摘要
对羌塘盆地鄂斯玛地区索瓦组11块流体包裹体样品荧光观察,显微测温、测盐等系统分析结果表明,该地区索瓦组储集层发生过5期热流体活动,其中第2期、第3期和第5期与油气成藏相关;第2、第3期流体活动主要以油充注为主,第5期流体活动主要为天然气充注。结合埋藏史分析可知,该区在晚侏罗世晚期到早白垩世早期（148.3×106~144.7×106a）、早白垩世早期（144.7×106~141.1×106a）和中新世中期（17.6×106~11.3×106a）存在3期大规模油气聚集成藏。
In this paper,11 samples of fluid inclusions from the Suowa formation in Esima area of Qiangtang basin were analyzed,including the fluorescence observation,micro-temperature and salinity measurement,etc.The results indicate that five periods of thermal fluid events took place in this Suowa reservoir,among which the second,third and fifth periods were related to the hydrocarbon accumulation in this area： the second and third periods were dominated by oil charging and the fifth by gas charging.Combined with the burial history analysis,it is concluded that there exist three periods of large-scale hydrocarbon accumulation processes,namely,in the end of Late Jurassic to the early of Early Cretaceous（148.3×106~144.7×106 a）,the early of Early Cretaceous（144.7×106~141.1×106 a） and the Middle Miocene（17.6×106~11.3×106 a）.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2013年第4期424-427,共4页
Xinjiang Petroleum Geology
基金
国家油气专项(XQ-2009-1)
关键词
青藏高原
羌塘盆地
索瓦组
流体包裹体
油气成藏
Qinghai-Tibet plateau
Qiangtang basin
Suowa formation
fluid inclusion
hydrocarbon accumulation
