柴达木盆地花土沟油田新近系油藏成藏特征  

Hydrocarbon accumulation characteristics of the Neogene reservoirs in Huatugou Oilfield of Qaidam Basin

作　　者：许浩[1] 张君峰 汤达祯[1] 尹微[3] 张文忠[4] 陈晓智[1] 

机构地区：[1]中国地质大学海相储层演化与油气富集机理教育部重点实验室,北京100083 [2]中国石油勘探与生产分公司,北京100724 [3]中国石油勘探开发研究院,北京100083 [4]中联煤层气有限责任公司,北京100011

出　　处：《石油学报》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

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.

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 

分 类 号：TE112.3[石油与天然气工程—油气勘探]