摘要
四川盆地不同地质时期的古隆起的地质特征、构造演化之间的差异性对天然气聚集有决定性作用,综合最新地震、测井、岩心和露头资料,对四川盆地不同时期古隆起构造特征的差异性特征进行深入剖析,并依据其演化、现今保存等特征,将古隆起划分为三种类型:继承型古隆起、残余型古隆起和破坏型古隆起。研究发现继承型古隆起和残余型古隆起在演化过程中有利于有效改造储层、提供早期油气聚集的场所,古圈闭的持续存在为油气藏保存奠定基础,并针对性地建立了相应的成藏模式。在三类古隆起中,继承型古隆起具有更高的油气勘探潜力。
The difference between geological character and structural evolution of palaeo-uplift has decisive effect to gas accumula- tion in different geological period of Sichuan Basin. Based on latest seismic, logging, core and outcrop data, the different structural characters were analyzed and summarized, in addition, according to the evolution character and preservation condition, they were divided into three types, namely inheritance palaeo-uplift, residual palaeo-uplift and destructive palaeo-uplift. The results show that the inheritance palaeo-uplift and residual palaeo-uplift improve the reservoir for the early oil and gas accumulation and form the palaeo -traps for the late accumulation, accordingly, the accumulation models are built. In conclusion, among the three types of the palaeo-uplifts, the inheritance palaeo-uplift has the most potential for oil and gas exploration.
出处
《油气藏评价与开发》
CSCD
2016年第3期1-8,共8页
Petroleum Reservoir Evaluation and Development
基金
国家科技重大专项"中国大气田形成条件
富集规律及目标评价"(2011ZX05007)
关键词
古隆起
天然气
差异性特征
控制作用
四川盆地
palaeo-uplift, natural gas, different character, control action, Sichuan Basin
