“Workshop on Computational Seismology”

Prof. Vipul Silwal

Mentor, SPG student chapter, IITR (email: vipul.silwal@es.iitr.ac.in)

Link: https://vsilwal.github.io/SPGIITR2025/index.html

A workshop was conducted by SPG IITR chapter on 12-13 April, 2025 on Computational Seismology, at the Department of Earth Sciences. This two-day workshop was intended to provide hands-on experience and theoretical knowledge in computational seismology. The primary goal was to enable attendees to understand and apply numerical techniques for seismic source inversion and 3D wavefield simulation. The inaugural ceremony was attended by Head, Prof. Sandeep Singh, Prof. Sagarika Mukhopadhyay, Prof. Simanchal Padhy, and other faculties from the department.

The Society of Petroleum Geophysicists (SPG) Ahmedabad Chapter, organized a geological field excursion to Lower Reaches of Narmada Valley near Bharuch on 8 March 2025.

A total of 40 geoscientists from IRS, SST, RFS and WLS of ONGC Ahmedabad participated in the geological field excursion. Dr. Prabhin Sukumaran, Asst. Professor, Charotar University of Science and Technology, with over 18 years of experience in studying Quaternary landforms and fluvial processes acrossIndia, guided the participants during field trip. The field trip was flagged off by ED-Chief of Institute,IRSOm Prakash Sinha on 8 March. The geological excursion aimed to give participants a first-handexposure to geomorphology and fluvial processes.

A glimpse of the participants undertaking the field trip to Narmada Valley

Fluvial systems play a crucial role in forming reservoirs. Understanding how sediments are deposited, eroded, transported and redeposited during the Geological ages is essential for predictingthe reservoir extent and facies heterogeneity while preparing the sand model. Detailed knowledge of fluvial process at different geographical and time scale helps in constructing accurate reservoir model, which are vital for effectivereservoirdevelopment and management.

The lower Narmada Valley (LrNV) is an excellent natural laboratory for studying fluvial processes. It features a variety of landforms like point bar, channel bar, palaeobanks and floodplains. The valley’s geological and geomorphological features have been extensively studied, providing a wealth of data for training and research.

The river’scourse downstream of Kevadiya, known as LrNR, is divided into three segments based on dominant sediment types: gravel, sand, and clay rich deposits of channels. Situated along the eastern margin of south Cambay Basin, the LrNV exposes a range of geological formations, including Precambrian metasedimentary rocks, Cretaceous Bagh and Lameta beds, Deccan basalts, Tertiary sediments, and Quaternary deposits. The Quaternary sediments overlie Precambrian rocks, Bagh beds, Deccan basalt, and Tertiary sediments.

Google earth map of the visited locations

General Stratigraphic Setup at Uchediya

The LrNV contains higher and lower erosional surfaces along with alluvial plains. The late Holocene floodplain is relatively flat and gently dips northward, intersected by transverse-flowing number of tributaries like Kaveri and Karjan etc. The region also features well-preserved paleo- and neo-landforms within the floodplain, which offer insights into past fluvial activities.

In the morningsession Dr. PrabhinSukumaranexplain about the fluvial depositional systems and their characteristics in detail. The spatial and temporal extent, variation in reservoir facies and its impact on porosity and permeability. After briefing session, the team moved to first point to see the palaeobanks deposits.

Briefing Session by Dr. Prabhin

Location-1 (Palaeobank section):At the first location on the southern bank of Narmada a section with Gravel bed at the bottom overlain by a 5-6mts siltstone bed devoid of any sedimentary structures are seen which has been dated as 74000years old. The gravel deposits are represented by high energy alluvial fan deposits by small tributaries flowing across the Narmada whereas massive siltstone deposits are believed to be aeolian origin.

Participants interacting with Dr.ParbhinSukumaranat Location-1 (Palaeobank Section)

It is located at southern erosional bank of Narmada near Uchediya. This is the section where 2-3mts sand is sandwiched within 3-4mts of Clay layerat top and bottom that helps the sand bed to stabilise. A representative litholog of the section is given below.

Uchediya Section Location-2

Participants at Uchediya Section site at Location-2

Later participants took a walk along the Kaveri Rivera small tributary of Narmada. Kaveri river is a perfect example of fluvial processes happening present day. Various depositional landforms such as point bar; channel bar and lateral bar are visible at smaller scale compared to Narmada. Meandering processes such as river erosion and deposition are also seen while walking through the river.It was also demonstrated that the anthropogenic action also impacted present day fluvial processes which also resulted in different geomorphological fluvial features.

Participants taking a walk along the Kaveri River at Location-3

During the break, asummary of fluvial processes was explained to participants about the visited locations,at the scale of Narmada and Kaveri River.It was emphasized that the fluvial processesmay be anything in between and beyond.It was also explained to relate it while preparing sand maps during G&G assignments. Also briefing was given about the next location to be visited.

Location-4 Post-lunch team moved to the point bar near Moti Coral village on the northern bank of Narmada. The participantstook a number of traverses along and across the point bar and observed the variation of facies along and across the point bar.

Participant walking across the point bar on the northern bank of Narmada and observing the variation in facies at Location-4

Dr. Prabhin Sukumaran SPG Ahmedabad for giving him this opportunity to lead an enthusiastic group of professionalsin the field.

The day long field excursionenhances participants’ practical knowledge of fluvial processes and their sedimentary products. Such first-hand exposure in field will add value to reservoir characterisation and reservoir model building through the integration of geological and geophysical data.

In a celebration of creativity, intellect, and profound appreciation for our natural world, our event TERRATALES 2024 encompassed a diverse array of talents and passions . Through quizzes that tested knowledge, creative writing that captured the essence of nature's beauty, photography and videography that froze moments of environmental splendor, posters that discussed scientific advancements, and debates that ignited discussions on crucial environmental issues, participants embarked on a journey of exploration and advocacy.

On May 10th 2024, Jadavpur University Student Chapter organized "TERRATALES" to commemorate World Earth Day. Under the guidance of our esteemed faculty advisor Dr Anupam Ghosh the office bearers of AAPG, SPG, SEG along with active volunteers executed the mega-event. The event encompassed a total of eight activities—four held offline and four online. 100+participants from diverse academic backgrounds came together to engage passionately in these events, demonstrating their commitment to environmental awareness and sustainability.

The submissions for online events were accepted prior to the offline event via email, which were displayed as an exhibition at the event. Through the painting competition “EARTH’S CANVAS”, artists expressed profound reflections of nature's beauty. In the creative writing competition “SYLVAN STORIES”, participants recounted personal stories illustrating their deep bond with nature. Through photography “EATHSCAPES UNVEILED” and videography “EARTHEN TALES”, participants captured the true essence and beauty of nature. The event commenced at 10 am with an engaging debate “PLANET PERSPECTIVES” on the topic "Environment pollution is excused when there is development". This was followed by a two-round quiz “TRIVIA TREK” and a two-round riddle competition “TRADE THE TRAVERSE”, where participants enthusiastically tackled challenging and interesting questions. A lunch break provided an opportunity for participants from diverse backgrounds to interact and exchange ideas. The final event featured a poster presentation “UNCHARTED TERRETORIES” , where students presented insightful and upcoming scientific topics. The event concluded with the announcement of winners and a prize distribution ceremony.

The prime objective of our event was to highlight the intersection of art, science, and activism. It illuminates the contributions of participants who, through their unique perspectives and dedication, enriched our understanding of nature and underscored the importance of its preservation. Their inspiring narratives, captivating imagery, and compelling arguments defined our celebration of nature in all its glory.

Winners of Online Events

1. Earth's Canvas (Painting Competition)

2. Earthscapes Unveiled (Photography Competition)

3. Earthen Tales (Reel - Making Competition)

4. Sylvan Stories (Creative Writing Competition)

Winners of Offline Events

5.Planet Perspectives (Debate Compitition)

6. Trivia Trek (Quiz Competition)

7. Trade The Traverse (Riddle Competition)

8. Uncharted Terretories (Poster Presentation)

Organising Comittee

Volunters List

Certificates and Prizes

Photo Gallery

Inauguration

Event Capture

Prize Distribution

On March 5, 2025, the SPG Mumbai Chapter hosted an insightful technical talk on 'Supercharging Seismic Data Processing Workflows with Deep Learning” at the WOB Conference Hall, 2nd Floor, NBP Green Heights, ONGC, Mumbai. The session was attended by esteemed dignitaries, office bearers, and SPG community members.

The session commenced with a warm welcome for distinguished individuals :

• Shri Vikas Mohan, President of SPG Mumbai Chapter & GGM-Chief Geophysical Services, ONGC, Mumbai.
• Shri Rupjit Acharjya, Vice President & HGS, ONGC, Mumbai.
• Shri Sanjay Kumar, Secretary & Head-NTA, ONGC, Mumbai.
• Dr. Bharath Shekhar, Associate Professor, IIT Bombay (Guest Speaker)

The session began with a safety briefing, ensuring a secure and comfortable environment for all attendees. This was followed by the ONGC song, with all participants standing in unity as a mark of respect.

As part of the welcoming ceremony, Shri Vikas Mohan, President of SPG Mumbai Chapter presented a sapling to Dr. Bharath Shekhar, symbolizing respect and appreciation.

Shri Vikas Mohan, Presents a Sapling to Dr. Shekhar

The SPG Mumbai Chapter introduced Dr. Bharath Shekhar, an Associate Professor at the Department of Earth Sciences, IIT Bombay. He holds an Integrated MSc in Exploration Geophysics from IIT Kharagpur and a PhD in Geophysics from the Center for Wave Phenomena, Colorado School of Mines. His expertise spans seismic imaging, ambient noise tomography, and the application of machine learning in geophysics. Dr. Shekhar is also the co- founder of Rezlytix Technologies Ltd., a company specializing in deep learning- based seismic super-resolution solutions.

Shri Vikas Mohan, President of SPG Mumbai Chapter delivered the opening remarks, emphasizing the challenges faced by traditional seismic data processing and interpretation methods in handling vast, complex datasets, reducing noise, and improving resolution to identify potential hydrocarbon reservoirs.

He highlighted the significance of integrating deep learning, particularly Convolutional Neural Networks (CNNs), into seismic imaging and interpretation. He also discussed how this technology enables faster, more accurate, and automated workflows, potentially reshaping the industry

Dr. Bharath Shekhar then delivered an insightful talk on "Supercharging Seismic Data Processing Workflows with Deep Learning.”

Shri Vikas Mohan, Delivering Opening Remarks

Dr. Bharath Shekhar delivering an insightful talk

His presentation covered :

• Advancements in seismic data processing through machine learning and deep learning techniques.
• Improved speed, accuracy, and resolution when dealing with complex seismic data.
• Novel approaches for automated stacking velocity analysis using convolutional long short- term memory (ConvLSTM) networks, which combine the feature extraction capabilities of Convolutional Neural Networks (CNNs) with the sequence modeling strengths of LSTM networks.
• The potential of deep learning technologies in optimizing workflows for geophysical exploration and enhancing seismic imaging.

The talk fostered an interactive atmosphere, with attendees engaging in active discussions and posing thought-provoking questions. Dr. Shekhar provided valuable insights into the future of seismic data processing with deep learning.

As the session concluded, Shri Vikas Mohan, President of SPG Mumbai Chapter delivered the closing remarks, expressing gratitude to Dr. Shekhar for his excellent presentation. He emphasized the importance of embracing technological advancements like deep learning to stay at the forefront of seismic data processing.

Dr. Shekar with attendees engaging in thought-provoking questions & discussions

To honor Dr. Shkhar's contribution, Shri Vikas Mohan, president SPG Mumbai Chapter presented him with a shawl and a token of appreciation. Shri Rupjit Acharjya, Vice President of SPG Mumbai Chapter, also joined the felicitation ceremony to acknowledge the speaker's expertise and contributions.

Shri Vikas Mohan and Shri Rupjit Acharjya felicitates Dr. Shekhar with a Shawl and Token of Appreciation

The event concluded with a vote of thanks by Shri Sanjay Kumar, Secretary, SPG Mumbai Chapter who expressed appreciation to the dignitaries, speaker, and participants for their active involvement and valuable contributions, making the event a resounding success.

The technical talk provided attendees with a comprehensive understanding of how deep learning is transforming seismic data processing. It offered practical insights and fostered meaningful discussions among professionals in the geophysical community.

We look forward to more such insightful events in the future!

The Society of Petroleum Geophysicists (SPG), Vadodara chapter successfully conducted one day training session on Seismic Data Acquisition & LFPS Data Acquisition for final-year M.Sc. Geology students of MSU, Vadodara. The event took place on January 24, 2025, at the Negi Bhawan Conference Hall, Geophysical Services, WON Basin, ONGC, Vadodara.

The session commenced with a welcome address by Dr. N. P. Singh, Ex-CGM (GP), he highlighted SPG's role in bridging the gap between academia and industry by providing insight knowledge into industry requirements to students. He expressed gratitude to Shri K. Baskaran, CGM-HGS and President, SPG Vadodara Chapter, for his invaluable guidance and support in organizing the event and deputing ONGC officers to share their expertise.

Shri K. Baskaran, CGM-HGS and President of the SPG Vadodara Chapter, delivering his insightful opening remarks.

In his opening remarks, Shri K. Baskaran emphasized the importance of practical training to complement theoretical studies. He encouraged students to actively engage in the session by asking questions and making the most of the learning opportunity.

To set the context, a video showcasing an overview of seismic data acquisition and the role of field parties in ONGC was presented before the training began.

The training was divided into four parts, delivered by experienced ONGC geophysicists:

• Overview of ONGC and Hydrocarbon Exploration by Dr. Chinmoy Kumbhakar, Senior Geophysicist (S) - Party Chief GP-03
• Seismic Data Acquisition - I by Shri Ravi Dwivedi, Senior Geophysicist (S) - Party Chief GP-36
• Seismic Data Acquisition - II by Shri Ashish Ranjan, Senior Geophysicist (S).
• LFPS Data Acquisition and Demonstration by Shri Abhishek Sharma, Geophysicist (S).

Class representative of students, Ms. Shubhangi Kothare shared her experiences, expressing gratitude for the insightful presentations that enhanced the students' understanding of seismic data acquisition. She also thanked Shri K. Baskaran and Dr. N. P. Singh for their efforts in organizing the event and acknowledged the presenters for their clear explanations.

The session concluded with a vote of thanks by Dr.Chinmoy Kumbhakar, he thanked Shri K. Baskaran for his leadership and Dr. N. P. Singh for his meticulous coordination in ensuring the success of the training.

This training provided valuable exposure to students about seismic data acquisition techniques, bridging the gap between academic learning and practical industry requirements. It exemplifies SPG Vadodara Chapter's commitment to fostering student-industry interaction and nurturing future geoscientists.

Group photograph featuring students alongside Shri K. Baskaran, CGM-HGS and President of the SPG Vadodara Chapter, accompanied by other esteemed officers.

Association of Petroleum Geologists (APG), India organized their 6th South Asian Geosciences Conference and Exhibition, GEOIndia 2024, from 15th to 17th November, 2024 at India Expo Mart Convention Center, in Greater Noida, with the theme “Exploring New Dimensions of Energy Dynamics”. Society of Petroleum Geophysicists (SPG), India participated in the event.

The conference was inaugurated by Shri Hardeep Singh Puri Hon’ble Minister of Petroleum and Natural Gas, Government of India. The event was graced by Shri Arun Kumar Singh, Chairman ONGC, Dr. Ranjit Rath, CMD Oil India Limited and Smt. Sushma Rawat, Director (Exploration), ONGC & Patron APG, India. GEOIndia 2024 aimed to focus on all aspects of Petroleum Geosciences and E&P thus providing a unique forum for geoscience professionals, business groups and stakeholders to discuss and comprehend the wide spectrum of issues related to India’s energy future.

Hon’ble minister Shri Hardeep Singh Puri inaugurating the event at India Expo Mart Convention Center. Right: Shri Arun Kumar Singh, CMD ONGC addressing the gathering.

Shri Praveen Mal Khanooja, Additional Secretary-MoPNG accompanied by Dr. Ranjit Rath and Smt. Sushma Rawat inaugurated variety of exhibition stalls wherein many companies from all around the globe exhibited their products & services.

Shri Praveen Mal Khanooja, Additional Secretary-MoPNG inaugurating ONGC’s pavilion. Shri Khanooja accompanied by dignitaries at Oil India Limited’s exhibition booth

SPG, as a leading organization in the field of geosciences in India, was invited to showcase its activities at the event. SPG actively participated, presenting its various initiatives and programs aimed at advancing geosciences in the country. The conference provided an excellent platform to highlight SPG India’s year-round efforts, including technical talks, field workshops, student training, the publication of research papers in its journal Geohorizons, and its flagship biennial International Conference & Exposition. SPG also highlighted the Career Symposium organized during SPG 2023 at Kochi in which many students got job offers from leading companies in the oil and gas industry. These initiatives were effectively communicated through a series of posters and videos. SPG was represented at the conference by Shri Subhash Kr. Sharma, Secretary SPG and Shri Bikash Kr. Gupta, Treasurer SPG.

The SPG booth attracted numerous dignitaries and delegates, who showed great interest in the organization's activities and initiatives. They were also eager to learn about the developments and proceedings of forthcoming SPG conference. In addition, students from various universities visited the booth, expressing curiosity about industry advancements and the pivotal role SPG plays in fostering collaborative progress in the geosciences field.

SPG representatives encouraged the visitors to pen-down their valuable feedbacks and their appreciations while also presenting them with SPG-branded memorabilia as a token of appreciation.

Geoscientists including Smt. Sushma Rawat, Director (Exploration) & Patron SPG India and Sh. Vishal Shastri, Ex-ED ONGC & President SPG India visiting SPG Booth at GEOIndia 2024

The event was a resounding success, attracting over 1,000 participants across various categories, including delegates, CE course participants, exhibitors, and students. In total, more than 200 technical papers were presented, both through oral and poster sessions.

Few snippets from the technical (poster) sessions held in GEOIndia 2024

SPG Jorhat Chapter organised a Technical talk titled“Diffraction Imaging & Fracture Characterization as an Asset Optimization Technique” under its “Technical lecture series”on 27th September 2024 at B.R Ambedkar Auditorium, ONGC Jorhat in hybrid mode. The talk was delivered by Shri Akhil Puri, Solution Consultant, M/s AspenTech Ltd.

Shri Akhil Puri has over 22 years of experience in upstream Oil & Gas industry. He possesses vast experience in seismic interpretation and reservoir characterization and specializes in new age technology solutions like interpretation of Specular & diffraction stack, advance reservoir and fracture characterization techniques.

The session commenced with the formal welcome of Shri Akhil Puri by Shri T K Mathuria, Officiating Basin Manager A&AA Basin. Shri T K Mathuria highlighted the important role played by professional societies such as SPG Jorhat chapter in dissemination of knowledge & awareness to exploration geoscientists on latest techniques and developments in the field of reservoir characterization.

During his talk Shri Puri presented the detailed Processing workflow of rich azimuth seismic data. Highlighting various case studies on the Basement Exploration techniques, Shri Puri emphasised on the immense value and information brought in by rich azimuth seismic data that is being actively harnessed especially for delineation and characterization of fractures.

Shri C.S Bahuguna, CGM (GP) - Head Geophysical Services in his concluding remarks thanked Shri Puri for his very informative presentation and for sharing his findings. He also enthused SPG-Jorhat Chapter to keep collaborating with industry as well as academia for such in-depth discussions and deliberations to enhance our understanding of geophysical techniques and their application in the field of hydrocarbon exploration. Shri, Ashutosh Verma, Secretary-SPG Jorhat Chapter presented the Vote of Thanks.

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.

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.

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.

Mr.Adrian Smith delivering his technical presentation.

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

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.

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.

SPG Chennai chapter is continuously engaged in conducting series of lectures& Webinars from National & International speakers on various topics across the disciplines to benefit its Geoscience Fraternity. The efforts of SPG Chennai chapter have significantly helped its members to get exposed to the state of the art practices in the industry and the Technological advancements in API of G&G data. In line with above, a technical webinar on “Deepwater Depositional Systems and Processes” by Shri K.Vasudevan, Ex-ED-ONGC was organized on 22nd March 2024. Shri K. Vasudevan, Former Executive Director, ONGC & Visiting professor, IIT Bombay, delivered the technical lecture in proficient manner.

Shri K. Vasudevan has 36 years of rich experience in Basin Analysis, Prospect Evaluation, Sequence Stratigraphy of Clastics & Carbonates and Advanced Reservoir Characterisation. He served at the capacity of Executive Director, Basin Manger of Western Offshore Basin,Mumbai. He has avidly contributed in Geological operations in high pressure wells of West Bengal Basin, Geological field mapping in Mizoram &Tripura fold belt, interpretation of Tripura fold belt, West Bengal Basin, A & AA fold belt, Ramnad Acreage-Cauvery Basin &Mumbai High and adjacent areas.

The webinar session was started with the welcome address by Smt. Srilata Mahapatra, GGM – Head Geophysical Services & President–SPG, Chennai Chapter, followed by opening remarks by Shri PS Rautela, CGM- Officiating Basin Manager, Cauvery Basin.

In her welcome address, Smt Srilata Mahapatra has welcomed the participants and conveyed the importance of Deep water depositionalSystems and Processes. She highlighted that this topic is much relevant for deep and ultra-deep water exploration and need of the hour as we are venturing into the deep and ultra-deep water regime. She outlined that this informative webinar will not only guide all Geoscientists but would also educate all about Deep water depositional system, environment and processes.

The focus of the talk was on understanding the Depositional Systems and Processesof sedimentation in deep and ultra-deep water. He talked about deep water sediments, products and identification in seismic. He discussed about subaqueous environments, Passive and active margins, different types of flow on deep water sedimentation, Controls of deep water sedimentation. He emphasized Sea level changes, supply of sedimentation, Earthquake and Changes in dispersal system. He explained different deep water process i.e mass transport process and relationship between depositional products, slope angles.

He also explained different slope processes i.e. rockfall, sliding and slumps. The talk presented different slope products, detailed process of debris flow, grain flow, liquefied flows and turbidity current. He emphasized about principal architectural elements i.e wedges, channels, lobes, sheets, chaotic mounds. He explained about 6 deep-water products and their visualization in seismic i.e. MTD, Channels- Channel geometry & process, Debris flow, Sediment waves, Submarine fan.

The webinar session was attended by members of SPG from across almost all the work centres of ONGC and the Geoscientists from GPS, Chennai, KG-PG Basin, Cauvery Basin are attended from 11th floor conference Hall, CMDA, ONGC. The lecture was well appreciated and praised by one and all for its contents and thoughtful discussion provided by the presenter. During the webinar session participants actively participated and in the end discussions were held wherein participants asked various thought provoking questions related to Deep water sedimentation and process.

Vote of thanks was presented by Shri Lakshman Katherla, DGM (Geophy-S), Joint Secretary, SPG-Chennai and Executive Member SPG, Shri Sukhendu Maity, Sr.Geophysicist(S) aptly compered the session.