E Stuart Nelan

Title: E Stuart Nelan: Innovator in Seismic Survey Technology

Introduction

E Stuart Nelan is a notable inventor based in Dallas, TX, who has made significant contributions to the field of seismic survey technology. With a total of three patents to his name, Nelan's work focuses on improving the accuracy and efficiency of seismic data processing.

Latest Patents

Nelan's latest patents include a method and system for correcting for offset-dependent directivity. This invention provides a method and computer system for correcting seismic signals in a seismic survey, which are sensed in both horizontal and vertical directions at receiver locations. The disclosed method processes horizontal and vertical seismic signal traces in prestack gathers after normal move-out correction. It evaluates a performance function over a range of zero-offset directivity and directivity slope values, using the horizontal and vertical pressure wave components sensed at the receivers. The values that yield the maximum performance function are stored, allowing for corrections to be made to the traces, thereby minimizing the transverse component of the sensed pressure wave.

Another significant patent by Nelan is a method and system for applying dispersive normal moveout corrections. This invention derives and applies normal moveout phase and time shift corrections to seismic survey traces. The method involves applying normal moveout time-shift corrections based on stacking velocity analysis and selecting a reference offset for phase-shifting the traces. Semblance analysis is performed to identify the optimum reference phase dispersion value, which is then applied to the traces in the gather.

Career Highlights

E Stuart Nelan is currently associated with Atlantic Richfield Company, where he continues to innovate in the field of seismic technology. His work has been instrumental in enhancing the methodologies used in seismic surveys, contributing to more accurate data interpretation.

Collaborations

Nelan has collaborated with notable colleagues such as Bok S Byun and David D Thompson, further enriching his contributions to the field through teamwork and shared expertise.

Conclusion

E Stuart Nelan's innovative patents and contributions to seismic survey technology highlight his role as a key figure in the industry. His work not only advances the field but also sets a foundation for future developments in seismic data processing.