摘要
通过流体包裹体显微荧光和均一化温度分析,结合软件模拟埋藏史,认为东营凹陷广利-八面河地区沙四上亚段储层经历过3期油气充注：第1期为距今37.92-29.74Ma,发生于沙一段沉积晚期到东营组沉积早期;第2期为距今11.9-9.06Ma,发生于馆陶组沉积中期;第3期为距今5.21-0Ma,发生于明化镇组沉积期至现今。研究区油气充注以第3期为主。研究表明,第3期油包裹体普遍存在,而第1期和第2期油包裹体仅分布于距排烃中心较近的相对较深的砂组中,反映烃源岩的热演化程度和排烃强度控制了油气运移的范围和充注特征。
Based on the analyses of microscopic fluorescence and homogenization temperature of fluid inclusions and in combination with the burial history simulated by using software,it was considered that the upper member of Es4 experienced three stages of hydrocarbon charging.The first stage was in 37.92~29.74Ma,occurred from the late Es1 period to early Dongying period;the second stage was in 11.9~9.06Ma,occurred in the middle Guantao period;the third stage was in 5.21~0 Ma,occurred from Minghuazhen period to the present day,which was the main period of hydrocarbon charging.The studies indicate that oil inclusions of the third stage are distributed extensively,while those of the first and second stages are only distributed within the relative deep sand groups close to the hydrocarbon expulsion center,which reflects that the hydrocarbon migration extent and charging characteristics are controlled by the thermal evolution degree and hydrocarbon expulsion intensity of source rocks.
出处
《石油天然气学报》
CAS
CSCD
北大核心
2011年第4期17-21,164,共5页
Journal of Oil and Gas Technology
基金
国家科技重大专项(2008ZX05003-002)
关键词
流体包裹体
均一化温度
油气充注史
沙四上亚段
东营凹陷
fluid inclusion
homogenization temperature
hydrocarbon charging history
upper member of Es4
Dongying Depression
