Permeability Evolution and Particle Size Distribution of Saturated Crushed Sandstone under Compression
MetadataShow full item record
In this research, the particle size distribution and permeability of saturated crushed sandstone under variable axial stresses (0, 2, 4, 8, 12, and 16 MPa) were studied. X-ray Computed Tomography results revealed that particle crushing is likely to occur considerably as the axial stress is approaching 4 MPa, which results in the change of pore structure greatly. During compression, the particle size distribution satisfies the fractal condition well, and the fractal dimension of particle size distribution is an effective method for describing the particle crushing state of saturated crushed sandstone. When the axial stress increases from 0 MPa to 4 MPa, the fractal dimension of the particle size distribution increases rapidly by over 60% of the total increase (0–16 MPa), and the permeability decreases sharply by about 85% of the total decrease. These results indicate that 4 MPa is a key value in controlling the particle size distribution and the permeability of the saturated crushed sandstone under axial compression. The permeability is influenced by the initial gradation of the specimens, and a larger Talbot exponent corresponds to a larger permeability.
Showing items related by title, author, creator and subject.
Petrophysical and Reservoir Characteristics of Sedimentary Rocks From Offshore West Baram Delta, Sarawak Basin, MalaysiaBen-Awuah, Joel; Padmanabhan, E.; Andriamihaja, S.; Amponsah, P.; Ibrahim, Y. (2016)Sedimentary successions in the Baram Delta consist mainly of alternating sandstones and siltstones with rare intercalations of mudstones. This study examines the petrophysical variations between these Middle to Upper ...
The High Temperature Effects on Pore Size Distribution of Tight Sandstone: An Application of Microwave Heating in Enhanced Gas Recovery (EGR)Wang, H.; Rezaee, M. Reza; Saeedi, Ali (2015)The present work studied the effects of microwave heating on sandstones with low porosity and permeability based on the comparison of pore size distribution (PSD) using Nuclear Magnetic Resonance (NMR) technique. ...
Study on the effect of solid particle on water-flooding development in low permeability sandstone reservoirWu, J.; Meng, H.; Xu, J.; Xie, Sam; Shi, L. (2014)The solid particles in the injecting water directly affect injection pressure and the degree of formation damage in low permeability sandstone reservoir. The paper studied the injection of three different sizes of solid ...