石油与天然气地质 ›› 2012, Vol. 33 ›› Issue (6): 914-922,943.doi: 10.11743/ogg20120613

• 层序与储层 • 上一篇    下一篇

黄骅坳陷板桥油田板桥油层沉积特征及演化

宋璠1, 苏妮娜1, 侯加根2, 杨少春1, 朱春艳1, 张瑞香1   

  1. 1. 中国石油大学 地球科学与技术学院,山东 青岛 266580;
    2. 中国石油大学 地球科学学院,北京 102249
  • 收稿日期:2011-10-15 修回日期:2012-11-30 出版日期:2012-12-28 发布日期:2013-01-10
  • 第一作者简介:宋璠(1982—),男,讲师,沉积储层。
  • 基金项目:

    教育部博士点基金项目(20120133120013);中央高校基本科研业务费专项资金项目(27R1201009A);山东省自然科学基金项目(ZR2011DL005)。

Sedimentary characteristics and evolution of the Banqiao reservoir in Banqiao oilfield,Huanghua Depression

Song Fan1, Su Nina1, Hou Jiagen2, Yang Shaochun1, Zhu Chunyan1, Zhang Ruixiang1   

  1. 1. School of Geosciences, China University of Petroleum, Qingdao, Shandong 266580, China;
    2. College of Geosciences, China University of Petroleum, Beijing 102249, China
  • Received:2011-10-15 Revised:2012-11-30 Online:2012-12-28 Published:2013-01-10

摘要:

渤海湾盆地黄骅坳陷板桥油田板桥油层沉积时期是黄骅坳陷断陷活动最强时期,湖盆迅速扩张使得盆地可容空间远大于沉积物补给,在油田的北区、中区形成了典型的深水重力流水道沉积,而南区受古地貌控制发育浅水滩坝沉积。通过岩心观察、相标志及测井相研究,在该区共识别出8种沉积微相。其中,重力流水道包括主水道、分支水道、水道侧翼和水道漫溢微相,滩坝沉积包括坝主体、坝侧缘、内缘滩和外缘滩微相。受湖盆扩张、沉积物源、古地貌及古气候等多种条件控制,垂向上沉积规模逐渐减小。沉积末期重力流水道仅在北区发育,弯曲分叉现象明显;南区滩坝沉积消亡。该区沉积特征及演化的精细研究,为进一步调整开发井网奠定了基础。

关键词: 滩坝, 重力流水道, 沉积特征, 沉积相演化, 板桥油田, 黄骅坳陷, 渤海湾盆地

Abstract:

The sedimentation of the Banqiao reservoir in the Banqiao oilfield occurred during the most active tectonism of the Huanghua Depression in the Bohai Bay Basin.The basin expanded so quickly that the accommodation space it provided was far more spacious for sedimentation.The typical deep-water gravity flow deposits were formed in the northern and central parts of the oilfield,while the shallow-water beach-bar deposits were formed in the southern part under the control of palaeo-geomorphology.Eight sedimentary micro-facies were identified in the study area through core observation and study of facies markers and logging facies.The gravity flow channel facies can be divided into 4 microfacies including main channel,distributary channel,channel flank and overflow.The beach-bar facies also can be divided into 4 microfacies,including main bar,bar flank,inner-margin beach and outer-margin beach.The sedimentary scale shrunk vertically due to many factors such as lake basin expansion,sediment input,palaeo-geomorphology and palaeo-climate.At the end of deposition,the gravity flow channel deposits were only developed in the northern part and the winding and forking phenomenon can be easily observed,while the beach-bar disappeared.The fine study of the sedimentary characteristics and evolutions in the area lays a sound foundation for adjustment of development well pattern.

Key words: beach bar, gravity flow, sedimentary characteristics, sedimentary facies evolution, Banqiao oilfield, Huanghua Depression, Bohai Bay Basin

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