A pre-stack basis pursuit seismic inversion

Rui Zhang, Mrinal K. Sen, Sanjay Srinivasan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Resolving thin layers and accurate delineation of layer boundaries are very important for reservoir characterization. Many seismic inversion methods based on a least-squares optimization approach with Tikhonov-type regularization can intrinsically lead to unfocused transitions between adjacent layers. A basis pursuit inversion algorithm (BPI) based on L1 norm optimization method can, however, resolve sharp boundaries between appropriate layers. Here we formulate a BPI algorithm for amplitude-versus-angle (AVA) inversion and investigate its potential to improve contrasts between layers. Like the BPI for post-stack case (Zhang and Castagna, 2011), we use an L1 norm optimization framework that estimates three reflectivities, namely, Rp, Rs and Rρ. High resolution velocities (Vp, Vs) and density (ρ) can be derived from these parameters by incorporating initial models. Tests on synthetic and field data show that the BPI algorithm can indeed detect and enhance layer boundaries by effectively removing the wavelet interference.

Original languageEnglish (US)
Title of host publicationSociety of Exploration Geophysicists International Exposition and 82nd Annual Meeting 2012, SEG 2012
PublisherSociety of Exploration Geophysicists
Pages389-393
Number of pages5
ISBN (Print)9781622769452
DOIs
StatePublished - Jan 1 2012
EventSociety of Exploration Geophysicists International Exposition and 82nd Annual Meeting 2012, SEG 2012 - Las Vegas, United States
Duration: Nov 4 2012Nov 9 2012

Publication series

NameSociety of Exploration Geophysicists International Exposition and 82nd Annual Meeting 2012, SEG 2012

Other

OtherSociety of Exploration Geophysicists International Exposition and 82nd Annual Meeting 2012, SEG 2012
CountryUnited States
CityLas Vegas
Period11/4/1211/9/12

All Science Journal Classification (ASJC) codes

  • Geophysics

Fingerprint Dive into the research topics of 'A pre-stack basis pursuit seismic inversion'. Together they form a unique fingerprint.

  • Cite this

    Zhang, R., Sen, M. K., & Srinivasan, S. (2012). A pre-stack basis pursuit seismic inversion. In Society of Exploration Geophysicists International Exposition and 82nd Annual Meeting 2012, SEG 2012 (pp. 389-393). (Society of Exploration Geophysicists International Exposition and 82nd Annual Meeting 2012, SEG 2012). Society of Exploration Geophysicists. https://doi.org/10.1190/segam2012-0374.1