Design, implementation and application of the Marchenko Plane-wave algorithm

Abstract

The Marchenko algorithm can suppress the disturbing effects of internal multiples that are present in seismic reflection data. To achieve this, a set of coupled equations with four unknowns is solved. These coupled equations are separated into a set of two equations with two unknowns using a time window. The two unknown focusing functions can be resolved by an iterative or direct method. These focusing functions, when applied to reflection data, create virtual point-sources inside the medium. Combining individual virtual point-sources into a plane-wave leads to an efficient computation of images without internal multiples. In this study the internal multiples are eliminated in a redatuming step which is part of the imaging algorithm. To use the Marchenko algorithm with plane-wave focusing functions, the time window that separates the unknowns must be adapted. The design of the plane-wave Marchenko algorithm is explained and illustrated with numerically modeled and measured reflection data.

arXiv comment20 pages, 13 figures

References in corpus (5)

• Virtual plane-wave imaging via Marchenko redatuming
• Virtual sources and receivers in the real Earth -- considerations for practical applications
• 3D Marchenko applications: implementation and examples
• Extracting small time-lapse traveltime changes in a reservoir using primaries and internal multiples after Marchenko-based target zone isolation
• Time-lapse applications of the Marchenko method on the Troll field