Effect of thermal cycling on mechanical properties and energy evolution of sandstone
In geothermal energy exploration, the reservoir rock is always subjected to thermal cycles and its physical properties will be seriously affected. In this paper, the changes of the internal structure of the sandstone after the thermal cycle are firstly evaluated by ultrasonic tests. Then, u...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
VINCA Institute of Nuclear Sciences
2020-01-01
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| Series: | Thermal Science |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/0354-9836/2020/0354-98362006001H.pdf |
| Summary: | In geothermal energy exploration, the reservoir rock is always subjected to
thermal cycles and its physical properties will be seriously affected. In
this paper, the changes of the internal structure of the sandstone after the
thermal cycle are firstly evaluated by ultrasonic tests. Then, uniaxial
compression tests are conducted on the treated specimens. The effects of the
thermal cycling on mechanical properties and energy evolution law of the
sandstone are analyzed. The results show that the density, P-wave velocity
and mechanical properties of the sandstone reduced with the increase in the
thermal cycle, especially in the high temperature cycle. The increase of the
temperature in the thermal cycle can increase the influence of the thermal
cycle on the energy evolution law. |
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| ISSN: | 0354-9836 2334-7163 |