Journal of Petroleum & Environmental Biotechnology

Correlation of facies distribution and sequence stratigraphic analysis of the latest Silurian to lower Devonian sequence in the eastern part of the Darling Basin, Western New South Wales Australia

World Congress on Petroleum and Refinery

July 21-22, 2016 Brisbane, Australia

Mohamed K A Khalifa and Kingsley J Mills

University of Zawia, Libya
Lithosearch Geological Consulting, Australia

Posters & Accepted Abstracts: J Pet Environ Biotechnol

Abstract:

This work presents the facies controls on the sequence stratigraphic architecture of the latest Silurian to Lower Devonian sequence corresponding to the Winduck Interval in the eastern part of the Darling Basin, Western New South Wales, Australia. The study integrates wireline logs, drill cores and limited biostratigraphic data to determine the facies subdivision that has controlled sequence stratigraphic architecture. Sedimentological analysis was applied, using characteristic wireline-log responses, and core descriptions, to aid in the development of a depositional environment for the Winduck Interval. Twenty-two sedimentary facies are defined, forming five facies associations which were grouped into seven electrofacies defined by wireline log signatures. These facies associations are characterized as distributary channel sand complexes, distributary mouth bars, tidal channel sands, proximal delta fronts associated with mouth bar complexes, and distal delta front to prodelta sediments. The sequence stratigraphy of the Winduck Interval could be subdivided into four sequences in the two available wells (DM Kewell East DDH-1 and DM Mossgiel DDH-1). Closer study of the sequence stratigraphy in the approximately 900 m thick Winduck Interval revealed ten parasequences (A-J) in progradational to retrogradational parasequence sets and four main Winduck sequences, WKS1, WKS2, WKS3 and WKS4, in ascending order. The integration of correlation techniques (log correlation, recognition of changes in core facies, electrofacies observation and parasequences) has helped to define the non-marine sequence stratigraphic model. This model of the Winduck Interval has the potential to refine existing sedimentary schemes and, given the higher resolution and more detailed correlation, may significantly improve subsurface stratigraphic reconstructions and aid in prediction of hydrocarbon-bearing reservoirs.

Biography :

Email: mohamed20au@yahoo.com