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总结了南黄海盆地54年来油气探井钻探成败的经验,图示了井震圈闭的特征,指出迄今南黄海盆地完钻26口井,其中中国21口,总进尺54 502 m;124°E以西平均8 047km2钻井1口。钻井揭露地层包括石炭系、二叠系、三叠系、侏罗系、白垩系、古近系、新近系与第四系,最老地层为石炭系;钻遇岩性有碳酸盐岩、煤系和碎屑岩;揭露了16种地层接触关系,解剖了背斜、断块、透镜体岩性和不整合面等圈闭类型。中方21口井主要分布于南黄海盆地南部坳陷、北部坳陷和勿南沙隆起3个区带,先后在CZ6-1-1井获得轻质原油2.45t、在ZC1-2-1井泥岩岩心裂缝中见轻质油以及在其他3口井中见油气显示。最后提出了古生界参数井钻探等建议。
This paper summarizes the experience of oil and gas exploration drilling in the South Yellow Sea Basin over the past 54 years and illustrates the characteristics of the traps. It is pointed out that up to now 26 wells have been drilled in the South Yellow Sea Basin, of which 21 are China, with a total footage of 54 502 m and 124 ° E An average of 8 047km2 drilling 1. Drilling exposes strata including Carboniferous, Permian, Triassic, Jurassic, Cretaceous, Paleogene, Neogene and Quaternary, and the oldest strata are Carboniferous; Coal measures and clastic rocks. The contact relationships of 16 strata are revealed, and anticline, fault block, lithology and unconformity of lens body are dissected. The 21 Chinese wells are mainly distributed in the southern South Yellow Sea basin, the northern depression and the No-Nansha Uplift. They have successively obtained 2.45t of light crude oil in CZ6-1-1 well, See the light oil in the crack and see the oil and gas in the other three wells. At last, some suggestions such as drilling of Paleozoic parameters are put forward.