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现代地质 ›› 2005, Vol. 19 ›› Issue (Suppl): 7-13.

• 石油地质 • 上一篇    下一篇

济阳坳陷罗家地区和垦西地区沙河街组水下冲积扇与扇三角洲的沉积学比较

彭传圣1,2,王永诗2,林会喜2,纪友亮3,孙爱民   

  1. 1中国科学院 地质与地球物理研究所,北京100029;2胜利油田有限公司 地质科学研究院,山东 东营257015;
    3同济大学 海洋与地球科学学院,上海,200092;4胜利油田有限公司 纯梁采油厂,山东 东营257000
  • 收稿日期:2004-10-08 修回日期:2004-10-12 出版日期:2005-03-20 发布日期:2013-04-08
  • 作者简介:彭传圣,男,博士研究生,1975年出生,石油地质学专业,主要从事油气勘探方面的研究工作。
  • 基金资助:

    中国石油化工集团公司攻关项目(P00019)

SEDIMENTOLOGY COMPARISON BETWEEN FAN DELTA AND SUBAQUEOUS ALLUVIAL FAN IN THE LUOJIA AND
  KENXI AREAS,JIYANG DEPRESSION

PENG Chuan-sheng1,2,WANG Yong-shi2,LIN Hui-xi2,JI You-liang3,SUN Ai-min4   

  1. 1 Chinese Academy of Sciences,Beijing100029,China;
    2 Shengli Oilfield Company Limited,Dongying,Shandong257015,China;
    3 Tongji University,Shanghai200092,China;
    4Shengli Oilfield Company Limited,Dongying,Shandong257000,China
  • Received:2004-10-08 Revised:2004-10-12 Online:2005-03-20 Published:2013-04-08

摘要:

充分分析岩心、测井、各类薄片资料及其他分析化验资料,对济阳坳陷罗家、垦西地区砂砾岩体沉积学特征进行研究,确定罗家、垦西地区沙河街组砂砾岩体分别为水下冲积扇和扇三角洲沉积相类型。罗家砂砾岩体沉积相归属争议较大,根据多种因素分析,其应属于较陡缓坡带的水下冲积扇沉积。垦西砂砾岩体因未见水上沉积,易被划分为水下冲积扇沉积。经研究表明该区砂砾岩体为特殊扇三角洲相,其与常见的扇三角洲不同,是由根部水下冲积体、扇三角洲前缘及前扇三角洲亚相组成。通过比较认为水下冲积扇与扇三角洲在古地貌、水动力条件、各种沉积特征及物性特征等多方面均有较大差异,具有不同的沉积模式。这些研究结果为在砂砾岩体稠油勘探中寻找有利相带和开采中选择注水措施等提供了依据。

关键词: 济阳坳陷, 砂砾岩体, 水下冲积扇, 扇三角洲, 沉积学

Abstract:

The glutenites reserve abundant heavy oil in the Luojia and Kenxi areas,Jiyang depression. But their reservoir capabilities, oil saturation and fluid kinematical characters during exploitation have much discrepancy. By analyzing drilling, logging and kinds of analytical data in detail, their sedimentological characteristics are studied. Facies of Luojia glutenites has been disputed as nearshore subaqueous fan, subaqueous alluvial fan and fan delta facies by some scholars. But combined many factors, they should be of subaqueous alluvial fan which developed on steep flat slope.Facies of Kenxi glutenites always are classified as subaqueous alluvial fan due to no onshore sediment. According to their sedimentological characteristics, they are of special fan delta which comprises of rooting subaqueous alluvial bodies subfacies,fan delta leading edge subfacies and fore fan delta subfacies. By comparing, the two facies are different in many aspects such as sedimentary backgrounds, sedimentary dynamic settings and sedimentary characters including lithofacies, rock textures, sedimentary structures and facies sequences. They have different sedimentary models. This study provids important information for explorating advantageous microfaciesreservoirs and selecting waterflooding programs during glutenites heavy oil exploration and exploitation.

Key words: Jiyang depression, glutenite, fan delta, subaqueous alluvial fan, sedimentology

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