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通过对准噶尔盆地南缘前陆斜坡带近年来发现的典型油气藏的地质特征分析,并借鉴前人的研究成果,重点针对准噶尔盆地南缘前陆斜坡带新近系沙湾组石油地质条件和勘探潜力开展了研究和探讨。得出的结论为:①滩坝相砂体沉积、不整合横向运移通道与纵向断层运移通道组合构成的“阶梯式”输导体系和油气优势运移路径,是准噶尔盆地南缘前陆斜坡带油气运聚成藏的主要控制因素;②准噶尔盆地南缘前陆斜坡带作为前陆盆地油气系统中油气运移的必经地带,具备高产、高效油气藏的地质条件,在西段已获得重要发现,目前整体上认识程度较低,是准噶尔盆地潜在的油气勘探战略目标区域;③靠近生烃凹陷的古构造脊是油气运移的优势路径,控制着油气藏的平面分布,为整个南缘前陆斜坡带的勘探提供了勘探思路。
Based on the analysis of the geological characteristics of the typical oil and gas reservoirs discovered in the foreland slope belt on the southern margin of the Junggar Basin and using the results of previous studies, the paper focuses on the petroleum geological conditions and exploration of the Neogene Shawan Formation in the foreland slope belt on the southern margin of the Junggar Basin Potential to carry out research and discussion. The conclusions are as follows: ① The “ladder” system and the dominant migration path of oil and gas, which are formed by the combination of bank and sand facies sedimentation, unconformity lateral migration and longitudinal fault migration, are the southern margin of Junggar Basin The foreland slope belt in the southern margin of Junggar Basin is the necessary zone for hydrocarbon migration in the oil and gas system of the foreland basin and has the geological conditions of high yield and high efficiency oil and gas reservoirs. The segment has gained important discoveries. At present, there is a low level of general awareness and is a potential target area for oil and gas exploration in the Junggar Basin. (3) Paleo-structural ridges near hydrocarbon-generating depressions are the dominant routes for hydrocarbon migration and control the plane distribution of oil and gas reservoirs. Which provided exploration ideas for the exploration of the foreland slope along the southern margin.