Target-oriented Time-lapse Waveform Inversion using Virtual Survey

TL;DR: In this paper, a 3D elastic full waveform inversion for time-lapse seismic data using a finite-difference injection method is presented, where the wavefield is computed in the whole model and is stored on a surface above a finite volume where the model is perturbed and localized inversion is performed.

TL;DR: In this article, a target-oriented full-waveform inversion (FWI) method is proposed for high-resolution imaging of subsurface targets at depth, which is based on the convolution-type representation theorem.

TL;DR: In this article, an efficient target-oriented inversion scheme for time-lapse seismic data using an integral equation formulation with Gaussian beam based Green's function approach is presented.

TL;DR: Target-oriented inversion (TOI) as mentioned in this paper is an approach aimed at enhancing the ability of full-waveform inversion to achieve a high-resolution delineation of a reservoir.

TL;DR: This review attempts to illuminate the state of the art of FWI by building accurate starting models with automatic procedures and/or recording low frequencies, and improving computational efficiency by data-compression techniquestomake3DelasticFWIfeasible.

TL;DR: The craft of wavefield extrapolation Some frontiers as discussed by the authors have been frontiers in the field of wave field imaging, and they have been explored in time and space, as well.

TL;DR: In this article, the authors show that the cost of FWI for fixed-spread data can be significantly reduced by applying it to data formed by encoding and summing data from individual sources.

TL;DR: The use of 4-D seismic has grown exponentially over the past decade and is expected to continue to do so as mentioned in this paper, and there are currently about 75 active projects worldwide, and more than 100 cumulative projects.