The inorganic geochemical element tracing approach is adopted in the analysis of changing trends of the MnO content in the calcite cements of reservoirs and the systematic study of hydrocarbon migration direction in the Mosuowan-Mobei area of the Junggar Basin.The results show that the source rocks in the Well Pen-1 west sag

Changji sag

and Ddhzb sag

all have contributed to the pools in the study area

but they vary in the composition of oil

charging ranges

and intensities.Three plays are recognized in the study area

including Well Pen-1 west sag-east loop belt

Changji sag-Mosuowan uplift

and northern slope of Ddhzb sag.The southeastern flank of Musuowan uplift and the northwestern slope zone of Ddhzb sag are prospective targets for exploration.