干旱区生态环境知识资源中心(Arid): 庙西南凸起馆陶组浅水辫状河三角洲沉积特征及砂体演化

Arid

	庙西南凸起馆陶组浅水辫状河三角洲沉积特征及砂体演化
其他题名	Sedimentary Characteristics and Sand Body Evolution of Shallow Braided River Delta of Guantao Formation in Miaoxi’nan Uplift, Bohai Sea Area
	赵国祥; 官大勇; 刘朋波; 黄颖; 刘丹丹
来源期刊	沉积学报
ISSN	1000-0550
出版年	2018
卷号	36 期号:4 页码:807-817
中文摘要	基于大量已有钻井、地球物理、分析化验数据,渤海海域庙西南凸起馆陶组被证实具有稳定的构造环境、平缓的古地形、半干旱-干旱气候条件、充足的物源供给、古水深较浅的背景,因而具备形成浅水辫状河三角洲的条件。受制于特殊的气候环境,形成大平原,小前缘的沉积特征,水体面积较小,受河流作用改造为主,平原亚相砂体以具有双段式粒度概率曲线和强水动力沉积构造的分支河道为特征;干旱气候条件下不稳定的水体导致代表氧化环境的紫红色泥岩与代表弱还原环境的灰绿色、杂色泥岩呈交互沉积。依据气候变化、相对湖平面变化和物源供给等方面的耦合关系将研究区馆陶组浅水辫状河三角洲砂体形态分为孤立叠置式、多边叠置式及切叠连片式三种,分别对应馆陶组早中晚三个时期。砂体演化分析证实古地形、气候变化及相对湖平面变化是影响本区砂体样式的关键因素,馆陶组中部多边式砂体储层连通性好、平面分布广而顶部砂体平面分布广储层厚,为本区下一步勘探的重点。
英文摘要	Based on a large number of drilling, geophysical and analytical data, the Guantao Formation of Miaoxi’nan Uplift in the Bohai sea area was confirmed to have stable tectonic environments with gentle ancient topography, semiarid-arid climate, sufficient source supply, and shallow ancient water depth. All these conditions were suitable for the formation of a shallow braided river delta. For its special climate environment, the great plains and small front of sedimentary characteristics formed, the water area was small and dominated by river actions. The sand bodies of plain subfacies were characterized by branching channels with double section probability curves of grain size and strong power of sedimentary structures. In addition, under arid climatic conditions, unstable water bodies caused purple red mudstone on behalf of the oxidizing environment to interact with grey green and variegated mudstone on behalf of the weak reducing environment. On the basis of climate change, the relatively lake level change and provenance supply, the shallow braided river delta sand body of the Guantao Formation in the study area can be divided into isolated type, multilateral type and fold type, corresponding to each period of the Guantao Formation. Sand body evolution analysis confirmed that the ancient terrain, climate change and relative lake level variation were the key to influence sand body styles. The multilateral type of reservoir sand body of the middle period of Guantao Formation had good connectivity and flat wide distribution. The top part of the sand body reservoir with plane distribution and thickness could be a key target for the next exploration in this area.
中文关键词	渤海海域 ; 庙西南凸起 ; 馆陶组 ; 浅水辫状河三角洲 ; 砂体演化
英文关键词	Bohai Sea area Miaoxi’nan Uplift Guantao Formation shallow braided river delta sand body evolution
语种	中文
国家	中国
收录类别	CSCD
WOS类目	MINERALOGY
WOS研究方向	Mineralogy
CSCD记录号	CSCD:6301315
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/237391
作者单位	中海石油(中国)有限公司天津分公司渤海石油研究院, 天津 300452, 中国
推荐引用方式 GB/T 7714	赵国祥,官大勇,刘朋波,等. 庙西南凸起馆陶组浅水辫状河三角洲沉积特征及砂体演化[J],2018,36(4):807-817.
APA	赵国祥,官大勇,刘朋波,黄颖,&刘丹丹.(2018).庙西南凸起馆陶组浅水辫状河三角洲沉积特征及砂体演化.沉积学报,36(4),807-817.
MLA	赵国祥,et al."庙西南凸起馆陶组浅水辫状河三角洲沉积特征及砂体演化".沉积学报 36.4(2018):807-817.