Technical Library

Full waveform inversion (FWI) with 𝐿𝐿2norm objective function often suffers from cycle skipping that causes the solution to be trapped in a local minimum, usually far from the true model. We...

We present a newly developed 3D inversion code for Towed streamer EM data utilizing the Gauss-Newton method. The code is designed and implemented on a standard cluster of nodes to handle large-scale...

Multi-parameter Full Waveform Inversion (FWI) suffers from leakage among different medium properties. Here we discuss a practical multi-parameter FWI solution that minimizes leakage and retrieves the...

Estimating a starting velocity model for Full Waveform Inversion can be challenging. It requires several passes of migration velocity analysis to obtain a model accurate enough to prevent cycle...

We describe a special tomography workflow that has been implemented in our Yucatan Platform depth imaging 2Dproject in the Mexican GOM (MGOM). The workflow is designed for a very rugose water bottom...

Summary

Tomography driven model building workflow is currently pushing for increasingly higher resolution in the subsurface model. One key challenge in doing this is significant under-illumination in the...

In this paper we introduce a large-scale 3D inversion technique for towed streamer electromagnetic (EM) data, which incorporates seismic constraints. The inversion algorithm is based on the integral...