Dr. Chuck Mosher, ConocoPhillips
Fri, April 6, 2018, 4:00pm
Host: Doug Foster
Compressive sensing provides a new framework for sampling signals and wave-fields. This technology, based on non-uniform sampling, sparsity, and optimization can increase sampling efficiency by a factor of two or more in each sampling direction. Seismic data are acquired in four spatial dimensions, so the efficiency gains can approach an order of magnitude. When combined with simultaneous shooting, the gains can be even larger. We refer to our framework for utilizing compressive sensing concepts in seismic acquisition, processing, and imaging as Compressive Seismic Imaging, or CSI. ConocoPhillips has now completed three years production application of CSI to land, marine, and ocean bottom node surveys. All of these projects have achieved significant improvements in both acquisition efficiency and in data quality. Application of these concepts in pursuit of unconventional resources could make significant impact on identifying, quantifying, and developing these resources. Acquisition of high quality seismic data at reasonable costs at early stages of these projects will be key to success. Recent examples with land Vibroseis acquisition show that efficiency improvements of an order of magnitude are possible, along with clear improvements in data quality and lateral resolution.