Proved to be excellent reservoirs Eocene and E.Oligocene clastics (Mahuva Early Formation) Oligocene Deposition of thicker carbonate facies over the horst blocks (Bassein, Mukta & Heera formations).
Proven hydrocarbon bearing reservoirs in Tapti area. Gradual increase of sea level, shielding from the clastic onslaught from the northern part of the basin. The intervening regressive phases have aided in developing good porosity in these rocks making them excellent reservoir levels in the basin.
Coarser clastic facies developed The clastics of Panna formation are proved within the upper marine shale to be excellent reservoirs. (Panna Formation)
5.4.3 CAP ROCKS
Main successions acting as cap are also shales deposited later in Pleistocene, also named Chinchini Shales. It is a thick shale succession that sits over other clastic and carbonate layers.
Mumbai Offshore has various tectonic settings that show a range of traps for example in Structural traps like tilted fault block type, fault closures. Fold dominated traps include anticlines and also roll over anticlines formed due to growth faulting. A large number of growth faults also have enhanced the probability of striking economic prospects, especially in the basinward direction of the zone. This study deals with the growth fault regime located within the shelf margin tectonic block of Mumbai Offshore basin
5.5 DATA INTERPRETATION
Interpretation of the study area located within the Shelf‐Margin tectonic block of Mumbai offshore was done on SMT KINGDOM on Mid Miocene and Lower Miocene level. The seismic time section of 21 lines was used to interpret these levels and prepare time structure maps and a mid‐ Miocene isochronopach. Hydrocarbon Habitat in Growth Fault Regime
Published on Jul 10, 2011
The following text is focused on the role of growth faults in trapping hydrocarbons. Various kinds of traps involving growth faults have be...