生物礁内部地震反射特征的地质解读及以体系域为单元的层序地层学认识——以珠江口盆地生物礁为例  

The Geological Interpretation of Seismic Reflection Characteristics within Reefs and the Understanding of Sequence Stratigraphy with System Tract as a Unit:A Case of Organic Reef Reservoirs in Pearl River Mouth Basin

作　　者：黄诚[1,2] 傅恒[1,2] 房晓璐[1] 陶碧娥[1] 刘雁婷[1] 

机构地区：[1]成都理工大学能源学院 [2]成都理工大学"油气藏地质及开发工程"国家重点实验室

出　　处：《海相油气地质》2011年第2期47-52,共6页Marine Origin Petroleum Geology

摘　　要：通过分析珠江口盆地东沙隆起生物礁生长方式对海平面变化的响应,归纳出不同时期礁体生长的几种可能的几何形态和相应的地震响应特征,并对生物礁内部地震反射特征进行地质解读,建立了成礁模式,获得以体系域为单元的生物礁层序地层认识,为层序划分和层位对比解释提供了较可靠的参考。The Tertiary reefs in the Pearl River Mouth Basin have huge oil potential.Though the identification of reef＇s seismic feature and the analysis of sequence stratigraphy have achieved in progress,the analysis with system tract as a unit on sequence stratigraphy of reef reservoirs is seldom done.By analyzing the growth patterns of reefs in response to the sea-level changes,we have summed up several possible geometric patterns and the corresponding seismic feature for the growth of reefs in Dongsha Uplift in the Pearl River Mouth Basin at different times.In accordance with the foregoing understanding of the reefs,the geological interpretation on seismic reflection characteristics is finished and a model of reef formation is built to be aware of stratigraphic sequence of reefs with system tract as a unit.It can provide a more reliable reference to horizon contrast and the division of sequence boundaries.

关 键 词：生物礁油气藏 地震反射特征 成礁模式 体系域 层序划分 

分 类 号：TE111.3[石油与天然气工程—油气勘探] P631.445[天文地球—地质矿产勘探]