GEOLOGICAL AND HYDROCARBON PROSPECT OF KRISHNA GODAVARI BASIN
RASH BIHARI LAL
Name of Topics
Page No. 1. Introduction 1 2. TYPES OF SEDIMEMTARY BASIN 2 3. Krishna-Godavari Basin 6 4. Geological Settling 10 5. Stratigraphy of Krishna-Godavari Basin 15 6. Depositional System 20 7. Production in Krishna-Godavari Basin 30 8. Origin of Biogenic gases in Krishna-Godavari 33 9. Controversies 34 10. Conclusion 35 11. References 37 List of Table and Figures
Name of Table or figure no. Page no. 1. Different field of Krishna Godavari(Table) 26 2. Figure 1 5 3. Figure 2 7 4. Figure 3 13 5. Figure 4 14 6. Figure 5 17 7. Figure 6 19 8. Figure 7 24 9. Figure 8 24 10. Figure 9 25 11. Figure 10 25 12. Figure 10 25
Sedimentary basins are regions of the earth of long term subsidence creating accommodation space for infilling by sediments. The subsidence results from the thinning of underlying crust, sedimentary, volcanic, and tectonic loading, and changes in the thickness or density of adjacent lithosphere. Sedimentary basins occur in diverse geological settings usually associated with plate tectonics activity. Sedimentary basins are in broad sense, all those areas in which sediments can accumulate to considerable thickness and be preserved for long geological time period. The sedimentary basins of India received attention of geoscientists due to increased activity of petroleum exploration in 1950’s. Oil exploration in India dates over a century back when drilling of first well begun in 1866 just seven years after the first oil well was drilled in Pennsylvania, USA by Col. Drake (1859). There are 26 basins in India covering an area of about 3.14 million sq. km, of which 13 are of interest for hydrocarbon exploration based on current status of exploration, knowledge and commercial status. The sedimentary basins of India, on land and offshore up to the 200m isobath, have an aerial extent of about 1.79 million sq. km and in the deep waters beyond the 200m isobath the sedimentary area has been estimated to be about 1.35 million sq. km. In India hydrocarbon has been struck in different basins ranging in age throughout the Phanerozoic.
TYPES OF SEDIMEMTARY BASINS
On the basis of prospectivity Indian basins have been broadly classified into four categories which accommodate in...
References: Basin Architecture
Based on Bouguer gravity data, Murty and Ramakrishna (1980) have identiﬁed three sub basins separated by two basement horsts
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