@inproceedings{42c7a04e61d24551b431a9a2cd591a61,
title = "Fundamental study of flash fracturing in high temperatures controlled by depressure rate",
abstract = "Artificial cracks creation in rocks can be applied to deep geothermal drilling. Thermal stress derived from rapid decompression is considered to be effective for crack creation of rocks. In this study, rapid decompression experiments on supercritical and subcritical conditions for granite samples were conducted. Temperature drop after decompression (ΔT) is increased as temperature before decompression increases. Porosity results of supercritical decompression specimens show that rock fracturing is largely depending on decompression temperature (large ΔT). Porosity results of specimens at low temperature and high pressure condition indicates at least 100-110 °C drop after decompression is required for cracks creation.",
keywords = "Geothermal, Granite, Porosity, Rapid decompression, Supercritical, Thermal stress",
author = "Kenta Takagi and Nobuo Hirano and Noriyoshi Tsuchiya",
year = "2017",
language = "English",
series = "Transactions - Geothermal Resources Council",
publisher = "Geothermal Resources Council",
pages = "956--961",
booktitle = "Geothermal Energy",
address = "United States",
note = "Geothermal Resources Council 41st Annual Meeting - Geothermal Energy: Power To Do More, GRC 2017 ; Conference date: 01-10-2017 Through 04-10-2017",
}
