Elastic-Waveform Inversion with Compressive Sensing for Sparse Seismic Data

Technical Report · Wed Jan 28 04:00:00 EST 2015

DOI:https://doi.org/10.2172/1168704· OSTI ID:1168704

Lin, Youzuo ^[1]; Huang, Lianjie ^[1]

---

1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Geophysics Group

Accurate velocity models of compressional- and shear-waves are essential for geothermal reservoir characterization and microseismic imaging. Elastic-waveform inversion of multi-component seismic data can provide high-resolution inversion results of subsurface geophysical properties. However, the method requires seismic data acquired using dense source and receiver arrays. In practice, seismic sources and/or geophones are often sparsely distributed on the surface and/or in a borehole, such as 3D vertical seismic profiling (VSP) surveys. We develop a novel elastic-waveform inversion method with compressive sensing for inversion of sparse seismic data. We employ an alternating-minimization algorithm to solve the optimization problem of our new waveform inversion method. We validate our new method using synthetic VSP data for a geophysical model built using geologic features found at the Raft River enhanced-geothermal-system (EGS) field. We apply our method to synthetic VSP data with a sparse source array and compare the results with those obtained with a dense source array. Our numerical results demonstrate that the velocity models produced with our new method using a sparse source array are almost as accurate as those obtained using a dense source array.

• Research Organization: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Geothermal Technologies Office (EE-4G)
• DOE Contract Number: AC52-06NA25396
• OSTI ID: 1168704
• Report Number(s): LA-UR--15-20434; SGP-TR--204
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
Planetary Sciences
compressional and shear waves
compressive sensing
elastic-waveform inversion
vertical seismic profiling