Seismo-Acoustic Signature Analysis of Temperature and Pressure - PowerPoint PPT Presentation

Seismo-Acoustic Signature Analysis of Temperature and Pressure Dependent Porous Rocks M. S. JAYA, R. CIZ, S. SHAPIRO, FU Berlin, Germany D. BRUHN, H. MILSCH, GFZ Potsdam, Germany Ó. FLÓVENZ, L. H. KRISTINSDÓTTIR, ÍSOR, Iceland

Pressure Dependency & Seismo-Acoustic Signatures • The Stress sensitivity theory (Shapiro and Kaselow, 2005) describes the seismo-acoustic signature of pressure dependent rocks: V(P) = A + KP – B exp(-PD) A � the influence of lithology Ref.: Shapiro and Kaselow, K � the influence of the stiff pores Geophysics, 70/5 (2005), N27-N38 B and D � the influence of compliant pores • The seismo-acoustic signatures can help establishing a remote prediction of a pressure driven phenomenon, such as abnormal geo-pressure (over-pressure). • The seismo-acoustic signature of Ref.: Ciz et al., APPEA Journal , 2005, 449-457 temperature dependent rocks? ENGI NE Workshop, Seismo-Acoustic Signatures, 2 April 2007 2

Seismo-Acoustic Signature Analysis (1) ENGI NE Workshop, Seismo-Acoustic Signatures, 2 April 2007 3

Seismo-Acoustic Signature Analysis (2) ENGI NE Workshop, Seismo-Acoustic Signatures, 2 April 2007 4

Seismo-Acoustic Signature Analysis (3) Sample 58 Sample 3A ENGI NE Workshop, Seismo-Acoustic Signatures, 2 April 2007 5