摘要
流体包裹体研究在划分油气运移充注期次、确定油气藏形成时间等方面均有重要的应用价值.通过镜下观察流体包裹体的特征,划分类型,描述其特征,对与烃类共生的盐水包裹体进行均一化温度测试,并结合其他相关地质资料,认为延长探区马家沟组储层流体包裹体的均一温度集中分布在85～115℃范围内,包裹体捕获时的埋藏深度为2500～2800 m.结合盆地的埋藏史推测天然气成藏时间为晚三叠—早侏罗世.
Study of fluid inclusions is applied in the division of oil and gas migration filling period and the identification of reservoir forming time.With observation of microscopic characteristics,classification of types and description of features,the brine inclusions that associate with hydrocarbon are tested for homogenization temperature.Combining with other geological data,it is concluded that the homogenization temperature of fluid inclusions from the reservoir of Majiagou formation in Yanchang exploring area concentrates in the range of 85℃ to 115℃,with depth of 2500 m to 2800 m.In consideration of the burial history of the basin,the gas reservoir should be formed in Late Triassic to Early Jurassic era.
出处
《地质与资源》
CAS
2013年第2期125-128,共4页
Geology and Resources
关键词
流体包裹体
马家沟组
均一温度
晚三叠—早侏罗世
fluid inclusion
Majiagou formation
homogenization temperature
Late Triassic to Early Jurassic
