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LW3-1-1井位于珠江口盆地白云凹陷东部,是我国南海东部海域深水区第一口探井。通过对LW3-1-1井珠江组和珠海组共4个气层(Gas1—Gas4)砂岩样品流体包裹体荧光颜色、均一温度、油气包裹体丰度和成岩序次的分析,并结合埋藏史和热演化史的分析认为,LW3-1-1井珠江组和珠海组曾发生过两期油和一期气充注,主要来自恩平组和珠海组烃源岩,Gas1—Gas3层油气充注时间约在8—0Ma;Gas4层油气充注时间约在5—0Ma,Gas1和Gas2层油充注强度较大。
The LW3-1-1 well is located in the eastern part of the Baiyun Sag in the Pearl River Mouth Basin and is the first exploration well in the deep-water area of the eastern South China Sea. Based on the analysis of the fluorescence color, the homogenization temperature, the abundance of hydrocarbon inclusions and the order of diagenesis of fluid inclusions in four gas layers (Gas1-Gas4) of Zhujiang Formation and Zhuhai Formation in LW3-1-1 well, According to the analysis of thermal evolution history, there are two phases of oil and gas charge in Pearl River Formation and Zhuhai Formation in LW3-1-1 well, mainly from the source rocks of Enping Formation and Zhuhai Formation, Gas1-Gas3 Note time is about 8-0Ma; Gas4 gas filling time is about 5-0Ma, Gas1 and Gas2 layer oil filling intensity is larger.