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准噶尔盆地西北缘上二叠统、下三叠统是重要的产油层系，储集层沉积相以冲积扇为主。冲积扇与油气的关系有“一扇一藏”之说，因此，预测冲积扇的分布很有意义。该区冲积扇可划分为断崖扇与坡积扇两大类。针对其特点，近年来形成了一套以传统地震地层学为指导的冲积扇预测方法，开展了断裂线和地层尖灭线展布、地震相分析、层速度分析、属性定量分析、井约束反演与解释等研究，并取得了非常显著的效果。先后发现并查明了６个冲积扇的规模及相带展布，提供评价井位１０口，地质预测符合率达９１８％，目前已有７口评价井获工业油流。
The Upper Permian and Lower Triassic systems in the northwestern margin of Junggar Basin are important oil-bearing formations, and the sedimentary facies of the reservoirs are dominated by alluvial fans. The relationship between alluvial fan and oil and gas is “one by one”, so it is meaningful to predict the distribution of alluvial fan. The alluvial fan in this area can be divided into two types: the cliff fan and the slope fan. In response to its characteristics, a set of alluvial fan prediction methods based on traditional seismic stratigraphy have been formed in recent years. The distribution of pinch line and fault line, seismic facies analysis, layer velocity analysis, attribute quantitative analysis and well constrained inversion Performance and interpretation of other studies, and achieved very significant results. Six alluvial fans have been discovered and identified in scale and facies belt distribution. Ten wells for evaluation are provided, and the geological prediction coincidence rate reaches 91.8%. At present, seven evaluation wells have obtained industrial oil flow.