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Study area is located in Rambatan river and Ciseureh river Malahayu Brebes Central Java. Porosity and permeability are very important to oil and gas industry. Porosity is a measure of the void spaces in a rock and is a part of the total volume rock. Permeability is defined as the ability of a rock to transmit fluids. Deep-water gravity flow or deep marine reservoir are important exploration targets worldwide and there is complicated when little subsurface data available. Porosity and permeability analysis from outcrops data may considered as the data used in this study. The result from four measuring section show there is thin intercalated limy sandstone, marl, and calcareous shale. 14 outcrop samples was carried out the helium porosimetry for porosity permeability value and was examined thin section analysis for fabric discussion, and 2 samples was calcimetry analysis. Lithology are generally contains many foraminifera from very fine to fine grained and mostly moderate grained on inner-outer fan environment. Sedimentary structure represent slope sedimentary structure such as graded bedding, lower lamination, slump bedding, ripple, convolute ripple, cross lamination, and trace fossil as feature of deep-marine deposits. 8 samples from 14 samples limy sandstone are likely to be good reservoirs.

Grouping porosity permeability in deep marine sediment to analogue oil and gas reservoir: A case study Brebes Central Java