海洋地质前沿2017，Vol.33Issue(10)：57-63,7.DOI:10.16028/j.1009-2722.2017.10007
油气运移中断层精细刻画的优选方法——以南海北部珠江口盆地惠西南地区为例
OPTIMIZATION OF THE METHOD FOR DETAILED FAULT DESCRIPTION IN HYDROCARBON MIGRATION:TAKING SOUTHWEST HUIZHOU OF ZHUJIANGKOU BASIN, NORTH CHINA SOUTH SEA AS AN EXAMPLE
摘要
Abstract
Migration is one of the key elements to hydrocarbon accumulation.It includes two stages:primary and secondary migrations.The secondary migration is the process which determines the main migration directions of oil and gas,the spatial assemblage of source-reservoir-accumulation and the hydrocarbon migration through reservoir and other types of passages.Secondary migration is caused by the change of conditions prevailed in oil and gas accumulation,including the migration to a new reservoir along the pathways of faults and unconformities.Doubtlessly,faults play a very important role in hydrocarbon migration and accumulation.However,previous researches about faults and their effects on hydrocarbon migration and transportation are mainly qualitative which are too far from enough.Macroscopic,three dimensional and practical studies are obviously lacking.Therefore,in this paper,geophysical approaches are adopted firstly to obtain high quality fault profiles to describe in detail the faults strikes and microfractures distribution patterns,then to analyze the difference between hydrocarbon sealing and transportation caused by faults,and finally to provide necessary support for the analysis of oil and gas migration pathways.The adopted methods includes the followings:at first,conduct variance cube attribute analysis for seismic data and extract time slices to acquire the spatial distribution of faults;then,based on the variance attributes,using ant-tracking technique to characterize the microfracture overview,and analyze the difference between hydrocarbon sealing and transportation for different faults and/or the different parts of a fault;then use 3D visualization with high imaging precision to further analyze the effect of faults on hydrocarbon sealing and transportation spa tially to supply new ideas and methods for the in-depth study of hydrocarbon migration pathways.Such a research idea and method brings seismic and geology closely,and can much enhance the precision and reliability of direction identification of hydrocarbon secondary migration.It has proved efficient to trap evaluation and optimization in hydrocarbon exploration.关键词
油气运移/二次运移/方差体/蚂蚁体/三维可视化Key words
hydrocarbon accumulation/secondary migration/variance cube/ant algorithm/3D visualization分类
能源科技引用本文复制引用
李如山,陈胜红,胡兴豪,李瑞彪,邹雅铭,李志晔..油气运移中断层精细刻画的优选方法——以南海北部珠江口盆地惠西南地区为例[J].海洋地质前沿,2017,33(10):57-63,7.基金项目
“十二五”国家科技重大专项“南海东部海域大中型油气田形成条件与分布”(2011ZX05023-006-003) （2011ZX05023-006-003）
