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本文利用声波时差和电阻率测井曲线的叠和程度(△logR),以及岩心岩屑总有机碳(TOC)分析,总结了TOC垂向分布的三种模式,指出了其形成的主要控制因素即缺氧环境和极低的沉积速率,并经过研究得出:△logR的峰值与“最大洪水时期”相对应。虽然海相富有机质岩石可产生于任一体系域中(还决定于在盆地的位置),但离岸最远的陆坡地形(clinoform文中称为进积斜状体)是最利于形成含油的富有机质部位。文中最后指出,大型开阔的湖盆中控制TOC积聚的机制很可能与海相环境相同(即缺氧环境中的低沉积速率)。
In this paper, three modes of vertical distribution of TOC are summarized according to the logarithm of acoustic logging and resistivity log (△ logR) and total organic carbon (TOC) analysis of core cuttings. The main controlling factors That is, anoxic environment and very low sedimentation rate, and the result of the study is that the peak value of △ logR corresponds to the maximum flood period. Although marine-rich organic rocks can occur in either system tract (and also in the basin), the farthest offshore slope terrain (clinoform) is the most favorable for the formation of oil-rich Organic matter site. Finally, it is pointed out that the mechanism of controlling TOC accumulation in a large and open lake basin is likely to be the same as the marine environment (ie, the low deposition rate in anoxic environments).