| 东濮凹陷濮城地区沙三中亚段古地貌与沉积相关系 |
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| 引用本文： | 万涛,谈玉明,苏惠,王兴武,倪军锋,刘和美,万晶.东濮凹陷濮城地区沙三中亚段古地貌与沉积相关系[J].中国地质,2014,41(1):206-214. |
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| 作者姓名： | 万涛 谈玉明 苏惠 王兴武 倪军锋 刘和美 万晶 |
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| 作者单位： | 1.中原油田博士后科研工作站,河南濮阳457001;2.中原油田勘探开发科学研究院,河南濮阳457001 |
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| 基金项目： | 国家科技重大专项“大型油气田及煤层气开发”(2011ZX05006-004)资助? |
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| 摘 要： | 在富油气凹陷“满凹含油论”的指导下,近洼带岩性油气藏勘探是当前和今后一段时间渤海湾盆地东濮凹陷和其他凹陷油气勘探的重点,而古地貌分析是准确预测深部储层的基础,具有构造背景的有利沉积相带是勘探成功的关键?采用盆地模拟技术对东濮凹陷濮城地区沙三中亚段进行了古地貌恢复,通过岩心观察?薄片鉴定?粒度分析?砂地比和地震属性研究,确立了沉积相类型,系统研究了古地貌与沉积相之间的关系?结果表明:研究区沙三中沉积时期主要发育扇三角洲-湖相泥-滩坝沉积体系,古地貌控制沉积相类型及展布,在兰聊断层上升盘发育两大冲沟,在其下降盘发育两个扇三角洲,具有沟扇对应关系;濮城背斜带沙三中沉积时期发育两个古低凸起,砂体厚值区围绕古低凸起分布,具有滩坝砂体的发育特征?在濮城背斜带与濮城次洼之间的斜坡地区,发育的扇三角洲前缘砂体以及两个扇三角洲之间的滩坝砂体具备形成岩性上倾尖灭?砂岩透镜体油气藏的条件,为岩性油气藏勘探的有利目标?
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| 关 键 词： | 古地貌 盆地模拟 扇三角洲 滩坝 岩性油气藏 东濮凹陷 |
Palaeogeomorphology of Middle Es3 Formation in Pucheng area of Dongpu depression and its relationship with sedimentary facies |
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| WAN Tao,TAN Yu-ming,SU Hui,WANG Xing-wu,NI Jun-feng,LIU He-mei,WAN Jing.Palaeogeomorphology of Middle Es3 Formation in Pucheng area of Dongpu depression and its relationship with sedimentary facies[J].Chinese Geology,2014,41(1):206-214. |
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| Authors: | WAN Tao TAN Yu-ming SU Hui WANG Xing-wu NI Jun-feng LIU He-mei WAN Jing |
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| Institution: | 1. Postdoctoral Research Station of Zhongyuan Oilfield, Puyang 457001, Henan, China; 2. Research Institute of Exploration and Development, Zhongyuan Oilfield, Puyang 457001, Henan, China |
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| Abstract: | According to the "sag-wide oil-bearing theory" for the hydrocarbon-rich depression, the lithologic reservoir exploration near the sags has currently become the focus in the exploration work in Dongpu depression and other hydrocarbon-rich depressions of Bohai Bay basin. Paleogeomorphologic analysis makes up the foundation for accurate prediction of deep reservoirs,while favorable sedimentary facies with good tectonic background constitute the key to successful exploration. Based on the technology of basin modeling, the authors reconstructed the paleogeomorphology of Middle Es3 Formation in Pucheng area, Dongpu Depression. Through core observation, thin section identification, grain size analysis,sand ratios and seismic attributes research, the sedimentary facies types were established and their relationships with paleogeomorphology were studied in detail. The results show that the sedimentary systems in the study area were fan delta,lacustrine mudstone and beach bar facies, which were controlled by Paleogeomorphology. There were two gullies on the uplifted side of Lanliao fault and two fan deltas on the downthrown side, assuming a gully-fan corresponding relation. In Pucheng anticline belt, two paleo low uplifts were developed during the formation of Middle Es3, which were surrounded by thicker sandstone, with the sedimentary facies being beach bar. The fan delta front and the beach bar between the two fan deltas in the slope area are favorable exploration areas because upward dipping wedge-out reservoirs and lenticular reservoirs are likely to have been formed in these areas. |
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| Keywords: | paleogeomorphology basin modeling fan delta beach bar sands lithologic reservoir Dongpu depression |
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