Abstract: Based on the studies of petrology and sedimentology, the petrologic characteristics of Moogooloo reservoir are clarified through the analysis of clastic constituents, structural feature and pore types. Similarly, the sedimentary characteristics are elaborated via the research of sedimentary structure, well-logging data and grain size accumulation curve. The research results show that the lithology of the Moogooloo reservoirs in the research area is quartz sandstone and subarkose, with residual primary intergranular pores and intragranular dissolution pores. The Moogooloo Formation was deposited in middle Artinskian and the sedimentary environment was braided river accompanied with weak hydrodynamic environment. Based on the above research, the factors affecting the physical property of reservoir are analyzed from the perspectives of sedimentary process and diagenesis, while the latter one mainly includes compaction, cementation and denudation. More specifically, the sedimentary process controls the development of the primary pores and, to a great extent, the physical property of the reservoir, while the quartz overgrowth is the most significant factor which triggers the decrease in the reservoirs porosity. The systematic research of main factors of Moogooloo Formation in Southern Carnarvon Basin is helpful for the assessment and exploration of next step, while the elementary discussion of the regulation between stratigraphic sequence and physical property of reservoir exerts a positive influence on further application of stratigraphic sequence

Key words: sedimentary characteristics of reservoir, diagenesis, Moogooloo Formation, Southern Carnarvon Basin, Australia