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Roughness Characterization Of Rock Fracture And Its Influence On Fracture Seepage Characteristics, Lei Gan, Yu Liu, Zong-Liang Zhang, Zhen-Zhong Shen, Hong-Ying Ma
Roughness Characterization Of Rock Fracture And Its Influence On Fracture Seepage Characteristics, Lei Gan, Yu Liu, Zong-Liang Zhang, Zhen-Zhong Shen, Hong-Ying Ma
Rock and Soil Mechanics
Roughness of rock fracture has a significant influence on the seepage characteristics of fracture. The point cloud data of rock fracture surface was collected by three-dimensional (3D) optical scanning system. The joint roughness coefficient (JRC) and surface roughness ratio (Rs) were calculated by SURFER and GEOMAGIC STUDIO, and the quantitative relationship between JRC and Rs was established. The effects of JRC and Rs on the fracture seepage characteristics in limestone were investigated by conducting seepage tests under the coupling effect of stress, seepage and chemical interaction. The results show that JRC is a logarithmic function of Rs, with the R-squared …
Permeability Evolution In The Initial Period Of Oil Production Based On Field Well Test Data And Coreflooding Tests, Kozhevnikov Evgenii V., Turbakov Mikhail S., Riabokon Evgenii P., Gladkikh Evgeniy A., Poplygin Vladimir V., Guzev Mikhail A., Cheng-Zhi Qi
Permeability Evolution In The Initial Period Of Oil Production Based On Field Well Test Data And Coreflooding Tests, Kozhevnikov Evgenii V., Turbakov Mikhail S., Riabokon Evgenii P., Gladkikh Evgeniy A., Poplygin Vladimir V., Guzev Mikhail A., Cheng-Zhi Qi
Rock and Soil Mechanics
Permeability prediction during hydrocarbon production is a rather important problem. The decrease in permeability due to depletion reserves and the drop in reservoir pressure (increase in effective pressure) leads to an increase in the time of oil or gas production. A large number of works have been devoted to the problem of permeability reduction due to effective pressure. Establishment of permeability models is carried out by various methods including coreflooding tests and field well tests. The results of previous studies have shown that permeability has a power-law or exponential dependence on effective pressure, however, the difficulty in predicting permeability is …
Effect Of High Temperature On Micro-Structure And Permeability Of Granite, Shen-Yuan Deng, Qing-Hui Jiang, Kai-Wei Shang, Xiang-Yang Jing, Feng Xiong
Effect Of High Temperature On Micro-Structure And Permeability Of Granite, Shen-Yuan Deng, Qing-Hui Jiang, Kai-Wei Shang, Xiang-Yang Jing, Feng Xiong
Rock and Soil Mechanics
No abstract provided.
Evolution And Mechanism Of Permeability Of Unconsolidated Sandstone Under High Hydrostatic Pressure Compaction, Fu-Jian Yang, Da-Wei Hu, Zhen-Bao Tian, Hui Zhou, Jing-Jing Lu, Yu-Jie Luo, Shu-Qiang Gui
Evolution And Mechanism Of Permeability Of Unconsolidated Sandstone Under High Hydrostatic Pressure Compaction, Fu-Jian Yang, Da-Wei Hu, Zhen-Bao Tian, Hui Zhou, Jing-Jing Lu, Yu-Jie Luo, Shu-Qiang Gui
Rock and Soil Mechanics
The unconsolidated sandstone in hydrothermal geothermal field in Jianghan basin is taken as the research object. The hydrostatic pressure is applied to a geostress equal to 12.5 MPa. After the deformation of sample is stabilised, the evolution and mechanism of the permeability of unconsolidated sandstone under the compaction of high hydrostatic pressure are studied, which can provide some suggestions for the selection of equipment operating parameters for the tailwater recharge process in the hydrothermal geothermal field. The results indicate that under high hydrostatic pressure compaction, the permeability of unconsolidated sandstone samples tends to be a constant valued of 4.0×10?3 ?m2 …