Deltaic environments and reservoir sandstones of Nam Con Son basin
Abstract
The shoreline is the transition zone that separates nonmarine processes and environments from marine processes and environments. In this zone, there are both marine and nonmarine influences. Delta is complex bodies of sediments deposited at the river mouths. Its morphology and stratigraphy are dependent on the volume of the river and its drainage area as well as on several other factors such as the sediment load of the topography, and the nature and intensity of nearshore marine processes that act to rework and disperse the sediment once it reaches the coast. Also, sediment can be supplied to the shore zone from offshore and alongshore sources, which are unrelated to a river.
Deltaic sandtones play as an important reservoir for oil and gas in many basins around the world. Four major facies and environment types were interpreted using well logs and cores data of wells CS-1X and ST-2X in the Nam Con Son basin. These facies include the delta plain, delta front, shoreface, and pro-delta.
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