塔里木盆地阿瓦提凹陷主力烃源岩探讨及油源对比  

MAIN HYDROCARBON SOURCE ROCKS AND CONTRASTS FOR AWATI SAG IN TARIM BASIN

作　　者：席勤[1] 余和中 顾乔元[1] 钱玲[1] 李新生[1] 李毓丰[1] 

机构地区：[1]中国石油塔里木油田分公司,新疆库尔勒841000 [2]中国石油杭州地质研究院,浙江杭州310023

出　　处：《大庆石油地质与开发》2016年第1期12-18,共7页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家重点基础研究发展计划"973"项目"中国西部叠合盆地油气富集规律与勘探潜力预测"(2011CB201106)

摘　　要：通过区域构造、主要烃源岩分布及地球化学特征等研究,明确了阿瓦提凹陷发育的主力烃源岩。结果表明:阿瓦提凹陷发育有中—下寒武统、中—上奥陶统和石炭系—二叠系等3套烃源岩;中—下寒武统烃源岩在加里东晚期进入生油门限,处于低熟阶段,海西早期处于成熟高峰阶段,海西晚期处于高峰—高熟阶段,燕山期处于高熟—过熟峰期,喜马拉雅晚期处于过熟阶段;中—上奥陶统烃源岩主要分布于阿瓦提凹陷的西北部,加里东晚期—海西早期处于未成熟阶段,海西晚期处于低熟—成熟阶段,燕山期处于成熟高峰期,喜马拉雅晚期处于高熟—过熟阶段。With the help of the studies on the regional tectonics, main hydrocarbon source rock distribution, geo- chemical characteristics and so on, the key hydrocarbon source rocks developed in Awati Sag are made clear. The achievements show that there are three sets of the source rocks developed in the sag： Middle- Lower Cambrian se- ties, Middle- Upper Ordovician series and Carboniferous-Permian system; the rocks in the former entered into the generation threshold-low mature stage in the later period of Caledonian orogeny, into the peak mature stage in the early period of Hercynian orogeny, into the peak-high mature stages in the later period of Hercynian orogeny, into the high-over mature stages in the period of Yanshan orogeny, into the over mature stage in the later period of Hi- malayan ; the middle is mainly distributed in Northwest Awati Sag, the immature stage is distributed in the later pe- riod of Caledonian orogeny and early period of Hercynian orogeny, the low-over mature stages are in the later period of Hercynian orogeny, the peak mature stage is in the period of Yanshan orogeny, the high-over mature stages are in the later period of Himalayan orogeny.

关 键 词：塔里木盆地 阿瓦提凹陷 地球化学 寒武系 烃源岩 

分 类 号：TE122.1[石油与天然气工程—油气勘探]