Uncoupled joint Inversion for Velocity and Epsilon Applied to a Prestack Depth Migration Study of the Marcellus Shale

Southwest Pennsylvania offers unique geology for the development of anisotropic models. Through a recent study, we have determined that values of epsilon, adjacent to the Marcellus shale, can approach 35%. These high values of epsilon afford us a unique opportunity to test new approaches to building anisotropic models. This study will highlight our new tools and workflow to determine velocity and epsilon thorough the deployment of an uncoupled joint tomographic inversion. This has yielded an improved anisotropic model is approximately a third of the number of iterations. We will demonstrate this approach and the resultant data.