Late Diagenetic Solution Seams and Flaser Structures in the Carbonate Reservoir Rocks of Bombay Offshore, India

Solution or flaser seams are of common occurrence in many producing carbonate reservoir rocks of Bombay Offshore, India. The flasers are simple or composite and characterise many poorly to semi-Iithified Iimemuds. The flasers are wavy, undulating, horizontal, inclined or vertical lines, random whisps, horse tails, branching and combining, combining with groups of simple seams enveloping limemud lenses and nodules. Lithological and petrographic evidence suggest that the flasers are of late diagenetic compactional solution origin. Closely spaced flasers may have contributed considerably to the permeability of the reservior rocks and thus facilitated good production obtained from many Bombay offshore wells.