Ultrasonic measurements of elastic anisotropy of granitic rocks for enhanced geothermal reservoirs

• DOI: 10.1190/image2023-3917326.1
• Publication Date: 2023-12-14T15:36:35Z
• Authors: Mayra D. L. Carra...; Jake Parsons; Teng Long; Min Sun; Yingcai Zheng; De-Hua Han
• Keywords: Microseism; Overburden pressure

Knowing the intrinsic elastic anisotropy properties of reservoir rocks in enhanced geothermal systems is important stress field inversion and accurate determination induced microseismic events. Here, we perform lab experiments to measure P- S-wave velocities determine seismic using a foliated non-foliated granite rock. We both attenuations with increasing confining pressures from 5 50 MPa ultrasonic frequency bands. As pressure increases, results demonstrate significant increases P-wave velocity for granite. In case granite, by more than 22%, while 13%. Meanwhile, exhibits an increase over 18% 25% due same increment.