CN100424024C - Photochemical oxidation method for increasing oilfield sewage prepared polymer solution viscosity - Google Patents
Photochemical oxidation method for increasing oilfield sewage prepared polymer solution viscosity Download PDFInfo
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- CN100424024C CN100424024C CNB2005101336133A CN200510133613A CN100424024C CN 100424024 C CN100424024 C CN 100424024C CN B2005101336133 A CNB2005101336133 A CN B2005101336133A CN 200510133613 A CN200510133613 A CN 200510133613A CN 100424024 C CN100424024 C CN 100424024C
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
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- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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Abstract
The present invention relates to a sewage treatment and injecting polymer method for increasing oilfield sewage prepared polymer solution viscosity through tertiary oil recovery, which comprises the following steps: a photochemical reactor, a catalytic reaction filter tank and a pipeline mixer are orderly connected; oil recovery sewage enters the photochemical reactor to react through bottom aeration; effluent is raised to the catalytic reaction filter tank for catalytic oxidation at the same time of filtration and enters the pipeline mixer from the bottom; PAM is added in front of the pipeline mixer through a metering pump from a medicine dissolving tank and is mixed, and then, polymer reinjection liquid is prepared and is then injected to strata through a high-pressure water pump for oil recovery. The technology produces sewage during oil field treatment, eliminates serious degradation on polymers because of various high-active substances, sulfate reducing bacteria, metatrophic bacteria, etc. in the produced sewage, increases injection liquid viscosity, and enhances the effect of polymer flooding. The method is easy to operate, is especially suitable for the reinjection of some low concentration oilfield produced sewage containing reducing substances after treatment, and has the advantages of low running cost, simple equipment and no secondary pollution generation.
Description
Technical field
The present invention relates to the tertiary oil production in oil field polymer solution made up by sewage and inject, specifically a kind of photochemical oxidation that is used for tertiary oil recovery improves the sewage disposal and the poly-method of notes of oilfield sewage prepared polymer solution viscosity.
Background technology
The oil field began from the eighties, basically adopt the clear water prepared polymer to inject the stratum, like this, want exploiting groundwater on the one hand, on the other hand will be for the oil field remains the sewage standard discharge, along with environmental regulation is strict day by day, mining of groundwater and total amount of sewage discharge all will be restricted, aspect contradictions such as existing tertiary oil recovery technology application and residue sewage disposal can be more outstanding, restricting the development of polymer flooding, and it is a kind of effective way of a head it off that sewage prepared polymer injects.In addition, the polymer flooding of sewage preparation can improve waterflooding effect effectively, improves the water drive degree, further improves the recovery ratio of underground surplus oil.
Studies show that, sewage prepared polymer injects the degraded to the viscosity various degrees of polymers soln, sewage is to the major cause of polymer degradation viscosity reduction, it is the severely degrade that active substance in the on-the-spot high-pressure sealed sewage and sulphate reducing bacteria and saprophytic microorganism etc. produce polymkeric substance, cause the injection fluid viscosity not reach requirement, reduced the effect of polymer flooding.Can improve viscosity in aqueous solution though increase the implantation concentration of polymkeric substance, the corresponding production operation cost that increased makes polymer flooding be difficult to bring into play due economic benefit.Therefore, utilize polymkeric substance and corresponding supporting sewage disposal technology, under the prerequisite that satisfies the oilfield sewage prepared polymer solution requirements, can reduce polymer loading in the polymer flooding process significantly, help the development of tertiary oil recovery and the stable yields synergy in oil field.
Oilfield sewage is the oily(waste)water after dehydrating of crude oil separates of following the oil producing operation extraction, and except that containing suspended solid, dispersed oil and oil slick, oil in water emulsion, also contains volatile phenol, sulfide, Fe
2+Etc. multiple composition and microorganisms such as sulphate reducing bacteria, iron bacteria such as reductibility active pollutant and chemical agents.Consider problems such as environment protection and conserve water resource, it is most economical effective way as the water of productive use reinjection into reservoir that this part sewage is handled the back prepared polymer.
At present, utilize polymkeric substance and corresponding supporting produced-water reinjection treatment technology to mainly contain chemical method.This method generally adopts and adds three anti-medicaments (inhibiter, Scale inhibitors and sterilant).The organic inhibitor that oil field flood pattern is commonly used mainly contains: quaternary ammonium salt, imidazoles phosphoric acid amine, fatty amine, amide derivatives class, pyrrole shallow lake derivatives class, amine and nonionogenic tenside mixture etc.To the oil-field flooding result of use good be quaternary ammonium salt, imidazolines.Scale inhibitors is oil field inhibition the most commonly used and a Technology of slowing down fouling.Widely used polymer antisludging agent mainly is polyacrylic acid and derivative thereof in the oil field.Its advantage is nontoxic, and is free from environmental pollution, and scale inhibition performance is higher.Shortcoming is that its biological degradability is poor, and at high temperature, high pH value, high Ca
2+The scale inhibition ability is relatively poor under the content.
Add sterilant and be and suppress the oil field and inject one of the most extensive, effective means of microbiological corrosions harm such as water system sulphate reducing bacteria, iron bacteria.At present, domestic field use is mainly organic guanidine class, bi-quaternary ammonium salt class, isothiazolinone, quaternary ammonium type sterilant etc.In order to improve bactericidal potency, two or more sterilant can be carried out compositely, utilize synergistic effect, improve drug effect.As SQ8, FH germicide series.Because dithiocyano-methane is easy loss of activity at high temperature, reasons such as quaternary ammonium salt compatibleness difference, the Peracetic Acid that foreign latest is recommended because of have wide spectrum, efficiently, be subjected to pH value and salinity to influence less gaining great popularity.
In addition, now just carrying out positive biological control technical study both at home and abroad, its principle is to utilize biological competition repellency technology, changes the oil pool microorganisms ecological condition, SRB and sulfide value in the oil reservoir produced water is descended, thereby reach the rot-resistant purpose.And emphasis development and exploitation potion multi-purpose multifunctional water treating agent, as natural modified composite high-molecular medicament CG-A series with flocculation, sterilization, corrosion inhibition.
Adopt the ion adjusting process in addition, adjust agent, the water intermediate ion is readjusted by adding a kind of three components (J YA, J YB and J YC), remove some ion after, make water be weakly alkaline, form a kind of stable water body.Thereby eliminated water in input process because the variation of pressure, temperature, flow velocity and the chemical reaction that causes when contact with pipe, jar inwall, so slow down or controlled corrosion and fouling.
Domestic many oil fields still adopt old three sections (promptly big jar receive oil-inclined tube sedimentation-filtering techniques) to carry out re-injection after the water treatment.At present, the treatment process with re-injection after the produced water disposal is generally: gravity separation, dissolved air flotation and fine filtering.For the low permeability oil field produced water disposal, stricter because of low permeability oil field to water quality requirement, have only the fine filtering of utilization and membrane separation technique just can reach its requirement usually, thereby make flow process elongated.And, be difficult to apply because strainer costs an arm and a leg, the life-span is short, need cleaning repeatedly.
Proposition is economical, notes gather sewage disposal technology aeration photochemical oxidation reaction process efficiently, be that photochemical reaction and atmospheric oxidation process are combined, utilize the synergy of photochemical reaction and oxygen, make reaction molecular activation, can be than carrying out single reaction that can not take place under the mild reaction conditions with atmospheric oxidation.Photochemical reaction is at normal temperatures and pressures, under the synergy of air and ultraviolet radiation, the severely degrade that multiple high reactivity material in the elimination extraction sewage and sulphate reducing bacteria and saprophytic microorganism etc. produce polymkeric substance increases and injects fluid viscosity, improves the effect of polymer flooding.The technology that makes oilfield sewage prepared polymer improve soltion viscosity becomes the sewage disposal and the re-injection technology of tertiary oil production in oil field industrial applications operability.
Aeration photochemical reaction and other water technology are compared, and the reaction conditions gentleness is carried out under the normal temperature and pressure; Water quality there is not special requirement; Working cost is low; Required equipment is simple, and floor space is little, and is easy and simple to handle; Do not produce secondary pollution; Be particularly suitable for handling the oil field anaerobism waste water of the high reactivity material of some reductibilities.
Containing petroleum-type, COD with aeration photochemical oxidation reaction treatment
Cr, volatile phenol, sulfide, Fe
2+Deng and sulphate reducing bacteria and saprophytic microorganism etc. bacterium polymkeric substance is produced in the waste water process of severely degrade, be actually volatile phenol, sulfide, Fe in the waste water
2+Contour active pollutant is killed by UVC by photochemical oxidation and sulphate reducing bacteria and saprophytic microorganism etc. bacterium.Its reaction process is, have under the synergy that adds air aeration and ultraviolet radiation on the one hand, can in the aqueous solution, cause the free radical that produces based on OH, because the OH free radical that generates has very strong oxidisability and to the non-selectivity of active ingredient reductibility thing reaction, make petroleum-type, the COD of bio-refractory
Cr, volatile phenol, sulfide, Fe
2+, Mn
2+Become possibility Deng pollutent chemical oxidation at normal temperatures and pressures; On the other hand, processed sulphate reducing bacteria and saprophytic microorganism etc. bacterium is killed by UVC, from also eliminating polymkeric substance is produced severely degrade.Therefore, aeration photochemical oxidation reaction technology need be realized the degraded to active ingredient under the synergy of air and ultraviolet radiation, select suitable aeration intensity and UV condition just can carry out photooxidation reaction and sterilization expeditiously.
Summary of the invention
The object of the present invention is to provide a kind of photochemical oxidation method that tertiary oil production in oil field improves sewage prepared polymer solution viscosity that is used for.
For achieving the above object, technical solution of the present invention is:
Be used for the photochemical oxidation process that tertiary oil production in oil field improves sewage prepared polymer solution viscosity, this technology is connected successively by photochemical reactor 1, catalyzed reaction filter tank 2 and line mixer 3, oil extraction-generated waste water is introduced into photochemical reactor 1 from the bottom, 1 bottom is provided with the micro-hole aerator that is connected with air compressor 4, the dividing plate of band micropore is placed in the aerator top, many row's ultraviolet lamp tubes are installed by lower floor between dividing plate, and many row's ultraviolet lamp tubes, uv-radiation intensity 3 ~ 10 * 10 are installed in the upper strata
4μ W/cm
2By the bottom aeration, in the aeration gas-water ratio is 0.2 ~ 1/1, under 30 ~ 60 ℃ of conditions of temperature of reaction, carries out the aeration photochemical reaction 3 ~ 15 minutes in 1, its water outlet is proceeded catalyzed oxidation by water pump lifting to catalyzed reaction filter tank 2 and is filtered simultaneously, enters line mixer 3 by the bottom water outlet; In catalyzed reaction filter tank 2, loading catalyst between dividing plate, water pump water inlet, 3 ~ 7 minutes catalyzed reaction time; After line mixer the place ahead adds PAM by volume pump from drug dissolving tank 5, mixes, be mixed with polymers soln (re-injection liquid), inject the stratum by high-pressure hydraulic pump again and recover the oil; The catalyzed reaction filter tank regularly carries out air-water backwashing 1 ~ 2 time 2 every days.
The microporous diaphragm aerator of photochemical reactor bottom design is connected with aeration specific equipment air compressor.The average pore of micro-hole aerator is 50 ~ 100um, aerator size 260mm, service area 0.3 ~ 0.7m
2, aeration resistance 150 ~ 200mmH
2O, micro-hole aerator spacing 0.7m.The dividing plate of three layers of band of upper, middle and lower micropore is installed in the aerator top, and the micropore size is 5mm on the dividing plate, and row's ultraviolet lamp tube more than two layers is installed between dividing plate.Lower floor is many row UV185nm ultraviolet lamp tubes, fluorescent tube spacing 0.2m; The upper strata is many row UV254nm ultraviolet lamp tubes, fluorescent tube spacing 0.3m.
The catalysis filter tank is material with the stainless steel, and the microporous diaphragm aerator of bottom design is connected with aeration specific equipment air compressor.The dividing plate of following two layers of band micropore is installed in the aerator top, and the micropore size is 5mm on the dividing plate, micropore spacing 25mm on the dividing plate.The homemade natural manganese sand filtrate (available from Fujian Province's filtrate factory) of the thick 1m of filling between dividing plate, particle diameter 1 ~ 3mm, catalyzer capacity are 30 ~ 40% of catalyzed reaction filter tank capacity.Line mixer adopts tubular static mixer, does not need additionaling power, produces to shunt in pairs, intersect to mix and reverse eddy flow, and mixing efficiency reaches 95%.
Improving the notes collecting process of oil field waste prepared polymer solution viscosity is made up of the mixed preparing and the high-pressure hydraulic pump injection process of aeration dissolved oxygen process, photochemical reaction and sterilization process, catalyzed oxidation while filtration procedure, polymer dissolution and sewage.
Aeration dissolved oxygen process is oily(waste)water and air fully to be contacted the oxygen of air is dissolved in the water rapidly, is atmospheric oxidation and photochemical reaction and sterilization creation necessary precondition condition, and the aeration dissolved oxygen adopts air compressor machine and micro-hole aerator.In photochemical reactor, waste water is inflated and mixing (gas, water) generation air oxidation reaction by the effect of aeration unit.After aeration is handled, under the condition that UVC exists, make volatile phenol in the oil field waste, sulfide, Fe again
2+Issue third contact of a total solar or lunar eclipse chemical oxidation reaction etc. the reductibility active substance in the synergy of air and UVC.The photochemical reactor water outlet enters the catalysis filter tank.
The catalysis filter tank is filtered simultaneously and is filtered backwash process and form by catalyzed oxidation.The oxidation catalyst filter process: send into catalytic filter through the abundant oily(waste)water of aeration, under filtrate is held concurrently the effect of catalyzer air catalytic oxidation takes place, by the catalyzer filtering layer, the reducing substances in the water continues oxidizedly to hold back simultaneously.Clear water after the filter converges through padding layer, water distribution system delivers to tubular static mixer.The polymkeric substance of carrying with drug dissolving tank carries out waterpower and is hybridly prepared into polymers soln and injects the stratum.
Oxidation catalyst filter backwash process: should carry out air-water backwashing behind the catalytic filter work certain hour.Air-water backwashing is distributed on the whole area by water dispensing apparatus, utilizes the back flushing flow velocity of water, makes the catalyzer filtrate be quick condition, and the phase mutual friction, and the impurity in the filtrate is cleaned out, enters water drain with water and send waste water station.Filtrate is rinsed the back well and is recovered catalysis and filtration state.
Description of drawings
Fig. 1 is the notes polymerizing technology synoptic diagram of waste water prepared polymer solution viscosity of the present invention
Wherein, 1. photochemical reactor, 2. catalyzed reaction filter tank, 3. line mixer, 4. air compressor 5. drug dissolving tanks
Useful effect of the present invention
1. the inventive method can effectively be processed the polymer produced waste water that contains that produces in the oil recovery process of oil field. Experimental result shows, uses This technical finesse oil field waste water significantly improves the viscosity of polymer solution made up by sewage, and water filling can directly reach the re-injection requirement, is satisfying But the polymer volume under the prerequisite of oilfield sewage prepared polymer solution requirements in the decrease polymer flooding process is conducive to The stable yields synergy of recovering the oil for three times.
2. the inventive method need not to add medicament, and the aeration mode operation expense of employing is cheap, and actual application value is arranged. Than adopting Save the operation expense with three anti-medical methods.
3. photochemistry air oxidation process operation is easy in the inventive method, and the reaction condition gentleness is carried out at normal temperatures and pressures, Be fit to especially process some low turbidity difficult degradation oil field waste water, the operation expense is cheap, and equipment is simple, and non-secondary pollution produces.
4. aeration air oxidation process operation is easy in the inventive method, carries out at normal temperatures and pressures, and some are low to be fit to processing especially The oil field extracted waste water of concentration anaerobism environment condition, equipment is simple, invests little.
5. this project is developed a kind of economy, efficient photochemical reactor for the oil field extracted waste water of low concentration anaerobism environment condition, under the condition of normal temperature and pressure, and the volatile phenol in the waste water, sulfide, Fe2+Reduce etc. the reproducibility activity substance content. The place Reason efficient height, expense is low. A kind of oil-polluted water modification and the new technology that is used for oil field re-injection raising prepared polymer viscosity And equipment. The oxidation of aeration air and photochemical oxidation effect are combined, and development and design becomes a photochemical reactor, makes air oxygen Change and photochemistry reaction are carried out at normal temperatures and pressures fast.
6. the photochemistry degerming efficient in the inventive method reaches 99.9% ~ 99.999%, the sulfate reducing bacteria in the water and saprophytic bacteria etc. Effectively removed. After processing in the water remaining amount of bacteria can be lower than 50/ml, at former water condition better (such as SS below 5mg/l Or turbidity 10ntu is following), with backflow operation mode can reach 10/below the ml. The operation expense is cheap.
Embodiment
Aeration is to the influence experiment of sewage prepared polymer solution viscosity
With the stainless steel is in the photochemical reactor of material, and 3 bands of parallel placement porous dividing plate is installed the UV254nm of two floor height 350cm and the fluorescent tube of UV185nm, the water pump water inlet.In the aeration gas-water ratio is 0.2～1/1, photochemical reaction time 5min, 45 ℃ of temperature of reaction, injecting water quality is under the condition of petroleum-type 14.1mg/l, pH 6.8, volatile phenol 2.6mg/l, sulfide 2.2mg/l, SS 14.6mg/l and Fe2+2.5mg/l, the photochemical reaction of carrying out respectively under the different aeration rates is handled, processing back sewage adds 1500mg/lPAM respectively and is mixed with polymers soln, detects the injection fluid viscosity, and the results are shown in table 1 in 15 minutes.
Table 1. aeration is to the influence of sewage prepared polymer solution viscosity
Can know by table 1, adopt not the viscosity of the waste water prepared polymer solution of handling through photochemical reaction low, adopt the photochemical reaction of different aeration rates to handle the back sewage prepared polymer solution viscosity and reach more than the 232.9mPa.s.The polymer solution viscosity of preparation is big, can improve waterflooding effect effectively, improves the water drive degree, improves the recovery ratio of underground surplus oil.
Injection length is to the influence experiment of sewage prepared polymer solution viscosity
With the stainless steel is in the photochemical reactor of material, and 3 bands of parallel placement porous dividing plate is installed the UV254nm of two floor height 350cm and the fluorescent tube of UV185nm, the water pump water inlet.In the aeration gas-water ratio is 0.6/1, photochemical reaction time 5min, and 45 ℃ of temperature of reaction, injecting water quality is petroleum-type 14.1mg/l, pH 6.8, volatile phenol 2.6mg/l, sulfide 2.2mg/l, SS 14.6mg/l and Fe
2+2.5mg/l condition under, carry out the aeration photochemical reaction and handle experiment, photochemical reaction is handled back sewage and is added the 1500mg/lPAM prepared polymer solution respectively, detects the variations that different preparation injection lengths are injected fluid viscosities, the results are shown in table 2.
Table 2. injection length is to the influence of sewage prepared polymer solution viscosity
Can know by table 2, adopt the waste water prepared polymer solution viscosity of handling not low, reduce greatly through soltion viscosity after 120 minutes through photochemical reaction; Adopt the aeration photochemical reaction to handle the back sewage prepared polymer solution viscosity and reach 262.5mPa.s, change through soltion viscosity after 120 minutes less, the polymer solution viscosity height of preparation, more stable.Can improve waterflooding effect effectively after the injection, improve the water drive degree, improve the recovery ratio of underground surplus oil.
The photochemical reaction time is to the influence experiment of sewage prepared polymer solution viscosity
With the stainless steel is in the photochemical reactor of material, and 3 bands of parallel placement porous dividing plate is installed the UV254nm of two floor height 350cm and the fluorescent tube of UV185nm, the water pump water inlet.In the aeration gas-water ratio is 0.6/1, photochemical reaction time 3～15min, and 45 ℃ of temperature of reaction, water quality are petroleum-type 14.1mg/l, pH 6.8, volatile phenol 2.6mg/l, sulfide 2.2mg/l, SS 14.6mg/l and Fe
2+2.5mg/l condition under, carry out the aeration photochemical reaction and handle experiment, the sewage after the different photochemical reaction time is handled adds 1500mg/lPAM respectively and is mixed with polymers soln, detects the variation of injecting fluid viscosity, the results are shown in table 3.
The table 3. photochemical reaction treatment time is to the influence of sewage prepared polymer solution viscosity
Can know by table 3, adopt the waste water prepared polymer solution viscosity of handling through photochemical reaction to raise to some extent with the increase in reaction times, sewage prepared polymer solution viscosity reaches 280.4mPa.s, the polymer solution viscosity height of preparation after adopting the aeration photochemical reaction to handle 15min.Can improve waterflooding effect effectively after the injection, improve the water drive degree, improve the recovery ratio of underground surplus oil.
Claims (5)
1. one kind is used for the photochemical oxidation process that tertiary oil production in oil field improves sewage prepared polymer solution viscosity, it is characterized in that: this technology is connected successively by photochemical reactor 1, catalyzed reaction filter tank 2 and line mixer 3, oil extraction-generated waste water is introduced into photochemical reactor 1 from the bottom, 1 bottom is provided with the micro-hole aerator that is connected with air compressor 4, the dividing plate of band micropore is placed in the aerator top, many row's ultraviolet lamp tubes are installed by lower floor between dividing plate, many row's ultraviolet lamp tubes, uv-radiation intensity 3～10 * 10 are installed in the upper strata
4UW/cm
2By the bottom aeration, in the aeration gas-water ratio is 0.2～1/1, under 30～60 ℃ of conditions of temperature of reaction, carries out the aeration photochemical reaction 3～15 minutes in 1, its water outlet is proceeded catalyzed oxidation by water pump lifting to catalyzed reaction filter tank 2 and is filtered simultaneously, enters line mixer 3 by the bottom water outlet; In catalyzed reaction filter tank 2, loading catalyst between dividing plate, water pump water inlet, 3～7 minutes catalyzed reaction time; Being mixed with polymers soln after line mixer the place ahead adds polyacrylamide by volume pump from drug dissolving tank 5, mixes is re-injection liquid, injects the stratum by high-pressure hydraulic pump again and recovers the oil; The catalyzed reaction filter tank regularly carries out air-water backwashing 1～2 time 2 every days.
2. technology according to claim 1, it is characterized in that: wherein said photochemical reactor carries out aeration on reactor bottom, the dividing plate of following three band micropores is installed in the aerator top, many row UV185nm ultraviolet lamp tubes are installed by lower floor between dividing plate, and many row UV254nm ultraviolet lamp tubes are installed on the upper strata.
3. technology according to claim 1 is characterized in that: wherein said catalyzer is commercially available homemade natural manganese sand filtrate, and particle diameter 1～3mm, catalyzer capacity are 30～40% of catalyzed reaction filter tank capacity.
4. technology according to claim 2 is characterized in that: adopt the microporous diaphragm aerator that links to each other with air compressor machine, the average space 50～100um of micro-hole aerator in the described aeration method.
5. technology according to claim 1 and 2 is characterized in that: described polymer solution made up by sewage adopts polyacrylamide, and the mode of polymer solution made up by sewage adopts pipeline static mixer.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2966820B1 (en) * | 2010-11-03 | 2015-04-03 | Spcm Sa | PROCESS FOR TREATING PRODUCTION WATER PRODUCED FROM A PROCESS FOR ASSISTED RECOVERY OF PETROLEUM USING POLYMERS |
| CN102211796B (en) * | 2011-05-25 | 2012-10-24 | 淄博正邦知识产权企划有限公司 | Sewage treating agent and production process thereof |
| CN102276047B (en) * | 2011-06-02 | 2012-11-21 | 东北石油大学 | Method and device for controlling viscosity loss of oil extraction waste water blended polymer |
| CN108758347A (en) * | 2018-05-18 | 2018-11-06 | 中国石油化工股份有限公司 | A method of keep the polymer solution viscosity along journey transmission process to stablize |
| CN110872159B (en) * | 2018-09-04 | 2022-04-22 | 武汉谦豫科技有限公司 | Oil field polymer flooding full sewage polymerization treatment process |
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| US6217778B1 (en) * | 1999-09-08 | 2001-04-17 | Nalco Chemical Company | Anionic and nonionic dispersion polymers for clarification and dewatering |
| CN1415690A (en) * | 2001-10-30 | 2003-05-07 | 大庆油田有限责任公司 | Method for preparing super molecular weight polymer flooding by using sewage produced by the oil field |
| CN1631809A (en) * | 2004-12-08 | 2005-06-29 | 哈尔滨工业大学 | Method for treating oil field produced waste water containing polymer |
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| US6217778B1 (en) * | 1999-09-08 | 2001-04-17 | Nalco Chemical Company | Anionic and nonionic dispersion polymers for clarification and dewatering |
| CN1415690A (en) * | 2001-10-30 | 2003-05-07 | 大庆油田有限责任公司 | Method for preparing super molecular weight polymer flooding by using sewage produced by the oil field |
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