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Dewan, P. K.
- Godavari Delta System - A Wave-Dominated Delta System as Interpreted from Seismic Data has Hydrocarbon Potential
Authors
1 E 14/21, Vasant Vihar, New Delhi 110057, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 33, No 2 (1989), Pagination: 189-193Abstract
Modern deltas can be classified mainly into three types: fluvial dominated, wave dominated and tide-dominated delta. Geometry of shoreline and palaeoshore line, dominance of strand-plain environment and other geomorphological and sedimentological features indicate the present Godavari delta to be wave dominated delta system. Seismic reflection patterns are predominantly parallel to subparallel, indicative of delta plain environments. Progradational shingled and oblique (parallel) reflection configuration is observed in different seismic sequences. Stratigraphic hydrocarbon reservoirs can be expected in wave-dominated environment.
- Seismic Stratigraphic Modelling of Subsurface Godavari Limestone of Godavari Delta Region and Its Importance in Oil Exploration
Authors
1 E 14/21, Vasant Vihar New Delhi 110057, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 37, No 1 (1991), Pagination: 13-23Abstract
A particular limestone named Godavari Limestone is encountered in Godavari delta region of Early Eocene age. This limestone has been mapped and used as a marker horizon in seismic stratigraphic studies of the area because of its high acoustic impedance contrast with the surrounding clastics. The limestone has been interpreted to be of the platform type deposHed in a shallow marine shelf environment. Shelf edge has also been mapped which can consist of good petroliferous deposits of carbonate buildups.Keywords
Seismic Modelling, Godavari Delta, Petroleum Exploration, Eocene.- Seismic Stratigraphy of Godavari Basin Leading to a Discovery of a Carbonate Buildup, a Probable Reservoir for Oil
Authors
1 E. 14/21 Vasant Vihar, New Delhi 110057, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 34, No 4 (1989), Pagination: 351-372Abstract
The paper gives a three dimensional view of Godavari coastal basin, India, a pericratonic basin, for exploration of hydrocarbons based on seismic stratigraphic interpretation. The whole pile of sediments is divided into three seismic sequences. These seismic sequences are correlated with lithology from well data and outcrop stratigraphy.
Each seismic sequence is divided into various seismic facies based on reflection configuration, amplitude and continuity representing different environments of deposition and energy conditions. The seismic facies recognised are parallel to subparallel reflection configuration with high continuity and high amplitude, low continuity and low amplitude and low continuity and variable amplitude; divergent reflection configuration; progradational reflection configuration including oblique progradational, shingled progradational and hummocky progradational and chaotic reflection configuration.
In seismic sequence 2, patch of carbonate buildup-a probable hydrocarbon reservoir is mapped and a well location is recommended. Carbonate buildups are found to be good stratigraphic traps for oil and gas because of their good permeability and affinity to organic material. They have been reported from all over the world including Bengal basin in India.