نتایج جستجو برای: permeability coefficient

تعداد نتایج: 217403  

2012
Wang Jing

The Lorenz curve is used to estimate the heterogeneity of an oil reservoir. The corresponding permeability distributions in a series of concept reservoir models with a uniform average permeability but different heterogeneities are obtained and characterized by inverse calculation of the Lorenz curve. Then the development laws of a reservoir in relation to its heterogeneity are studied in method...

2015
Peng Zhu Chengyan Lin Peng Wu Ruifeng Fan Hualian Zhang Wei Pu

By analyzing the permeability controlling factors of tight sandstone reservoir in Wuhaozhuang Oil Field, the permeability is considered to be mainly controlled by porosity, clay content, irreducible water saturation and diagenetic coefficient. Because the conventional BP algorithm has its drawbacks such as slow convergence speed and easy falling into the local minimum value, an improved three-l...

Journal: :IOP Conference Series: Earth and Environmental Science 2020

Journal: :IOP Conference Series: Earth and Environmental Science 2017

Journal: :Journal of The Textile Institute 2021

This study presents a computational model for investigation of the air permeability coefficient and water-vapor resistance through 3D textile layer. The effective values coefficients are highly dependent on volumetric internal structure water vapor flow has been performed microscale finite element representative volume layer by taking into account real configuration yarns filaments. were obtain...

2015
Jie Peng Xiang He Hanming Ye João Miguel Dias

The vacuum preloading is an effective method which is widely used in ground treatment. In consolidation analysis, the soil around prefabricated vertical drain (PVD) is traditionally divided into smear zone and undisturbed zone, both with constant permeability. In reality, the permeability of soil changes continuously within the smear zone. In this study, the horizontal permeability coefficient ...

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