Microfacies study of the (late hautervian- early aptian)‎ succession Southern Iraq

الملخص EN

1350 representative thin sections of (Late Hautervian-Early Aptian) succession in wells (Hf-1, Hf-2, Noor-1, Am-2and Rt-3) were examined microscopically.

They revealed four patterns of facies build up represented by the following facies: lime mudstone facies buildup, lime wackestone facies build up, lime packstone-grainstone facies build up and lime grainstone facies build up.

The under studied succession have been deposited within low' energy environment with high energy intervals represented by fine sand grains deposits.

The present depositional system may reflects deepening aboard deposition toward East Amara oilfields, while toward South and South west it reflects shallowing upward succession.