The Experts below are selected from a list of 13362 Experts worldwide ranked by ideXlab platform
Shiming Zhang - One of the best experts on this subject based on the ideXlab platform.
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A COMPREHENSIVE MODEL FOR OIL–WATER RELATIVE PERMEABILITIES IN Low-Permeability Reservoirs BY FRACTAL THEORY
Fractals, 2020Co-Authors: Shiming Zhang, Yeheng Sun, Xiaohong Wang, Yue Wang, Minglin Yang, Wei MengAbstract:Oil–water relative Permeability curve is an important parameter for analyzing the characters of oil and water seepages in Low-Permeability Reservoirs. The fluid fLow in Low-Permeability Reservoirs exhibits distinct nonlinear seepage characteristics with starting pressure gradient. However, the existing theoretical model of oil–water relative Permeability only considered few nonlinear seepage characteristics such as capillary pressure and fluid properties. Studying the influences of reservoir pore structures, capillary pressure, driving pressure and boundary layer effect on the morphology of relative Permeability curves is of great significance for understanding the seepage properties of Low-Permeability Reservoirs. Based on the fractal theory for porous media, an analytically comprehensive model for the relative permeabilities of oil and water in a Low-Permeability reservoir is established in this work. The analytical model for oil–water relative permeabilities obtained in this paper is found to be a function of water saturation, fractal dimension for pores, fractal dimension for tortuosity of capillaries, driving pressure gradient and capillary pressure between oil and water phases as well as boundary layer thickness. The present results show that the relative permeabilities of oil and water decrease with the increase of the fractal dimension for tortuosity, whereas the relative permeabilities of oil and water increase with the increase of pore fractal dimension. The nonlinear properties of Low-Permeability Reservoirs have the prominent significances on the relative Permeability of the oil phase. With the increase of the seepage resistance coefficient, the relative Permeability of oil phase decreases. The proposed theoretical model has been verified by experimental data on oil–water relative Permeability and compared with other conventional oil–water relative Permeability models. The present results verify the reliability of the oil–water relative Permeability model established in this paper.
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a comprehensive model for oil water relative permeabilities in Low Permeability Reservoirs by fractal theory
Fractals, 2020Co-Authors: Shiming Zhang, Yeheng Sun, Xiaohong Wang, Yue Wang, Minglin Yang, Wei Meng, Zhigang SunAbstract:Oil–water relative Permeability curve is an important parameter for analyzing the characters of oil and water seepages in Low-Permeability Reservoirs. The fluid fLow in Low-Permeability Reservoirs ...
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Nonlinear fLow in Low Permeability Reservoirs: Modelling and experimental verification
Advances in Geo-Energy Research, 2018Co-Authors: Fuquan Song, Shiming Zhang, Yeheng SunAbstract:The Low-Permeability Reservoirs are of heavy heterogeneity, Low Permeability, fine oil-water passages, strong resistance during fLow, and the significant interaction between solid and liquid interfaces causes the fLow of fluid in reservoir deviating from the Darcy’s law. There is no agreement on the interaction between the various factors in seepage process and the influence of seepage law. The boundary layer exists when liquid fLow in micro-tubes and nano-tubes, and the boundary layer decreases with the increase of driving force, and the maximum value of boundary layer ratio is equal to 1. Based on the capillary boundal model and the boundary layer theory, a new exponential seepage model for Low Permeability Reservoirs was proposed. Some experiments of water fLow with different pressure gradient were carried out in Low Permeability cores with Permeability of 4 to 8 milidarcy in natural rock cores from an oilfield in China, and the nonlinear model is of good agreement with the single-phase water flooding experiments of these cores. The results demonstrate that the physical meaning of each parameter of the new model is clear and it can be applied to describe the nonlinear characteristics of Low Permeability Reservoirs. The large driving force can overcome disadvantages in the developments of Low Permeability Reservoirs.
Yeheng Sun - One of the best experts on this subject based on the ideXlab platform.
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A COMPREHENSIVE MODEL FOR OIL–WATER RELATIVE PERMEABILITIES IN Low-Permeability Reservoirs BY FRACTAL THEORY
Fractals, 2020Co-Authors: Shiming Zhang, Yeheng Sun, Xiaohong Wang, Yue Wang, Minglin Yang, Wei MengAbstract:Oil–water relative Permeability curve is an important parameter for analyzing the characters of oil and water seepages in Low-Permeability Reservoirs. The fluid fLow in Low-Permeability Reservoirs exhibits distinct nonlinear seepage characteristics with starting pressure gradient. However, the existing theoretical model of oil–water relative Permeability only considered few nonlinear seepage characteristics such as capillary pressure and fluid properties. Studying the influences of reservoir pore structures, capillary pressure, driving pressure and boundary layer effect on the morphology of relative Permeability curves is of great significance for understanding the seepage properties of Low-Permeability Reservoirs. Based on the fractal theory for porous media, an analytically comprehensive model for the relative permeabilities of oil and water in a Low-Permeability reservoir is established in this work. The analytical model for oil–water relative permeabilities obtained in this paper is found to be a function of water saturation, fractal dimension for pores, fractal dimension for tortuosity of capillaries, driving pressure gradient and capillary pressure between oil and water phases as well as boundary layer thickness. The present results show that the relative permeabilities of oil and water decrease with the increase of the fractal dimension for tortuosity, whereas the relative permeabilities of oil and water increase with the increase of pore fractal dimension. The nonlinear properties of Low-Permeability Reservoirs have the prominent significances on the relative Permeability of the oil phase. With the increase of the seepage resistance coefficient, the relative Permeability of oil phase decreases. The proposed theoretical model has been verified by experimental data on oil–water relative Permeability and compared with other conventional oil–water relative Permeability models. The present results verify the reliability of the oil–water relative Permeability model established in this paper.
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a comprehensive model for oil water relative permeabilities in Low Permeability Reservoirs by fractal theory
Fractals, 2020Co-Authors: Shiming Zhang, Yeheng Sun, Xiaohong Wang, Yue Wang, Minglin Yang, Wei Meng, Zhigang SunAbstract:Oil–water relative Permeability curve is an important parameter for analyzing the characters of oil and water seepages in Low-Permeability Reservoirs. The fluid fLow in Low-Permeability Reservoirs ...
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Nonlinear fLow in Low Permeability Reservoirs: Modelling and experimental verification
Advances in Geo-Energy Research, 2018Co-Authors: Fuquan Song, Shiming Zhang, Yeheng SunAbstract:The Low-Permeability Reservoirs are of heavy heterogeneity, Low Permeability, fine oil-water passages, strong resistance during fLow, and the significant interaction between solid and liquid interfaces causes the fLow of fluid in reservoir deviating from the Darcy’s law. There is no agreement on the interaction between the various factors in seepage process and the influence of seepage law. The boundary layer exists when liquid fLow in micro-tubes and nano-tubes, and the boundary layer decreases with the increase of driving force, and the maximum value of boundary layer ratio is equal to 1. Based on the capillary boundal model and the boundary layer theory, a new exponential seepage model for Low Permeability Reservoirs was proposed. Some experiments of water fLow with different pressure gradient were carried out in Low Permeability cores with Permeability of 4 to 8 milidarcy in natural rock cores from an oilfield in China, and the nonlinear model is of good agreement with the single-phase water flooding experiments of these cores. The results demonstrate that the physical meaning of each parameter of the new model is clear and it can be applied to describe the nonlinear characteristics of Low Permeability Reservoirs. The large driving force can overcome disadvantages in the developments of Low Permeability Reservoirs.
Wei Meng - One of the best experts on this subject based on the ideXlab platform.
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A COMPREHENSIVE MODEL FOR OIL–WATER RELATIVE PERMEABILITIES IN Low-Permeability Reservoirs BY FRACTAL THEORY
Fractals, 2020Co-Authors: Shiming Zhang, Yeheng Sun, Xiaohong Wang, Yue Wang, Minglin Yang, Wei MengAbstract:Oil–water relative Permeability curve is an important parameter for analyzing the characters of oil and water seepages in Low-Permeability Reservoirs. The fluid fLow in Low-Permeability Reservoirs exhibits distinct nonlinear seepage characteristics with starting pressure gradient. However, the existing theoretical model of oil–water relative Permeability only considered few nonlinear seepage characteristics such as capillary pressure and fluid properties. Studying the influences of reservoir pore structures, capillary pressure, driving pressure and boundary layer effect on the morphology of relative Permeability curves is of great significance for understanding the seepage properties of Low-Permeability Reservoirs. Based on the fractal theory for porous media, an analytically comprehensive model for the relative permeabilities of oil and water in a Low-Permeability reservoir is established in this work. The analytical model for oil–water relative permeabilities obtained in this paper is found to be a function of water saturation, fractal dimension for pores, fractal dimension for tortuosity of capillaries, driving pressure gradient and capillary pressure between oil and water phases as well as boundary layer thickness. The present results show that the relative permeabilities of oil and water decrease with the increase of the fractal dimension for tortuosity, whereas the relative permeabilities of oil and water increase with the increase of pore fractal dimension. The nonlinear properties of Low-Permeability Reservoirs have the prominent significances on the relative Permeability of the oil phase. With the increase of the seepage resistance coefficient, the relative Permeability of oil phase decreases. The proposed theoretical model has been verified by experimental data on oil–water relative Permeability and compared with other conventional oil–water relative Permeability models. The present results verify the reliability of the oil–water relative Permeability model established in this paper.
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a comprehensive model for oil water relative permeabilities in Low Permeability Reservoirs by fractal theory
Fractals, 2020Co-Authors: Shiming Zhang, Yeheng Sun, Xiaohong Wang, Yue Wang, Minglin Yang, Wei Meng, Zhigang SunAbstract:Oil–water relative Permeability curve is an important parameter for analyzing the characters of oil and water seepages in Low-Permeability Reservoirs. The fluid fLow in Low-Permeability Reservoirs ...
Minglin Yang - One of the best experts on this subject based on the ideXlab platform.
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A COMPREHENSIVE MODEL FOR OIL–WATER RELATIVE PERMEABILITIES IN Low-Permeability Reservoirs BY FRACTAL THEORY
Fractals, 2020Co-Authors: Shiming Zhang, Yeheng Sun, Xiaohong Wang, Yue Wang, Minglin Yang, Wei MengAbstract:Oil–water relative Permeability curve is an important parameter for analyzing the characters of oil and water seepages in Low-Permeability Reservoirs. The fluid fLow in Low-Permeability Reservoirs exhibits distinct nonlinear seepage characteristics with starting pressure gradient. However, the existing theoretical model of oil–water relative Permeability only considered few nonlinear seepage characteristics such as capillary pressure and fluid properties. Studying the influences of reservoir pore structures, capillary pressure, driving pressure and boundary layer effect on the morphology of relative Permeability curves is of great significance for understanding the seepage properties of Low-Permeability Reservoirs. Based on the fractal theory for porous media, an analytically comprehensive model for the relative permeabilities of oil and water in a Low-Permeability reservoir is established in this work. The analytical model for oil–water relative permeabilities obtained in this paper is found to be a function of water saturation, fractal dimension for pores, fractal dimension for tortuosity of capillaries, driving pressure gradient and capillary pressure between oil and water phases as well as boundary layer thickness. The present results show that the relative permeabilities of oil and water decrease with the increase of the fractal dimension for tortuosity, whereas the relative permeabilities of oil and water increase with the increase of pore fractal dimension. The nonlinear properties of Low-Permeability Reservoirs have the prominent significances on the relative Permeability of the oil phase. With the increase of the seepage resistance coefficient, the relative Permeability of oil phase decreases. The proposed theoretical model has been verified by experimental data on oil–water relative Permeability and compared with other conventional oil–water relative Permeability models. The present results verify the reliability of the oil–water relative Permeability model established in this paper.
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a comprehensive model for oil water relative permeabilities in Low Permeability Reservoirs by fractal theory
Fractals, 2020Co-Authors: Shiming Zhang, Yeheng Sun, Xiaohong Wang, Yue Wang, Minglin Yang, Wei Meng, Zhigang SunAbstract:Oil–water relative Permeability curve is an important parameter for analyzing the characters of oil and water seepages in Low-Permeability Reservoirs. The fluid fLow in Low-Permeability Reservoirs ...
Yue Wang - One of the best experts on this subject based on the ideXlab platform.
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A COMPREHENSIVE MODEL FOR OIL–WATER RELATIVE PERMEABILITIES IN Low-Permeability Reservoirs BY FRACTAL THEORY
Fractals, 2020Co-Authors: Shiming Zhang, Yeheng Sun, Xiaohong Wang, Yue Wang, Minglin Yang, Wei MengAbstract:Oil–water relative Permeability curve is an important parameter for analyzing the characters of oil and water seepages in Low-Permeability Reservoirs. The fluid fLow in Low-Permeability Reservoirs exhibits distinct nonlinear seepage characteristics with starting pressure gradient. However, the existing theoretical model of oil–water relative Permeability only considered few nonlinear seepage characteristics such as capillary pressure and fluid properties. Studying the influences of reservoir pore structures, capillary pressure, driving pressure and boundary layer effect on the morphology of relative Permeability curves is of great significance for understanding the seepage properties of Low-Permeability Reservoirs. Based on the fractal theory for porous media, an analytically comprehensive model for the relative permeabilities of oil and water in a Low-Permeability reservoir is established in this work. The analytical model for oil–water relative permeabilities obtained in this paper is found to be a function of water saturation, fractal dimension for pores, fractal dimension for tortuosity of capillaries, driving pressure gradient and capillary pressure between oil and water phases as well as boundary layer thickness. The present results show that the relative permeabilities of oil and water decrease with the increase of the fractal dimension for tortuosity, whereas the relative permeabilities of oil and water increase with the increase of pore fractal dimension. The nonlinear properties of Low-Permeability Reservoirs have the prominent significances on the relative Permeability of the oil phase. With the increase of the seepage resistance coefficient, the relative Permeability of oil phase decreases. The proposed theoretical model has been verified by experimental data on oil–water relative Permeability and compared with other conventional oil–water relative Permeability models. The present results verify the reliability of the oil–water relative Permeability model established in this paper.
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a comprehensive model for oil water relative permeabilities in Low Permeability Reservoirs by fractal theory
Fractals, 2020Co-Authors: Shiming Zhang, Yeheng Sun, Xiaohong Wang, Yue Wang, Minglin Yang, Wei Meng, Zhigang SunAbstract:Oil–water relative Permeability curve is an important parameter for analyzing the characters of oil and water seepages in Low-Permeability Reservoirs. The fluid fLow in Low-Permeability Reservoirs ...
