彭州气田雷口坡组流体包裹体特征及成藏期次  

Study on Fluid Inclusion Characteristics and Hydrocarbon Accumulation Periods of Leikoupo Formation in Pengzhou Gasfield

作　　者：刘成川[1] 王园园 赵爽[1] 段永明[1] 张岩[1] 夏宇 LIU Chengchuan;WANG Yuanyuan;ZHAO Shuang;DUAN Yongming;ZHANG Yan;XIA Yu(Exploration and Development Research Institute,Southwest Oil & Gas Company of Sinopec,Chengdu,Sichuan 610041,China;College of Energy Resources,Chengdu University of Technology,Chengdu,Sichuan 610059,China)

机构地区：[1]中国石化西南油气分公司勘探开发研究院,四川成都610041 [2]成都理工大学能源学院,四川成都610059

出　　处：《西安石油大学学报（自然科学版）》2020年第6期17-21,共5页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：国家科技重大专项(2017ZX05005004-010)。

摘　　要：为了厘清彭州气田油气藏形成和分布的规律,分析流体包裹体特征,并结合埋藏史模拟对彭州气田雷口坡组雷四上亚段储层油气成藏期次及充注时间进行研究。结果表明:研究区经历了2期成藏,第一期盐水包裹体的均一温度峰值为110~130℃,主要为液烃包裹体,烃类注入时期为晚三叠世,对应的地质时间为215 Ma;第二期盐水包裹体的均一温度峰值为130~150℃,主要是气液烃包裹体,烃类注入时期为中晚侏罗世,对应的地质时间为170 Ma。彭州气田雷四段在晚三叠世中期达到生烃高峰,晚三叠世末期—晚侏罗世中期为高成熟演化阶段,即生气阶段,在晚侏罗世中后期进入过成熟演化阶段。In order to clarify the formation and distribution laws of oil and gas reservoirs in Pengzhou gas field,the characteristics of fluid inclusions are analyzed,and the hydrocarbon accumulation periods and filling time of the upper of 4th member of the Leikoupo Formation in Pengzhou gas field are studied combining with the burial history.The results show that the study area has experienced two stages of hydrocarbon accumulation.The peak homogenization temperature of salt water inclusions in the first stage is 110~130℃,which are mainly liquid hydrocarbon inclusions,and the hydrocarbon charging period is late Triassic,corresponding to the geological time of 215 Ma.The peak homogenization temperature of salt water inclusions in the second stage is 130~150℃,which is mainly composed of gas-liquid hydrocarbon inclusions,and the hydrocarbon charging period is middle-late Jurassic,corresponding to the geological time of 170 Ma.The fourth member of Leikoupo formation in Pengzhou gas field reached the peak of hydrocarbon generation in the middle of Late Triassic.The late of Late Triassic to the middle of Late Jurassic was a high mature stage,i.e.gas generation stage.The middle and later stage of Late Jurassic is over mature evolution stage.

关 键 词：流体包裹体 油气成藏期次 均一温度 充注时间 彭州气田 

分 类 号：TE122.1[石油与天然气工程—油气勘探]