A knowledge-sharing session by SPG-India in association with APG-India on the paramount importance of the quest for quality assurance of Pre-Stack Seismic and pitfalls

In its continued effort to provide geoscientists with a platform for knowledge sharing and to disseminate the latest technological advancements, the Society of Petroleum Geophysicists (SPG), India, in collaboration with APG-India, organized a knowledge-sharing session on 6th September 2024 at the Technical Interaction Centre (TIC), 2nd Floor, GEOPIC, ONGC Dehradun.

Mr. Adrian Smith, Chief Technical Officer at Sharp Reflections, United Kingdom, delivered a presentation on ‘Quality Assurance of Pre-Stack Seismic- Where are the pitfalls?’ With over 32 years of industry experience, Mr. Smith is a highly respected geoscientist.

knowledge-sharing session by SPG-India

Geoscientists attending the session in TIC, 2nd Floor, GEOPIC, Dehradun

The session was graced by the presence of Shri A. K. Nauriyal, GGM (Geophy-S) & Vice-President of SPG-India; Shri J. P. G. Dobriyal, GGM (Geol), HoI-GEOPIC & Secretary of APG-India; Shri Ranbir Singh, GGM (Geophy-S), Head of Processing, GEOPIC; and Shri M. K. Nath, CGM (Geophy-S), Basin Manager of Frontier Basin, along with many enthusiastic geoscientists. Shri A. K. Nauriyal, Shri J. P. G. Dobriyal, Shri Ranbir Singh, and Shri M. K. Nath extended a warm welcome to Mr. Adrian Smith by presenting him with a bouquet.

knowledge-sharing session by SPG-India

Welcome of Mr.Adrian Smith by Shri A K Nauriyal, GGM (Geophy-S) & Vice-President SPG-India; Shri J. P. G. Dobriyal, GGM(Geol)-HoI-GEOPIC & Secretary APG-India; Shri Ranbir Singh, GGM (Geophy-S) Head-Processing, GEOPIC; Shri M K Nath, CGM(Geophy-S)-Basin Manager Frontier Basin.

In his talk, Mr. Adrian Smith covered a wide range of topics, emphasizing the critical role of the quality control process in pre-stack seismic conditioning. He explained how this process ensures that, post-conditioning, the pre-stack data is free from unwanted noise, preserves coherent signals, enhances event continuity, and aligns with the expected AVO gradient. Mr. Smith highlighted several key pitfalls in pre-stack seismic quality assurance, such as inaccurate velocity models, poor signal-to-noise ratios, insufficient data coverage, improper noise filtering, incorrect processing parameters, lack of validation against well data, and misinterpretation of complex geological features. He noted that these issues can result in unreliable interpretations of subsurface structures and reservoir properties if not carefully managed throughout data acquisition and processing. Concluding the session, Mr. Smith stressed the importance of implementing rigorous quality checks at every stage—from acquisition to interpretation—integrating detailed geological information to guide the process, and regularly comparing seismic data with well logs to ensure accuracy.

knowledge-sharing session by SPG-India

Mr.Adrian Smith delivering his technical presentation.

The session was interactive and geoscientists asked several queries which were firmly addressed by Mr. Smith.

knowledge-sharing session by SPG-India

Participants interacting in a Q&A session with Mr. Adrian Smith.

Shri A. K. Nauriyal, GGM (Geophy-S) and Vice President of SPG-India; Shri J. P. G. Dobriyal, GGM (Geol), HoI-GEOPIC and Secretary of APG-India; and Shri Ranbir Singh, GGM (Geophy-S), Head of Processing at GEOPIC, honored Mr. Smith with a memento as a token of appreciation. At the close of the event, Shri Rajiv Gautam, Joint Secretary of SPG-India, delivered a vote of thanks, expressing that the talk would inspire growth, innovation, and collaboration. He also extended heartfelt gratitude to Mr. Smith on behalf of SPG-India for his time and insights. The session was coordinated and moderated by Shri Nikhil Singh, Executive Member of SPG-India.

knowledge-sharing session by SPG-India

Memento presentation to Mr.Adrian Smith by Sh. A K Nauriyal, GGM (Geophy-S), Vice President, SPG-India; Shri J. P. G. Dobriyal, GGM(Geol)-HoI-GEOPIC & Secretary APG-India; and Sh. Ranbir Singh, GGM(Geophy-S)-Head-Processing-GEOPIC.