梁杰, 陈建文, 张银国, 杨艳秋, 李刚, 李清, 董刚, 杨传胜. 东海陆架盆地西部坳陷带中生界储层类型及成因[J]. 海洋地质与第四纪地质, 2016, 36(5): 131-138. DOI: 10.16562/j.cnki.0256-1492.2016.05.013
引用本文: 梁杰, 陈建文, 张银国, 杨艳秋, 李刚, 李清, 董刚, 杨传胜. 东海陆架盆地西部坳陷带中生界储层类型及成因[J]. 海洋地质与第四纪地质, 2016, 36(5): 131-138. DOI: 10.16562/j.cnki.0256-1492.2016.05.013
LIANG Jie, CHEN Jianwen, ZHANG Yinguo, YANG Yanqiu, LI Gang, LI Qing, DONG Gang, YANG Chuansheng. TYPE AND ORIGIN OF MESOZOIC RESERVOIRS IN WESTERN DEPRESSION ZONE OF EAST CHINA SEA SHELF BASIN[J]. Marine Geology & Quaternary Geology, 2016, 36(5): 131-138. DOI: 10.16562/j.cnki.0256-1492.2016.05.013
Citation: LIANG Jie, CHEN Jianwen, ZHANG Yinguo, YANG Yanqiu, LI Gang, LI Qing, DONG Gang, YANG Chuansheng. TYPE AND ORIGIN OF MESOZOIC RESERVOIRS IN WESTERN DEPRESSION ZONE OF EAST CHINA SEA SHELF BASIN[J]. Marine Geology & Quaternary Geology, 2016, 36(5): 131-138. DOI: 10.16562/j.cnki.0256-1492.2016.05.013

东海陆架盆地西部坳陷带中生界储层类型及成因

TYPE AND ORIGIN OF MESOZOIC RESERVOIRS IN WESTERN DEPRESSION ZONE OF EAST CHINA SEA SHELF BASIN

  • 摘要: 利用现有钻井、测井、地震等多种实际资料,分析了东海陆架盆地西部坳陷带中生界的地层和沉积特征,对比了陆域邻区储层类型,在此基础上探讨了研究区中生界的储层类型及其形成的原因,以期为进一步油气地质条件的综合分析及勘探方向的优选提供依据。分析认为,东海陆架盆地西部坳陷带中生界储层类型多,主要包括砂岩储层、风化壳储层和火山岩储层,其中以砂岩储层为主;中生界储层储集条件好,白垩系总体上优于侏罗系,但非均质性非常强。砂岩储层的发育受控于沉积环境,主要分布在河流、扇三角洲、滨岸等相带;风化壳储层、火山碎屑岩储层受构造运动的影响,构造高部位凸起区是其重要的潜在发育区。

     

    Abstract: Using the existing drilling, logging, and seismic data, this paper analyzed the stratigraphic and sedimentary characteristics of the Mesozoic depression belt of the Western Depression in the East China Sea Shelf Basin and made a comparison of reservoir types to the adjacent land area. On the basis, the types and origins of the Mesozoic reservoirs are discussed in order to provide the basis for comprehensive analysis of gas geological conditions and preferred direction for further exploration. The types of Mesozoic reservoirs found in the study area include sandstone reservoir, weathering-crust reservoir and volcanic rock reservoir. Among them, sandstone reservoir dominates. Cretaceous reservoirs are much better than the Jurassic. However, the sandstone reservoirs are strongly heterogeneous. The development of sandstone reservoirs depends upon its sedimentary environment. Fluvial, fan deltaic, and coastal environments are the main domains for sandstone reservoir to form. Weathering-crust reservoir and Volcano clastic rock reservoir are influenced by tectonic movement and structural highs are the favorable places for them to form.

     

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