渤海海域S油田新近系明化镇组河流相复合砂体叠置样式分析
- 收稿日期:
2013-07-14
- 修回日期:
2013-09-17
- 刊出日期:
2014-06-10
摘要: 河流相砂体是我国陆相盆地最主要的油气储集层之一，随着90年代渤海海域浅层河流相油气勘探获得重大突破，使得河流相储层成为当前海上油田研究的热点。本文利用野外露头、现代沉积和岩芯以及钻测井等资料，以高分辨率层序地层学原理为指导，在精细的层序地层格架基础上，分析S油田新近系明化镇组明下段河流相层序格架和砂体结构的沉积特征，总结砂体的发育规模特征。建立河流相砂体的沉积模式，将明下段划分为38个五级层序、13个四级层序和4个三级层序；在层序格架内把河流相砂体叠置样式划分为3种类型共7类样式，分别为堆叠型、侧叠型和孤立型，和紧密接触侧叠型、疏散接触侧叠型、离散接触侧叠型、下切侵蚀河道孤立型、决口扇孤立型、孤立河道和堆叠构型7类样式。河流相砂体叠置样式的建立推动了陆相高分辨率层序学的发展。
Analysis of Fluvial Facies Compound Sandbody Architecture of the Neogene Minghuazhen Formation of S Oilfield in the Bohai Bay
- Received Date:
2013-07-14
- Rev Recd Date:
2013-09-17
- Publish Date:
2014-06-10
Abstract: Fluvial sandbody is one kind of the most important hydrocarbon reservoir in China. With the exploration of fluvial facies getting a major breakthrough at shallow squenence in Bohai bay in 1990s, fluvial facies reservoir research becomes the current hot spot. According to the analysis for outcrops, modern sedimentation, cores and well-logging, guided by the theory and technology of high-resolution sequence stratigraphy, sedimentology, reservoir geology and seismic sedimentology, stacking pattern of sandybody of the Minghuazhen Formation of S oilfield had been developed. Also, the distribution characteristics of sandbody in sequence stratigraphic framework has been illustrated, and fluvial facies sedimentary models has been set up. It is considered that there are 4 3rd and 13 4th and 38 5th sequences and the sequence stratigraphy is built up. It is identified 3 classes and 7 types of Minghuazhen Formation in Bohai Bay Basin South-middle part of fluvial facies sandstone, in which 3 classes comprise amalgamated channel complex(ACM), stack channel(SC) and isolated sandbody(IS), and 7 types of stack channel(SC) is further divided into intimated contact(IC) and evacuated contact(EC) and discreted contact(DC), and isolated sandbody(IS) includes incised channel(IIC), crevasse-splay(CS) and isolated channel(ICH), and amalgamated channel complex(ACM). It makes a strong basis, which is fluvial sand architecture to the guidance of fluvial facies high resolution sequence subdivision and correlation.
渤海海域S油田新近系明化镇组河流相复合砂体叠置样式分析[J]. 沉积学报, 2014, 32(3): 586-592.
| 引用本文: |
渤海海域S油田新近系明化镇组河流相复合砂体叠置样式分析[J]. 沉积学报, 2014, 32(3): 586-592.
|
Analysis of Fluvial Facies Compound Sandbody Architecture of the Neogene Minghuazhen Formation of S Oilfield in the Bohai Bay[J]. Acta Sedimentologica Sinica, 2014, 32(3): 586-592.
| Citation: |
Analysis of Fluvial Facies Compound Sandbody Architecture of the Neogene Minghuazhen Formation of S Oilfield in the Bohai Bay[J]. Acta Sedimentologica Sinica, 2014, 32(3): 586-592.
|
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