Seismic and Petrophysical Relationships from UK Continental Shelf Rocks at Elevated Pressures
作者:
Solomon Assefa,
CliveMc Cann,
Jeremy Sothcott,
期刊:
Marine Georesources & Geotechnology
(Taylor Available online 2000)
卷期:
Volume 18,
issue 2
页码: 119-140
ISSN:1064-119X
年代: 2000
DOI:10.1080/10641190009353784
出版商: Taylor & Francis Group
关键词: seismic properties;pressure;petrophysical properties;continental shelf rocks;seafloor acoustics
数据来源: Taylor
摘要:
There are few published seismic (P- and S-waves) properties for seafloor bedrocks. At low pressures (1 to 10 MPa), velocities and attenuations are determined mainly by open microcracks. At higher pressures, the microcracks close, and the velocities and attenuations depend primarily on the matrix porosity. We have investigated both the relationships between the acoustic, petrophysical, and geological properties of the rocks at 40 MPa pressure and the effect of microcracks on the acoustic properties at 10 MPa pressure. In this paper we discuss the former; the latter will be discussed separately.
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