储层流体包裹体研究是油气充注期次分析的重要手段。对琼东南盆地崖城地区下第三系崖城组和陵水组砂岩储层5口钻井岩芯样品进行包裹体镜下显微观察、荧光分析和伴生盐水包裹体均一温度测量,表明该区下第三系主要发生过两期油气充注：第一期充注油气主要发淡黄色荧光,以液态烃包裹体和气液两相烃包裹体为主,伴生盐水包裹体的均一温度主要分布在130～160℃,根据区域埋藏热演化史推断油气充注时间为晚中新世—早上新世。第二期充注油气主要发淡蓝色荧光,以气态烃包裹体、气液两相烃包裹体和气液固三相烃包裹体为主,伴生盐水溶液包裹体的均一温度范围为160～190℃,充注时间应为第四纪。%The fluid inclusion of reservoir is one of important means to reveal the time of oil and natural gas charging.In present study the time of oil and natural gas charging in Yacheng and Lingshui Formation in Yacheng area of the Qiongdongnan Basin,southern China have been investigated by the analysis of type,distribution,fluorescence and homogenization temperature of fluid inclusions in samples of 5 Wells.The results indicated that the oil and natural gas bearing hydrothermal fluids have been charged twice into the sandstone reservoirs in the Paleogene reservoir.The first charge stage was characterized by condensate-gas with buff-yellow fluorescent light,its hydrocarbon fluid inclusions are dominated by liquid hydrocarbon inclusions and gas-liquid hydrocarbon inclusions,and the homogenization temperature（Th） of coeval aqueous inclusions ranges from 130℃ to 160℃.The time of first condensate-gas charging had been estimated at late Miocene to early Pliocene based on the regional burial thermal evolution history.The second charged stage was characterized by oil and natural gas with light blue fluorescence.Their hydrocarbon fluid inclusions were dominanted by gas hydrocarbon inclusions,gas-liquid hydrocarbon inclusions and three-phase hydrocarbon inclusions,the Th of coeval aqueous inclusions showed higher range from 160℃ to 190℃ than the 1st charged stage,and the charging time was estimated as Quaternary.
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