石油与天然气地质 ›› 1999, Vol. 20 ›› Issue (1): 55-57,61.doi: 10.11743/ogg19990112

• 论文 • 上一篇    下一篇

莺歌海盆地充填史及中—深层储层特征

王华1, 朱伟林2, 王彦2   

  1. 1. 中国地质大学资源学院, 湖北武汉 430074;
    2. 海洋石油勘探开发研究中心, 河北高碑店 074010
  • 收稿日期:1998-10-09 出版日期:1999-03-25 发布日期:2012-01-18
  • 基金资助:

    国家自然科学基金项目(49672122和49732005)及中国海洋石油勘探研究中心9808课题资助

CHARACTERISTICS OF MEDIUM-DEEP RESERVOIR AND SEDIMENTARY HISTORY IN YINGGEHAI BASIN

Wang Hua1, Zhu Weilin2, Wang Yan2   

  1. 1. Institute of Resources, China University of Geosciences, Wuhan, Hubei;
    2. Research Center, China Offshore Oil Exploration & Development, Gaobeidian, Hebei
  • Received:1998-10-09 Online:1999-03-25 Published:2012-01-18

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摘要：

莺歌海盆地为前第三系基底上发育的断坳转换伸展盆地。纵向上总体显示海进充填序列。自始新世以来,该盆地经历了3次由快到慢的沉积过程,Tg-T70(280Ma以前)阶段为快速沉降期,最大总沉降率达600m/Ma,T70-T30(2.8～5.2Ma)阶段为500m/Ma,T30至现今(5.2Ma至现今),最大总沉降率又达600m/Ma.构造作用产生的沉降量占总沉降量的1/2～1/4,其他主要为均衡沉降所致。三角洲砂体、海滩砂体和浊积砂体是本区中-深层主要储集层。黄流组沉积时期,分流河道发育,可能形成良好的储层。

关键词: 充填序列, 沉降期, 沉降速率, 储层, 莺歌海盆地

Abstract:

Yinggehai Basin is a fault-depressed basin developed on the basement of PreTertiary System.In vertical,the basin shows generally transgressive filling sequences.The basin underwent three deposition processes since Eocene.Tg～T70(before 28 Ma)was rapid subsidence period,the total rate of descent was 600 m/Ma;the total descent rate of T70～T30(28 Ma～5.2 Ma)period was 500 m/Ma;that of T30～ present day (5.2 Ma～ present) is 600 m/Ma.The amount of subsidence caused by tectonics is about 1/2～1/4 of the total amount;the rest is mainly related to isostatic subsidence.It is proposed that deltaic,beach and turbidite sandbodies are the main mediumdeep reservoirs in the basin;the distributary channel sandbodies deposited during Huangliu Formation may be favourable reservoirs.

Key words: filling sequence, subsiding period, descent rate, reservoir, Yinggehai Basin