石油学报 ›› 2000, Vol. 21 ›› Issue (1): 29-33.DOI: 10.7623/syxb200001005

• 地质勘探 • 上一篇    下一篇

东营三角洲的古流向研究

范代读1, 邱桂强1, 李从先1, 丛友滋2, 杨积增3   

  1. 1. 同济大学海洋地质开放实验室, 上海200092;
    2. 国家海洋局第一海洋研究所, 青岛266003;
    3. 胜利石油管理局, 山东东营257000
  • 收稿日期:1998-09-16 修回日期:1998-12-31 出版日期:2000-01-25 发布日期:2010-05-21
  • 作者简介:范代读,男,1972年4月生.1997年毕业于同济大学海洋地质系.现在同济大学攻读博士学位.通讯处:上海同济大学.
  • 基金资助:
    国家自然科学基金(49676288);胜利石油管理局共同资助

PALEOCURRENT PROPERTIES OF DONGYING DELTA IN BOHAI BAY BASIN

FAN Dai-du1   

  1. Tongji University
  • Received:1998-09-16 Revised:1998-12-31 Online:2000-01-25 Published:2010-05-21

摘要: 沉积组构分析表明,沙三中期研究区块以正常的三角洲前缘沉积为主.利用旋转钻岩心样,进行磁化率各向异性测试,通过磁极性定向最终恢复出古流向,直观地显示了东营盆地X、Y、Z区块的沙三中亚段沉积直接受控于东营三角洲,即流向主体与三角洲自东南而西北的进积方向相一致.综合分析研究区的物源和沉积特征,认为东营三角洲的范围应扩大,这预示着东营凹陷沙三中岩性油藏勘探有着更为广阔的领域和良好的前景;沉积物磁各向异性的研究方法本身也为古湖泊三角洲流向分析提供了新手段,为油气勘探的深化提供了新的科学依据.

关键词: 东营盆地, 岩性油藏, 三角洲, 古流向

Abstract: Sedimentary fabric analysis shows that middle member Ⅲ of Shahejie Formation (S3m) is mainly composed of normal deltafront sediments in this study areas. Magnetic anisotropy measurements were carried out on samples from rotary drilling cores, and the results were used to calculate the direction of paleo-current oriented by magnetic polarity. The distribution of paleo-current, coinciding with the prograding direction of the Dongying Delta from the southeast to northwest, distinctly manifests that in the study areas, X, Y and Z blocks in Dongying depression are directly controlled by Dongying Delta during the sedimentary epoch of S3m. The comprehensive analysis on the source and the sedimentary characteristics proves that area of Dongying Delta should be expanded. Thus, there will be widening area in the Dongying Delta inferred to be further prospect of lithological oil pool exploration. The method shown in this paper could be a new way to analyze the paleocurrent in paleo-limnological delta and will provide new scientific data to serve the petroleum exploration.

Key words: Dongying depression, lithological oil pool, delta, paleo-current

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