Cement Deposits in Opening-Mode Fractures in Sandstone: Implications for Size, Spacing, Connectivity, and Erosion
Stephen Laubach
Abstract:In the case of opening-mode fractures in sandstone that formed or resided at depth in diagenetic conditions (ca. 50 to 200 ℃) a chemical perspective helps guide characterization of open fracture size, spatial arraignment, and connectivity. Partial quartz fill and microfractures create weakness susceptible to reactivation and may impart strength anisotropy. Studies that account for both chemical and mechanical processes have great potential to solve challenging practical problems in subsurface science and to he… Show more
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