Subhashis Mallick

Title: Subhashis Mallick: Innovator in Seismic Data Analysis

Introduction

Subhashis Mallick is a notable inventor based in Missouri City, TX (US). He has made significant contributions to the field of seismic data analysis, holding a total of 5 patents. His work focuses on methods that enhance the understanding of shallow water flow risks, which is crucial for various applications in geophysics and engineering.

Latest Patents

One of his latest patents is a method for shallow water flow detection. This invention presents a technique for determining shallow water flow risk using seismic data. The seismic data can be processed to enhance its stratigraphic resolution by sub-sampling the seismic data to less than a two-millisecond interval. Performing a stratigraphic analysis on the seismic data and evaluating the seismic attributes can be used to select a control location. A pre-stack waveform inversion is applied to seismic data at a selected control location to provide an elastic model, which includes pressure-wave velocity and shear-wave velocity. The shallow water flow risk is then determined using the elastic model by comparing the pressure-wave velocity to the shear-wave velocity. A post-stack inversion can be applied on the seismic data using the elastic model to model a 3D volume to determine the shallow water flow risk across the 3D volume.

Another significant patent is the 3D pre-stack full waveform inversion method. This method involves generating a macro P-wave velocity model, including the resolution of residual moveout errors, using reflection tomography from a seismic data set. It also includes generating a diffraction response from the macro P-wave velocity model for a given common image gather location, converting the generated diffraction response to a migrated reflection response, and iterating the process until the modeled data set converges to the common image gathers.

Career Highlights

Throughout his career, Subhashis Mallick has worked with prominent companies in the industry, including WesternGeco LLC and Western Atlas International, Inc. His expertise in seismic data analysis has made him a valuable asset in these organizations.

Collaborations

He has collaborated with notable professionals in the field, including Ronald E. Chambers and Francis Garrou Sherrill. These collaborations have further enriched his work and contributed to advancements in seismic data methodologies.

Conclusion

Subhashis Mallick's innovative approaches to seismic data analysis have led to significant advancements in understanding shallow water