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地质科学  2003, Vol. Issue (1): 60-73    DOI:
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河流沉积单元分析与储层宏观非均质性
吴朝东1, 刘建民2, 王军2, 李忠3, 谢小建1
1. 北京大学地球与空间科学学院, 北京, 100871;
2. 胜利石油管理局地质科学研究院, 东营, 257015;
3. 中国科学院地质与地球物理研究所, 北京, 100029
THE RESERVOIR HETEROGENEITY AND ANALYSIS OF SEDIMENTARY ARCHITECTURE IN RIVER DEPOSITS
Wu Chaodong1, Liu Jianmin2, Wang Jun2, Li Zhong3, Xie Xiaojian1
1. School of Earth and Space Science, Peking University, Beijing 100871;
2. Shengli Petroleum Bureau, Dongying, Shandong 257015;
3. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029
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摘要 沉积单元分析方法是详细解剖陆相盆地沉积过程和研究储集体空间变化的有效途径。本文以胜利油田沾化凹陷的孤东和孤岛油田馆陶组上段为例分析了河流砂体储层非均质性的变化规律。该段河流沉积分别由11种沉积单元组成了3种类型的河流沉积,其中河道的加积沉积单元和河道边缘砂体是主要的储层类型,河床滞留沉积和决口扇砂体以较低的渗透率为特征,储层性能较差。馆陶组上段自下而上,由于可容纳空间和沉积物比值的增大,致使槽状交错层组和层系厚度向上增大,孔隙度、渗透率、保存下来的河道宽度、连续性和连通程度降低,而底形多样性、相的分异性、相的保存程度和非均质性增加。由于可容纳空间/沉积物补给(A/S)比值变小,致使馆陶组上段中部的河流砂体储层最为发育。综合研究表明,馆陶组上段河流沉积的储层宏观、微观非均质性较强,主要受控于沉积单元的分布和可容纳空间的变化等因素。
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吴朝东
刘建民
王军
李忠
谢小建
关键词沉积单元   储层非均质性   馆陶组上段   沾化凹陷     
Abstract: Based on analyzing the river architecture and the reservoir property, we could establish the link between a reservoir property and the architecture. Three types of river sediments in Upper Member of the Guantao Formation in the Zhanhua Depression consisted of 11 architecture units, in which the accretion units and the edge of river were main reservoirs. The lag sediments and crevasse sandbody were high in heterogeneity because of their low permeability. On the basis of analyzing high resolution sequence stratigraphy, the bed forms, facies diversity and reservoir heterogeneity were obviously with the ratio of accommodation and sediment supply, and the accretion of the cross beds. The river reservoirs were well developed in middle part of the Guantao Formation with the low of accommodation and sedimentation. The results showed that the reservoir heterogeneity was very high, which was related to the distribution of the architecture and the river accommodation.
Key wordsArchitecture unit   Reservoir heterogeneity   Upper Member of the Guantao Formation   The Zhanhua Depression   
收稿日期: 2001-06-18;
基金资助:国家重点基础研究发展规划项目(G199904330:中国典型叠合盆地层序地层分析与构造古地理-岩相古地理再造)项目资助.
引用本文:   
吴朝东,刘建民,王军等. 2003, 河流沉积单元分析与储层宏观非均质性. 地质科学, (1): 60-73.
Wu Chaodong,Liu Jianmin,Wang Jun et al. THE RESERVOIR HETEROGENEITY AND ANALYSIS OF SEDIMENTARY ARCHITECTURE IN RIVER DEPOSITS[J]. Chinese Journal of Geology, 2003, (1): 60-73.
 
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[2] 陈中红, 查明. 典型陆相开放性断陷湖盆水化学场响应——以渤海湾盆地沾化凹陷为例[J]. 地质科学, 2012, (2): 387-405.
[3] 李阳, 李双应, 岳书仓, 王忠诚, 李忠, 吴朝东, 李翔. 胜利油田孤岛油区馆陶组上段沉积结构单元[J]. 地质科学, 2002, (2): 219-230.
 
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