摘要
准噶尔盆地腹部陆南凸起石西油田石炭系火山岩储层中发现丙期烃类（沥青、原油）的聚集。地球化学研究表明，沥青和原油有相似的生源组成。但前者处于低成熟阶段；后者处于高成熟阶段，其形成是蒸发分馏作用的结果。成藏史分析表明，早期油藏形成于海西期，晚期油藏可能形成于燕山末期至喜山期。
Hydrocarbon accumulation (bitumen and crude oil) of two generation have been found in the Carboniferous volcanic reservoirs in Shixi oilfield, located in the Liunan uplift in the central part of Junggar basin.Geochemical study has demonstrated that bitumen exhibits similar composition of organic precursor with crude oil. The former appears to be in low maturation stage, while the latter is likely to be in high maturation stage and its formation is resulted from fractional distilation. An analysis of pool formation history show that earlier oil pool was formed in Variscan event and later oil pool was developed in late Yanshan-Himalayan event.
出处
《石油勘探与开发》
EI
CAS
CSCD
北大核心
1995年第2期13-16,共4页
Petroleum Exploration and Development
关键词
油气藏
热成熟度
油气聚集
石油生成
Junggar basin, Volcanic reservoir, Bitumen, Crude oil, Geochemical characteristic, Thermal maturity
