WEB6. The compactioninduced permeability reduction of 15 to 25% porosity sandstone in the nearelastic domain seems to depend only on the increase in effective mean stress (⌬peff) and not on the stresspath coefficient K. A reduction of the (normalized) permeability of (±) is expected per unit MPa increase in peff.
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WhatsApp: +86 18203695377WEBA mathematical model for predicting porosity histories due to quartz overgrowth in quartzrich sandstone reservoirs has been developed. The model neglects secondary dissolution porosity and other diagenetic processes such as compaction and precipitation of carbonate and clay minerals. Nevertheless, the model is straightforward and easy to use to .
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WhatsApp: +86 18203695377WEBSep 18, 2008 · Significant reductions of permeability have been observed while compaction bands develop in a porous sandstone sample [Holcomb and Olsson, 2003; Vajdova et al., 2004]. [5] In many respects, the geometric attributes of discrete compaction bands as observed in the laboratory are morphologically similar to compaction bands .
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