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Experimental study on the CO2 foam injecting way of profile control and flooding in heterogeneousreservoirs

Zhao Jinsheng,Tan Junling,Gu Zhengfu,Liu Xiaochun

Strategic Study of CAE 2012, Volume 14, Issue 11,   Pages 88-93

Abstract:

Aiming at the characteristic of the formation water of Huaqing Chang 6 reservoir and taking the comprehensive foaming ability as evaluation index, 6 foaming agents were optimized. ZY-1 foaming agent was the optimal foaming agent, and the optimal foaming agent concentration and foam stabilizer concentration were 0.5 % and 764 mg/L respectively. On the basis of the foaming agent optimization result, using parallel cores with approximate permeability contrast，CO2 foam flooding experiment was simulated through 2 injection way. The experiment result showed that underground foaming way, CO2 and the foaming agent injected alternately, had higher plugging differential pressure and better displacement efficiency. The optimal injection slug combination was first 0.2 PV (pore volume) foaming agent solution and then 0.4 PV CO2 gas, and the total injected volume was 0.6 PV.

Keywords： heterogeneous reservoirs     CO2 foam     profile control and flooding     injection parameter     experimental    

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Computational design of heterogeneous catalysts and gas separation materials for advanced chemical processing

Huaiwei Shi, Teng Zhou

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 1,   Pages 49-59 doi: 10.1007/s11705-020-1959-0

Abstract: This article selectively focuses on two important process functional materials, namely heterogeneous

Keywords： heterogeneous catalyst     gas separation     solvent     porous adsorbent     material screening and design    

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Application of heterogeneous catalysis to biodiesel synthesis using microalgae oil

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 5, doi: 10.1007/s11783-020-1343-9

Abstract:

• Microalgae oil application for biodiesel synthesis is discussed.

Keywords： Biodiesel     Heterogeneous catalysis     Transesterification     Microalgae oil    

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A numerical study of non-Darcy flow in EGS heat reservoirs during heat extraction

Wenjiong CAO, Wenbo HUANG, Guoling WEI, Yunlong JIN, Fangming JIANG

Frontiers in Energy 2019, Volume 13, Issue 3,   Pages 439-449 doi: 10.1007/s11708-019-0612-4

Abstract: It is deduced by analogy that the fluid flow in enhanced geothermal system (EGS) heat reservoirs maya transient 3D model was presented, taking into consideration the non-Darcy fluid flow in EGS heat reservoirsflow resistance in addition to the Darcy resistance which is imposed to the seepage flow in EGS heat reservoirsFurther, a criterion was analyzed and proposed to judge the onset of the non-Darcy flow in EGS heat reservoirsIf the calculated Forchheimer number is larger than 0.2, the fluid flow in EGS heat reservoirs experiences

Keywords： enhanced geothermal system     non-Darcy flow     heat extraction     Reynolds number     Forchheimer number    

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Undrained seismic bearing capacity of strip footing adjacent to a heterogeneous excavation

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 4,   Pages 566-583 doi: 10.1007/s11709-023-0905-x

Abstract: The analysis of the bearing capacity of strip footings sited near an excavation is critical in geotechnics. In this study, the effects of the geometrical features of the excavation and the soil strength properties on the seismic bearing capacity of a strip footing resting on an excavation were evaluated using the lower and upper bounds of the finite element limit analysis method. The effects of the setback distance ratio (L/B), excavation height ratio (H/B), soil strength heterogeneity (kB/cu), and horizontal earthquake coefficient (kh) were analyzed. Design charts and tables were produced to clarify the relationship between the undrained seismic bearing capacity and the selected parameters.

Keywords： excavation     finite element limit analysis     heterogeneous soil     strip footing     undrained bearing capacity    

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Precursor-driven structural tailoring of iron oxychloride for enhanced heterogeneous Fenton activity

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1533-1543 doi: 10.1007/s11705-023-2330-z

Abstract: Iron oxychloride (FeOCl) is a unique layered material with tunable electronic properties. The conventional synthetic route of chemical vapor transition involves a thermodynamics-driven gas–solid interfacial reaction which often generates macroscopic crystals with stable facets. In this study, through analyzing the effects of the synthetic parameters on the FeOCl synthesis, we discovered the dominant contribution of the α-Fe2O3 precursors on the chemical property of the FeOCl product, and subsequently developed a highly-controllable synthetic route of tailoring the FeOCl structures into small sizes and exposed high-energy facets via a facile and scalable mechanical-chemical approach. The synthesized products could be systematically tuned by the ball-milling conditions of the α-Fe2O3 precursors. With increased milling time, the FeOCl crystallites demonstrated reduced sizes and more exposed (110) facets. Intriguingly, these small-sized FeOCl catalysts exhibited much faster Fenton-like kinetics than the pristine macroscopic FeOCl materials. Specifically, FeOCl catalysts with a 12-hour milling time showed nearly 39 times higher efficiency toward phenol degradation than the pristine FeOCl. The structure-reactivity relationship was further elucidated using the combinatory analysis via density functional theory calculation, electron paramagnetic resonance and radical quenching probe experiments. This work provides a rationale for tailoring the surface structures of FeOCl crystallites for potential applications in environmental catalysis.

Keywords： FeOCl     mechanical activation     heterogeneous Fenton reaction     ball milling    

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of herding behavior of tradable green certificate market players on market efficiency: Insights from heterogeneous

Frontiers in Energy 2023, Volume 17, Issue 2,   Pages 266-285 doi: 10.1007/s11708-021-0752-1

Abstract: This paper proposes and simulates an artificial TGC market model which contains heterogeneous agents,

Keywords： tradable green certificate     herding behavior     evolution     heterogeneous agent model     complex network    

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Using heterogeneous patent network features to rank and discover influential inventors

Yong-ping DU,Chang-qing YAO,Nan LI

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 7,   Pages 568-578 doi: 10.1631/FITEE.1400394

Abstract: entity sorting algorithms are implemented in a homogeneous network, and they are not applicable to a heterogeneouspresent an iteration algorithm called inventor-ranking, to sort the influences of patent inventors in heterogeneousthe traditional methods such as PageRank, our approach takes full advantage of the information in the heterogeneous

Keywords： Heterogeneous patent network     Influence     Rule-based ranking    

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Advances in the technology of explosion in fracturesused in low permeability reservoirs

Li Decong,Chen Li,Lin Yingsong, Ding Yansheng

Strategic Study of CAE 2010, Volume 12, Issue 9,   Pages 52-57

Abstract:

In this paper,the technical idea and the possible applications of this method were briefly introduced. Meanwhile, some related key technical problems were also particularly discussed. A series of research and corresponding advances achieved in recent years were reported in detail. In the end, some suggestion was made for further research.

Keywords： low permeability reservoirs     mechanics of explosion     explosion in fractures     security     simulation experiment    

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Elastic analysis of heterogeneous thick-walled spherical pressure vessels with parabolic varying properties

Keyhan KARAMI, Majid ABEDI, Mohammad ZAMANI NEJAD, Mohammad Hassan LOTFIAN

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 4,   Pages 433-438 doi: 10.1007/s11465-012-0336-1

Abstract: (PET), the displacement and stress components in a thick-walled spherical pressure vessels made of heterogeneous

Keywords： thick-walled spherical vessels     heterogeneous materials     FGM     FEM     parabolic varying properties    

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Association between heavy metals and antibiotic-resistant human pathogens in environmental reservoirs

Christine C. Nguyen, Cody N. Hugie, Molly L. Kile, Tala Navab-Daneshmand

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 3, doi: 10.1007/s11783-019-1129-0

Abstract:

Heavy metals can act as co-selecting agents and promote antibiotic resistance.

Most frequent resistances to heavy metals are observed for zinc and cadmium.

P. aeruginosa and E. coli are commonly resistant to heavy metals and antibiotics.

Heavy metals proliferate antibiotic resistance through co- and cross-resistance.

Heavy metal and antibiotic resistances are common near anthropogenic activities.

Keywords： Zinc     Cadmium     Copper     Lead     E. coli     P. aeruginosa    

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Enhanced heterogeneous Fenton-like activity by Cu-doped BiFeO

Jie Mao, Xie Quan, Jing Wang, Cong Gao, Shuo Chen, Hongtao Yu, Yaobin Zhang

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 6, doi: 10.1007/s11783-018-1060-9

Abstract:

OH played a key role in heterogeneous Fenton-like catalytic oxidation

Keywords： Cu doped BiFeO3     Heterogeneous Fenton-like catalysts     Oxidative degradation    

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Fe-Mn-sepiolite as an effective heterogeneous Fenton-like catalyst for the decolorization of reactive

Chengyuan SU,Weiguang LI,Xingzhe LIU,Xiaofei HUANG,Xiaodan YU

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 1,   Pages 37-45 doi: 10.1007/s11783-014-0729-y

Abstract: of the decolorization of reactive brilliant blue in an aqueous solution using Fe-Mn-sepiolite as a heterogeneous

Keywords： Fe-Mn-sepiolite catalyst     heterogeneous Fenton-like     reactive brilliant blue     homogeneous precipitation    

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Combining extractive heterogeneous-azeotropic distillation and hydrophilic pervaporation for enhanced

Eniko Haaz, Botond Szilagyi, Daniel Fozer, Andras Jozsef Toth

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 5,   Pages 913-927 doi: 10.1007/s11705-019-1877-1

Abstract: A new method which combines extractive heterogeneous-azeotropic distillation (EHAD) and hydrophilic pervaporationThis improved distillation method combines the benefits of heterogeneous-azeotropic and extractive distillationsExtractive heterogeneous-distillation combined with methanol dehydration was found to be more efficient

Keywords： hydrophilic pervaporation     non-ideal mixture     modelling     extractive heterogeneous-azeotropic distillation    

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Heterogeneous reaction mechanism of gaseous HNO

Nan ZHAO,Qingzhu ZHANG,Wenxing WANG

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 5, doi: 10.1007/s11783-016-0836-z

Abstract: We studied the heterogeneous reaction mechanism of gaseous HNO with solid NaCl.HCl is released from heterogeneous reactions between gaseous HNO and solid NaCl.This paper aimed at the heterogeneous reaction between gaseous HNO and solid NaCl.The results imply that water molecules induce the surface reconstruction, which is essential for the heterogeneousHCl is released from heterogeneous reactions between gaseous HNO and solid NaCl and can react with OH

Keywords： Seasalt particles     NaCl     HNO3     Heterogeneous reaction     Reaction mechanism     Density functional theory    

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Title Author Date Type Operation

Experimental study on the CO2 foam injecting way of profile control and flooding in heterogeneousreservoirs

Zhao Jinsheng,Tan Junling,Gu Zhengfu,Liu Xiaochun

Journal Article

Computational design of heterogeneous catalysts and gas separation materials for advanced chemical processing

Huaiwei Shi, Teng Zhou

Journal Article

Application of heterogeneous catalysis to biodiesel synthesis using microalgae oil

Journal Article

A numerical study of non-Darcy flow in EGS heat reservoirs during heat extraction

Wenjiong CAO, Wenbo HUANG, Guoling WEI, Yunlong JIN, Fangming JIANG

Journal Article

Undrained seismic bearing capacity of strip footing adjacent to a heterogeneous excavation

Journal Article

Precursor-driven structural tailoring of iron oxychloride for enhanced heterogeneous Fenton activity

Journal Article

of herding behavior of tradable green certificate market players on market efficiency: Insights from heterogeneous

Journal Article

Using heterogeneous patent network features to rank and discover influential inventors

Yong-ping DU,Chang-qing YAO,Nan LI

Journal Article

Advances in the technology of explosion in fracturesused in low permeability reservoirs

Li Decong,Chen Li,Lin Yingsong, Ding Yansheng

Journal Article

Elastic analysis of heterogeneous thick-walled spherical pressure vessels with parabolic varying properties

Keyhan KARAMI, Majid ABEDI, Mohammad ZAMANI NEJAD, Mohammad Hassan LOTFIAN

Journal Article

Association between heavy metals and antibiotic-resistant human pathogens in environmental reservoirs

Christine C. Nguyen, Cody N. Hugie, Molly L. Kile, Tala Navab-Daneshmand

Journal Article

Enhanced heterogeneous Fenton-like activity by Cu-doped BiFeO

Jie Mao, Xie Quan, Jing Wang, Cong Gao, Shuo Chen, Hongtao Yu, Yaobin Zhang

Journal Article

Fe-Mn-sepiolite as an effective heterogeneous Fenton-like catalyst for the decolorization of reactive

Chengyuan SU,Weiguang LI,Xingzhe LIU,Xiaofei HUANG,Xiaodan YU

Journal Article

Combining extractive heterogeneous-azeotropic distillation and hydrophilic pervaporation for enhanced

Eniko Haaz, Botond Szilagyi, Daniel Fozer, Andras Jozsef Toth

Journal Article

Heterogeneous reaction mechanism of gaseous HNO

Nan ZHAO,Qingzhu ZHANG,Wenxing WANG

Journal Article