CN108439518A - A kind of oil field extracted water short route processing method and its device - Google Patents
A kind of oil field extracted water short route processing method and its device Download PDFInfo
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- CN108439518A CN108439518A CN201810285491.7A CN201810285491A CN108439518A CN 108439518 A CN108439518 A CN 108439518A CN 201810285491 A CN201810285491 A CN 201810285491A CN 108439518 A CN108439518 A CN 108439518A
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- oil
- water
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- short route
- oil field
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 238000003672 processing method Methods 0.000 title claims abstract description 9
- 239000003921 oil Substances 0.000 claims abstract description 90
- 229920000642 polymer Polymers 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 23
- 239000010802 sludge Substances 0.000 claims abstract description 17
- 239000010865 sewage Substances 0.000 claims abstract description 14
- 239000002245 particle Substances 0.000 claims abstract description 11
- 239000013043 chemical agent Substances 0.000 claims abstract description 10
- 239000000839 emulsion Substances 0.000 claims abstract description 10
- 239000000084 colloidal system Substances 0.000 claims abstract description 8
- 239000010779 crude oil Substances 0.000 claims abstract description 8
- 239000012530 fluid Substances 0.000 claims abstract description 8
- 238000005516 engineering process Methods 0.000 claims abstract description 6
- 238000004064 recycling Methods 0.000 claims abstract description 5
- 238000004134 energy conservation Methods 0.000 claims abstract description 4
- 230000007613 environmental effect Effects 0.000 claims abstract description 4
- 238000005189 flocculation Methods 0.000 claims abstract description 4
- 230000002195 synergetic effect Effects 0.000 claims abstract description 4
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 4
- 239000002351 wastewater Substances 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 230000009466 transformation Effects 0.000 claims 2
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 238000009434 installation Methods 0.000 claims 1
- 238000005457 optimization Methods 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 238000002347 injection Methods 0.000 description 10
- 239000007924 injection Substances 0.000 description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000004581 coalescence Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000003814 drug Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 238000005345 coagulation Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000008139 complexing agent Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- -1 flocculant Substances 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
Abstract
The present invention relates to a kind of oil field extracted water short route processing method and its devices, applied to industrial gas oil oil-contaminated water of oil field reinjection technology field, its feature is that water-oil separating flow is short, processing speed is fast, device is designed using modular combination, module number can be distributed rationally according to the variation of sewage load and different quality, the processing module configured does not use demulsifier, the chemical agents such as coagulation-flocculation agent, oil emulsion demulsification efficiency 100%, all preferably oil recycling by the crude oil in water, and except the suspended matters such as macromolecular colloid particle in decontaminated water, sludge and discharge are not generated yet.Module combination fluid turbulent movement characteristic designs, suspended matter in sewage is rapidly removed under microbubble and the synergistic effect of Polymer Physics demulsification piece and shallow pond release and recycles crude oil, while entire short route system is without being arranged settling tank, buffer tank, filter, sludge contaminated-oil basin, dosing and its sludge treatment technique equipment etc..The each processing module of short route system only uses electric drive, and energy conservation and environmental protection, floor space is small, and self-control is not necessarily to by force manual intervention.
Description
Technical field
The present invention relates to a kind of oil field extracted water short route processing methods and its device to be applied to industrial gas oil oil
Field produced-water reinjection process field.
Background technology
Domestic marine and land oil field oil exploitation has been enter into 3 oil recovery stages, and oil recovery water content increases year by year, main at present
It to use water filling, note chemical agent (binary or ternary) etc. oil extraction methods, recovery ratio is improved with this, increases crude output, but
It is that oil field produced water process re-injection difficulty up to standard increases, shows that technological process is long, link equipment is more, big using chemical drugs dosage
Wide in variety, processing procedure generates a large amount of sludge, expense high pollution environment.
Oil field conventional produced water handles typical technological process (for handling 10000 tons daily), and three phase separator goes out
Water+plus demulsification viscosity reduction medicament device+gravitational settling oil removing pot+plus chemical coagulation flocculation plant+secondary gravity settling tank (remove
Oil is except outstanding) shunt filters of+booster pump+more (oil removing except hang)+in addition to defeated buffer tank+output pump (water outlet is delivered to re-injection station).
Chinese invention patent, a kind of entitled oil-water separation method that thin layer coalescence-Gravity Separation is in series, the patent No.：
CN1042845A, which has sketched increases multilayer coalescent deoiling sawmilling physical material in gravity settler, utilizes outside
The negative pressure that generates of water circulating pump carry out the larger oil droplet after adsorbing separation coalescence, recycle grease density contrast oil droplet to assemble again and floats up to
Tank upper surface is recycled, and this method plays certain effect really, and technology is than big tank gravity adding medicine sedimentation separation
Method increases,
But coalescence material easily blocks failure, need to replace in time, very inconvenient, while it is dirty containing polymer to be more not suitable with oil field
The processing of water, because water body is in yellow fraction color, the big emulsification of grease viscosity is serious, therefore the oil droplet ascent rate coalesced is slow, simultaneously
Demulsification function is not designed, water outlet oil-containing is containing outstanding exceeded.
Chinese invention patent, the entitled a kind of processing method and its process flow of oil field extracted water, the patent No.：
CN101905936A, which has sketched is improved in the technique that oil field conventional produced water is handled, in a gravitational settling
Tank front end increases a set of Electrochemical oxidation device, for improving certain molecular structures in sewage, reaches oil and suspended matter easily coalesces
Other not change with the pretreatment purpose of pipeline corrosion protection erosion, there are processing cost height, and environmental pollution is big, show technological process
Long, dosing is big, and sludge generates mostly etc..
Chinese invention patent, a kind of entitled process for treating oil field sewage, the patent No.：CN101054244A.Invention letter
It has stated in the conventional sewage treatment process basic technology of oil field, has increased a set of air-floating apparatus, improved water-oil separating speed, but
There are long flow path precipitation apparatus is more, consumption of chemical agent is wide in variety greatly, especially for the complexing agent NaOH+Ca for improving water quality
(OH) 2 dosages are up to 500mg/l, due to the presence such as oil emulsion and its organic suspended matter in water, increase the dosage of flocculant,
To generate more oil-containing chemical sludges, increase processing cost and the pollution to surrounding enviroment.
Invention content
The present invention relates to a kind of oil field extracted water short route processing method and its devices, are applied to industrial gas oil oil
Field oily wastewater reinjection technology field, overcomes above-mentioned technical deficiency.Its feature is that water-oil separating flow is short, processing speed
Soon, device is designed using modular combination, can distribute module number rationally according to the variation of sewage load and different quality, institute
For the processing module of configuration without using chemical agents such as demulsifier, coagulation-flocculation agent, oil emulsion demulsification efficiency 100% will be in water
Crude oil all preferably oil recycling, and except the suspended matters such as macromolecular colloid particle in decontaminated water, sludge and discharge are not generated yet.Module
It is designed in conjunction with fluid turbulent movement characteristic, under microbubble and the synergistic effect of Polymer Physics demulsification piece and shallow pond release
Suspended matter recycling crude oil is rapidly removed, while entire short route system is dirty it is not necessary that settling tank, buffer tank, filter, sludge is arranged
Oil sump, dosing and its sludge treatment technique equipment etc..The each processing module of short route system only uses electric drive, energy conservation and environmental protection,
Floor space is small, and self-control is not necessarily to by force manual intervention.
Description of the drawings
See Fig. 1 oil field extracted water re-injection short route processing technological flow schematic diagrames
By Fig. 1, the abbreviated system principle schematic of 1+N modules composition is understood：
By three phase separator water 4, (sewage with oil≤1000mg/l, suspended matter≤50mg/, polymer≤600mg/),
Enter 1+N multiple module paralleling processing units through main pipeline, (water outlet oil-containing≤10mg/l, suspends the qualified water after resume module
Object≤5mg/l) by output after the supercharging of output pump 6 to distal end water-injection station, while the good oil of 1+N modules recycling enters oil well and caches
Tank 5, and timing is outer defeated.
Its process characteristic is that water-oil separating flow is short, and processing speed is fast, and device is designed using modular combination, can basis
Module number is distributed in the variation of sewage load and different quality rationally, and the processing module configured is without using demulsifier, coagulation
The chemical agents such as flocculant, oil emulsion demulsification efficiency 100%, by the crude oil in water, all preferably oil recycles, and except in decontaminated water
The suspended matters such as macromolecular colloid particle do not generate sludge and discharge yet.Module combination fluid turbulent movement characteristic designs, in micro- gas
Suspended matter in sewage is rapidly removed under bubble and the synergistic effect of Polymer Physics demulsification piece and shallow pond release and recycles crude oil, together
When entire short route system it is not necessary that settling tank, buffer tank, filter, sludge contaminated-oil basin, dosing and its sludge treatment technique is arranged
Equipment etc..The each processing module of short route system only uses electric drive, and energy conservation and environmental protection, floor space is small, and self-control is strong, is not necessarily to
Manual intervention.
See the single processing module principle schematic diagrams of Fig. 2
Single processing module is by water inlet 1, water outlet 2, air inlet 3, microbubble generator 4, multigroup macromolecule demulsification object
The basic structure that piece 5, release 6, exhaust outlet 7, shell 8 and receiving port 9 form is managed, the course of work is summarized as follows：
When oil-containing sewage with pressure enters module interior conduit by water inlet 1, at the same time nitrogen under pressure (air) is by air inlet 3
Into microbubble generator 4, produced out after micro-bubble is sufficiently mixed with raw water in same pipeline by microbubble generator 4
By quick release under 6 normal pressure of release, in water, dispersed oil, oil slick and bulky grain suspended material are carried by micro-bubble floats
To water surface, the oil emulsion and macromolecular colloid particle of small particle are with flow on 5 surface of multigroup macromolecule demulsification physical chip
Under the turbulent motion of formation and the effect of particle dipole polarization, fast emulsion breaking is agglomerated into larger oil droplet and big colloidal solid is equally micro-
Minute bubbles carrying floats up to water surface, and the crude oil after coalescence is recovered (containing a small amount of colloidal suspension particle) by receiving port,
Entire processing procedure is automatically controlled without manual intervention.
See Fig. 3 Polymer Physics pieces demulsification oil removal principle schematic
Oil removal principle schematic is demulsified it is found that suspending containing oil emulsion and macromolecular colloid by Fig. 3 Polymer Physics pieces
The fluid direction of motion 1 of particle is done fluid turbulent to about 4 two surfaces of Polymer Physics piece and is moved, and Polymer Physics piece 4
Upper surface fluid motion speed V0More than 4 lower surface V of Polymer Physics piece1, i.e. V0＞ V1, and 4 upper surface of Polymer Physics piece
Pressure P0Less than 4 following table surface pressure P of Polymer Physics piece1, i.e. P0＜ P1.Therefore the Polymer Physics piece 4 during fluid motion
The fast pressure of upper surface flow velocity it is small, improve the small oil droplet of oil-in-water type physical chip upper surface 4 collision friction frequency and speed,
To accelerate to crack the surface tension of oil emulsion (oil-in-water type), small oil droplet is released, while also playing suspension
Macromolecular colloid particle by dipole polarization be in bulky grain effect, it is similarly big in the 4 slow pressure of lower surface flow velocity of Polymer Physics piece, have
Conducive to small oil droplet and bulky grain the colloidal suspended substance coalescence cracked, when the grain size of oil droplet and suspension colloid particle all reaches maximum
It after value, is detached from Polymer Physics piece and is carried by bubble and floated, the method that the entire oil removal process that is demulsified uses pure physics does not add
Add any chemical agent.
Specific implementation mode
1, certain Chinese oil field strong base ternary produced water treatment station, 1 set of short route experimental rig (module), technological process reference
(Fig. 1 oil field extracted water re-injection short route processing technological flows schematic diagram).Three phase separator water, day handle water 500m3/ d,
Water quality parameter：PH=, 10.5, oil-containing=1000mmg/l, suspended matter=70mg/l, polymer=980mg/l, highly basic (NaOH)
=2000mg/l, surfactant=72mg/l are run 5 months, and system module equipment is working properly, and continuous sampling detection 10
Secondary, system is averagely discharged oil-containing 20mg/l, suspended matter 10mg/l, and chemical agent, short route system is not used to be generated without sludge,
Meet oil field ternary water process re-injection index, Data Detection is shown in Table 1.
Certain the Chinese oil field strong base ternary produced water treatment station of table 1
2, certain Chinese oil field contains polymer produced water treatment station, 2 sets of short route experimental rig (module), technological process reference
(Fig. 1 oil field extracted water re-injection short route processing technological flows schematic diagram) three phase separator water, day handle water 1000m3/ d,
Water quality parameter：PH=8.5, average oil-containing=300mmg/l, suspended matter=50mg/l, polymer=500mg/l are run 6 months,
2 cover die block device of system is working properly, and continuous sampling detects 10 times, and system is averagely discharged oil-containing 9mg/l, suspended matter 8mg/l,
It does not use chemical agent, short route system to be generated without sludge, meets polymer-containing wastewater processing re-injection index, Data Detection is shown in
Table 2.
Certain the Chinese oil field of table 2 contains polymer produced water treatment station
3, certain Chinese oil field contains polymer produced water treatment station, 4 sets of short route experimental rig (module), technological process reference
(Fig. 1 oil field extracted water re-injection short route processing technological flows schematic diagram) three phase separator water, day handle water 2000m3/ d,
Water quality parameter：PH=8, average oil-containing=200mmg/l, suspended matter=40mg/l, polymer=300mg/l run 2 months, are
System 4 cover die block devices of operation are working properly, and continuous sampling detects 10 times, and system is averagely discharged oil-containing 5mg/l, suspended matter 5mg/
L does not use chemical agent, short route system to be generated without sludge, meets polymer-containing wastewater processing re-injection index, Data Detection
It is shown in Table 3.
Certain the Chinese oil field of table 3 contains polymer produced water treatment station
Claims (3)
1. the present invention relates to a kind of oil field extracted water short route processing method and its device, it is applied to industrial gas oil oil field
Oily wastewater reinjection technology field, feature are that water-oil separating flow is short, and processing speed is fast, and device is set using modular combination
Meter, can distribute module number rationally according to the variation of sewage load and different quality, and the processing module configured is without using broken
The chemical agents such as emulsion, coagulation-flocculation agent, oil emulsion demulsification efficiency 100%, by the crude oil in water, all preferably oil recycles, and removes
The suspended matters such as macromolecular colloid particle in decontaminated water, do not generate sludge and discharge yet.Module combination fluid turbulent movement characteristic is set
It is former to rapidly remove suspended matter recycling under microbubble and the synergistic effect of Polymer Physics demulsification piece and shallow pond release for meter
Oil, while entire short route system is without being arranged settling tank, buffer tank, filter, sludge contaminated-oil basin, dosing and its Treatment of Sludge
Process equipment etc..The each processing module of short route system only uses electric drive, and energy conservation and environmental protection, floor space is small, and self-control is strong
Without manual intervention.
2. a kind of oil field extracted water short route processing method according to claim 1 and its device, it is characterised in that matched
Quantity can be configured according to the variation optimization module of sewage load and different quality by setting water-oil separating module, abbreviated system
It is parallel configuration transformation 100, arranged in series transformation 10 that module, which configures quantitative range,；Each module maximum water inlet
83 ton hours are measured, and configure independent steel operation room.Often set short route system is maximum daily handles 200,000 tons of sewage quantity.
3. a kind of oil field extracted water short route processing method according to claim 1 and its device, it is characterised in that device
The mixed proportion of the nitrogen (or air) provided in module and sewage is 5: 100, the shallow pond release installation site of air-dissolving air-float
2000 millimeters -3000 millimeters away from module bottom, the appearance and size (long * wide * high) of single module is 3000 millimeters of * 2760 millimeters of *
8200 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810285491.7A CN108439518A (en) | 2018-04-03 | 2018-04-03 | A kind of oil field extracted water short route processing method and its device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810285491.7A CN108439518A (en) | 2018-04-03 | 2018-04-03 | A kind of oil field extracted water short route processing method and its device |
Publications (1)
| Publication Number | Publication Date |
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| CN108439518A true CN108439518A (en) | 2018-08-24 |
Family
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| CN201810285491.7A Pending CN108439518A (en) | 2018-04-03 | 2018-04-03 | A kind of oil field extracted water short route processing method and its device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113230697A (en) * | 2021-04-27 | 2021-08-10 | 海际油浮(芜湖)能源科技有限公司 | Three-phase vertical rapid treatment device and method for oilfield produced liquid |
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Application publication date: 20180824 |
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