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浮游微藻是海洋和湖泊中的初级生产力 ,生物量巨大 ,平均脂类含量高 ,是沉积岩中有机质的主要母质来源 ,对石油和天然气的形成贡献最大。对下辽河坳陷早第三纪的大量微体浮游藻类化石研究表明 ,该坳陷油气资源的形成和微体浮游藻类 ,特别是沟鞭藻的大量存在密切相关 ,浮游藻类是该坳陷盆地油气形成有机质来源的重要基础之一。在微藻热模拟成烃实验中引入成岩早期生物、地化因子的影响 ,使模拟实验更接近自然界的实际情况。对微藻来源的生物标志物研究表明 ,作为高盐环境重要标志物的 2 ,6,10 ,14,18-五甲基二十烷也可能来源于藻类生物。在藻类热模拟产物中发现惹烯的存在 ,提示在解释油气藏的生物母质来源时必须特别谨慎
Planktonic microalgae are the primary productivity in the oceans and lakes. They have huge biomass and high average lipid content. They are the main source of organic matter in sedimentary rocks and contribute most to the formation of oil and natural gas. The study of a large number of microfacies phytoplankton fossils in the Lower Tertiary in the Lower Liaohe River Depression indicates that the formation of oil and gas resources in the depression is closely related to the existence of micro-planktonic algae, especially Daphcan algae, and the phytoplankton One of the most important foundations for the formation of sources of organic matter in oil and gas. In the microalgae thermal simulation of hydrocarbon generation experiment into the early diagenetic organisms, the impact of geochemical factors, the simulation experiments closer to the actual situation in nature. Studies on biomarkers derived from microalgae indicate that 2, 6, 10, 14, 18-pentamethyldicosane, which is an important marker of high salt environment, may also originate from algae. The presence of provoking ene in the thermal simulation of algae suggests that extreme caution must be exercised in interpreting the source of the biodegradability of the reservoir