the water outlet that oil header bottom is arranged, and sinks to entering left and right arm by liquid-inlet pipe, standpipe, and lower moisture crude oil flows out along oil header outlet; Left arm 4 and/or right arm 3 both ends open are closed, its inner chamber portion on the lower side is provided with header 8, header 8 extends along left arm 4, right arm 3 direction, compartment of terrain, header 8 top has oil slick mouth, for flowing out the oil in header 8, the header the other end passes closed left/right arm as water outlet.The oily(waste)water that liquid-inlet pipe, oil header sink through standpipe enters header, in flow process, due to the effect of density difference, the oil outlet that oil in water can be arranged through header top, enter liquid-inlet pipe, oil header through standpipe, the sewage of remaining lower oil-containing, flow out along header outlet.In the present embodiment, one end of oil header 7, header 8 flows into mixed solution, and the other end of header 8 is connected with water outlet 31, and the other end of oil header 7 is connected to oil outlet 11.
Utilize profit density different, realize the object that oil in liquid-inlet pipe 1 collected by oil header 7, header 8 collects the water in left arm 4 and right arm 3.
Embodiment five
as Fig. 5shown in, on the basis of embodiment one to four, the present embodiment is provided with effuser 9 in liquid-inlet pipe 1 upper end, and in the present embodiment, effuser 9 is not parallel with liquid-inlet pipe 1, is connected between liquid-inlet pipe 1 with effuser 9 by some not contour standpipes.The set-up mode of standpipe is similar to slope tube 2, and many standpipes are evenly distributed between liquid-inlet pipe 1 and effuser 9, enter in effuser 9 for the gas in mixed solution.
Utilize the air water separator of pipe type oil described in embodiment one to five carry out oil and gas and water from method, specifically comprise the steps:
S1: oil gas water mixed liquid is fed through pipe type oil air water separator by the fluid inlet of liquid-inlet pipe, the gas in oil gas water mixed liquid can enter effuser along standpipe and flow out to feed channel, and crude oil flows out along liquid-inlet pipe to oil outlet, realizes the initial gross separation of oil gas water;
S2: the free-water after flash liberation, by the dispersed oil droplets in the tube bank wall coalescence free-water in slope tube and slope tube, the oil droplet after coalescence is along slope tube or restrain to floating, realizes the secondary separation of oil gas water;
S3: after the mixed solution after secondary separation enters left/right arm, if be provided with swash plate in left/right arm, then oil droplet can carry out coalescence floating under the effect of swash plate wall, enters liquid-inlet pipe again after the oil droplet after coalescence floats upwards enters slope tube; By S3 step, water flows out along the water outlet of left and right arm, is separated for three times that realize oil gas water.
If liquid-inlet pipe 1 inner chamber portion on the upper side bias is provided with oil header 7, then compartment of terrain, oil header 7 bottom has the water outlet for flowing out water; Left arm 4 and/or the inclined lower eccentric of right arm 3 inner chamber are provided with header 8, and header top has the oil slick mouth for effluent oil.Through oil header, the header of eccentric setting, form crescent at the inwall place of eccentric pipe outer wall and liquid-inlet pipe inwall, left/right arm, fluid Reynolds number herein changes and reduces gradually, and the difficulty that crude oil enters header will increase.
The initial gross separation of oil gas water can be realized by step S1, S2, S3.The higher oil of concentration can be collected at oil outlet 11, comparatively pure water can be collected at water outlet 31.
Principle of work of the present invention is as follows: liquid-inlet pipe 1 front end is oilfield water mixed liquid entrance, liquid-inlet pipe 1 rear end is oil outlet 11, flow process can realize once settlement separate in liquid-inlet pipe 1 of oil, water, the external phase crude oil gravity flow oil feeding system separated, the free-water leaked down enters in many slope tubes 2, owing to establishing tubule bundle 5 in every root slope tube 2, dispersed oil in free-water pastes tubule top to floating to liquid-inlet pipe 1, to downstream to left arm 4, right arm 3 at the bottom of water subsides tubule, realize further oil removing object; Owing to having installed multilayer incline-plate 6 in left arm 4, right arm 3, fluid is through swash plate 6 region, advance edge, little oil droplet limit swash plate 6 lower wall in water is assembled, the larger oil droplet formed above swash plate 6 floats, again float up to liquid-inlet pipe 1 through slope tube 2, below swash plate 6, be easy to collect comparatively pure water.
In the specific implementation, can according to treatment capacity, mixed liquor characteristics and field working conditions preferred equipment parameter, wherein: form-factor determines primarily for the treatment of capacity; Inclined tube bundle or swash plate 6 quantity determine primarily of the density of liquid under operating mode and viscosity; When carrying out in liquid gassiness or sand content is higher, also can increase gas-distributing pipe at liquid-inlet pipe 1 top or increase sand distribution tube bottom left arm 4, right arm 3.
In using, need control the outlet drain amount of gas, oil, water respectively according to the index request of different media.For convenience of management, monitoring and Controlling System automatically can be taked to realize unattended; Because this device belongs to pressure pipeline category, relatively large pressurized vessel is safer withstand voltage, according to site condition, can be put flexibly or be imbedded in underground by the integral part of pipe type oil air water separator as technical process with suiting measures to local conditions.
Utilize separator provided by the invention and oilfield water mixed liquid Isolation method, significantly can reduce the construction costs of current separation facilities, reduce floor space, reduce running cost; Because the oil of this device, laden water separation process can complete in pipe conveying procedure, higher temperature and pressure can be born, be also applicable to high-temperature closed dewatering process.
It should be noted that, what crude oil of the present invention referred to is exactly oil gas water mixed liquid.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all do in flesh and blood of the present invention any amendment, equivalent to replace and simple modifications etc., all should be included within protection scope of the present invention.
Claims (10)
1. pipe type oil air water separator, it is characterized in that: comprise liquid-inlet pipe (1) arranged in parallel, right arm (3) and left arm (4), liquid-inlet pipe is located at the upside of left and right arm, is connected between liquid-inlet pipe with left and right arm by slope tube (2); Liquid-inlet pipe, left arm, right arm are positioned at leg-of-mutton three summits, and liquid-inlet pipe two ends are respectively fluid inlet (10) and oil outlet (11); Left and right arm one end has water outlet (31).
2. pipe type oil air water separator according to claim 1, it is characterized in that: left and right arm is in same level, the distance between left arm and liquid-inlet pipe equals the distance between right arm and liquid-inlet pipe; Connect left and right arm all vertical with liquid-inlet pipe with every root slope tube of liquid-inlet pipe.
3. pipe type oil air water separator according to claim 2, is characterized in that: be provided with tube bank (5) in slope tube, and tube bank comprises the pipe of more than two.
4. pipe type oil air water separator according to claim 3, is characterized in that: tube bank direction, place is parallel with direction, slope tube place.
5. the pipe type oil air water separator according to claim 2,3 or 4, is characterized in that: be provided with swash plate (6) in left and/or right arm.
6. pipe type oil air water separator according to claim 5, is characterized in that: the swash plate comprising more than two pieces, forms the space that mixed solution flows between swash plate, between swash plate and left/right arm.
7. the pipe type oil air water separator according to claim 2,3 or 4, is characterized in that: liquid-inlet pipe inner chamber top is provided with oil header (7), and compartment of terrain, oil header bottom has water outlet; Left and/or right is propped up tube cavity bottom and is provided with header (8), and compartment of terrain, header top has oil slick mouth.
8. pipe type oil air water separator according to claim 7, it is characterized in that: oil header opening end is connected with oil outlet, header opening end is connected with water outlet.
9. the pipe type oil air water separator according to claim 2,4,6 or 8, is characterized in that: liquid-inlet pipe upper end is provided with effuser (9).
10. utilize a separation method for pipe type oil air water separator described in arbitrary claim in claim 1 to 9, it is characterized in that: comprise the steps,
S1: oil gas water mixed liquid is fed through pipe type oil air water separator by the fluid inlet of liquid-inlet pipe, the gas in oil gas water mixed liquid can enter effuser along standpipe and flow out to feed channel, and crude oil flows out along liquid-inlet pipe to oil outlet, realizes the initial gross separation of oil gas water;
S2: the free-water after flash liberation, by the dispersed oil droplets in the tube bank wall coalescence free-water in slope tube and slope tube, the oil droplet after coalescence is along slope tube or restrain to floating, realizes the secondary separation of oil gas water;
S3: after the mixed solution after secondary separation enters left/right arm, if be provided with swash plate in left/right arm, then oil droplet can carry out coalescence floating under the effect of swash plate wall, enters liquid-inlet pipe again after the oil droplet after coalescence floats upwards enters slope tube; By S3 step, water flows out along the water outlet of left and right arm, is separated for three times that realize oil gas water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510474087.0A CN105000704B (en) | 2015-08-05 | 2015-08-05 | Pipe type oil moisture trap and separation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510474087.0A CN105000704B (en) | 2015-08-05 | 2015-08-05 | Pipe type oil moisture trap and separation method |
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| CN105000704B CN105000704B (en) | 2017-03-01 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107957005A (en) * | 2017-12-21 | 2018-04-24 | 上海兴全电力技术有限公司 | Petroleum pipeline antiscale demulsification heating equipment and oil and gas and water are from method |
| CN108018071A (en) * | 2017-12-21 | 2018-05-11 | 上海兴全电力技术有限公司 | Ultrasonic emulsion breaking oil gas water separator and separation method |
| CN108434785A (en) * | 2018-04-24 | 2018-08-24 | 中国科学院力学研究所 | A kind of oily-water seperating equipment and application |
| CN113297702A (en) * | 2021-06-15 | 2021-08-24 | 中国船舶工业集团公司第七0八研究所 | Flow balance diffusion tube design method |
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| CN113297702A (en) * | 2021-06-15 | 2021-08-24 | 中国船舶工业集团公司第七0八研究所 | Flow balance diffusion tube design method |
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