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Geothermal Energy

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Fig. 7 | Geothermal Energy

Fig. 7

From: Laboratory experiments on the effects of corrosion inhibitor on the mechanical properties of reservoir rock

Fig. 7

Microstructures of samples deformed at 20 MPa confining pressure, all obtained with under cross-polarized light. a BS-09, Bentheim sandstone deformed with water. b TM4-2, Treuchtlinger Marmor limestone deformed in the presence of water. Gouge-filled localized shear-zone with boundary shear zones, about 100 µm wide. c TM2-2, Treuchtlinger Marmor limestone deformed in the presence of inhibitor 1 (3000 ppm). Incohesive sample, visible, intact, islands in main shear zones, seperated by highly localized fractures, and minimal gouge development. d TM2-3, Treuchtlinger Marmor limestone deformed in the presence of inhibitor 2 (3000 ppm). e TM2-3 shown at a greater magnification to show the fracture and damage zone

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