This research is focused on the analysis of the sequence stratigraphic units of F3 Block, within a wave‐dominated delta of Plio–Pleistocene age. Three wells of F3 block and a 3D seismic data, are utilized in this research. The conventional techniques of 3D seismic interpretation were utilized to mark the 11 surfaces on the seismic section. Integration of seismic sequence stratigraphic interpretation, using well logs, and subsequent 3D geostatistical modeling, using seismic data, aided to evaluate the shallow hydrocarbon traps. The resulting models were obtained using System Tract and Facies models, which were generated by using sequential stimulation method and their variograms made by spherical method, moreover, these models are validated via histograms. The CDF curve generated from upscaling of well logs using geometric method, shows a good relation with less percentage of errors (1 to 2 for Facies and 3 to 4 for System Tract models) between upscaled and raw data that complements the resulted models. These approaches help us to delineate the best possible reservoir, lateral extent of system tracts (LST and/or HST) in the respective surface, and distribution of sand and shale in the delta. The clinoform break points alteration observed on seismic sections, also validates the sequence stratigraphic interpretation. The GR log‐based Facies model and sequence stratigraphy‐based System Tract model of SU‐04‐2 showed the reservoir characteristics, presence of sand bodies and majorly LST, respectively, mainly adjacent to the main fault of the studied area. Moreover, on the seismic section, SU‐04‐2 exhibits the presence of gas pockets at the same location that also complements the generated Facies and System Tract models. The generated models can be utilized for any similar kind of study and for the further research in the F3 block reservoir characterization.
This study is based on an integrated investigation of seismic, well log, geological and geochemical data, the detailed analysis of source, reservoir, and structures were conducted in the Naccowlah Block, Eromanga Basin, Queensland, Australia. The Naccowlah Block is one of the most important hydrocarbons producing areas centered in Eromanga Basin, with several producing wells, except Ballat-01 and Chilla-01. This study pertains specifically to the Ballat structure, which was declared dry.The purpose of this research is to evaluate and identify specific 'Dry Hole' failure, based on analysis of several factors: reservoir deliverability, source maturity, migration, and structural presence. 3D seismic data revealed NE-SW trending series of reverse faulting mainly conquered by four-way dip closure due to compressional tectonics in the study area. The burial history and event chart depict the preservation and maturation of potential source rock, which is furthermore affirmed by the vitrinite reflectance curve. Interpreted regional migration model and structural analysis of Naccowlah Block stated the presence of a suitable structure for hydrocarbon generation and migration pathways. Despite all favourable aspects for the accumulation of hydrocarbon in Hutton sandstone, the structural restoration analysis proves the absence of trap at the time of migration and accumulation. However, geophysical, geological, and geochemical shreds of evidence suggest that the spatial distribution of the events provides valuable guidance for the development of the area.
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