Subsalt Marchenko imaging: A Gulf of Mexico example

Abstract

We apply Marchenko imaging to field data for subsalt structures in the Gulf of Mexico, with emphasis on its e ectiveness in eliminating the artifacts caused by internal multiples. We demonstrate a theoretical and practical frame work of the Marchenko method for producing a target-oriented subsalt image using marine towed-streamer data, along with a work flow for data preparation and processing. The subsalt image we produced using Marchenko imaging is consistent and comparable, for the most part, with the image produced using Reverse Time Migration (RTM). Significantly, compared to the RTM image, the Marchenko image: 1) shows better continuity and coherence of the subsalt reflectors; 2) improves the clarity and comprehensibility of the sedimentary layers near the salt body; and 3) reveals more structural features below the edge of the salt body. Presentation Date: Monday, September 25, 2017 Start Time: 3:30 PM Location: Exhibit Hall C/D Presentation Type: POSTER