Since the pioneering work of Nemeth et al. (1999) two decades ago, least-squares migration (LSM) has come a long way, emerging as the next key advancement in seismic imaging. Some of the leading oil and gas service companies now offer LSM as amplitude-compliant and illumination/fold-compensated imaging deliverables. LSM and full-waveform inversion (FWI) are two closely related, rapidly evolving, and highly promising technologies in the exploration industry. Of these two technologies, the objective of FWI is to reconstruct both long- and short-wavelength components of the velocity model by matching synthetic seismograms to measured seismograms. In contrast, LSM assumes that an accurate...
Introduction to special section: Least-squares migration
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Aimee Mao, Gerard Schuster, Kurt Marfurt, Yonghe Sun, Chong Zeng, Bin Wang, Bertrand Duquet, Paul Singer, Wei Dai, Gaurav Dutta, Jerry Young, Yu Zhang, Michael Kiehn; Introduction to special section: Least-squares migration. Interpretation ; 5 (3): SNi–SNii. doi: https://doi.org/10.1190/INT-2017-0613-SPSEINTRO.1
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