1号断裂带是莺 -琼盆地油气勘探的重点地区之一 ,有机包裹体研究有助于追踪油气及热流体活动的痕迹 ,为油气运聚成藏提供地球化学依据。通过包裹体薄片镜下观察、均一温度和盐度测试 ,认为工区内发育五种类型的有机包裹体 :(1)液态烃包裹体 ;(2 )气液态烃包裹体 ;(3)气态烃包裹体 ;(4 )含烃 CO2 包裹体 ;(5 )含烃子矿物包裹体。含烃 CO2 包裹体一般与气态烃共生 ,含烃子矿物包裹体既与液态烃共生又与气态烃共生。包裹体的类型及丰度变化表明 :1号断裂带油气运聚及深部热流体作用活跃 ,是油气运移的通道 ;1号断裂上升盘缺乏良好的盖层 ;1号断裂下降盘黄流组以上地层具有一定封盖能力。据成岩自生矿物形成序次及包裹体定向测温 ,认为 1号断裂带存在多期含烃热流体活动 ,早期有褐色液态烃运移 ,其次为含液态烃的气态烃 ,之后为气态烃及气态烃 +盐水 ,1号断裂中段含烃热流体活动最强 The No.1 fault zone is one of the key areas for oil and gas exploration in Ying-Qiong Basin. The study of organic inclusions helps to trace traces of oil and gas and thermal fluid activities and provides geochemical basis for hydrocarbon migration and accumulation. Through the microscopic observation of the thin inclusions, the uniform temperature and salinity tests, it is considered that there are five types of organic inclusions in the work area: (1) liquid hydrocarbon inclusions; (2) gas-liquid hydrocarbon inclusions; (3) gaseous hydrocarbon inclusions (4) hydrocarbon-bearing CO2 inclusions; (5) hydrocarbon-bearing mineral inclusions. Hydrocarbon-bearing CO2 inclusions generally coexist with gaseous hydrocarbons. Hydrocarbon-bearing mineral inclusions both coexist with liquid hydrocarbons and with gaseous hydrocarbons. The variation of the type and abundance of the inclusions shows that the migration and accumulation of oil and gas in the No. 1 fault zone and the deep thermal fluid play an active role in the migration of oil and gas. The No.1 fault rupture disk lacks a good cap rock. Above strata have a certain cap capacity. According to the sequence of diagenetic authigenic minerals and the orientation measurement of the inclusions, it is considered that there is a multi-stage hydrocarbon-heat fluid activity in the No.1 fault zone, the brown liquid hydrocarbon migrates in the early stage, followed by the hydrocarbon containing liquid hydrocarbons, followed by the gaseous hydrocarbons and Hydrocarbon + brine, the middle of fault No. 1 has the strongest hydrothermal activity