摘要
根据花土沟油田新近系油藏中储层流体包裹体的类型、显微荧光特征和热力学特征,将储层中烃类的注入划分为低温低盐度和高温高盐度两期。结合埋藏史和热演化史研究表明,第一期烃类注入发生在上新世中期,主要是少量低熟烃类的注入;第二期烃类注入为大规模油气的注入,发生在上新世晚期,是现今油藏中烃类的主要来源。这一成藏过程经历时间短,是一种快速、高效的成藏方式。
Through analyzing the main types,micro-fluorescence and thermodynamic characteristics of fluid inclusions in the Neogene reservoir of Huatugou Oilfield,the process of fluid filling into reservoirs could be divided into two stages including low-temperature and low-salinity fluid,high-temperature and high-salinity fluid.The study on the burial history and thermal history showed that hydrocarbon filling in the first stage was mainly a trace amount of immature hydrocarbon and happened at the middle Pliocene Epoch.The hydrocarbon filling in the second stage was a large scale filling of oil and gas and happened in the late Pliocene Epoch.The second episodic petroleum accumulation process lasted a short time and could be a fast and efficient petroleum-charging model.
出处
《石油学报》
EI
CAS
CSCD
北大核心
2010年第1期31-35,共5页
Acta Petrolei Sinica
基金
国家自然科学基金青年项目(No.40802027)
中国石油天然气股份有限公司风险创新基金项目(0706d01040102)
教育部重点实验室开放基金联合资助
关键词
新近系油藏
成藏特征
流体包裹体
油气充注
花土沟油田
柴达木盆地
Neogene reservoir
hydrocarbon accumulation characteristics
fluid inclusions
hydrocarbon filling
Huatugou Oilfield
Qaidam Basin
