The Experts below are selected from a list of 3852 Experts worldwide ranked by ideXlab platform
Tarek Alarbi Omar Ganat - One of the best experts on this subject based on the ideXlab platform.
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chemical Sand Consolidation from polymers to nanoparticles
Polymers, 2020Co-Authors: Fahd Saeed Alakbari, Mysara Eissa Mohyaldinn, Ali Samer Muhsan, Nurul Hasan, Tarek Alarbi Omar GanatAbstract:The chemical Sand Consolidation methods involve pumping of chemical materials, like furan resin and silicate non-polymer materials into unconsolidated Sandstone formations, in order to minimize Sand production with the fluids produced from the hydrocarbon reservoirs. The injected chemical material, predominantly polymer, bonds Sand grains together, lead to higher compressive strength of the rock. Hence, less amounts of Sand particles are entrained in the produced fluids. However, the effect of this bonding may impose a negative impact on the formation productivity due to the reduction in rock permeability. Therefore, it is always essential to select a chemical material that can provide the highest possible compressive strength with minimum permeability reduction. This review article discusses the chemical materials used for Sand Consolidation and presents an in-depth evaluation between these materials to serve as a screening tool that can assist in the selection of chemical Sand Consolidation material, which in turn, helps optimize the Sand control performance. The review paper also highlights the progressive improvement in chemical Sand Consolidation methods, from using different types of polymers to nanoparticles utilization, as well as track the impact of the improvement in Sand Consolidation efficiency and production performance. Based on this review, the nanoparticle-related martials are highly recommended to be applied as Sand Consolidation agents, due to their ability to generate acceptable rock strength with insignificant reduction in rock permeability.
Aydin Berenjian - One of the best experts on this subject based on the ideXlab platform.
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Microbially induced calcium carbonate precipitation: a widespread phenomenon in the biological world
Applied Microbiology and Biotechnology, 2019Co-Authors: Mostafa Seifan, Aydin BerenjianAbstract:Biodeposition of minerals is a widespread phenomenon in the biological world and is mediated by bacteria, fungi, protists, and plants. Calcium carbonate is one of those minerals that naturally precipitate as a by-product of microbial metabolic activities. Over recent years, microbially induced calcium carbonate precipitation (MICP) has been proposed as a potent solution to address many environmental and engineering issues. However, for being a viable alternative to conventional techniques as well as being financially and industrially competitive, various challenges need to be overcome. In this review, the detailed metabolic pathways, including ammonification of amino acids, dissimilatory reduction of nitrate, and urea degradation (ureolysis), along with the potent bacteria and the favorable conditions for precipitation of calcium carbonate, are explained. Moreover, this review highlights the potential environmental and engineering applications of MICP, including restoration of stones and concrete, improvement of soil properties, Sand Consolidation, bioremediation of contaminants, and carbon dioxide sequestration. The key research and development questions necessary for near future large-scale applications of this innovative technology are also discussed.
Fahd Saeed Alakbari - One of the best experts on this subject based on the ideXlab platform.
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chemical Sand Consolidation from polymers to nanoparticles
Polymers, 2020Co-Authors: Fahd Saeed Alakbari, Mysara Eissa Mohyaldinn, Ali Samer Muhsan, Nurul Hasan, Tarek Alarbi Omar GanatAbstract:The chemical Sand Consolidation methods involve pumping of chemical materials, like furan resin and silicate non-polymer materials into unconsolidated Sandstone formations, in order to minimize Sand production with the fluids produced from the hydrocarbon reservoirs. The injected chemical material, predominantly polymer, bonds Sand grains together, lead to higher compressive strength of the rock. Hence, less amounts of Sand particles are entrained in the produced fluids. However, the effect of this bonding may impose a negative impact on the formation productivity due to the reduction in rock permeability. Therefore, it is always essential to select a chemical material that can provide the highest possible compressive strength with minimum permeability reduction. This review article discusses the chemical materials used for Sand Consolidation and presents an in-depth evaluation between these materials to serve as a screening tool that can assist in the selection of chemical Sand Consolidation material, which in turn, helps optimize the Sand control performance. The review paper also highlights the progressive improvement in chemical Sand Consolidation methods, from using different types of polymers to nanoparticles utilization, as well as track the impact of the improvement in Sand Consolidation efficiency and production performance. Based on this review, the nanoparticle-related martials are highly recommended to be applied as Sand Consolidation agents, due to their ability to generate acceptable rock strength with insignificant reduction in rock permeability.
Mostafa Seifan - One of the best experts on this subject based on the ideXlab platform.
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Microbially induced calcium carbonate precipitation: a widespread phenomenon in the biological world
Applied Microbiology and Biotechnology, 2019Co-Authors: Mostafa Seifan, Aydin BerenjianAbstract:Biodeposition of minerals is a widespread phenomenon in the biological world and is mediated by bacteria, fungi, protists, and plants. Calcium carbonate is one of those minerals that naturally precipitate as a by-product of microbial metabolic activities. Over recent years, microbially induced calcium carbonate precipitation (MICP) has been proposed as a potent solution to address many environmental and engineering issues. However, for being a viable alternative to conventional techniques as well as being financially and industrially competitive, various challenges need to be overcome. In this review, the detailed metabolic pathways, including ammonification of amino acids, dissimilatory reduction of nitrate, and urea degradation (ureolysis), along with the potent bacteria and the favorable conditions for precipitation of calcium carbonate, are explained. Moreover, this review highlights the potential environmental and engineering applications of MICP, including restoration of stones and concrete, improvement of soil properties, Sand Consolidation, bioremediation of contaminants, and carbon dioxide sequestration. The key research and development questions necessary for near future large-scale applications of this innovative technology are also discussed.
Mark C M Van Loosdrecht - One of the best experts on this subject based on the ideXlab platform.
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potential soil reinforcement by biological denitrification
Ecological Engineering, 2010Co-Authors: Leon A Van Paassen, Claudia M Daza, Marc Staal, D Y Sorokin, Mark C M Van LoosdrechtAbstract:Abstract Currently new ground reinforcement techniques are being developed based on microbially induced carbonate precipitation (MICP). Many studies on MICP use microbially catalyzed hydrolysis of urea to produce carbonate. In the presence of dissolved calcium this process leads to precipitation of calcium carbonate crystals, which form bridges between the Sand grains and hence increase strength and stiffness. In addition to urea hydrolysis, there are many other microbial processes which can lead to the precipitation of calcium carbonate. In this study the theoretical feasibility of these alternative MICP processes for ground reinforcement is evaluated. Evaluation factors are substrate solubility, CaCO 3 yield, reaction rate and type and amount of side-product. The most suitable candidate as alternative MICP method for Sand Consolidation turned out to be microbial denitrification of calcium nitrate, using calcium salts of fatty acids as electron donor and carbon source. This process leads to calcium carbonate precipitation, bacterial growth and production of nitrogen gas and some excess carbon dioxide. The feasibility of MICP by denitrification is tested experimentally in liquid batch culture, on agar plate and in Sand column experiments. Results of these experiments are presented and discussed.
