Automated RTM-based DIT Scans for Salt Interpretation and Model Building

Reverse Time Migration (RTM) based Delayed Imaging Time (DIT) scans have been used routinely in production to update velocity models in subsalt or low signal to noise areas. Recently, this approach has been enhanced in two areas. Firstly, an automated methodology has been developed that both enhances the quality of the analysis and significantly reduces project turnaround time. Secondly, the automated method is used as an effective tool to help salt velocity model building. In this paper we first describe briefly the automated RTM-based DIT scan methodology; we then show real data examples that demonstrate the effectiveness of DIT scans for better salt model building in complex areas.