Topic
Permeability (earth sciences)
About: Permeability (earth sciences) is a research topic. Over the lifetime, 15424 publications have been published within this topic receiving 288535 citations.
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TL;DR: In this paper, a highly plastic clay liner was compacted in the field with full-sized equipment to an average of more than 100% of standard Proctor maximum dry density.
Abstract: A highly plastic clay liner was compacted in the field with full‐sized equipment to an average of more than 100% of standard Proctor maximum dry density. The average field permeabilities of two sections of the liner, as measured with four sealed double‐ring infiltrometers and a 16×16ft(4.88×4.88m) pan lysimeter, were 3×10-5 and 10×10-5cm/s. Laboratory permeability tests were conducted on samples compacted in the laboratory by three procedures, only one of which gave a reasonable prediction of the permeability of the liner. The high permeability of the liner was caused by the failure to achieve the two “basic” compaction objectives that govern the permeability of compacted clays. The basic objectives (destruction of soil clods and bonding between lifts) and 17 other key factors that influence the permeability of compacted clays explain the performance of the liner and provide a basis for understanding how to construct liners to avoid such high permeabilities.
76 citations
TL;DR: In this paper, a discrete element model for cemented granular material is described which combines simple mechanisms of granular deformation, intergranular and intragranular microcracking, and pore channel fluid flow.
76 citations
TL;DR: In this article, a seepage-stress cross-coupling anisotropic model considering the coupled effect of the seepages and stress is described and applied to analyze the influence of the principal orientations of the joint sets on the aisotropic properties of the rock mass.
76 citations
TL;DR: In this article, the authors developed and applied an alternative approach to resolve this dilemma, which comprises flow within a nanotube capillary embedded within the shale matrix (discrete approach) and allows the evolution of shale permeability to be followed during the processes of shale gas flow.
76 citations
TL;DR: In this article, the effects of pore throat structure on gas permeability in tight sand reservoir were investigated using helium-measured porosity, pulse decay permeability, casting thin sections, scanning electron microscopy (SEM), nuclear magnetic resonance (NMR), and constant-rate mercury injection for five sandstone samples from the Upper Triassic Yanchang Formation in the Western Ordos Basin, China.
76 citations