The influence of pore fluids on seismic wave velocities under high temperature and high pressure conditions: Development of a new technique with gas apparatus at AIST, Japan

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概要

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• In order to study the effects of different pore fluids on elastic-wave velocities, we developed a new system for measuring elastic wave velocities (<I>V<SUB>p</SUB></I> and <I>V<SUB>s</SUB></I> ) under high-pressure conditions up to 200 MPa and hightemperature conditions up to 200°C using a gas-medium high-pressure and high-temperature apparatus. During the <I>V<SUB>p</SUB></I> and <I>V<SUB>s</SUB></I> measurements, we can also control the pore pressures from outside the rock samples. We measured <I>V<SUB>p</SUB></I> and <I>V<SUB>s</SUB></I> of the Berea sandstone samples under three different pore-fluid conditions including dry (without porefluids), in the presence of pore water, and in the presence of pore gas. Here we describe our new measurement technique and establish the capacity of the gas apparatus and measurement technique and their potentialities for the solution of geological problems.

• 公益社団法人 日本地震学会、地球電磁気・地球惑星圏学会 、特定非営利活動法人 日本火山学会、日本測地学会、日本惑星科学会の論文

著者

• Kitamura Keigo

  Institute Of Geology And Geoinformation Geological Survey Of Japan National Institute Of Advanced In

• Takahashi Miki

  Institute For Geo-resources And Environment National Institute Of Advanced Industrial Science And Te

• Nishizawa Osamu

  Institute For Geo-resources And Environment Geological Survey Of Japan National Institute Of Advance

• Masuda Koji

  Institute For Geo-resources And Environment National Institute Of Advanced Industrial Science And Te

関連論文

• Low total and inorganic carbon contents within the Taiwan Chelungpu fault system
• A new gas-medium, high-pressure and high-temperature deformation apparatus at AIST, Japan
• The influence of pore fluids on seismic wave velocities under high temperature and high pressure conditions : Development of a new technique with gas apparatus at AIST, Japan
• The influence of pore fluids on seismic wave velocities under high temperature and high pressure conditions: Development of a new technique with gas apparatus at AIST, Japan

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