摘要
潮汐作用影响下的曲流河沉积过程,相较于一般的曲流河沉积有较大的不同。受河流和潮汐双向水流的影响,导致储层空间分布较为复杂。文中运用地震沉积学方法,结合岩心、测井资料开展潮汐影响下的曲流河点坝精细解剖,确定了不同点坝单元的规模、空间分布、形态及叠置样式,揭示了潮汐影响下的曲流河点坝沉积演化规律,并对点坝的发育演化进行推理分析,再现了沉积过程,揭示了研究区储层分布及发育机理。研究成果不但深化了对储层的认识,也为地震资料辨识度高的地区开展沉积储层结构解剖提供了很好的借鉴。
The sedimentary process of meandering river under the influence of tide is quite different from the general meandering river. Influenced by the bidirectional flow of rivers and tides, the spatial distribution of reservoirs is complicated. In this paper, the fine dissection of point bars in meandering river under the influence of tides was carried out by using seismic sedimentology method and combining with core and logging data. The scale, spatial distribution, shape and superimposed style of different point bar units were determined, and the evolution law of point bar deposits in meandering river under the influence of tides was revealed. The development and evolution of point bars were reasoned and analyzed, the sedimentary process was reproduced, and the reservoir distribution and development mechanism in the study area were revealed. This study not only deepens the understanding of reservoirs, but also provides a good reference for the structural anatomy of sedimentary reservoirs by high identification of seismic data.
作者
程丽芳
王晖
尹艳树
王立鑫
刘振坤
王盘根
CHENG Lifang;WANG Hui;YIN Yanshu;WANG Lixin;LIU Zhenkun;WANG Pangen(College of Geosciences, Yangtze University, Wuhan 430100, China;CNOOC Beijing Research Center, Beijing 100000, China)
出处
《断块油气田》
CAS
CSCD
北大核心
2019年第4期464-469,共6页
Fault-Block Oil & Gas Field
基金
国家自然科学基金项目“多点地质统计学相控地震同时反演方法”(41872138),“三角洲前缘储层多点地质统计建模方法”(41572081)
关键词
地震切片
地震沉积学
点坝
侧积体
潮汐
曲流河
seismic slices
seismic sedimentology
point bars
lateral accretion
tides
meandering rivers
