【摘要】：通過區(qū)域構造、主要烴源巖分布及地球化學特征等研究,明確了阿瓦提凹陷發(fā)育的主力烴源巖。結果表明:阿瓦提凹陷發(fā)育有中—下寒武統(tǒng)、中—上奧陶統(tǒng)和石炭系—二疊系等3套烴源巖;中—下寒武統(tǒng)烴源巖在加里東晚期進入生油門限,處于低熟階段,海西早期處于成熟高峰階段,海西晚期處于高峰—高熟階段,燕山期處于高熟—過熟峰期,喜馬拉雅晚期處于過熟階段;中—上奧陶統(tǒng)烴源巖主要分布于阿瓦提凹陷的西北部,加里東晚期—海西早期處于未成熟階段,海西晚期處于低熟—成熟階段,燕山期處于成熟高峰期,喜馬拉雅晚期處于高熟—過熟階段。
[Abstract]:The main source rocks developed in Awati sag are identified through the study of regional structure, distribution and geochemical characteristics of main source rocks. The results show that there are three sets of hydrocarbon source rocks in the Awati sag, such as the Middle Lower Cambrian, Middle Upper Ordovician and Carboniferous Permian, and the middle and Lower Cambrian source rocks entered the oil generation threshold in the late Caledonian, and are in the low mature stage. In the early Hercynian stage, the late Hercynian period is in the peak to high maturity stage, the Yanshanian period is in the high ripeness to overmature peak stage, and the late Himalayan period is in the overmature stage, and the source rocks of the Middle and Upper Ordovician are mainly distributed in the northwest of Awati Sag. The late Caledonian to early Hercynian is in the immature stage, the late Hercynian is in the low maturation stage, the Yanshanian stage is in the mature peak period, and the late Himalayan stage is in the high ripeness to overmaturity stage.
【作者單位】： 中國石油塔里木油田分公司;中國石油杭州地質研究院;
【基金】：國家重點基礎研究發(fā)展計劃“973”項目“中國西部疊合盆地油氣富集規(guī)律與勘探潛力預測”(2011CB201106)
【分類號】：P618.13
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本文編號：2122277