文献类型：期刊文献

中文题名：川西地区二叠系火山岩油气藏包裹体特征及成藏期划分

英文题名：Characteristics of fluid inclusions and classification of accumulation period in Permian volcanic reservoirs in western Sichuan Basin

作者：师政 施辉菊 王晔磊 夏鹏 向思源

第一作者：师政

机构：[1]贵州理工学院资源与环境工程学院,贵阳550025;[2]贵州大学资源与环境工程学院,贵阳550025;[3]中石化经纬有限公司地质测控技术研究院,山东青岛26600

第一机构：贵州理工学院资源与环境工程学院

年份：2025

卷号：71

期号：5

起止页码：1575-1584

中文期刊名：地质论评

外文期刊名：Geological Review

收录：;北大核心:【北大核心2023】；

基金：贵州省基础研究计划项目(编号:黔科合基础-ZK[2024]一般513);贵州理工学院高层次人才引进项目(编号:2023GCC081);贵州省科技支撑计划项目(编号:黔科合支撑[2022]一般257);贵州省科技平台及人才团队项目(编号:黔科合平台人才-CXTD[2023]008)的成果。

语种：中文

中文关键词：川西地区;火山岩油气藏;包裹体;成藏期次

外文关键词：western Sichuan Basin;volcanic reservoirs;fluid inclusion;hydrocarbonaccumulation period

摘要：火山岩油气藏是一种重要的非常规油气藏类型,因其地质特征复杂、储集机制多样,研究难度极大。为了解决川西地区二叠系火山岩油气藏的充注时间和成藏期次的问题,笔者等通过流体包裹体的岩相学分析、荧光显微分析、均一温度统计等方法,研究川西地区二叠系火山碎屑岩储层中烃类的充注时间和期次。结果表明:包裹体主要寄主矿物为孔洞中充填的石英和方解石,包裹体呈带状或呈群分布;烃类包裹体成熟度相对较高,在荧光下呈蓝白色;包裹体的均一温度峰值分别为110~130℃和150~170℃。结合研究区的埋藏—热演化史分析,川西地区二叠系火山岩油气藏的成藏期在早三叠世和中三叠世,时间为距今245~243 Ma和224~230 Ma。
Objectives:Volcanic rocks hydrocarbon reservoirs is an important type of unconventional oil and gas reservoirs.And the type of hydrocarbon reservoirs exhibit complex geological characteristics and diverse accumulation mechanisms,making them challenging to study.And very few work on the hydrocarbon accumulation period in Permian volcanic reservoirs in the western Sichuan Basin have been done.Therefore,we conduct comprehensive research and divide the hydrocarbon accumulation period.Methods:In order to determine the hydrocarbon accumulation period,we apply a method to Permian volcanic reservoirs in the western Sichuan Basin.And the method include petrographic analysis of fluid inclusions,fluorescence microanalysis and homogenization temperature measurement.This method has passed a lot of tests and is highly feasible and progressive.Results and Conclusions:The method of fluid inclusions analysis has been successfully applied to Permian volcanic reservoirs in the western Sichuan Basin.And the main two hydrocarbon accumulation periods are divided.The main host minerals of the inclusions are quartz and calcite filled in the pores,and the inclusions are distributed in bands or groups.The hydrocarbon inclusions are relatively mature and appear blue and white under fluorescence.The homogenization temperature of inclusions showed unimodal characteristics,and the peaks was 110~130℃and 150~170℃.Combined with the analysis of the burial and thermal evolution history of the study area,the Permian volcanic reservoirs in the western Sichuan Basin have experienced hydrocarbon accumulation periods,the period occurred in the Early Triassic(245~243 Ma)and Middle Triassic(224~230 Ma).