摘要
枣园油田地质特征复杂,当前开发难度大。在以高分辨率层序地层学理论为指导,利用井—震资料确定高级次地层框架,用沉积旋回划分砂层组,用沉积韵律划分小层,在旋回性不明显的层段,利用厚度变化规律辅助划分层组界线,在厚砂体的劈分上注重相序,并注意利用自然电位曲线、自然伽马曲线或电阻率曲线上较明显的标志,将枣北地区枣Ⅳ油层组划分为1个长期基准面旋回,7个中期基准面旋回,21个短期基准面旋回,大致对应7个砂层组和21个小层,有效地降低了复杂断块储层研究的多解性,最大程度地实现了动态、静态资料的统一,对枣园油田的下一步开发部署提供了参考。
The current development of Zaoyuan oilfield is difficult due to its complex geological feature.In according to integration wells with seismic data,we use the high-resolution sequence stratigraphy to set up the stratigraphic framework of the high times,classifying the sand layer with sedimentary cycle and the small layer with sedimentary rhythm.We use the variation of layer thickness to auxiliary determine the formation boundary when the cycles is not obvious.By means of phase sequence,self-potential curve,gamma ray curve or resistivity curve,the thick sand body in the IV oil layers of Zaoyuan can be classified into a long-term base level cycle,7 mid-level cycles,and 21 short-term base level cycle,corresponding to 7 sandbeds and 21 member in the northern of Zaoyuan.Thus,it effectively reduce the ambiguity of the complicated block reservoir and greatly unite of the dynamic and static data so as to provide a reference for the next development and deployment of petroleum in the Zaoyuan oilfield.
出处
《天然气地球科学》
EI
CAS
CSCD
北大核心
2010年第4期617-620,共4页
Natural Gas Geoscience
关键词
高分辨率层序地层学
地层格架
井—震结合
复杂断块
标志层识别
High-resolution sequence
Stratigraphic framework
Logging-seismic integration
Complex fault block
Identification of marker bed.
