【作者】 孙敏卓； 张鹏； 周莉； 刘海珍； 李国艳； 陈建州； 谭和勇； 房嬛； 王国仓；

【Author】 SUN Min-zhuo;ZHANG Peng;ZHOU Li;LIU Hai-zhen;LI Guo-yan;CHEN Jian-zhou;TAN He-yong;FANG Xuan;WANG Guo-cang;Key Laboratory of Petroleum Resources,Gansu Province,Key Laboratory of Petroleum Resources Research,Institute of Geology and Geophysics,Chinese Academy of Sciences;PetroChina Qinhai Oilfield Research Institute of Exploration & Development;The Fourth Institute Geologica and Mineral Survey of Qinghai;Henan Institute of Geological Survey;

【机构】 甘肃省油气资源研究重点实验室/中国科学院油气资源研究重点实验室； 中国石油青海油田勘探开发研究院； 青海省第四地质矿产勘查院； 河南省地质调查院；

【摘要】 通过对苏探1井(2 536.5~2 697.0m)储层流体包裹体分析,结合该段原油的生物标志化合物特征,对其油藏的形成进行了研究。结果表明:苏探1井(2 536.5~2 697.0m)原油的演化程度较高;其母质类型主要为陆源高等植物,其中在埋藏深度为2 620.67m、3 640.57m和2 697m的原油中有过母质来源为水生生物的原油充注;形成于淡到微咸水的弱氧化到偏氧化环境。苏探1井(2 536.5~2 697.0m)储层至少发生过3期不同成熟度的原油充注,以及一期天然气充注;该段储层为2期成藏,第一期成藏时间为142Ma左右,第二期成藏时间为107Ma左右,为早白垩世晚期燕山运动的构造回返期。更多还原

【Abstract】 According to some geological and geochemical data of well Sutan 1of depth from 2 536.5mto2 697.0m,including the homogenization temperature of fluid inclusion and the geochemical characteristics of crude oil,the hydrocarbon accumulation history of the studied region was analyzed.The result shows that the crude oil has the properties of high evolution degree with well Sutan 1.The precursor type is mainly high terrestrial plants.Among them three crude oils from depth of 2 620.67 m,3 640.57 mand 2 697 m have been charged with crude oil with aquatic organism.And the crude oil has deposited in weak oxidizing to oxidizing environment with fresh to slight saline water,which is better for preservation and transformation of organics.The characteristics of fluid inclusion with well Sutan 1show that there are at least three times of filling of oil and one time of filling of gas.And two periods of petroleum accumulation existed in the crude oil of well Sutan 1.The reservoir forming time of the first charge with oil is about 142 Ma.The reservoir forming time of the second charge with oil is about 107 Ma,which is tectonic inversion of the Yanshanian orogenic movement in Late-Early Cretaceous.更多还原