| 摘要: |
| 利用地震、测井、岩相等资料,对饶阳凹陷马西地区古近系进行了层序地层学研究,将其划分为3个二级层序和10个三级层序。层序Ⅷ、Ⅸ、Ⅹ为河流层序,可划分为基准面上升体系域和基准面下降体系域;层序Ⅰ、Ⅱ、Ⅲ、Ⅳ、Ⅴ、Ⅵ和Ⅶ为湖泊层序,每个层序可划分为低位体系域、湖侵体系域和高位体系域。在层序地层研究的基础上,认为马西地区同沉积构造坡折带的存在控制了砂体的展布、烃源岩的发育以及油气的运聚,因而对该地区隐蔽油气藏的形成起控制作用。建立了隐蔽油气藏在不同体系域中的发育模式,并提出了下一步勘探的有利方向。 |
| 关键词: 饶阳凹陷 马西地区 古近系 层序地层 隐蔽油气藏 |
| DOI： |
| 附件 |
|
| 基金项目:国家“十五”科技攻关项目(编号:2004BA616A-04-02) |
|
| Palaeogene sequence stratigraphy and subtle hydrocarbon exploration in the Maxi region,Raoyang depression,Hebei |
| ZHANG Da-zhi, JI You-liang, GU Jia-yu, CHU Li-lan, JI Li-dan |
(1. Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China;
2. Hangzhou Research Institute of Geology, PetroChina, Hangzhou 310023, Zhejiang, China;
3. China University of Petroleum, Beijing 102249, China;
4. Research Institute of Petroleum Exploration and Development, Daqing Oil Field Company, Daqing 163712, Heilongjiang, China) |
| Abstract: |
| The Palaeogene sequence stratigraphy in the Maxi region,Raoyang depression may be classified,on the basis of seismic data,well logs and sedimentary facies,into 3 second-order sequences and 10 third-order sequences.The third-order sequences VIII,IX and X are assigned to the fluvial sequences including the base-level rising systems tract and base-level falling systems tract.The third-order sequences Ⅰ,Ⅱ,Ⅲ,Ⅳ,Ⅴ,Ⅵ and Ⅶ represent the lacustrine sequences,each of which consists of lowstand systems tract,transgressive systems tract and highstand systems tract.The syndepositional structural breaks in the Maxi region have exercised a major control on the distribution of sandstones,development of source rocks,migration of hydrocarbons,and accumulation of subtle hydrocarbons in this region.The model for the accumulation of subtle hydrocarbons shows that Sequences Ⅲ,Ⅳand V below the structural breaks may be regarded as the targets for the further exploration of hydrocarbons. |
| Key words: Raoyang depression Maxi region Palaeogene sequence stratigraphy subtle hydrocarbons |
