地质论评2025，Vol.71Issue(5)：1575-1584,10.DOI:10.16509/j.georeview.2024.10.021
川西地区二叠系火山岩油气藏包裹体特征及成藏期划分
Characteristics of fluid inclusions and classification of accumulation period in Permian volcanic reservoirs in western Sichuan Basin
摘要
Abstract
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).关键词
川西地区/火山岩油气藏/包裹体/成藏期次Key words
western Sichuan Basin/volcanic reservoirs/fluid inclusion/hydrocarbonaccumulation period引用本文复制引用
师政,施辉菊,王晔磊,夏鹏,向思源..川西地区二叠系火山岩油气藏包裹体特征及成藏期划分[J].地质论评,2025,71(5):1575-1584,10.基金项目
本文为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. This work was supported by Guizhou Provincial Basic Research Program(No.[2024]GEN 513) （编号:黔科合基础-ZK[2024]一般513）
Research Foundation for Advanced Talents of Guizhou Institute of Technology(No.2023GCC081) （No.2023GCC081）
Guizhou Provincial Key Technological R&D Program(No.[2022]GEN 257) （No.[2022]GEN 257）
Guizhou Provincial S & T Platform and Talent Team Program(No.CXTD[2023]008) （No.CXTD[2023]008）
