Summary Changes in rock properties, fluid content and their combination can be related to multiple seismic and EM anomalies. Rock physics models are commonly used to better understand the underlying physics of observed log responses and how they are governed by local petrophysical properties (Smith, 2011). In this study from the Gulf of Mexico, we present a case that shows a strong EM anomaly that can be tied to the rock properties at the wellbore location by generating 1D CSEM models. This multi-physics approach addresses the importance of understanding of rock physics fundamentals and their integration with other technologies, such as seismic and EM. Introduction This feasibility study aims to understand the impact of elastic and electric reservoir properties using the discovery well as the calibration well for such anomaly response in a Miocene reservoir.
Barnes, Simon (PGS) | van Borselen, Roald (PGS) | Salazar, Humberto (Pemex Exploration and Production) | Vàzquez, Alfredo (Pemex Exploration and Production) | Ronzón, Israel (Pemex Exploration and Production) | Martinez, Ruben (PGS)
A processing strategy for the 3D prediction and subsequent elimination of long period surface-related multiples (SRME) contaminating a 3D sparse non-orthogonal land seismic data is presented. A comparison is made between 1D and 3D multiple prediction using the Surface-related Multiple Elimination (SRME) method, showing that significant improvements can be obtained by taking into account the full 3D complexity of the subsurface. Multidimensional Fourier regularization has been proven to be a critical component of the pre-conditioning of the data applied prior to the multiple prediction and subtraction.