ISC'14

June 22–26, 2014
Leipzig, Germany

Presentation Details

 
Name: Supercomputing Oil & Gas Reservoirs – Seismic Processing & Seismic Inversion
 
Time: Thursday, June 26, 2014
10:00 am - 10:30 am
 
Room:   Hall 1
CCL - Congress Center Leipzig
 
Breaks:10:30 am - 11:00 am Coffee Break
07:30 am - 10:30 am Welcome Coffee
 
Speaker:   Mauricio Araya, Shell
 
Abstract:   Seismic data are of crucial importance in the oil and gas industry. They are used in the exploration phase to find deep hydrocarbon accumulations, and during various phases of oil and gas field development planning to characterize the field before and during production. Seismic processing  turns the recorded sound wave data into 3D images of the subsurface and is computationally the most demanding step in the seismic data use value chain. In this presentation we describe, as an example, Reverse Time Migration (RTM). RTM is wave-equation based seismic processing and imaging method that was implemented at Shell with various numerical methods (finite difference and finite element), on multiple massively parallel hardware platforms (Intel Xeon, Nvidia GPUs), and under various parallel programming models (MPI, CUDA, OpenCL, OpenMP, OpenACC). We also present applications of reservoir-model based seismic inversion in hydrocarbon field development. Shell’s seismic inversion methods are probabilistic in nature and use thousands of reservoir model realizations simultaneously to extract the physical properties of the subsurface rock formations and fluids from the processed seismic data together with their uncertainties. Seismic inversion poses a very different challenge when implemented efficiently on massively parallel computers from seismic processing because its statistical, non deterministic, formulation, and the HPC optimization strategies of both will be described in some detail.