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chao shui pen di chang shan po mian qing tu jing zu wang zhuang he chen ji te zheng chu tan
Author(s): 
Pages: 8-11+4
Year: Issue:  4
Journal: Journal of Xi'an Petroleum Institute(Natural Scien

Keyword:  剖面网状河河道天然堤湖泊沼泽/[青土井组潮水盆地决口扇];
Abstract: 长山剖面位于潮水盆地西北缘,为一套含煤碎屑岩沉积,沉积厚度459.6m,前人认为属河湖相沉积。通过对组成该剖面的岩相组合,古生物化石及剖面结构的详细观察和研究,结合对中侏罗世研究区的构造、古气候条件及古地理背景的分析,认识到长山剖面为一套网状河相沉积,该沉积可以识别出河道、天然堤、决口扇、湖泊和沼泽五种沉积微相,其中以河道和沼泽两种微相最为发育。河道砂体是良好的储集层,具有较高的孔隙度和渗透率,而河道间湿地沉积可以成为较好的烃源岩。因此,该网状河沉积具有较好的油气远景。
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