摘要
南海西北部莺歌海盆地油气渗漏系统发育,具有气烟囱及海底麻坑式"微渗漏"和油气苗"宏渗漏"两种类型或由两者构成的混合类型。其中尤以莺东斜坡带油气混合渗漏系统——油气苗及气烟囱显示更为引人注目,而盆地中部拗陷中央泥底辟带气烟囱及海底麻坑式"微渗漏"系统亦较普遍。该区烃源充足且油气至今尚处于生、运、聚、散的动平衡成藏过程之中,具备良好的油气生运聚成藏条件。认为油气勘探的重大突破在于加强该区油气渗漏系统及其运聚成藏条件的综合分析研究。建议根据油气运聚的动平衡成藏理论,预测有利油气富集区带并优选圈闭保存条件好的勘探目标。
Oil and gas leakage system develops in Yinggehai Basin,northwestern South China Sea,which is composed of the mixed type of gas chimney,sea bed dot/pit-like 'micro-leakage',and oil/gas seepage 'marcro-leakage',the oil/gas mixed system-oil/gas seepage and gas chimney on eastern Yinggehai slope is more remarkable,and the gas chimney at mud diapir belt in the central depression of the central basin and dot/pit-like 'micro-seepage' system on the sea bed are quite common.In the area,hydrocarbon source is abundant and up to now,it is still in the process of dynamic reservoir formation of generation,accumulation,gathering and dispersion,there is good condition of hydrocarbon generation,migration,accumulation and reservoir formation.It is recognized that key breakthrough for hydrocarbon exploration is to enhance the comprehensive analysis and research on oil/gas seepage system and migration,accumulation and reservoir formation.The proposal is suggested that the theory of dynamic balancing reservoir formation of oil/gas migration and accumulation should be used to predict and evaluate favorable hydrocarbon-rich area and optimize the explorative tar.gets with good trap and preservation.
出处
《西南石油大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第1期1-10,共10页
Journal of Southwest Petroleum University(Science & Technology Edition)
基金
国家重点基础研究发展计划项目(2007CB41170501)
国家重点基础研究发展计划项目(2009CB219501)
关键词
油气渗漏系统
油气苗/气烟囱
宏渗漏
微渗漏
圈闭保存条件
油气动平衡成藏
oil and gas leakage system
oil and gas surface seepage
gas chimney
micro-leakage/macro leakage
trap storage conditions
oil and gas dynamic balancing reservoir
