青藏高原羌塘盆地油源及运移过程

秦建中

doi:10.11781/sysydz200605450

青藏高原羌塘盆地油源及运移过程

doi: 10.11781/sysydz200605450

秦建中

中国石油化工股份有限公司, 石油勘探开发研究院, 无锡石油地质研究所, 江苏, 无锡, 214151

基金项目: 国家重点基础研究发展规划(973计划)(2005CB422102).

详细信息

作者简介:
秦建中(1957- ),男(汉族),河北邯郸人,教授级高级工程师,主要从事石油地质和有机地球化学等领域研究工作.

中图分类号: TE122.1
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出版历程
- 收稿日期: 2005-12-23
- 修回日期: 2006-09-01
- 刊出日期: 2006-09-28

OIL SOURCE AND HYDROCARBON MIGRATION PROCESS IN QIANGTANG BASIN,QINGHAI-TIBET PLATEAU

Qin Jianzhong

Wuxi Research Institute of Petroleum Geology, SINOPEC, Wuxi, Jiangsu 214151, China

摘要

摘要: 羌塘盆地隆鄂尼西J₂b、昂达尔错J₃s、西长梁J₃s及安多114道班J₃s油苗和比洛错J₂x富烃页岩及安多114道班J₃s深灰色灰岩均具有重排甾烷含量相对较高、孕甾烷含量低、三环萜烷和γ—蜡烷含量较低、Pr/Ph较高、碳同位素相对较重的特征。隆鄂尼西J₂b及昂达尔错J₃s油苗主要来自本区J₂x潟湖相富烃源岩;安多114道班J₃s及西长梁J₃s油苗主要来自本区J₃s海相盆地内台凹相深灰色灰岩及富烃页岩。盆地中部含油白云岩及安多114道班J₃s灰质角砾岩中存在"轻质活油"和"固体沥青"。"固体沥青"是第一次油气运移聚集成古油藏的产物;发荧光的"轻质活油"则是再次埋深或构造运动所导致的第二次或第三次油气运移聚集成藏的产物,它们经历过2次(或2次以上)油气生成和运移的过程。
- 油苗 /
- 油源对比 /
- 运移过程 /
- 羌塘盆地
Abstract: The oil seepages from the formations of J₂b in West Longeni,J₃s in Angdaercuo,J₃s in West Changliang and J₃s in the area of No.114 Anduo road maintenance squad as well as the J₂x hydrocarbon-rich shale in Biluocuo and the J₃s dark-gray limestone in the area of No.114 road maintenance squad are characterized by high rearrangement sterane content,low pregnane,triclene and gammacerane contents,high ratio of Pr/Ph as well as heavy carbon-isotope.The oil seepages in the formations of J₂b in West Longeni and J₃s in Angdaercuo originate from the J₂x lagoon-phase hydrocarbon-rich source rock in their corresponding areas.The oil seepages in the formations of J₃s in the areas of No.114 Anduo road maintenance squad and West Changliang originate from the J₃s platform facies dark-gray limestone and hydrocarbon-rich shale.There are "light active oil" and "solid bitumen" in the oil-bearing dolomite in center of the basin and in the J₃s lime-rubble rock in No.114 Anduo road maintenance squad area.The solid bitumen is product of the first hydrocarbon migration and accumulation.The fluorescent light active oil is product of the second or third hydrocarbon migration and accumulation causing by reburial or tectogenesis.They have undergone two or more hydrocarbon generation and migration processes.
- oil seepage /
- correlation between oil and source /
- migration process /
- Qiangtang Basin

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参考文献(13)

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