Exploration inspiration for Chunguang oilfield in Chepaizi area,west of Junggar basin

Located in Chepaizi uplift,west of Junggar basin.Chunguang oilfield belongs to a typical lithologic reservoir accumulation type outside of the source area,which breaks the exploration strategy of looking for stratigraphic traps in slope area.Stratigraphic unconformity reservoir exploration experience in this area shows that under the background of the carboniferous tuff lithology,the weathering and leached zone is of transverse conducting ability of long distance.At the same time,the stratigraphic erosion unconformity reservoir exploration experience in the area shows the roof conditions of this kind of reservoir are not only centered on factors such as shale cap rock and cap rock thickness,and the sandstone with dense cementing or some special lithology with thinner thickness is also of sealing property.Inverted sequence distribution of reservoir physical properties is essentially resulted by mixed source of double filling,and this unique spring oilfield distribution of reservoir physical properties is helpful to look for thin oil above heavy oil.as for thin oil.it is helpful to look for heavy oil along layers.What is more,it is helpful to dig out more favorable directions.