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

2 ENGI NE Workshop, Seismo-Acoustic Signatures, 2 April 2007

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 K the influence of the stiff pores B and D the influence of compliant pores

• The seismo-acoustic signatures can

help establishing a remote prediction

• f a pressure driven phenomenon,

such as abnormal geo-pressure (over-pressure).

• The seismo-acoustic signature of

temperature dependent rocks?

Ref.: Ciz et al., APPEA Journal, 2005, 449-457 Ref.: Shapiro and Kaselow, Geophysics, 70/5 (2005), N27-N38

3 ENGI NE Workshop, Seismo-Acoustic Signatures, 2 April 2007

Seismo-Acoustic Signature Analysis (1)

4 ENGI NE Workshop, Seismo-Acoustic Signatures, 2 April 2007

Seismo-Acoustic Signature Analysis (2)

5 ENGI NE Workshop, Seismo-Acoustic Signatures, 2 April 2007

Seismo-Acoustic Signature Analysis (3)

Sample 58 Sample 3A