Supriya Deogharia
Gurgaon
Summary
Geophysicist with three years of experience in seismic interpretation, rock physics modeling, and seismic attribute analysis. Skilled in velocity modeling, time–depth conversion, AVO analysis, and seismic-to-well tie, with a working knowledge of Petrel, Hampson-Russell, and RokDoc. Driven to integrate geological and geophysical perspectives, while continuously advancing technical expertise.
Overview
3
3
years of professional experience
Work History
Geophysicist
Cairn Oil and Gas, Vedanta Ltd.
Gurugram
12.2022 - Current
- Currently, I am working on the geostatistical inversion of the Ravva Offshore field with global experts (external) to generate high-resolution probabilistic volumes, which will provide exploration and new infill opportunities.
- Successfully completed geostatistical inversion of Cambay offshore, in collaboration with global experts, which resulted in improving volumetrics to approximately 9 mmboe of recoverable reserves.
- QC’ed six well locations for development planning in the Nagayalanka (KG Onshore) block, integrating full-stack seismic data with inversion-derived P-impedance and Vp/Vs volumes. Generated and analyzed attribute maps to identify optimal drilling targets within the Raghavpuram Pay, and Gollapalli units.
- Delivered static model inputs by interpreting key seismic horizons, faults, and evaluated well-to-seismic ties (around 10 wells) within a designated area of the Ravva Offshore, converted inputs to depth domain, enabling more accurate static reservoir modeling.
- Generated seismic attribute maps (post-stack windowed RMS, fluid factor, and sum of negative amplitudes) to enhance facies modeling and reservoir heterogeneity assessment.
- Built a reliable velocity model for the same area, using time surfaces, well markers, and seismic interval velocity, converting time surfaces and faults to depth domain, achieving approximately a 10-12% overall reduction in depth uncertainty.
- Planned a 6-well infill campaign for Cambay offshore, using the integration of inversion volumes with angle stack seismic data, generating various post-stack windowed attributes, and structural contour maps to support well placements, reducing uncertainty, and adding a recoverable volume of around 9 mmboe of oil reserves.
- Played a key role in identifying four exploration and development opportunities in the Ravva offshore field by conducting local horizon and fault interpretation, DHI and AVO analysis, utilizing post-stack windowed and multitrace attributes to delineate the areal extent of remaining hydrocarbons and assessed volumetrics for P10, P50, and P90 cases to support risk evaluation and decision-making, resulting in unlocking a potential of around ~13 mmboe of oil.
- Conducted post-drill analysis in the Ravva and Cambay Offshore field by performing rock physics analysis, AVO modeling, and applying fluid substitution modeling (Gassmann’s equation) to evaluate the elastic properties of the reservoir (sand-shale system) and differentiate between reservoir fluids (brine, oil, and gas), justifying drilling results and enhancing confidence in reservoir characterization.
- Played a key role in JV and DGH alignment, justifying two exploration prospects from a geophysical perspective in the Ravva offshore block.
- Prepared geological prognosis reports, SORs, geophysical inputs in FDPs, cross-discipline integration, and higher technical approvals during the pre-drill stage.
Education
Master of Science - Geophysics
Indian Institute of Technology (IIT), Kharagpur
Kharagpur, WB, India05-2022
Bachelor of Science - Geology
University of Calcutta
WB, India06-2019
Skills
- AVO analysis
- Seismic attributes
- Seismic interpretation
- Rock physics
- Time to depth conversion
- Velocity model calibration
- Geostatistical inversion
Software Experience
- Petrel, Hampson-Russell (HRS), RokDoc, Seisan Explorer, Seismic Analysis Code (SAC), Generic Mapping Tools (GMT), RES2DINV X64, Linux, LaTeX (Overleaf/R Markdown)
Achievements
- Awarded the Pat on Back (POB) Award four times, and the Thanks a Barrel Award (TAB) in recognition of exceptional performance and significant impact on project outcomes
- Published a technical paper, “Reservoir Mapping and Characterization: An Integrated Approach Using Geostatistical Inversion for Untapped Reservoir Identification,” in GEOHORIZONS, a journal from the Society of Petroleum Geophysicists, India
- Honored with the Proficiency Award for Best Thesis Work, recognizing exceptional academic and research excellence in M.Sc. Geophysics, academic year 2021–2022
- Secured an All-India Rank (AIR) 133 in the Indian Institute of Technology Joint Admission Test (IITJAM) 2020
Publication
- Deogharia, S., Sengupta, M., Chatterjee, D., Reddy, K., and Jain, S (2025). Reservoir mapping and characterization: an integrated approach using geostatistical inversion for untapped reservoir identification, GeoHorizons, 30(1), 51–59.
- Deogharia, S., Kumar, A. and Singha Roy, P.N., 2022, December, Does the seismicity across the Pacific coast and the Japan Trench show any difference after a year from the Great East Japan Earthquake, AGU Fall Meeting Abstracts (Vol. 2022,pp. S21A‑04).
- Deogharia, S. And Kumar, P., 2022, December, Site response study from strong ground motion data over the Chubu region, Japan, AGU Fall Meeting Abstracts (Vol. 2022, pp. NS24A‑03).
Timeline
Geophysicist
Cairn Oil and Gas, Vedanta Ltd.
12.2022 - Current
Master of Science - Geophysics
Indian Institute of Technology (IIT), Kharagpur
Bachelor of Science - Geology
University of Calcutta