珠江口盆地西部新近系海相低阻轻质油田的发现

谢玉洪()

中国工程科学 ›› 2011, Vol. 13 ›› Issue (5) : 16-22.

PDF(869 KB)
PDF(869 KB)
中国工程科学 ›› 2011, Vol. 13 ›› Issue (5) : 16-22.

珠江口盆地西部新近系海相低阻轻质油田的发现

  • 谢玉洪()

作者信息 +

The new finding of Neogene marine low-resistivity light oil field in the western part of Pearl River Mouth Basin

  • Xie Yuhong

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History +

摘要

以文昌L低阻轻质油田的发现为背景,对其发现过程、油藏特征及成藏模式进行了研究,着重讨论了油-岩对比、浅海相储层新类型、油气输导体系与运聚优势方向、新技术等几个关键问题。研究表明,文昌组浅湖相烃源岩的排油、运油效率高,能够大规模长距离运移;珠江组一段上部发育浅海滩坝储层新类型;盆倾断裂与区域性优质海相储盖组合构成了油气输导体系;东沙构造运动导致的断裂体系构建了深层油气与上部浅海滩坝储层间的桥梁。论文还提出了“垂向运聚、次生构造-岩性”油气成藏模式,并就勘探得到的启示进行了探讨。

Abstract

Based on the new finding of Wenchang L low-resistivity light oil field,the finding process,reservoir characteristics and pool-forming pattern were studied. The oil-rock correlation, neritic reservoir type and advantageous migration and accumulation, and new techniques were discussed. The results showed that large amount of hydrocarbon generated by shallow lacustrine mudstone and shale of Eocene Wenchang formation could migrate from sag to Qionghai uplift distantly; neritic shoal-bar reservoir had developed in the 1st member of Zhujiang formation,and dip-sag faults and areal marine sandstone layers of the 1st and the 2nd member of Zhujiang formation had constituted hydrocarbon coursing system in Qionghai uplift; the Dongsha tectonic movement had controlled the late faults by which lower hydrocarbon could migrate upward to upper neritic shoal-bar sandstone vertically. Therefore the vertical migrating accumulating,structure-lithology-dominated, secondary pool-forming pattern were proposed,and it will promote further similar new findings. Finally the enlightenment of explorating new findings was discussed.

关键词

文昌L低阻轻质油田 / 发现过程 / 油藏特征 / 成藏模式 / 琼海凸起

Keywords

Wenchang L low-resistivity light oil field / finding process / reservoir characteristics / pool-forming pattern / Qionghai uplift

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谢玉洪. 珠江口盆地西部新近系海相低阻轻质油田的发现. 中国工程科学. 2011, 13(5): 16-22

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国家科技重大专项(2008ZX05023-01)
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