CN104310595A - Method for maintaining viscosity of polymer solution prepared by sewage in oil field - Google Patents

Method for maintaining viscosity of polymer solution prepared by sewage in oil field Download PDF

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Publication number
CN104310595A
CN104310595A CN201410586315.9A CN201410586315A CN104310595A CN 104310595 A CN104310595 A CN 104310595A CN 201410586315 A CN201410586315 A CN 201410586315A CN 104310595 A CN104310595 A CN 104310595A
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CN
China
Prior art keywords
bacterium
sewage
denitrification
hydrogen sulfide
polymer solution
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410586315.9A
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Chinese (zh)
Inventor
张守献
徐鹏
潘永强
王刚
徐闯
杜春安
曹功泽
袁长忠
王静
曹嫣镔
宋永亭
汪卫东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Petroleum and Chemical Corp
Oil Production Technology Research Institute of Sinopec Shengli Oilfield Co
Original Assignee
China Petroleum and Chemical Corp
Oil Production Technology Research Institute of Sinopec Shengli Oilfield Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Petroleum and Chemical Corp, Oil Production Technology Research Institute of Sinopec Shengli Oilfield Co filed Critical China Petroleum and Chemical Corp
Priority to CN201410586315.9A priority Critical patent/CN104310595A/en
Publication of CN104310595A publication Critical patent/CN104310595A/en
Pending legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • C02F3/345—Biological treatment of water, waste water, or sewage characterised by the microorganisms used for biological oxidation or reduction of sulfur compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/28—Anaerobic digestion processes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • C02F3/344—Biological treatment of water, waste water, or sewage characterised by the microorganisms used for digestion of mineral oil
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • C02F3/348—Biological treatment of water, waste water, or sewage characterised by the microorganisms used characterised by the way or the form in which the microorganisms are added or dosed
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/101—Sulfur compounds
    • 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 invention discloses a method for maintaining the viscosity of polymer solution prepared by sewage in an oil field and belongs to the technical field of oil-producing sewage treatment. The method comprises the following specific steps of: analysis on temperature, degree of mineralization, content of ions, content of hydrogen sulfide and content of sulfate reducing bacteria; screening of synchronous desulfurization and denitrification strains; screening of an activating agent of the synchronous desulfurization and denitrification strains; determination of process parameters of field test; and site implementation according to the process parameters determined by indoor experiments. The method disclosed by the invention has the advantages that after treatment, the content of hydrogen sulfide is extremely low, the problem of reduction of the viscosity of the polymer solution caused by hydrogen sulfide in the sewage is solved, the long-time stability of the viscosity can be maintained, the used amount of polymer dry powder can be saved, simultaneously the method is safe and environment-friendly and is low in cost and simple in adding process, and the bad influence on the development of the sewage in the oil field due to existence of hydrogen sulfide in the sewage can be effectively reduced. Therefore, the method can be widely applied in the technical field of viscosity-maintaining treatment of the sewage.

Description

A kind of method keeping oilfield sewage prepared polymer solution viscosity
Technical field
The invention belongs to Treatment technology of oil extraction wastewater field, be specifically related to a kind of method keeping oilfield sewage prepared polymer solution viscosity.
Background technology
Along with the continuous intensification of petroleum exploration and development degree, exploitation difficulty is increasing, polymer displacement of reservoir oil tech can improve oil recovery factor effectively, stablize maturing field output, along with continually developing of oil field, Produced Liquid is moisture more and more higher, in order to realize water-saving and emission-reducing, most employing polymer solution made up by sewage, but the hydrogen sulfide generally containing higher concentration in oil-field water dirt and sulphate reducing bacteria, not only exacerbate the corrosion of equipment and tubing string, and considerably reduce the viscosity of polymers soln, reach the polymer viscosity of regulation, the consumption of polymer dry powder will be improved, add the production cost in oil field.
For this situation, the method mainly physico-chemical process of current removal Hydrogen Sulfide in Sewage, comprise the methods such as aerating oxidation, chemical oxidation, chemical precipitation and absorption, all there is the high problem of processing costs in these methods, and be not easy to keep effect in the treatment for reuse process of oil field extracted water.For sulphate reducing bacteria, main employing adds the method for sterilant, can reduce the content of sulphate reducing bacteria in sewage to a certain extent, but still there is many problems, sulphate reducing bacteria improves the adaptability of medicine on the one hand, and the consumption of sterilant is increasing, and effect worse and worse; There is the utilizable nutrition of sulphate reducing bacteria in sewage on the other hand, accelerate growing of sulphate reducing bacteria.
Summary of the invention
Object of the present invention is exactly in view of the foregoing defects the prior art has, a kind of method keeping oilfield sewage prepared polymer solution viscosity is provided, present method consumes the small molecules acid in sewage needed for Growth of Sulfate Reducing Bacteria by biological competition, the growth of inhibiting sulfate reduction bacterium, no longer produce hydrogen sulfide, thus the harm of thoroughly removal of hydrogen sulfide generation, keep oilfield sewage viscosity.
Keep a method for oilfield sewage prepared polymer solution viscosity, it is characterized in that, comprise the following steps:
(1) oilfield sewage water quality analysis
Analysis indexes comprises: sewage temperature, salinity, ion, hydrogen sulfide content and content of sulfate reducing bacteria.
(2) simultaneous desulfurization and denitrification bacterium screening
Screening can tolerate the simultaneous desulfurization and denitrification bacterium of oilfield sewage temperature, salinity, hydrogen sulfide.
(3) screening of simultaneous desulfurization and denitrification bacterium activator
To filter out simultaneous desulfurization and denitrification bacterium adds in oilfield sewage, and adjustment activator composition and component, by detecting the concentration of simultaneous desulfurization and denitrification bacterium, filter out the activator of simultaneous desulfurization and denitrification bacterium.
(4) determination of test in place processing parameter
Utilize simulating lab test method, require according to hydrogen sulfide content and test block polymer solution viscosity the processing parameter determining test in place, comprise simultaneous desulfurization and denitrification bacterium and activator dosage thereof and dosing method.
(5) field conduct
Test in place is carried out according to the test in place processing parameter that laboratory experiment is determined.
Wherein, salinity in described sewage adopts dries that roasting method carries out measuring, hydrogen sulfide content adopts sulfurated hydrogen detection tube method to carry out measuring, sulphate reducing bacteria utilizes MPN method to measure.
Described simultaneous desulfurization and denitrification bacterium is the one in Neisseriaceae and Rhodospirillaceae bacterium, and wherein, Neisseriaceae bacterium is mora Salmonella or Neisseria gonorrhoeae, and Rhodospirillaceae bacterium is rhodospirillum or red spirobacteria.
Described simultaneous desulfurization and denitrification bacterium, its screening method is: first, obtains the bacterium with denitrification function with the screening of denitrifying bacterium test bottle; Secondly, in the test bottle containing denitrification function bacterium, add the sodium sulphite that examination is identical with test block Hydrogen Sulfide in Sewage content, filter out the desulfurization denitrifying bacterium that can reduce hydrogen sulfide content; Finally, the desulfurization denitrifying bacterium filtered out and nutrition-saltpetre and Trisodium Citrate are added in sulphate reduction bacterium testing bottle, investigate Growth of Sulfate Reducing Bacteria situation, thus filter out can the simultaneous desulfurization and denitrification bacterium of inhibiting sulfate reduction bacteria growing.
Described activator is made up of nitrate and phosphoric acid salt, and described nitrate is SODIUMNITRATE or saltpetre, and described phosphoric acid salt is Secondary ammonium phosphate or primary ammonium phosphate.
Described activator component is nitrate and phosphoric acid salt mass ratio is 1:0.6 ~ 0.7.
Described test in place processing parameter is: simultaneous desulfurization and denitrification bacterial classification dosage is 0.01% ~ 0.02% of quality of disposing of sewage every day, dosing method adds for dividing two slug formulas, first slug dosage is 70% ~ 80% of total mass, second slug dosage is 20% ~ 30% of total mass; Activator dosage is 0.005% ~ 0.01% of quality of disposing of sewage every day, and dosing method is continous way.
Beneficial effect of the present invention is: after process, in water, hydrogen sulfide content reduces by more than 90%, solves the polymer solution viscosity decline problem that Hydrogen Sulfide in Sewage causes, can keep long stable viscosity; Save polymer dry powder consumption, the consumption that sewage per ton saves polymer dry powder is greater than 0.3kg/ days; This invention safety, environmental protection, cost is low, adds technique simple, can effectively reduce the detrimentally affect of Hydrogen Sulfide in Sewage existence to water flooding.
Embodiment:
Below in conjunction with specific embodiment, the present invention is described in detail.
Embodiment 1
Shengli Oil Field river mouth oil recovery factory block A joins poly-sewage, and before implementing the present invention, sewage joins poly-viscosity 20mPaS, and injection allocation requires that polymer viscosity is at more than 35mPaS, and every day, sewage load was 2000 tons.Step of the present invention is implemented as follows at this block:
(1) oilfield sewage water quality analysis
Analysis indexes comprises: sewage temperature, salinity, ion, hydrogen sulfide content and content of sulfate reducing bacteria, salinity in sewage adopts dries that roasting method carries out measuring, hydrogen sulfide content adopts sulfurated hydrogen detection tube method to carry out measuring, sulphate reducing bacteria utilizes MPN method to measure, and joins poly-sewage quality analytical results as table 1.
Table 1 block A sewage quality analytical results
Project Content
Temperature, DEG C 42
Cl - 3422
Ca 2+，mg/L 59
Mg 2+，mg/L 23
K ++Na +，mg/L 3279
SO 4 2-，mg/L 26
Total mineralization, mg/L 7621
Hydrogen sulfide content, mg/L 3-5
Sulphate reducing bacteria, individual/mL 1000～2500
(2) simultaneous desulfurization and denitrification bacterium screening
Simultaneous desulfurization and denitrification bacteria selection method is: first, obtains the bacterium with denitrification function with the screening of denitrifying bacterium test bottle; Secondly, in the test bottle containing denitrification function bacterium, adding the examination sodium sulphite identical with testing block Hydrogen Sulfide in Sewage content, filtering out the desulfurization denitrifying bacterium that can reduce hydrogen sulfide content; Finally, the desulfurization denitrifying bacterium filtered out and nutrition-saltpetre and Trisodium Citrate are added in sulphate reduction bacterium testing bottle, investigate Growth of Sulfate Reducing Bacteria situation, thus filter out can the simultaneous desulfurization and denitrification bacterium of inhibiting sulfate reduction bacteria growing.
Carrying out resistance to gentle salt tolerant evaluation experimental by screening the simultaneous desulfurization and denitrification bacterium obtained, filtering out the simultaneous desulfurization and denitrification bacterium of resistance test block temperature and salinity, finally screening the mora Salmonella that the simultaneous desulfurization and denitrification bacterial classification obtained is Neisseriaceae.
(3) screening of simultaneous desulfurization and denitrification bacterium activator
To filter out simultaneous desulfurization and denitrification bacterium adds in oilfield sewage, and adjustment activator composition and component, by detecting the concentration of simultaneous desulfurization and denitrification bacterium, filter out the activator of simultaneous desulfurization and denitrification bacterium.
Finally determine that the activator of simultaneous desulfurization and denitrification bacterium mora Salmonella consists of saltpetre and Secondary ammonium phosphate, saltpetre and Secondary ammonium phosphate mass ratio are 1:0.6.
(4) determination of test in place processing parameter
Utilize simulating lab test method, require according to hydrogen sulfide content and test block polymer solution viscosity the processing parameter determining test in place, comprise simultaneous desulfurization and denitrification bacterium and activator dosage thereof and dosing method.
Block A test in place processing parameter is: simultaneous desulfurization and denitrification bacterium dosage is 0.2 ton, and dosing method adds for dividing two slug formulas, and first slug adds 0.14 ton, and second slug adds 0.06 ton; Activator dosage is every day 0.1 ton, and dosing method is continous way.
(5) field conduct
Test in place is carried out according to the processing parameter that laboratory experiment is determined.
Trace analysis block A match polymer station Hydrogen Sulfide in Sewage content, polymers soln well head average viscosity and mean concns, after process, Hydrogen Sulfide in Sewage drops to below 0.3mg/L by 3.0mg/L, the well head average viscosity of polymers soln is elevated to more than 40mPaS by 20mPaS, saves polymer dry powder 0.7 ton/day.
Embodiment 2
Shengli Oil Field Bin Nan oil recovery factory block B joins poly-sewage, and before implementing the present invention, sewage joins poly-viscosity 10mPaS, and injection allocation requires that polymer viscosity is at more than 30mPaS, and every day, sewage load was 1200 tons.Step of the present invention is implemented as follows at this block:
(1) oilfield sewage water quality analysis
Analysis indexes comprises: sewage temperature, salinity, ion, hydrogen sulfide content and content of sulfate reducing bacteria, salinity in sewage adopts dries that roasting method carries out measuring, hydrogen sulfide content adopts sulfurated hydrogen detection tube method to carry out measuring, sulphate reducing bacteria utilizes MPN method to measure, and joins poly-sewage quality analytical results as table 2.
Table 2 block B joins poly-sewage quality analytical results
Project Content
Temperature, DEG C 25
Cl - 3312
Ca 2+，mg/L 111
Mg 2+，mg/L 38
K ++Na +，mg/L 4192
SO 4 2-，mg/L 74
Total mineralization, mg/L 9511
Hydrogen sulfide content, mg/L 10-20
Sulphate reducing bacteria, individual/mL 2500～6000
(2) simultaneous desulfurization and denitrification bacterial screening
Simultaneous desulfurization and denitrification bacteria selection method is: first, obtains the bacterium with denitrification function with the screening of denitrifying bacterium test bottle; Secondly, in the test bottle containing denitrification function bacterium, add the sodium sulphite that examination is identical with test block Hydrogen Sulfide in Sewage content, filter out the desulfurization denitrifying bacterium that can reduce hydrogen sulfide content; Finally, the desulfurization denitrifying bacterium filtered out and nutrition-saltpetre and Trisodium Citrate are added in sulphate reduction bacterium testing bottle, investigate Growth of Sulfate Reducing Bacteria situation, thus filter out can the simultaneous desulfurization and denitrification bacterium of inhibiting sulfate reduction bacteria growing.
Carry out resistance to gentle salt tolerant evaluation experimental by screening the simultaneous desulfurization and denitrification bacterium obtained, filter out the simultaneous desulfurization and denitrification bacterium of resistance test block temperature and salinity, finally screening the simultaneous desulfurization and denitrification bacterial classification obtained is the rhodospirillum of Rhodospirillaceae.
(3) screening of simultaneous desulfurization and denitrification Stain activation agent
To filter out simultaneous desulfurization and denitrification bacterium adds in oilfield sewage, and adjustment activator composition and component, by detecting the concentration of simultaneous desulfurization and denitrification bacterium, filter out the activator of simultaneous desulfurization and denitrification bacterium.
Finally determine that the activator of simultaneous desulfurization and denitrification bacterium rhodospirillum consists of SODIUMNITRATE and primary ammonium phosphate, SODIUMNITRATE and primary ammonium phosphate mass ratio are 1:0.7.
(4) determination of test in place processing parameter
Utilize simulating lab test method, require according to hydrogen sulfide content and test block polymer solution viscosity the processing parameter determining test in place, comprise simultaneous desulfurization and denitrification bacterium and activator dosage thereof and dosing method.
Block B test in place processing parameter is: simultaneous desulfurization and denitrification bacterium dosage is 0.24 ton, and dosing method adds for dividing two slug formulas, and first slug adds 0.192 ton, and second slug adds 0.048 ton; Activator dosage is every day 0.12 ton, and dosing method is continous way.
(5) field conduct
Test in place is carried out according to the processing parameter that laboratory experiment is determined.
This block match polymer station Hydrogen Sulfide in Sewage content of trace analysis, polymers soln well head average viscosity and mean concns, after process, Hydrogen Sulfide in Sewage drops to below 0.2mg/L by more than 10mg/L, the well head average viscosity of polymers soln is elevated to more than 32mPaS by about 10mPaS, saves polymer dry powder 0.4 ton/day.

Claims (8)

1. keep a method for oilfield sewage prepared polymer solution viscosity, it is characterized in that, specifically comprise the following steps:
(1) oilfield sewage water quality analysis
Analysis indexes comprises: sewage temperature, salinity, ion, hydrogen sulfide content and content of sulfate reducing bacteria;
(2) simultaneous desulfurization and denitrification bacterium screening
Screening can tolerate the simultaneous desulfurization and denitrification bacterium of oilfield sewage temperature, salinity, hydrogen sulfide;
(3) screening of simultaneous desulfurization and denitrification bacterium activator
To filter out simultaneous desulfurization and denitrification bacterium adds in oilfield sewage, and adjustment activator composition and component, by detecting the concentration of simultaneous desulfurization and denitrification bacterium, filter out the activator of simultaneous desulfurization and denitrification bacterium;
(4) determination of test in place processing parameter
Utilize simulating lab test method, require according to hydrogen sulfide content and test block polymer solution viscosity the processing parameter determining test in place, comprise simultaneous desulfurization and denitrification bacterium and activator dosage thereof and dosing method;
(5) field conduct
Test in place is carried out according to the test in place processing parameter that laboratory experiment is determined.
2. the method for maintenance oilfield sewage prepared polymer solution viscosity according to claim 1, it is characterized in that, in described sewage, salinity adopts oven dry roasting method to measure, and hydrogen sulfide content adopts sulfurated hydrogen detection tube method to measure, and sulphate reducing bacteria utilizes MPN method to measure.
3. the method for maintenance oilfield sewage prepared polymer solution viscosity according to claim 1 and 2, is characterized in that, described simultaneous desulfurization and denitrification bacterium is the one in Neisseriaceae and Rhodospirillaceae bacterium.
4. the method for maintenance oilfield sewage prepared polymer solution viscosity according to claim 3, is characterized in that, described Neisseriaceae bacterium is mora Salmonella or Neisseria gonorrhoeae, and Rhodospirillaceae bacterium is rhodospirillum or red spirobacteria.
5. the method for the maintenance oilfield sewage prepared polymer solution viscosity according to claim 1 or 4, it is characterized in that, described simultaneous desulfurization and denitrification bacterium, its screening method is: first, obtains the bacterium with denitrification function with the screening of denitrifying bacterium test bottle; Secondly, in the test bottle containing denitrification function bacterium, adding the examination sodium sulphite identical with testing block Hydrogen Sulfide in Sewage content, filtering out the desulfurization denitrifying bacterium that can reduce hydrogen sulfide content; Finally, the desulfurization denitrifying bacterium filtered out and nutrition-saltpetre and Trisodium Citrate are added in sulphate reduction bacterium testing bottle, investigate Growth of Sulfate Reducing Bacteria situation, thus filter out can the simultaneous desulfurization and denitrification bacterium of inhibiting sulfate reduction bacteria growing.
6. the method for the maintenance oilfield sewage prepared polymer solution viscosity according to claim 1 or 4, it is characterized in that, described activator is made up of nitrate and phosphoric acid salt, and described nitrate is SODIUMNITRATE or saltpetre, and described phosphoric acid salt is Secondary ammonium phosphate or primary ammonium phosphate.
7. the method for maintenance oilfield sewage prepared polymer solution viscosity according to claim 6, is characterized in that, described activator nitrate and phosphoric acid salt mass ratio are 1:0.6 ~ 0.7.
8. the method for the maintenance oilfield sewage prepared polymer solution viscosity according to claim 1 or 6, it is characterized in that, described test in place processing parameter is: simultaneous desulfurization and denitrification bacterial classification dosage is 0.01% ~ 0.02% of quality of disposing of sewage every day, dosing method adds for dividing two slug formulas, first slug dosage is 70% ~ 80% of total mass, second slug dosage is 20% ~ 30% of total mass; Activator dosage is 0.005% ~ 0.01% of quality of disposing of sewage every day, and dosing method is continous way.
CN201410586315.9A 2014-10-27 2014-10-27 Method for maintaining viscosity of polymer solution prepared by sewage in oil field Pending CN104310595A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105236538A (en) * 2015-10-23 2016-01-13 中国石油化工股份有限公司 Method for restraining oil field sewage from generating hydrogen sulfide
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
CN109019994A (en) * 2018-09-30 2018-12-18 中石化节能环保工程科技有限公司 A kind of oil field injection allocation sewage treatment process
CN109336260A (en) * 2018-10-24 2019-02-15 中国石油化工股份有限公司 A method of control oil field acidity produces corrosion
CN111997582A (en) * 2019-05-27 2020-11-27 惠博普(武汉)生物环保科技有限公司 Biological treatment technology for hydraulic control sulfur extracted from oil field
CN112980417A (en) * 2021-03-09 2021-06-18 中国石油大学(北京) Viscosity protective agent for polyacrylamide solution prepared from oilfield sewage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101053329A (en) * 2007-03-23 2007-10-17 新疆德蓝科技有限公司 Bactericidal agent for treating sewage containing oil
CN101987770A (en) * 2010-08-07 2011-03-23 中国石油化工股份有限公司 Method for removing hydrogen sulfide from oil field injection water
CN202107550U (en) * 2011-05-27 2012-01-11 中国石油天然气股份有限公司 Device for removing hydrogen sulfide in oilfield wastewater

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101053329A (en) * 2007-03-23 2007-10-17 新疆德蓝科技有限公司 Bactericidal agent for treating sewage containing oil
CN101987770A (en) * 2010-08-07 2011-03-23 中国石油化工股份有限公司 Method for removing hydrogen sulfide from oil field injection water
CN202107550U (en) * 2011-05-27 2012-01-11 中国石油天然气股份有限公司 Device for removing hydrogen sulfide in oilfield wastewater

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105236538A (en) * 2015-10-23 2016-01-13 中国石油化工股份有限公司 Method for restraining oil field sewage from generating hydrogen sulfide
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
CN109019994A (en) * 2018-09-30 2018-12-18 中石化节能环保工程科技有限公司 A kind of oil field injection allocation sewage treatment process
CN109336260A (en) * 2018-10-24 2019-02-15 中国石油化工股份有限公司 A method of control oil field acidity produces corrosion
CN111997582A (en) * 2019-05-27 2020-11-27 惠博普(武汉)生物环保科技有限公司 Biological treatment technology for hydraulic control sulfur extracted from oil field
CN112980417A (en) * 2021-03-09 2021-06-18 中国石油大学(北京) Viscosity protective agent for polyacrylamide solution prepared from oilfield sewage

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Application publication date: 20150128