MMIJ Annual Meeting 2020
Mar 15 - Mar 17, 2020Chiba Institute of Technology
MMIJ Annual Meeting 2020
Mar 15 - Mar 17, 2020Chiba Institute of Technology
[1K62507-18-01]The feasibility test of shear wave anisotropic parameter estimation with virtual cross-dipole data calculated by Seismic Interferometry in onshore data set
○Yusuke Watanabe1, Hitoshi Mikada1, Junichi Takekawa1, Srichand Prajapati2(1. Kyoto University, 2. Universiti Teknologi PETRONAS)
Keywords:
Seismic Interferometry,Shear wave anisotropy,Cross-dipole survey
In this study we would like to demonstrate the feasibility test of shear wave survey in onshore case using virtual cross-dipole data. The virtual cross-dipole data is generated by utilizing seismic interferometry to horizontal components of seismic records received with two different receivers.
In our theory in order to generate the virtual cross-dipole data the source could be monopole source and we don’t need shear wave source, which is high cost seismic source.
For feasibility test of our methodology we firstly conduct the simple numerical test with single anisotropic target and single survey line of 3 components of geophones. With these virtual cross-dipole data we estimate the anisotropic parameter in the target layer.
Adding to it we conducted a simple feasibility test with 2D 3 components onshore data, Canadian Blackfoot.
Each test shows the reasonable estimation accuracy, and we conclude that our methodology has possibility of anisotropic parameter estimation in broad area with relatively easy way of shear wave survey.
In our theory in order to generate the virtual cross-dipole data the source could be monopole source and we don’t need shear wave source, which is high cost seismic source.
For feasibility test of our methodology we firstly conduct the simple numerical test with single anisotropic target and single survey line of 3 components of geophones. With these virtual cross-dipole data we estimate the anisotropic parameter in the target layer.
Adding to it we conducted a simple feasibility test with 2D 3 components onshore data, Canadian Blackfoot.
Each test shows the reasonable estimation accuracy, and we conclude that our methodology has possibility of anisotropic parameter estimation in broad area with relatively easy way of shear wave survey.