南堡凹陷东营组烃源岩评价及油源贡献

发布时间：2018-04-19 04:37

  本文选题：东营组 + 烃源岩评价　； 参考：《大庆石油地质与开发》2017年03期

【摘要】：为了有效评价东三段烃源岩并明确其油源贡献,以大量的钻井、地球化学以及油气勘探资料为基础,基于烃源岩评价的特征参数及油源对比方法,探讨了东营组烃源岩特征及烃源岩对油气成藏贡献。研究结果表明:东营组有效烃源岩主要发育于东三段,其w(TOC)平均为1.1%~1.2%,最高可达7.8%以上,为好烃源岩,有机质类型以Ⅱ型为主,成藏期(距今2 Ma)R_o值为0.7%~0.9%,处于大量生油高峰,最厚的有效烃源岩位于林雀洼陷与柳南洼陷,其次为曹妃甸洼陷;与沙一段和沙三段相比,东三段典型的生物标志化合物特征为Pr/Ph值高以及伽马蜡烷/C_(31)霍烷值低,以此可较好地与沙一段和沙三段烃源岩进行区分。油源对比结果表明,现存的东营组烃源岩贡献的原油主要呈环状分布于柳南洼陷以及林雀洼陷附近,曹妃甸洼陷附近仍有较大勘探潜力。
[Abstract]:In order to effectively evaluate the source rocks of the third member of the eastern region and determine their oil source contribution, based on a large amount of drilling, geochemistry and oil and gas exploration data, based on the characteristic parameters of source rock evaluation and the method of oil source correlation,The characteristics of source rocks in Dongying formation and their contribution to hydrocarbon accumulation are discussed.The results show that the effective source rocks of Dongying formation are mainly developed in the third member of Dongying formation, and the average value of the source rocks is 1.1% and 1.2%, with the highest value of 7.8%. The source rocks are good source rocks. The type of organic matter is mainly type 鈪，

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