准噶尔盆地南缘前陆斜坡区新近系沙湾组油气成藏特征  

Shawan Formation in Foreland Slope Area, Southern Margin of Junggar Basin

作　　者：关键[1] 贾春明[1] 支东明[2] 姚卫江[1] 党玉芳[1] 熊婷[1] 

机构地区：[1]中国石油新疆油田分公司勘探开发研究院地球物理研究所,新疆乌鲁木齐830013 [2]中国石油新疆油田分公司,新疆克拉玛依834000

出　　处：《新疆地质》2015年第3期378-381,共4页Xinjiang Geology

摘　　要：准噶尔盆地南缘前陆斜坡区新近系沙湾组是寻找优质、高效石油地质储量的有利目的层。通过对已发现的沙湾组油藏特征和成藏规律分析总结,梳理出沙湾组油气成藏3个显著特征:1沙湾组稀油油藏具典型的"亮点"特征。沙湾组稀油油藏在地震属性剖面上具强振幅的亮点特征,该特征是目前评价沙湾组圈闭目标含油气性的最有效判别依据;2浅层油气运移通道决定了斜坡区各段沙湾组油气丰度。前陆斜坡区白垩系沉积厚度是影响浅层油气运移难易的主要影响因素,白垩系沉积厚度越薄,就越有利于浅层断裂沟通油气,沙湾组油藏成藏可能性就越大;3沙湾组稠油成藏有利区仅限于车排子凸起北部。In the foreland slope area of Junggar basin,Neogene Shawan Formation is a favorable target stratum to find ＂high-quality, efficient＂ petroleum geological reserves.Based on the analysis of the discovered Shawan reservoir characteristics and reservoir-forming regularity-,found that hydrocarbon accumulation of Shawan formation has three typical characteristics：（1）The thin oil reservoir have typical ＂ Highlights＂ feature in Shawan Formation.On seismic attribute profiles, thin oil reservoirs is characterized by strong amplitude of the highlights feature,which is the most effective determining criterion to evaluating hydrocarbon traps target currently;（2）.Petroleum abundance in the Shawan formation are determined by the shallow immigration channal of oil and gas;. The thinner does the deposition thickness for the cretaceous, the more favorable for shallow fault link up the oil and gas.;（3）favorable accumulation areas for the heave oil are limited to the north of the Chepaizi uplift.

关 键 词：准噶尔盆地 前陆斜坡区 沙湾组 成藏特征 

分 类 号：P618.13[天文地球—矿床学]