WO2021254098A1 - Method for reducing viscosity loss by means of regulating and controlling microbial community structure composition in polymer prepared from water produced by oilfield - Google Patents
Method for reducing viscosity loss by means of regulating and controlling microbial community structure composition in polymer prepared from water produced by oilfield Download PDFInfo
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- WO2021254098A1 WO2021254098A1 PCT/CN2021/095391 CN2021095391W WO2021254098A1 WO 2021254098 A1 WO2021254098 A1 WO 2021254098A1 CN 2021095391 W CN2021095391 W CN 2021095391W WO 2021254098 A1 WO2021254098 A1 WO 2021254098A1
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- polymer
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- produced water
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- 229920000642 polymer Polymers 0.000 title claims abstract description 74
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000000813 microbial effect Effects 0.000 title claims abstract description 22
- 239000000203 mixture Substances 0.000 title claims abstract description 20
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 13
- 230000001276 controlling effect Effects 0.000 title abstract description 3
- 239000003381 stabilizer Substances 0.000 claims abstract description 62
- 239000012452 mother liquor Substances 0.000 claims abstract description 36
- 230000006378 damage Effects 0.000 claims abstract description 14
- 238000002360 preparation method Methods 0.000 claims abstract description 12
- 229910002651 NO3 Inorganic materials 0.000 claims abstract description 8
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims abstract description 8
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 claims abstract description 8
- 235000015097 nutrients Nutrition 0.000 claims abstract description 6
- 239000008399 tap water Substances 0.000 claims abstract description 6
- 235000020679 tap water Nutrition 0.000 claims abstract description 6
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical group [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims description 8
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical group [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 claims description 8
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims description 8
- 229920002401 polyacrylamide Polymers 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical group OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims description 4
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 4
- 239000004202 carbamide Substances 0.000 claims description 4
- 235000010344 sodium nitrate Nutrition 0.000 claims description 4
- 239000004317 sodium nitrate Substances 0.000 claims description 4
- 235000010288 sodium nitrite Nutrition 0.000 claims description 4
- 235000010265 sodium sulphite Nutrition 0.000 claims description 4
- ZPWVASYFFYYZEW-UHFFFAOYSA-L dipotassium hydrogen phosphate Chemical compound [K+].[K+].OP([O-])([O-])=O ZPWVASYFFYYZEW-UHFFFAOYSA-L 0.000 claims description 3
- 239000002211 L-ascorbic acid Substances 0.000 claims description 2
- 235000000069 L-ascorbic acid Nutrition 0.000 claims description 2
- 229960005070 ascorbic acid Drugs 0.000 claims description 2
- BHZRJJOHZFYXTO-UHFFFAOYSA-L potassium sulfite Chemical compound [K+].[K+].[O-]S([O-])=O BHZRJJOHZFYXTO-UHFFFAOYSA-L 0.000 claims description 2
- 235000019252 potassium sulphite Nutrition 0.000 claims description 2
- 229910000396 dipotassium phosphate Inorganic materials 0.000 claims 1
- 235000019797 dipotassium phosphate Nutrition 0.000 claims 1
- NTTOTNSKUYCDAV-UHFFFAOYSA-N potassium hydride Chemical compound [KH] NTTOTNSKUYCDAV-UHFFFAOYSA-N 0.000 claims 1
- 229910000105 potassium hydride Inorganic materials 0.000 claims 1
- LWIHDJKSTIGBAC-UHFFFAOYSA-K potassium phosphate Substances [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 claims 1
- 241000894006 Bacteria Species 0.000 abstract description 30
- 244000005700 microbiome Species 0.000 abstract description 7
- 238000002347 injection Methods 0.000 abstract description 4
- 239000007924 injection Substances 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000003247 decreasing effect Effects 0.000 abstract description 3
- 230000002829 reductive effect Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 28
- 239000000243 solution Substances 0.000 description 8
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010790 dilution Methods 0.000 description 3
- 239000012895 dilution Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 241000295146 Gallionellaceae Species 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 241000590020 Achromobacter Species 0.000 description 1
- 241001110242 Aminivibrio Species 0.000 description 1
- 241001534894 Anoxynatronum Species 0.000 description 1
- 241000726110 Azoarcus Species 0.000 description 1
- 241001600130 Comamonadaceae Species 0.000 description 1
- 241000589519 Comamonas Species 0.000 description 1
- 241000605802 Desulfobulbus Species 0.000 description 1
- 241000605716 Desulfovibrio Species 0.000 description 1
- 241000984608 Desulfuromonadales Species 0.000 description 1
- 241001248432 Helicobacteraceae Species 0.000 description 1
- 241000192121 Nitrospira <genus> Species 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000417 fungicide Substances 0.000 description 1
- 238000012165 high-throughput sequencing Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000002147 killing effect Effects 0.000 description 1
- 229910000402 monopotassium phosphate Inorganic materials 0.000 description 1
- 235000019796 monopotassium phosphate Nutrition 0.000 description 1
- 239000010413 mother solution Substances 0.000 description 1
- 239000002332 oil field water Substances 0.000 description 1
- 230000002572 peristaltic effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- PJNZPQUBCPKICU-UHFFFAOYSA-N phosphoric acid;potassium Chemical compound [K].OP(O)(O)=O PJNZPQUBCPKICU-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/582—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of bacteria
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/588—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific polymers
Definitions
- the invention relates to a method for reducing the viscosity loss of a polymer prepared by oil field produced water.
- Oil flooding is the process of extracting oil from the formation.
- Polymer flooding has been widely used in the petroleum industry and is one of the most advantageous enhanced oil recovery processes in many reservoirs.
- the polymer plays a vital role in the application of enhanced oil recovery technology, and the viscosity of the polymer is the key to ensuring the oil displacement ability of the polymer.
- the present invention aims to solve the technical problem that the sulfate reducing bacteria causes the viscosity of the polymer to decrease, and provides a method for regulating the microbial community structure composition in the polymer prepared from the produced water of the oil field to reduce the viscosity loss.
- the mother liquor of the ecological viscosity stabilizer prepared in step 1 is added to the produced water of the oil field where the polymer is formulated to obtain the oil field produced water containing the ecological viscosity stabilizer; the oil field produced water containing the ecological viscosity stabilizer
- the concentration of the mother liquor of the ecological adhesion damage stabilizer prepared in step one is 20mg/L ⁇ 100mg/L;
- the mechanism of the present invention for reducing polymer viscosity loss is: the living environment of sulfate reducing bacteria and denitrifying bacteria are similar, the niche of the population overlaps, and there is a competitive relationship for the same resources.
- the invention can increase the niche of denitrifying bacteria by adding nitrate and nitrite, reduce the niche of sulfate-reducing bacteria, and change the community composition of microorganisms in the dispensing system, thereby reducing the adhesion loss of the polymer.
- the invention reduces the number of sulfate-reducing bacteria in the dispensing system, reduces the utilization of the polymer by the sulfate-reducing bacteria, reduces the viscosity loss of the polymer, and ensures the effective viscosity of the polymer.
- the present invention proposes to reduce the loss of polymer viscosity by adjusting the microbial community, which changes the previous method of controlling bacteria by adding fungicides, and instead uses denitrifying bacteria to inhibit sulfate-reducing bacteria.
- the preparation and use method of the medicine of the method is simple and convenient, and the process is simple.
- the method of the invention can effectively inhibit the sulfate reducing bacteria in the dispensing system without causing harm to the beneficial bacteria in the oil field system.
- Figure 1 is a Heatmap chart of the microorganisms in the samples in Test 4 at the genus level.
- This embodiment is a method for reducing the viscosity loss by regulating the microbial community structure composition in the polymer prepared from the produced water of the oil field, and it is specifically carried out according to the following steps:
- the mother liquor of the ecological viscosity stabilizer prepared in step 1 is added to the produced water of the oil field where the polymer is formulated to obtain the oil field produced water containing the ecological viscosity stabilizer; the oil field produced water containing the ecological viscosity stabilizer
- the concentration of the mother liquor of the ecological adhesion damage stabilizer prepared in step one is 20mg/L ⁇ 100mg/L;
- this embodiment is different from specific embodiment one in that the nitrate described in step one is sodium nitrate. Others are the same as the first embodiment.
- Specific embodiment three This embodiment is different from specific embodiment one or two in that: the nitrite described in step one is sodium nitrite. Others are the same as the first or second embodiment.
- Specific embodiment four This embodiment is different from one of specific embodiments one to three in that the stabilizer described in step one is one or a mixture of L-ascorbic acid, sodium sulfite and potassium sulfite. Others are the same as the first to third embodiments.
- this embodiment is different from specific embodiment four in that the nutrient element in step one is one or a mixture of urea, dipotassium hydrogen phosphate and potassium dihydrogen phosphate. Others are the same as the fourth embodiment.
- this embodiment is different from specific embodiment five in that the concentration of the mother liquor of the ecological viscosity stabilizer prepared in step one in the oil field produced water containing the ecological viscosity stabilizer described in step two is 50 mg/ L. Others are the same as the fifth embodiment.
- Test 1 This test is a method to reduce the viscosity loss by adjusting the microbial community structure in the polymer prepared from the produced water of the oil field. The specific steps are as follows:
- the mother liquor of the ecological viscosity stabilizer prepared in step 1 is added to the produced water of the oil field where the polymer is formulated to obtain the oil field produced water containing the ecological viscosity stabilizer; the oil field produced water containing the ecological viscosity stabilizer
- the concentration of the mother liquor of the ecological viscosity stabilizer prepared in step one is 50mg/L;
- Test 2 This test is a comparative test.
- the polymer mother liquor is prepared with the same polymer prepared oilfield water as the solvent in the test 1.
- the solute is polyacrylamide, and the concentration of polyacrylamide in the polymer mother liquor is 5000mg/L ;
- the same polymer prepared oilfield produced water to the polymer mother liquor to dilute into a low-concentration polymer solution, and dilute two concentrations: the concentration of polyacrylamide in the polymer mother liquor after dilution is 700mg respectively /L and 1000mg/L.
- Test 3 Record the bacteria content, sulfide content and Fe 2+ content of the diluted polymer mother liquor of Test 1 and Test 2 after standing for 48 hours. The specific results are shown in Table 2.
- the ecological adhesion damage stabilizer can significantly reduce the content of sulfate-reducing bacteria, iron bacteria and saprophytic bacteria in the polymer solution. At the same time, the content of sulfide and divalent iron is significantly reduced after adding the ecological viscosity stabilizer treatment.
- Test 4 This test is a method to reduce the viscosity loss by adjusting the microbial community structure in the polymer prepared from the produced water of the oil field. The specific steps are as follows:
- Figure 1 is a Heatmap chart of the microorganisms in the sample at the genus level, which can reflect the content of microorganisms through the change of color. The more the content, the darker the color. Figure 1 can show the difference of the data, especially in the face of huge data, through the visualization of the heat map, you can intuitively understand the distribution or difference of the data.
- the denitrifying bacteria (Anoxynatronum, Aminivibrio, Comamonas, Azoarcus, Nitrospira, Helicobacteraceae, Comamonadaceae, Achromobacter, Thaurea) increased, while sulfate-reducing bacteria (Desulfovibrio, Desulfuromonadales unclassified, Desulfobulbus, DesulforhabdusDesulfomicrobium) decreased.
- the addition of the mother liquor of the ecological damage stabilizer can promote the growth of denitrifying bacteria while inhibiting the growth of sulfate reducing bacteria.
- the ecological viscosity loss stabilizer can indeed reduce viscosity loss by regulating the composition of the microbial community structure.
Abstract
A method for reducing viscosity loss by means of regulating and controlling microbial community structure composition in a polymer prepared from water produced by an oilfield. An ecological viscosity loss stabilizer mother liquor is prepared by means of using (by mass fraction) 15-25% of a nitrate, 1-5% of a nitrite, 1-2% of a stabilizer, 0.1-0.5% of nutrient elements, and the balance of tap water or water produced by an oilfield for polymer preparation. By means of adding a nitrate and a nitrite, the ecological niche of denitrifying bacteria can be improved, the ecological niche of sulfate-reducing bacteria is reduced, and the community composition of microorganisms in an injection allocation system is changed, so that the number of sulfate-reducing bacteria in the injection allocation system is decreased, the viscosity loss of a polymer is reduced, and the effective viscosity of the polymer is ensured. Furthermore, the sulfate-reducing bacteria in the injection allocation system can be effectively inhibited, and no harm is caused to beneficial bacteria in an oilfield system.
Description
本发明涉及一种减少油田采出水配制的聚合物粘度损失的方法。The invention relates to a method for reducing the viscosity loss of a polymer prepared by oil field produced water.
我国石油企业处于开采的中后期，提高采收率是保证开采量的关键。三次采油技术的发展对于保证采收率，维持原油稳定生产，缓解供需压力具有重要的意义。驱油是将石油从地层中开采出来的过程。聚合物驱已在石油工业中广泛应用，是许多油层中最有利的提高采收率工艺之一。聚合物在提高采收率技术的应用中起着至关重要的作用，其中聚合物的粘度是保证聚合物驱油能力的关键。my country's oil companies are in the middle and late stages of exploitation, and increasing the recovery rate is the key to guaranteeing the amount of exploitation. The development of tertiary oil recovery technology is of great significance for ensuring oil recovery, maintaining stable crude oil production, and alleviating pressure on supply and demand. Oil flooding is the process of extracting oil from the formation. Polymer flooding has been widely used in the petroleum industry and is one of the most advantageous enhanced oil recovery processes in many reservoirs. The polymer plays a vital role in the application of enhanced oil recovery technology, and the viscosity of the polymer is the key to ensuring the oil displacement ability of the polymer.
我国油田最开始采用清水配制和稀释聚合物，随着聚合物驱工业化的推广，清水资源缺乏和污水过剩问题突出。为了解决这一矛盾，使油田污水得以循环利用，近些年来我国油田开始利用油田污水进行配制和稀释聚合物，实现了配制成本的降低和资源再利用的双赢结果。但是污水配制和稀释聚合物会导致聚合物粘度发生损失，包括水质和水中微生物对聚合物的影响。目前已有大量的研究表明，对聚合物粘度影响较大的因素主要有还原性物质、盐度和细菌(硫酸盐还原菌、铁细菌、腐生菌等)。其中硫酸盐还原菌是导致聚合物粘度下降的主要细菌，而且硫酸盐还原菌的生长繁殖会产生H
2S，H
2S的存在会造成输水设备和管道的严重点蚀，引起设备损坏和管道穿孔。因此杀灭硫酸盐还原菌或抑制其活性以减少对聚合物粘度的影响及设备的腐蚀，减少硫酸盐还原菌对油田生产运行带来的危害和损失，对于油田生产具有重要意义。
my country's oil fields first used clean water to prepare and dilute polymers. With the promotion of polymer flooding industrialization, the shortage of clean water resources and excess sewage problems have become prominent. In order to solve this contradiction and make oilfield sewage recyclable, in recent years, my country's oilfields have begun to use oilfield sewage to prepare and dilute polymers, achieving a win-win result of reducing the cost of preparation and reusing resources. However, wastewater preparation and dilution of the polymer will cause the loss of polymer viscosity, including the influence of water quality and microorganisms in the water on the polymer. At present, a large number of studies have shown that the main factors that have a greater impact on polymer viscosity are reducing substances, salinity and bacteria (sulfate reducing bacteria, iron bacteria, saprophytic bacteria, etc.). Wherein the sulfate-reducing bacteria is a major cause of bacterial viscosity of the polymer decreased, and the growth and reproduction of SRB produce H 2 S, the presence of H 2 S may cause severe pitting and water piping equipment, causing equipment damage and The pipe is perforated. Therefore, killing sulfate-reducing bacteria or inhibiting their activity to reduce the impact on polymer viscosity and equipment corrosion, reducing the harm and loss caused by sulfate-reducing bacteria to oilfield production and operation is of great significance to oilfield production.
发明内容Summary of the invention
本发明是要解决硫酸盐还原菌导致聚合物粘度下降的技术问题，而提供一种调控油田采出水配制的聚合物中微生物群落结构组成来减少粘度损失的方法。The present invention aims to solve the technical problem that the sulfate reducing bacteria causes the viscosity of the polymer to decrease, and provides a method for regulating the microbial community structure composition in the polymer prepared from the produced water of the oil field to reduce the viscosity loss.
本发明的调控油田采出水配制的聚合物中微生物群落结构组成来减少粘度损失的方法是按以下步骤进行的：The method for reducing the viscosity loss by regulating the microbial community structure composition in the polymer prepared from the produced water of the oil field of the present invention is carried out according to the following steps:
一、制备生态粘损稳定剂母液：按质量分数15％～25％的硝酸盐、1％～5％的亚硝酸盐、1％～2％的稳定剂、0.1％～0.5％的营养元素和余量的自来水或配制聚合物用的油田采出水来称取原料，然后用搅拌器搅拌溶解，得到生态粘损稳定剂母液；1. Preparation of the mother liquor of ecological adhesion damage stabilizer: 15%-25% nitrate, 1%-2% nitrite, 1%-2% stabilizer, 0.1%-0.5% nutrient elements and The remaining amount of tap water or oil field produced water for polymer preparation is used to weigh the raw materials, and then stir and dissolve with a stirrer to obtain the mother liquor of the ecological viscosity stabilizer;
二、将步骤一制备的生态粘损稳定剂母液加入到配制聚合物的油田采出水中，得到含有生态粘损稳定剂的油田采出水；所述的含有生态粘损稳定剂的油田采出水中的步骤一制 备的生态粘损稳定剂母液的浓度为20mg/L～100mg/L；2. The mother liquor of the ecological viscosity stabilizer prepared in step 1 is added to the produced water of the oil field where the polymer is formulated to obtain the oil field produced water containing the ecological viscosity stabilizer; the oil field produced water containing the ecological viscosity stabilizer The concentration of the mother liquor of the ecological adhesion damage stabilizer prepared in step one is 20mg/L～100mg/L;
三、用步骤二制备的含有生态粘损稳定剂的油田采出水配制聚合物母液，然后用步骤二制备的含有生态粘损稳定剂的油田采出水稀释聚合物。3. Prepare the polymer mother liquor with the oilfield produced water containing the ecological viscosity stabilizer prepared in step 2, and then dilute the polymer with the oilfield produced water containing the ecological viscosity stabilizer prepared in step 2.
本发明用于减少聚合物粘度损失的作用机理为：硫酸盐还原菌与反硝化细菌的生存环境相似，种群的生态位存在重叠，对相同的资源存在竞争关系。本发明通过投加硝酸盐和亚硝酸盐可以提高反硝化细菌的生态位，降低硫酸盐还原菌的生态位，改变配注系统中微生物的群落组成，从而减小聚合物的粘损。The mechanism of the present invention for reducing polymer viscosity loss is: the living environment of sulfate reducing bacteria and denitrifying bacteria are similar, the niche of the population overlaps, and there is a competitive relationship for the same resources. The invention can increase the niche of denitrifying bacteria by adding nitrate and nitrite, reduce the niche of sulfate-reducing bacteria, and change the community composition of microorganisms in the dispensing system, thereby reducing the adhesion loss of the polymer.
本发明降低了配注系统中硫酸盐还原菌的数量，减少了硫酸盐还原菌对聚合物的利用，减少聚合物的粘度损失，保证聚合物的有效粘度。The invention reduces the number of sulfate-reducing bacteria in the dispensing system, reduces the utilization of the polymer by the sulfate-reducing bacteria, reduces the viscosity loss of the polymer, and ensures the effective viscosity of the polymer.
本发明的有益效果为：The beneficial effects of the present invention are:
本发明基于生态位重叠与竞争理论，提出了通过调节微生物群落减少聚合物粘度损失，改变了以往通过投加杀菌剂控制细菌的方法，转而以反硝化细菌抑制硫酸盐还原菌。Based on the theory of niche overlap and competition, the present invention proposes to reduce the loss of polymer viscosity by adjusting the microbial community, which changes the previous method of controlling bacteria by adding fungicides, and instead uses denitrifying bacteria to inhibit sulfate-reducing bacteria.
本发明方法药剂配制及使用方法简便，流程简单。The preparation and use method of the medicine of the method is simple and convenient, and the process is simple.
本发明方法能够有效的抑制配注系统中的硫酸盐还原菌，而不会对油田系统中的有益菌造成危害。The method of the invention can effectively inhibit the sulfate reducing bacteria in the dispensing system without causing harm to the beneficial bacteria in the oil field system.
图1为试验四中的样品中微生物在属水平上的Heatmap图。Figure 1 is a Heatmap chart of the microorganisms in the samples in Test 4 at the genus level.
具体实施方式一：本实施方式为一种调控油田采出水配制的聚合物中微生物群落结构组成来减少粘度损失的方法，具体是按以下步骤进行的：Specific embodiment 1: This embodiment is a method for reducing the viscosity loss by regulating the microbial community structure composition in the polymer prepared from the produced water of the oil field, and it is specifically carried out according to the following steps:
一、制备生态粘损稳定剂母液：按质量分数15％～25％的硝酸盐、1％～5％的亚硝酸盐、1％～2％的稳定剂、0.1％～0.5％的营养元素和余量的自来水或配制聚合物用的油田采出水来称取原料，然后用搅拌器搅拌溶解，得到生态粘损稳定剂母液；1. Preparation of the mother liquor of ecological adhesion damage stabilizer: 15%-25% nitrate, 1%-2% nitrite, 1%-2% stabilizer, 0.1%-0.5% nutrient elements and The remaining amount of tap water or oil field produced water for polymer preparation is used to weigh the raw materials, and then stir and dissolve with a stirrer to obtain the mother liquor of the ecological viscosity stabilizer;
二、将步骤一制备的生态粘损稳定剂母液加入到配制聚合物的油田采出水中，得到含有生态粘损稳定剂的油田采出水；所述的含有生态粘损稳定剂的油田采出水中的步骤一制备的生态粘损稳定剂母液的浓度为20mg/L～100mg/L；2. The mother liquor of the ecological viscosity stabilizer prepared in step 1 is added to the produced water of the oil field where the polymer is formulated to obtain the oil field produced water containing the ecological viscosity stabilizer; the oil field produced water containing the ecological viscosity stabilizer The concentration of the mother liquor of the ecological adhesion damage stabilizer prepared in step one is 20mg/L～100mg/L;
三、用步骤二制备的含有生态粘损稳定剂的油田采出水配制聚合物母液，然后用步骤二制备的含有生态粘损稳定剂的油田采出水稀释聚合物。3. Prepare the polymer mother liquor with the oilfield produced water containing the ecological viscosity stabilizer prepared in step 2, and then dilute the polymer with the oilfield produced water containing the ecological viscosity stabilizer prepared in step 2.
具体实施方式二：本实施方式与具体实施方式一不同的是：步骤一中所述的硝酸盐为硝酸钠。其他与具体实施方式一相同。Specific embodiment two: this embodiment is different from specific embodiment one in that the nitrate described in step one is sodium nitrate. Others are the same as the first embodiment.
具体实施方式三：本实施方式与具体实施方式一或二不同的是：步骤一中所述的亚硝酸盐为亚硝酸钠。其他与具体实施方式一或二相同。Specific embodiment three: This embodiment is different from specific embodiment one or two in that: the nitrite described in step one is sodium nitrite. Others are the same as the first or second embodiment.
具体实施方式四：本实施方式与具体实施方式一至三之一不同的是：步骤一中所述的稳定剂为L-抗坏血酸、亚硫酸钠和亚硫酸钾中的一种或几种的混合物。其他与具体实施方式一至三之一相同。Specific embodiment four: This embodiment is different from one of specific embodiments one to three in that the stabilizer described in step one is one or a mixture of L-ascorbic acid, sodium sulfite and potassium sulfite. Others are the same as the first to third embodiments.
具体实施方式五：本实施方式与具体实施方式四不同的是：步骤一中所述的营养元素为尿素、磷酸氢二钾和磷酸二氢钾中的一种或几种的混合物。其他与具体实施方式四相同。Specific embodiment five: this embodiment is different from specific embodiment four in that the nutrient element in step one is one or a mixture of urea, dipotassium hydrogen phosphate and potassium dihydrogen phosphate. Others are the same as the fourth embodiment.
具体实施方式六：本实施方式与具体实施方式五不同的是：步骤二中所述的含有生态粘损稳定剂的油田采出水中的步骤一制备的生态粘损稳定剂母液的浓度为50mg/L。其他与具体实施方式五相同。Specific embodiment six: this embodiment is different from specific embodiment five in that the concentration of the mother liquor of the ecological viscosity stabilizer prepared in step one in the oil field produced water containing the ecological viscosity stabilizer described in step two is 50 mg/ L. Others are the same as the fifth embodiment.
用以下试验对本发明进行验证：The following tests are used to verify the present invention:
试验一：本试验为一种调控油田采出水配制的聚合物中微生物群落结构组成来减少粘度损失的方法，具体是按以下步骤进行的：Test 1: This test is a method to reduce the viscosity loss by adjusting the microbial community structure in the polymer prepared from the produced water of the oil field. The specific steps are as follows:
一、制备生态粘损稳定剂母液：按质量分数20％的硝酸钠、5％的亚硝酸钠、1％亚硫酸钠、0.2％的尿素和余量的自来水来称取原料，然后用搅拌器搅拌溶解，得到生态粘损稳定剂母液；1. Preparation of mother liquor of ecological viscosity stabilizer: weigh the raw materials according to the mass fraction of 20% sodium nitrate, 5% sodium nitrite, 1% sodium sulfite, 0.2% urea and the balance of tap water, and then stir and dissolve with a stirrer , To obtain the mother liquor of the ecological adhesion damage stabilizer;
二、将步骤一制备的生态粘损稳定剂母液加入到配制聚合物的油田采出水中，得到含有生态粘损稳定剂的油田采出水；所述的含有生态粘损稳定剂的油田采出水中的步骤一制备的生态粘损稳定剂母液的浓度为50mg/L；2. The mother liquor of the ecological viscosity stabilizer prepared in step 1 is added to the produced water of the oil field where the polymer is formulated to obtain the oil field produced water containing the ecological viscosity stabilizer; the oil field produced water containing the ecological viscosity stabilizer The concentration of the mother liquor of the ecological viscosity stabilizer prepared in step one is 50mg/L;
三、用步骤二制备的含有生态粘损稳定剂的油田采出水作为溶剂配制聚合物母液，溶质为聚丙烯酰胺，聚合物母液中溶质的浓度为5000mg/L；用搅拌器搅拌4h至溶解完全，转速为400r/min；然后用步骤二制备的含有生态粘损稳定剂的油田采出水稀释聚合物母液，分别稀释至溶质的浓度为700mg/L和1000mg/L。3. Prepare the polymer mother liquor with the oilfield produced water containing the ecological viscosity stabilizer prepared in step 2 as the solvent, the solute is polyacrylamide, and the concentration of the solute in the polymer mother liquor is 5000mg/L; stir with a stirrer for 4h until the dissolution is complete , The rotation speed is 400r/min; then the polymer mother liquor is diluted with the oilfield produced water containing the ecological viscosity stabilizer prepared in step two, and diluted to the solute concentration of 700mg/L and 1000mg/L respectively.
试验二：本试验为对比试验，用与试验一中相同的配制聚合物的油田采出水作为溶剂来配制聚合物母液，溶质为聚丙烯酰胺，聚合物母液中聚丙烯酰胺的浓度为5000mg/L；然后向聚合物母液中加入与试验一中相同的配制聚合物的油田采出水来稀释成低浓度聚合物溶液，分别稀释两种浓度：稀释后聚合物母液中聚丙烯酰胺的浓度分别为700mg/L和1000mg/L。Test 2: This test is a comparative test. The polymer mother liquor is prepared with the same polymer prepared oilfield water as the solvent in the test 1. The solute is polyacrylamide, and the concentration of polyacrylamide in the polymer mother liquor is 5000mg/L ; Then add the same polymer prepared oilfield produced water to the polymer mother liquor to dilute into a low-concentration polymer solution, and dilute two concentrations: the concentration of polyacrylamide in the polymer mother liquor after dilution is 700mg respectively /L and 1000mg/L.
分别记录试验一和试验二稀释后静置0h、12h和24h后聚合物的粘度，验证生态粘损 稳定剂效果，结果如表1所示。Record the viscosity of the polymer after dilution for test 1 and test 2 for 0h, 12h, and 24h respectively to verify the effect of the ecological viscosity stabilizer. The results are shown in Table 1.
表1生态粘损稳定剂对聚合物溶液粘度的影响Table 1 Effect of Eco-viscosity Stabilizer on the Viscosity of Polymer Solution
由表1可知，在不加生态粘损稳定剂母液时，700mg/L的聚合物溶液静置24小时后粘度损失率为16.89％，1000mg/L的聚合物溶液静置24小时后粘度损失率为9.83％；在加入生态粘损稳定剂母液时，700mg/L的聚合物溶液静置24小时后粘度损失率下降到了10.84％，1000mg/L的聚合物溶液静置24小时后粘度损失率下降到了3.96％。It can be seen from Table 1 that when the mother liquor of ecological viscosity stabilizer is not added, the viscosity loss rate of the polymer solution of 700mg/L after standing for 24 hours is 16.89%, and the viscosity loss rate of the polymer solution of 1000mg/L after standing for 24 hours is When adding the mother liquor of ecological viscosity stabilizer, the viscosity loss rate of 700mg/L polymer solution dropped to 10.84% after standing for 24 hours, and the viscosity loss rate of 1000mg/L polymer solution dropped after standing for 24 hours. It's 3.96%.
试验三：分别记录试验一和试验二的稀释后聚合物母液在静置48h后中细菌含量、硫化物含量和Fe
2+的含量，具体结果见表2。
Test 3: Record the bacteria content, sulfide content and Fe 2+ content of the diluted polymer mother liquor of Test 1 and Test 2 after standing for 48 hours. The specific results are shown in Table 2.
表2生态粘损稳定剂对聚合物溶液的影响Table 2 Effect of Eco-viscosity Stabilizer on Polymer Solution
由表2可知，生态粘损稳定剂能够明显减少聚合物溶液中的硫酸盐还原菌、铁细菌和腐生菌的含量。同时，在加入生态粘损稳定剂处理后硫化物和二价铁的含量明显降低。It can be seen from Table 2 that the ecological adhesion damage stabilizer can significantly reduce the content of sulfate-reducing bacteria, iron bacteria and saprophytic bacteria in the polymer solution. At the same time, the content of sulfide and divalent iron is significantly reduced after adding the ecological viscosity stabilizer treatment.
试验四：本试验为一种调控油田采出水配制的聚合物中微生物群落结构组成来减少粘度损失的方法，具体是按以下步骤进行的：Test 4: This test is a method to reduce the viscosity loss by adjusting the microbial community structure in the polymer prepared from the produced water of the oil field. The specific steps are as follows:
一、制备生态粘损稳定剂母液：按质量分数25％的硝酸钠、1％的亚硝酸钠、1％亚硫酸钠、0.2％的尿素、0.2％的磷酸氢二钠和余量的自来水来称取原料，然后用搅拌器搅拌溶解，，得到生态粘损稳定剂母液；1. Preparing the mother liquor of ecological adhesion damage stabilizer: weigh 25% sodium nitrate, 1% sodium nitrite, 1% sodium sulfite, 0.2% urea, 0.2% disodium hydrogen phosphate and the remainder of tap water by mass fraction The raw materials are then stirred and dissolved with a stirrer to obtain the mother liquor of the ecological viscosity stabilizer;
二、在某油田配注站开展生态粘损稳定剂加药试验，采用蠕动泵将步骤一制备的生态粘损稳定剂母液加入到配制聚合物的油田采出水管道中，保证油田采出水中生态粘损稳定剂母液的浓度达到50mg/L，加药方式采用24小时连续加药。在试验过程中对配注站的来水和管道中同一位点加药前后进行取样，并对水样进行高通量测序，分析水样中的微生物群落。2. Carry out the dosing test of the ecological viscosity stabilizer at an oilfield injection station, and use a peristaltic pump to add the ecological viscosity stabilizer mother liquid prepared in step 1 to the oilfield produced water pipeline for the preparation of polymers to ensure the ecology of the oilfield produced water The concentration of the viscosity stabilizer mother solution reaches 50mg/L, and the dosing method adopts 24-hour continuous dosing. During the test, the incoming water from the dispensing station and the same point in the pipeline were sampled before and after dosing, and the water samples were subjected to high-throughput sequencing to analyze the microbial communities in the water samples.
如图1所示，为试验现场加药前后微生物群落在属水平上的变化图，下方的LS代表来水，WJY代表未加生态粘损稳定剂母液，STY代表加入生态粘损稳定剂母液，相同的数字尾号代表同一个位点。As shown in Figure 1, it is the change of the microbial community at the genus level before and after the test site is added. LS at the bottom represents the incoming water, WJY represents the mother liquid without the ecological viscosity stabilizer, and STY represents the mother liquid with the ecological viscosity stabilizer. The same number tails represent the same site.
图1为样品中微生物在属水平上的Heatmap图，即可通过颜色的变化反映微生物的含量的多少，含量越多，颜色就越深。通过图1可以展现数据的差异性，特别是面对庞大的数据，通过热图可视化，可以直观了解数据的分布情况或者差异情况。Figure 1 is a Heatmap chart of the microorganisms in the sample at the genus level, which can reflect the content of microorganisms through the change of color. The more the content, the darker the color. Figure 1 can show the difference of the data, especially in the face of huge data, through the visualization of the heat map, you can intuitively understand the distribution or difference of the data.
由图1所示，油田采出水中存在着丰富的微生物。通过对比加入生态粘损稳定剂前后的微生物群落，发现加入生态粘损稳定剂对微生物的群落影响较大，在加入生态粘损稳定剂后反硝化细菌(Anoxynatronum、Aminivibrio、Comamonas、Azoarcus、Nitrospira、Helicobacteraceae、Comamonadaceae、Achromobacter、Thauera)增加，而硫酸盐还原菌(Desulfovibrio、Desulfuromonadales unclassified、Desulfobulbus、DesulforhabdusDesulfomicrobium)减少。从微生物群落的角度可以看出，生态粘损稳定剂母液的加入可以促进反硝化细菌的生长，同时抑制硫酸盐还原菌的生长。也从微观的角度证实了生态粘损稳定剂确实可以通过调控微生物群落结构组成控制减少粘度损失。As shown in Figure 1, there are abundant microorganisms in the produced water of the oilfield. By comparing the microbial community before and after adding the ecological viscosity stabilizer, it is found that the addition of the ecological viscosity stabilizer has a greater impact on the microbial community. After the ecological viscosity stabilizer is added, the denitrifying bacteria (Anoxynatronum, Aminivibrio, Comamonas, Azoarcus, Nitrospira, Helicobacteraceae, Comamonadaceae, Achromobacter, Thaurea) increased, while sulfate-reducing bacteria (Desulfovibrio, Desulfuromonadales unclassified, Desulfobulbus, DesulforhabdusDesulfomicrobium) decreased. From the perspective of the microbial community, it can be seen that the addition of the mother liquor of the ecological damage stabilizer can promote the growth of denitrifying bacteria while inhibiting the growth of sulfate reducing bacteria. From a microscopic point of view, it is also confirmed that the ecological viscosity loss stabilizer can indeed reduce viscosity loss by regulating the composition of the microbial community structure.
Claims (7)
- 一种调控油田采出水配制的聚合物中微生物群落结构组成来减少粘度损失的方法，其特征在于调控油田采出水配制的聚合物中微生物群落结构组成来减少粘度损失的方法是按以下步骤进行的：A method for reducing the viscosity loss by regulating the microbial community structure composition in the polymer prepared by oilfield produced water is characterized in that the method for regulating the microbial community structure composition in the polymer prepared by the oilfield produced water to reduce viscosity loss is carried out according to the following steps :一、制备生态粘损稳定剂母液：按质量分数15％～25％的硝酸盐、1％～5％的亚硝酸盐、1％～2％的稳定剂、0.1％～0.5％的营养元素和余量的自来水或配制聚合物用的油田采出水来称取原料，然后用搅拌器搅拌溶解，得到生态粘损稳定剂母液；1. Preparation of the mother liquor of ecological adhesion damage stabilizer: 15%-25% nitrate, 1%-2% nitrite, 1%-2% stabilizer, 0.1%-0.5% nutrient elements and The remaining amount of tap water or oil field produced water for polymer preparation is used to weigh the raw materials, and then stir and dissolve with a stirrer to obtain the mother liquor of the ecological viscosity stabilizer;二、将步骤一制备的生态粘损稳定剂母液加入到配制聚合物的油田采出水中，得到含有生态粘损稳定剂的油田采出水；所述的含有生态粘损稳定剂的油田采出水中的步骤一制备的生态粘损稳定剂母液的浓度为20mg/L～100mg/L；2. The mother liquor of the ecological viscosity stabilizer prepared in step 1 is added to the produced water of the oil field where the polymer is formulated to obtain the oil field produced water containing the ecological viscosity stabilizer; the oil field produced water containing the ecological viscosity stabilizer The concentration of the mother liquor of the ecological adhesion damage stabilizer prepared in step one is 20 mg/L to 100 mg/L;三、用步骤二制备的含有生态粘损稳定剂的油田采出水配制聚合物母液，然后用步骤二制备的含有生态粘损稳定剂的油田采出水稀释聚合物。3. Prepare the polymer mother liquor with the oilfield produced water containing the ecological viscosity stabilizer prepared in step 2, and then dilute the polymer with the oilfield produced water containing the ecological viscosity stabilizer prepared in step 2.
- 根据权利要求1所述的一种调控油田采出水配制的聚合物中微生物群落结构组成来减少粘度损失的方法，其特征在于步骤一中所述的硝酸盐为硝酸钠。The method for reducing the viscosity loss by adjusting the microbial community structure composition in a polymer prepared from oil field produced water according to claim 1, wherein the nitrate in step one is sodium nitrate.
- 根据权利要求1所述的一种调控油田采出水配制的聚合物中微生物群落结构组成来减少粘度损失的方法，其特征在于步骤一中所述的亚硝酸盐为亚硝酸钠。The method for reducing viscosity loss by regulating the microbial community structure composition in a polymer prepared from oil field produced water according to claim 1, wherein the nitrite in step one is sodium nitrite.
- 根据权利要求1所述的一种调控油田采出水配制的聚合物中微生物群落结构组成来减少粘度损失的方法，其特征在于步骤一中所述的稳定剂为L-抗坏血酸、亚硫酸钠和亚硫酸钾中的一种或几种的混合物。The method for reducing viscosity loss by regulating the microbial community structure composition in a polymer prepared from oilfield produced water according to claim 1, wherein the stabilizer in step one is L-ascorbic acid, sodium sulfite and potassium sulfite One or a mixture of several.
- 根据权利要求1所述的一种调控油田采出水配制的聚合物中微生物群落结构组成来减少粘度损失的方法，其特征在于步骤一中所述的营养元素为尿素、磷酸氢二钾和磷酸二氢钾中的一种或几种的混合物。The method for reducing viscosity loss by regulating the microbial community structure composition in the polymer prepared from oilfield produced water according to claim 1, wherein the nutrient elements in step one are urea, dipotassium hydrogen phosphate and dipotassium phosphate One or a mixture of several kinds of potassium hydride.
- 根据权利要求1所述的一种调控油田采出水配制的聚合物中微生物群落结构组成来减少粘度损失的方法，其特征在于步骤二中所述的含有生态粘损稳定剂的油田采出水中的步骤一制备的生态粘损稳定剂母液的浓度为50mg/L。The method for reducing viscosity loss by regulating the microbial community structure composition in the polymer prepared by oilfield produced water according to claim 1, characterized in that the oilfield produced water containing ecological viscosity loss stabilizer described in step 2 contains The concentration of the mother liquor of the ecological viscosity stabilizer prepared in step one is 50 mg/L.
- 根据权利要求1所述的一种调控油田采出水配制的聚合物中微生物群落结构组成来减少粘度损失的方法，其特征在于步骤三中所述的聚合物母液中的聚合物为聚丙烯酰胺。The method for reducing viscosity loss by regulating the microbial community structure composition in a polymer prepared from oil field produced water according to claim 1, wherein the polymer in the polymer mother liquor in step 3 is polyacrylamide.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994019287A1 (en) * | 1993-02-16 | 1994-09-01 | Geo-Microbial Technologies, Inc. | Method for preventing hydrogen sulfide formation |
| CN102153997A (en) * | 2011-03-07 | 2011-08-17 | 天津亿利科能源科技发展股份有限公司 | Hydrogen sulfide treating agent for oil fields and method for treating hydrogen sulfide |
| US20130160994A1 (en) * | 2011-09-07 | 2013-06-27 | E I Du Pont De Nemours And Company | Reducing sulfide in production fluids during oil recovery |
| CN103764949A (en) * | 2011-09-07 | 2014-04-30 | 纳幕尔杜邦公司 | Reducing sulfide in production fluids during oil recovery |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994019287A1 (en) * | 1993-02-16 | 1994-09-01 | Geo-Microbial Technologies, Inc. | Method for preventing hydrogen sulfide formation |
| CN102153997A (en) * | 2011-03-07 | 2011-08-17 | 天津亿利科能源科技发展股份有限公司 | Hydrogen sulfide treating agent for oil fields and method for treating hydrogen sulfide |
| US20130160994A1 (en) * | 2011-09-07 | 2013-06-27 | E I Du Pont De Nemours And Company | Reducing sulfide in production fluids during oil recovery |
| CN103764949A (en) * | 2011-09-07 | 2014-04-30 | 纳幕尔杜邦公司 | Reducing sulfide in production fluids during oil recovery |
| CN111662700A (en) * | 2020-06-17 | 2020-09-15 | 华辰环保能源(广州)有限责任公司 | Method for reducing viscosity loss by regulating and controlling microbial community structure composition in polymer prepared from oilfield produced water |
Non-Patent Citations (2)
| Title |
|---|
| YIN ZICHAO, XU PENG;ZHANG SIYAO;WANG HAO;ZHANG XIUXIA;WANG WEIDONG: "Technology of Sulfide Control for Wastewater Treatment of Oil Field", WATER PURIFICATION TECHNOLOGY, vol. 36, no. 3, 25 March 2017 (2017-03-25), XP055881640, ISSN: 1009-0177, DOI: 10.15890/j.cnki.jsjs.2017.03.016 * |
| YIN ZICHAO: "Research on Sulfide Control of Oilfield Wastewater and the Stability of Polymer Solution", CHINESE SELECTED DOCTORAL DISSERTATIONS AND MASTER’S THESES FULL-TEXT DATABASES (DOCTORAL), ENGINEERING SCIENCE & TECHNOLOGY I, no. 7, 15 July 2019 (2019-07-15), XP055881638 * |
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| CN111662700B (en) | 2023-08-08 |
| CN111662700A (en) | 2020-09-15 |
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