塔里木盆地哈得逊油田成藏研究探讨

塔里木盆地哈得逊油田存在3个相互独立的油藏:石炭系东河砂岩油藏及中泥岩段薄砂层油藏、志留系柯坪塔格组上3亚段油藏。它们的油气来源于同一套烃源岩、具有相同的区域性盖层。多

PROBE INTO HYDROCARBON ACCUMULATIONS IN THE HADSON OILFIELD,TARIM BASIN

There are three independent oil reservoirs in Hadson Oilfield in Tarim Basin,i.e.,Carboniferous Donghe sandstone reservoir,thin sand bed reservoir in mudstone section of middle Carboniferous and the oil reservoir of the 3rd sub-member of upper Kepingtage Formation of Silurian,which all originate in the same suite of source rocks and are covered by the same regional caprocks,whereas studies on the Hydrocarbon accumulation stages show that the oil reservoirs came into being in different periods.Comprehensive analyses on the periods of hydrocarbon forming and discharge,fluid conducting system and faulting stages show that the oil reservoirs originally came into being at late Hercynian stage and then experienced various degrees of hydrocarbon adjustment owing to tectonic activity at late periods.The outcome of fluid inclusion analyses of current Donghe sandstone and thin sand bed reservoir indicates the episode of new oil reservoir coming from ancient oil reservoir adjustment at late Himalayan stage.