Parasequence Geometry as a Control on Permeability Evolution

1993 ◽  
pp. 493-514 ◽  
Keyword(s):  
Permeability Evolution

scholarly journals Coupled Effects of Stress, Moisture Content and Gas Pressure on the Permeability Evolution of Coal Samples: A Case Study of the Coking Coal Resourced from Tunlan Coalmine

Water ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 1653
Author(s):  
Guofu Li ◽  
Yi Wang ◽  
Junhui Wang ◽  
Hongwei Zhang ◽  
Wenbin Shen ◽  
...  
Keyword(s):  
Moisture Content ◽  
Coalbed Methane ◽  
Gas Permeability ◽  
Axial Stress ◽  
Gas Pressure ◽  
Pressure Curve ◽  
Permeability Evolution ◽  
Confining Stress ◽  
Qinshui Basin ◽  
Gas Seepage

Deep coalbed methane (CBM) is widely distributed in China and is mainly commercially exploited in the Qinshui basin. The in situ stress and moisture content are key factors affecting the permeability of CH4-containing coal samples. Therefore, considering the coupled effects of compressing and infiltrating on the gas permeability of coal could be more accurate to reveal the CH4 gas seepage characteristics in CBM reservoirs. In this study, coal samples sourced from Tunlan coalmine were employed to conduct the triaxial loading and gas seepage tests. Several findings were concluded: (1) In this triaxial test, the effect of confining stress on the permeability of gas-containing coal samples is greater than that of axial stress. (2) The permeability versus gas pressure curve of coal presents a ‘V’ shape evolution trend, in which the minimum gas permeability was obtained at a gas pressure of 1.1MPa. (3) The gas permeability of coal samples decreased exponentially with increasing moisture content. Specifically, as the moisture content increasing from 0.18% to 3.15%, the gas permeability decreased by about 70%. These results are expected to provide a foundation for the efficient exploitation of CBM in Qinshui basin.

Mining‐disturbed coal damage and permeability evolution: Model and validation

2021 ◽  
Author(s):  
Chao Xu ◽  
Mingyue Cao ◽  
Kai Wang ◽  
Qiang Fu ◽  
Liangliang Qin
Keyword(s):  
Evolution Model ◽  
Permeability Evolution ◽  
Coal Damage

scholarly journals A permeability evolution model of coal particle from the perspective of adsorption deformation

2021 ◽  
Vol 9 (4) ◽  
pp. 577-587
Author(s):  
Wei Liu ◽  
Deyao Wu ◽  
Hao Xu ◽  
Xiangyu Chu ◽  
Wei Zhao ◽  
...  
Keyword(s):  
Coal Particle ◽  
Evolution Model ◽  
Permeability Evolution ◽  
Adsorption Deformation

Earth's energy “Golden Zone”: a synthesis from mineralogical research

Clay Minerals ◽  
2011 ◽  
Vol 46 (1) ◽  
pp. 1-24 ◽  
Author(s):  
P. H. Nadeau
Keyword(s):  
Oil And Gas ◽  
Gulf Coast ◽  
Clay Mineralogy ◽  
Sedimentary Basins ◽  
Entrapment Efficiency ◽  
Permeability Evolution ◽  
Reservoir Temperature ◽  
Fundamental Particle ◽  
Geological Processes ◽  
The Impact

AbstractThe impact of diagenetic processes on petroleum entrapment and recovery efficiency has focused the vast majority of the world's conventional oil and gas resources into relatively narrow thermal intervals, which we call Earth's energy “Golden Zone”. Two key mineralogical research breakthroughs, mainly from the North Sea, underpinned this discovery. The first is the fundamental particle theory of clay mineralogy, which showed the importance of dissolution/precipitation mechanisms in the formation of diagenetic illitic clays with increasing depth and temperature. The second is the surface area precipitation-rate-controlled models for the formation of diagenetic cements, primarily quartz, in reservoirs. Understanding the impacts of these geological processes on permeability evolution, porosity loss, overpressure development, and fluid migration in the subsurface, lead to the realization that exploration and production risks are exponential functions of reservoir temperature. Global compilations of oil/gas reserves relative to reservoir temperature, including the US Gulf Coast, have verified the “Golden Zone” concept, as well as stimulated further research to determine in greater detail the geological/mineralogical controls on petroleum migration and entrapment efficiency within the Earth's sedimentary basins.

scholarly journals Permeability evolution during fluid-pressure induced shear slip in saw-cut and natural granite fractures

2020 ◽  
Author(s):  
Zhiqiang Li ◽  
Xiaodong Ma ◽  
Xiang-Zhao Kong ◽  
Martin O Saar ◽  
Daniel Vogler
Keyword(s):  
Fluid Pressure ◽  
Permeability Evolution ◽  
Shear Slip

scholarly journals Effect of Fault Architecture and Permeability Evolution on Response to Fluid Injection

2018 ◽  
Vol 123 (11) ◽  
pp. 9982-9997 ◽  
Author(s):  
Alissar Yehya ◽  
Zhuo Yang ◽  
James R. Rice
Keyword(s):  
Fluid Injection ◽  
Permeability Evolution ◽  
Fault Architecture
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