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Fig. 12 | Geothermal Energy

Fig. 12

From: Pore-fluid-dependent controls of matrix and bulk thermal conductivity of mineralogically heterogeneous sandstones

Fig. 12

Cross-plots of bulk thermal conductivity (λb) versus the product of the ratio of quartz volume fraction (vquartz)/Φ and vp for a air-saturated sandstone samples, b water-saturated sandstone samples. In case of air-saturated samples, the optimum correlation R2 = 0.85 is achieved for plots bulk thermal conductivity (λb) versus the product of the ratio of quartz volume fraction (vquartz)/Φ and vp. λb and vp are measured parallel bedding

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