东营凹陷泥页岩层序地层划分

发布时间：2019-02-08 21:28

【摘要】：东营凹陷的页岩油显示出较好的勘探潜力,但目前对泥页岩的系统研究还较少,地震及测井资料难以识别出有效的层序界面,制约了区域层序地层格架的建立。充分借鉴传统水进—水退层序划分的思路,将古水深变化的界面作为泥页岩层序界面识别的理论依据,将元素层序与GR层序划分方法相结合,探索出适合东营凹陷泥页岩层序地层划分的方法,建立了东营凹陷泥页岩层序地层格架。利用古环境、岩相、有机质丰度等资料,分析认为东营凹陷准层序组3与准层序组4界面和准层序组6与准层序组7界面之间的纹层状岩相、有机质富集段为有利的页岩油甜点段,且其横向连续性好。同时提出合理的钻采方式,可进一步提高页岩油勘探开发的经济效益。
[Abstract]:The shale oil in Dongying sag shows good exploration potential, but there is little systematic research on shale at present. It is difficult to identify the effective sequence interface by seismic and logging data, which restricts the establishment of regional sequence stratigraphic framework. Based on the traditional idea of sequence division, the interface of paleo-depth variation is taken as the theoretical basis for the recognition of shale sequence interface, and the element sequence is combined with the GR sequence division method. A suitable method for shale-sequence stratigraphic classification in Dongying sag was explored, and the sequence stratigraphic framework of mud-shale in Dongying sag was established. Based on the data of paleoenvironment, lithofacies and abundance of organic matter, it is considered that the lamellar lithofacies between the interface of the quasi sequence group 3 and the quasi sequence group 4 and the interface between the quasi sequence group 6 and the quasi sequence group 7 are analyzed. The enrichment section of organic matter is favorable for shale oil desserts, and its transverse continuity is good. At the same time, reasonable drilling and production methods can further improve the economic benefits of shale oil exploration and development.
【作者单位】：中国地质大学(北京)能源学院;中国石化胜利油田分公司勘探开发研究院;中国地质大学(武汉)能源学院;
【基金】：国家科技重大专项“济阳坳陷页岩油勘探开发目标评价”之“济阳坳陷页岩油甜点要素预测与目标评价”(2016ZX05049004-006) 中国石化科技攻关项目“济阳坳陷页岩岩相及油气赋存机制”(P13019)
【分类号】：P618.13;P539.2

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