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为寻找中国石油大港油田公司的接替资源,分析了港西油田浅层气藏储层条件、气源条件、运移条件以及浅层气得以保存的有利条件,结果表明:①储集层主要由馆陶组辫状河沉积砂体和明化镇组曲流河沉积砂体组成,砂体横向分布不稳定、浅层速度变化快,为研究区主要含气层系,储层物性好,为新近系油气提供了良好的储集空间;②港西地区断层发育,新近系和古近系又是不整合接触,为港西油田凸起的浅层气从深层往上运移创造了良好的条件,浅层区孔渗性好,烃源岩丰度高,因此砂层也成为有效的输导系统;③馆陶组、明化镇组均发育较好盖层,成藏和保存条件优越。结论认为:港西油田浅层天然气具有良好的油气勘探前景。
In order to find out the replacement resources of China National Petroleum Dagang Oilfield Company, the reservoir conditions, gas source conditions, migration conditions and shallow gas reservoirs in Hong Kong-West oilfield are analyzed. The results show that: (1) The braided river sedimentary sand body of Guantao Formation and the meandering stream sedimentary sand body of Minghuazhen Formation, the lateral distribution of sand body is unstable and the shallow velocity changes rapidly, which is the main gas-bearing formation in the study area, Oil and gas provide a good reservoir space. ② The faults in the western part of Hong Kong developed, and the Neogene and Paleogene are unconformable contacts. This created favorable conditions for the shallow gas in the raised oil fields of Kongxi West Oilfield to move from deep to upward , The permeability and permeability in shallow zone are good, and the abundance of source rock is high. Therefore, the sand layer also becomes an effective guiding system. (3) Both Guantao Formation and Minghua Formation have good cap rocks, and have favorable conditions for hydrocarbon accumulation and preservation. The conclusion is that the shallow natural gas in Hong Kong-West Oilfield has a good prospect of oil and gas exploration.