Скорости акустических волн в породах-коллекторах различной пористости, проницаемости и степени водонасыщения

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Авторы: Голиков Н.А.   (ИНГГ СО РАН)   Машинский Э.И.   (ИНГГ СО РАН)  
дата публикации: 2012
Experiments on studying the dependence of longitudinal and share wave velocities (Vp and Vs respectively) on water saturation (Sw) have been conducted in sandstone samples of different porosity and permeability. The experiments have been carried out with the help of a pulse wave generation with the frequency of about 400 kHz at the effective pressure of 24 MPa and ambient temperature. The first group sandstones have shown dependences Vp(Sw) and Vs(Sw) close to linear ones. The dependence of Vp has been growing substantially (up to 17%) with Sw, whereas the dependence of Vs could have either grown or lowered. In the second group sandstones, the dependences Vp(Sw) have been non-linear. Velocity Vs has been declining linearly with Sw. Lowering Vp and Vs with increasing permeability and porosity have been shown. The results can be used in interpretation of seismic and sonic data.
первоисточник: Каротажник
том: 3
страницы: 100-110
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