CN105000704B - Pipe type oil moisture trap and separation method - Google Patents
Pipe type oil moisture trap and separation method Download PDFInfo
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- CN105000704B CN105000704B CN201510474087.0A CN201510474087A CN105000704B CN 105000704 B CN105000704 B CN 105000704B CN 201510474087 A CN201510474087 A CN 201510474087A CN 105000704 B CN105000704 B CN 105000704B
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Abstract
The invention discloses pipe type oil moisture trap, including feed tube arranged in parallel, right arm and left arm, feed tube is located at the upside of left and right arm, the distance between feed tube and left arm are equal to the distance between feed tube and right arm, are connected by slope tube between feed tube and left and right arm.The invention also discloses method pipe type oil gas-water separation being carried out to oil gas water mixed liquid using above-mentioned pipe type oil moisture trap.The present invention is capable of three detached effects, after equipment predrainage through the present invention is processed, it is greatly reduced liquid Water in oil rate, water more than half in mixed liquor can be removed, make sewage with oil rate and entrance that the long-pending index such as miscellaneous meets subsequent treatment process requires.Therefore, mixed liquor, after separation, alleviates the load of crude Treatment system, reduces follow-up equipment scale, improve treatment effeciency, reduce operating cost.
Description
Technical field
The present invention relates to technical field of petroleum extraction, the processing meanss including the mixed liquor to oil field output and process side
Method, specifically for, be pipe type oil moisture trap and separation method.
Background technology
In oil extraction process, at present for High water cut production fluid process conventional method be sedimentation.Detailed process
For:Mixed liquor first passes around a thermo-chemical setting dihydration link, then makees the wet oil of abjection and sewage deep further again
Degree is processed.
But, because substantial amounts of water and oil simultaneously enter heat chemistry settling system, cause precipitation apparatus in large scale, heat
Dosing cost is very high.
In consideration of it, those skilled in the art explore the energy-saving new way of many kinds.
First, the technique carrying out oil gas water pre-separation using settling tank, can reduce and heat or chemical feeding quantity, using similar side
Method, the Chinese patent of Application No. 201520022609.9 discloses a kind of metal wire-drawing waste liquid oil-water separation purification device, that is,
Method using settling tank disposes waste liquid, but the method using bulky settling tank, thus must can take very big face
Long-pending, and operating pressure is relatively low;
2nd, it is the floor space reducing settling tank, someone uses three phase separator pre-dehydration device, Application No.
03242236.9 Chinese patent discloses a kind of oil-water preseparator for extracted liquid, although the said equipment can reduce occupation of land face
Long-pending, but its construction costs is very high, treating capacity is relatively low, and pressure rating is also low;
3rd, it is to reduce construction costs, cost-effective, someone begins to use the hypergravity pre-dehydration device such as cyclone, but,
Oil gas water mixed liquid to different proportion and viscous crude, these devices may be only available for some special ratios oil gas water mixed liquid and
More low viscous viscous crude, for the higher viscous crude of most oil gas water mixed liquid and viscosity, its dehydration is second-rate.And should
Technique needs higher pressure, generally requires to supplement energy in produce reality, increases power to meet its requirement.Meanwhile, this work
Skill robot control system(RCS) is more complicated, controls difficulty larger.
Therefore, obtain a kind of simple, efficient, inexpensive, 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.
Content of the invention
For solving that existing oil and gas and water separating process technical equipment floor space is big, volume big, investment is high, operating cost is high,
The technological deficiencies such as security risk height, inferior separating effect, the invention provides pipe type oil moisture trap is it is achieved that equipment takes up an area
Area is little, small volume, investment is low, the little, oil and gas and water that is not required to increase power, security risk is from the technical purpose such as effect is good.
For achieving the above object, the invention discloses pipe type oil moisture trap, including feed liquor arranged in parallel
Pipe, right arm and left arm, feed tube, located at the upside of left and right arm, is connected by slope tube between feed tube and left and right arm
Connect;Feed tube, left arm, right arm are located at three summits of triangle, and feed tube two ends are respectively inlet and oil-out;
Left and right arm one end has outlet.
Present invention employs and settling tank, three separators, the detached schemes of cyclone hypergravity are substituted with pipeline, solve to pass
Some problems that system method exists.By the difference of oil gas water density, after separating, the oil-out stream from upside for the most oil meeting
Go out, most water then can the outlet from downside flow out.In addition, slope tube inwall also have gathering little oil droplet become larger oil droplet,
Improve the effect of larger oil droplet ascent rate.
Further, left and right arm is in same level, the distance between left arm and feed tube be equal to right arm with
The distance between feed tube;Connect left and right arm all vertical with feed tube with every slope tube of feed tube.
End surfaces circle centre position is propped up on three end points of triangle in said structure explanation feed tube, right arm and a left side, three
Horizontal tube is in the pipe frame structure of triangular form, makes device decentralization be difficult to topple over, is readily transported and installs.The present invention can keep
Potential difference between lower horizontal tube, improves the dehydrating effect of slope tube, simultaneously works as connecting between three horizontal tubes and support
Effect.
Further, it is provided with tube bank in slope tube, tube bank includes the pipe of more than two, the pipe in tube bank is tubule.
In many slope tubes, tubule bundle is installed, improves the contact probability of drop and tube wall, droplet is poly- on tube wall
After integrated big drop, ascent rate is accelerated, and the water of continuous phase, to dirty, play the effect of profit space metathesis, solves in down-flow water
Dispersed oil droplets are because the little ascent rate of diameter is slow, have little time to float to the problem on top.
Further, tube bank place direction is parallel with slope tube place direction.
Further, it is provided with swash plate in left and/or right arm, swash plate extends along left/right arm direction.
Further, the swash plate including more than two pieces, between swash plate, forms between swash plate and left/right arm and mixes liquor stream
Dynamic space.
In two left/right arms, each design installing multilayer incline-plate, can increase the horizontal projected area of runner, formed
" shallow pond effect ", makes the fluid Reynolds number through swash plate region reduce.Multilayer incline-plate preferably solves to cause because device volume is little
The problem that sedimentation time is not enough, improves effect and the efficiency of gravitational settling.
Further, feed liquor tube cavity portion on the upper side is provided with oil collecting pipe, and oil collecting pipe bottom compartment of terrain has outlet;Left and/
Or a right side tube cavity portion on the lower side is provided with collector pipe, collector pipe top compartment of terrain has oil slick mouth.
Also for separating oil and water, mixed liquor is from the one of oil collecting pipe and collector pipe for the setting purpose of oil collecting pipe and collector pipe
End flows into, and the water in oil collecting pipe oil can sink to flowing out along outlet, and the oil in collector pipe water can float along oil slick mouth and flow out, and flows out
Oil and water continue floated in dehydrator standpipe or sunk exchange.
Further, the low wet oil in oil collecting pipe, the low oil-containing water in collector pipe are each passed through the feed tube of blind end
Flow out from the pipe end of catchmenting of oil-collecting pipe end and the left/right arm passing through blind end.Oil collecting pipe opening is connected with oil-out,
Collector pipe opening is connected with outlet.
Further, feed tube upper end is provided with discharge, and discharge is not parallel with feed tube, between feed tube and discharge
Connected by some not contour standpipes.
By arranging discharge, preliminary filtration can be carried out to the gas in mixed liquor, improve the use model of this device
Enclose.
Another goal of the invention of the present invention is to provide is divided to oil gas water using above-mentioned pipe type oil moisture trap
From method.Comprise the steps,
S1:Oil gas water mixed liquid is fed through pipe type oil moisture trap by the inlet of feed tube, oil gas water mixes
Close the gas in liquid and can flow out to feed channel along standpipe entrance discharge, crude oil flows out to oil-out along feed tube, realizes oil gas
The initial gross separation of water;
S2:Free water after first separation, by the dispersion in the tube bank wall coalescence free water in slope tube and slope tube
Oil droplet, the oil droplet after coalescence along slope tube or is restrained to floating, realizes the secondary separation of oil gas water;
S3:After mixed liquor after secondary separation enters left/right arm, if being provided with swash plate in left/right arm, oil droplet can be
Carry out coalescence floating, the oil droplet after coalescence floating enters back into feed tube after being upwardly into slope tube in the presence of swash plate wall;Pass through
S3 step, water flows out along the outlet of left and right arm, realizes three separation of oil gas water.
Beneficial effects of the present invention are:The present invention is capable of three detached effects, the equipment predrainage through the present invention
After process, be greatly reduced liquid Water in oil rate, water extraction more than half in mixed liquor can be gone out, make sewage with oil rate and
The entrance that the long-pending index such as miscellaneous meets subsequent treatment process requires, and therefore, after predrainage, alleviates the negative of crude Treatment system
Lotus, reduces follow-up equipment scale, improves treatment effeciency, reduces operating cost.
In addition, the separator volume of the present invention is little, have simple to operate, operate steadily, efficiency high, safe and reliable,
The advantages of low engineering cost.
Brief description
Fig. 1 is the structural representation of the pipe type oil moisture trap of embodiment one;
Fig. 2 is the schematic cross-section in A-A direction in Fig. 1;
Fig. 3 is the structural representation of the pipe type oil moisture trap of embodiment two and three;
Fig. 4 is the structural representation of the pipe type oil moisture trap of example IV;
Fig. 5 is the structural representation of the pipe type oil moisture trap of embodiment five.
In figure,
1st, feed tube;10th, inlet;11st, oil-out;2nd, slope tube;3rd, right arm;30th, close mouth;31st, outlet;
4th, left arm;5th, restrain;6th, swash plate;7th, oil collecting pipe;8th, collector pipe;9th, discharge.
Specific embodiment
Structure to the pipe type oil moisture trap of the present invention and carry out oil gas water using this structure below in conjunction with the accompanying drawings
Detached method is explained in detail explanation.
Specific embodiment is as follows:
Embodiment one
Pipe type oil moisture trap as shown in Figure 1, 2, the direction that in Fig. 2, flow for liquid in pipe in the direction of arrow,
Pipe type oil moisture trap includes the feed tube 1 of upper end and the left arm 4 of lower end, right arm 3, and left arm 4, right arm 3 are tied
Structure is identical, and feed tube 1, left arm 4, right arm 3 be arranged in parallel, and left arm 4, right arm 3 are horizontally disposed with and are in identical
Highly, the distance between feed tube 1 and left arm 4 can be equal to the distance between feed tube 1 and right arm 3, therefore, feed tube
1st, left arm 4, the end face of right arm 3 fall on three end points of isosceles triangle, and feed tube 1 is led to left arm 4, right arm 3
Excessive root slope tube 2 connects, and every slope tube 2 is all vertical with feed tube 1, and in other words, feed tube 1 is perpendicular to each slope tube 2
Place plane, feed tube 1 one end has inlet 2, and the other end has oil-out 11;Left arm 4, the closing of right arm 3 one end, or
The left arm of person 4, right arm 3 one end are closing mouth 30, and the other end has outlet 31.
For the set-up mode between feed tube 1, the right arm 3 of left arm 4/, the present embodiment simply have chosen a kind of preferable
Setting means.The core of the present invention is the oil gas waterpipe type separator of isosceles triangle shape, in other words, as shown in Figure 2
Set-up mode between feed tube 1 and right arm 3, this kind of mode is the inventive point that the present invention is basic, be also core.
Embodiment two
As Figure 1-3, on the basis of embodiment one, embodiment two is additionally arranged tube bank 5 in slope tube 2.Slope tube 2
Inside it is provided with tube bank 5, tube bank 5 includes the tubule of more than two.The effect of tube bank 5 is to increase the area of tube wall, to improve inflow
The congregational rate of the droplet in slope tube 2.In the present embodiment, tube bank 5 place directions are parallel with slope tube 2 place direction.Tool
The tubule of how many, the density restrained in other words is comprised, those skilled in the art can rationally set as needed in body tube bank
Fixed.
Embodiment three
As shown in figure 3, on the basis of embodiment one or embodiment two, embodiment three is provided with left and/or right arm 3
Swash plate 6, swash plate 6 extends along left arm 4, right arm 3 direction.In the present embodiment, including more than two pieces of swash plate 6, the work of swash plate 6
With similar with tube bank 5 effect, also for increasing contact area, to improve the congregational rate of droplet.Similarly, swash plate is individual
Number, those skilled in the art carry out rationally and advisably selecting as needed.
Example IV
As shown in figure 4, on the basis of embodiment one or embodiment two, example IV employs one kind with embodiment three simultaneously
The scheme of row.Certainly, in the conceived case, example IV is likely to implement with embodiment San Tong method.
Feed tube 1 port of export is closed, and feed tube 1 inner chamber portion on the upper side is provided with oil collecting pipe 7.Oil collecting pipe 7 is along the direction of feed tube 1
Extend, oil collecting pipe 7 bottom compartment of terrain has outlet, for flowing out the water in oil collecting pipe 7, the oil collecting pipe other end passes through closing
Feed tube is as oil-out.Most of crude oil in feed tube, in the presence of density contrast, enters in oil collecting pipe, is flowing over
Cheng Zhong, the water in oil can pass through the outlet of oil collecting pipe bottom setting automatically, sink and enter left and right by feed tube, standpipe
Pipe, relatively low aqueous crude oil exports along oil collecting pipe and flows out;Left arm 4 and/or the closing of right arm 3 both ends open, its inner chamber is on the lower side
Portion is provided with collector pipe 8, and collector pipe 8 extends along left arm 4, right arm 3 direction, and collector pipe 8 top compartment of terrain has oil slick mouth, uses
In flowing out the oil in collector pipe 8, the collector pipe other end passes through the left/right arm of closing as outlet.Feed tube, oil collecting pipe warp
The oil-polluted water that standpipe sinks enters collector pipe, and in flow process, due to the effect of density contrast, the oil in water can be through catchmenting
The oil-out of pipe top setting, enters feed tube, oil collecting pipe, the sewage of remaining relatively low oil-containing through standpipe, goes out along collector pipe
Mouth flows out.In the present embodiment, oil collecting pipe 7, one end of collector pipe 8 flow into mixed liquor, and the other end of collector pipe 8 is with outlet 31 even
Connect, the other end of oil collecting pipe 7 connects to oil-out 11.
Different using profit density, realize the oil in oil collecting pipe 7 collection feed tube 1, collector pipe 8 collects left arm 4 and the right side
The purpose of the water in arm 3.
Embodiment five
As shown in figure 5, on the basis of embodiment one to four, the present embodiment is provided with discharge 9 in feed tube 1 upper end, this
In embodiment, discharge 9 is not parallel with feed tube 1, is connected by some not contour standpipes between feed tube 1 and discharge 9.
The set-up mode of standpipe is evenly distributed between feed tube 1 and discharge 9, for mixed liquor similar to slope tube 2, many standpipes
In gas enter discharge 9 in.
Using pipe type oil moisture trap described in embodiment one to five carry out oil and gas and water from method, specifically include
Following steps:
S1:Oil gas water mixed liquid is fed through pipe type oil moisture trap by the inlet of feed tube, oil gas water mixes
Close the gas in liquid and can flow out to feed channel along standpipe entrance discharge, crude oil flows out to oil-out along feed tube, realizes oil gas
The initial gross separation of water;
S2:Free water after first separation, by the dispersion in the tube bank wall coalescence free water in slope tube and slope tube
Oil droplet, the oil droplet after coalescence along slope tube or is restrained to floating, realizes the secondary separation of oil gas water;
S3:After mixed liquor after secondary separation enters left/right arm, if being provided with swash plate in left/right arm, oil droplet can be
Carry out coalescence floating, the oil droplet after coalescence floating enters back into feed tube after being upwardly into slope tube in the presence of swash plate wall;Pass through
S3 step, water flows out along the outlet of left and right arm, realizes three separation of oil gas water.
If feed tube 1 inner chamber portion on the upper side is eccentrically provided with oil collecting pipe 7, oil collecting pipe 7 bottom compartment of terrain has for outflow water
Outlet;Left arm 4 and/or right arm 3 inner chamber portion on the lower side are eccentrically provided with collector pipe 8, and collector pipe top has for flowing out
The oil slick mouth of oil.Oil collecting pipe through eccentric setting, collector pipe, in the inwall of eccentric pipe outer wall and feed liquor inside pipe wall, left/right arm
Place forms crescent, and the Reynolds number herein for the fluid changes and is gradually reduced, and the difficulty that crude oil enters collector pipe will increase.
Can achieve the initial gross separation of oil gas water by step S1, S2, S3.Concentration can be collected in oil-out 11 higher
Oil, can collect more pure water in outlet 31.
The operation principle of the present invention is as follows:Feed tube 1 front end is oilfield water mixed liquid entrance, and feed tube 1 rear end is
Oil-out 11, flow process can achieve that oil, water are once settlement separate in feed tube 1, and the continuous phase crude oil separating flows to certainly
Oil system, the free water leaking down enters in many slope tubes 2, due to setting tubule bundle 5 in every slope tube 2, in free water
Dispersed oil patch tubule top to floating to feed tube 1, water patch tubule bottom flows downwardly to left arm 4, right arm 3, realizes further
Oil removing purpose;It is mounted with multilayer incline-plate 6 due in left arm 4, right arm 3, little oil when swash plate 6 region, in water for the fluid
Drip side advance edge swash plate 6 lower wall to assemble, the larger oil droplet being formed above swash plate 6 floats, and floats up to feed liquor through slope tube 2 again
Pipe 1, is easy to collect more pure water below swash plate 6.
In the specific implementation, can be according to treating capacity, mixed liquor characteristicses and field working conditions preferred equipment parameter, wherein:Profile
Specification is mainly determined by treating capacity;Inclined tube bundle or swash plate 6 quantity are mainly determined by the density and viscosity of liquid under operating mode;When carrying out liquid
When middle gassiness or sand content are higher, also can increase gas-distributing pipe or in left arm 4, the increase point of right arm 3 bottom at feed tube 1 top
Sandpipe.
In use, respectively the outlet drain amount of gas, oil, water need to be controlled according to the index request of different medium.For
Convenient manage, can take automatic monitoring and control system realize unattended;Because this device belongs to pressure pipeline category, relatively large
Pressure vessel is safer pressure, can be according to site condition, and treatment in accordance with local conditions ground is using pipe type oil moisture trap as technique stream
The ingredient of journey is flexibly put or is imbedded in underground.
The separator being provided using the present invention and oilfield water mixed liquid Isolation method, can be greatly lowered and divide at present
From the construction costs of facility, reduce floor space, reduce running cost;Because the oil of this device, laden water separation process are in pipeline
During can complete, higher temperature and pressure can be born, be also applied for high-temperature closed dewatering process.
It should be noted that what the crude oil of the present invention referred to is exactly oil gas water mixed liquid.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all substantive in the present invention
Any modification, equivalent and simple modifications of being made in content etc., should be included within the scope of the present invention.
Claims (10)
1. pipe type oil moisture trap it is characterised in that:Including feed tube (1) arranged in parallel, right arm (3) and a left side
Arm (4), feed tube is connected by slope tube (2) located between the upside of left and right arm, feed tube and left and right arm;Feed liquor
Pipe, left arm, right arm are located at three summits of triangle, and feed tube two ends are respectively inlet (10) and oil-out (11);
Left and right arm one end has outlet (31).
2. pipe type oil moisture trap according to claim 1 it is characterised in that:Left and right arm is in same level
The distance between face, left arm and feed tube are equal to the distance between right arm and feed tube;Connect left and right arm and feed tube
Every slope tube all vertical with feed tube.
3. pipe type oil moisture trap according to claim 2 it is characterised in that:It is provided with tube bank (5), pipe in slope tube
Bundle includes the pipe of more than two.
4. pipe type oil moisture trap according to claim 3 it is characterised in that:Tube bank place direction and slope tube institute
Parallel in direction.
5. the pipe type oil moisture trap according to claim 2,3 or 4 it is characterised in that:Set in left and/or right arm
There is swash plate (6).
6. pipe type oil moisture trap according to claim 5 it is characterised in that:Including more than two pieces swash plates, tiltedly
Between plate, between swash plate and left/right arm, form the space of mixed liquor flowing.
7. the pipe type oil moisture trap according to claim 2,3 or 4 it is characterised in that:Feed liquor tube cavity top sets
There is oil collecting pipe (7), oil collecting pipe bottom compartment of terrain has outlet;Left and/or right is propped up tube cavity bottom and is provided with collector pipe (8), collection
Water pipe top compartment of terrain has oil slick mouth.
8. pipe type oil moisture trap according to claim 7 it is characterised in that:Oil collecting pipe opening is with oil-out even
Connect, collector pipe opening is connected with outlet.
9. the pipe type oil moisture trap according to claim 2,4,6 or 8 it is characterised in that:Feed tube upper end is provided with
Discharge (9).
10. pipe type oil moisture trap described in a kind of utilization claim 9 separation method it is characterised in that:Including as follows
Step,
S1:Oil gas water mixed liquid is fed through pipe type oil moisture trap, oil gas water mixed liquid by the inlet of feed tube
In gas can along standpipe enter discharge flow out to feed channel, crude oil along feed tube to oil-out flow out, realize oil gas water
Initial gross separation;
S2:Free water after first separation, by the dispersed oil droplets in the tube bank wall coalescence free water in slope tube and slope tube,
Oil droplet after coalescence along slope tube or is restrained to floating, realizes the secondary separation of oil gas water;
S3:After mixed liquor after secondary separation enters left/right arm, if being provided with swash plate in left/right arm, oil droplet can be in swash plate
Carry out coalescence floating, the oil droplet after coalescence floating enters back into feed tube after being upwardly into slope tube in the presence of wall;Walked by S3
Suddenly, water flows out along the outlet of left and right arm, realizes three separation of oil gas water.
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CN107957005B (en) * | 2017-12-21 | 2023-05-09 | 上海兴全电力技术有限公司 | Petroleum pipeline scale prevention demulsification heating equipment and oil-gas-water separation method |
CN108018071B (en) * | 2017-12-21 | 2023-05-19 | 上海兴全电力技术有限公司 | Ultrasonic demulsification oil-gas-water separator and separation method |
CN108434785B (en) * | 2018-04-24 | 2020-01-17 | 中国科学院力学研究所 | Oil-water separation device and application |
CN113297702B (en) * | 2021-06-15 | 2022-07-05 | 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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US2613811A (en) * | 1948-12-09 | 1952-10-14 | Standard Oil Dev Co | Continuous settling apparatus |
CN101411951B (en) * | 2007-10-17 | 2012-02-08 | 中国科学院力学研究所 | Water-oil separating system and method using centrifugation, gravitation, expansion composite principle |
CN101554541B (en) * | 2009-04-03 | 2012-11-28 | 江苏工业学院 | Complex T-shaped pipe separator for multi-phase flow separation and separation method thereof |
CN101810941B (en) * | 2010-04-13 | 2012-07-18 | 中海石油(中国)有限公司深圳分公司 | Compound oil-water separation system |
CN101979118B (en) * | 2010-10-29 | 2012-07-04 | 中国石油集团工程设计有限责任公司 | Multi-branch oil-gas-liquid phase separator |
CN104069650B (en) * | 2014-07-14 | 2016-06-08 | 崔斌 | A kind of water-and-oil separator and oil field oil water mixed solution separation method |
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 |
CN104692481B (en) * | 2015-03-19 | 2017-01-11 | 崔斌 | Decompression air-floating water purification device and decompression air-floating water purification method |
CN204848502U (en) * | 2015-08-05 | 2015-12-09 | 崔斌 | Pipeline formula oil deareator |
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