Statics Inversion Workflow: Updating Datum Corrections with a Tomography Solution

M.A. Alhomaili¹, R.M. Bridle¹, and A.A. Ali¹

Abstract

A number of 2D seismic lines exist in a study area of over 6000 km2 containing only one uphole. The 2D lines have been modeled by extrapolation of this very sparse uphole control, which does not adequately sample the spatially varying depth/velocity depiction of the near-surface. In 2011, more 2D seismic lines were acquired, and modeled to tie a regional multiple layer solution. Many of these lines contained a large shifts associated with additional travel time through un-sampled near-surface anomalies. A model refining step of tomographic analysis was incorporated into the near surface model definition for each 2D line.

AAPG Search and Discovery Article #90188 ©GEO-2014, 11th Middle East Geosciences Conference and Exhibition, 10-12 March 2014, Manama, Bahrain