Abstract: Luxi area of Junggar basin is rich in hydrocarbon resources, and in recent years, a series of lithologic hydrocarbon reservoirs have been found during hydrocarbon exploration of Sangonghe formation of Jurassic in Xiayan nose structural belt, which reveals great prospects in shallow layers. In this paper, technologies including sedimentary reservoir geological modeling, seismic attribute prediction, wave impedance inversion and data object visualization analysis are adopted to synthetically identify five lithologic traps, such as northern Well Madong-2 trap, Wellblock Madong-3 trap, eastern Well Madong-3 trap, southern Well Xiayan-6 trap and southern Well Xiayan-3 trap. The total area of these traps is 361.7 km2, the deepness of highs ranges from 2 150 m to 2 270 m, and the largest closure in eastern Well Madong-3 trap reaches 460 m. The synthetical analysis indicates that the lithologic traps are developed in Xiayan nose structural belt, and the geological conditions are favorable for forming lithologic hydrocarbon reservoirs.

Key words: Junggar basin, Luxi area, Xiayan nose structural belt, Jurassic, Sangonghe formation, lithologic trap