摘要
以柴达木盆地北缘地区为例,探讨了构造运动学过程与油气藏形成的关系。研究认为柴达木盆地北缘地区中新生代板内构造体制下的盆—山耦合过程对油气藏的形成具有明显的控制作用,燕山期—喜马拉雅初期在挤压性应力场的作用下整体抬升,构造运动学过程主要以断裂来调整各个区域的应力平衡为主,由于构造位置和自身性质的差异,各个断块的隆升速度也存在差异,相对隆升较慢的断块区,逐渐发育形成压陷型断块坳陷。喜马拉雅中期构造运动使盆地周边褶皱断裂山系隆升并向盆地冲断推覆,在盆地新生代沉积层系中形成压性或压扭性褶皱和断层,为油气的运聚提供了十分有利的条件。
We discussed a few questions about the relationship between the tectonic kinematic process and the reservoir formation in northern margin of Qaidam basin.Through our research we believed that the dynamic mechanism of basin-mountain coupling system was the most important factor of the oil and gas accumulations in the Mesozoic-Cenozoic Era.The fault blocks of the northern margin of Qaidam basin were uplifted in Yanshan Period and early Himalayan Period.But the speeds were different because of their different tectonic location and nature.The fault block which uplifted slowly gradually turned into the down-warped block fault depression.Fault zones around the Qaidam basin were uplifted and thrusted into the basin in the late Himalayan Period,leading to the folding and faulting of the Cenozoic strata.But these structural characteristics were exactly conducive to hydrocarbon accumulation.
出处
《天然气地球科学》
EI
CAS
CSCD
北大核心
2012年第5期826-832,共7页
Natural Gas Geoscience
基金
国家重点基础研究发展规划("973")项目"中国西部叠合盆地深部有效碎屑岩储层成因机制与发育模式"(编号:2011CB201104)
中国科学院油气资源研究重点实验室开放基金"咸化湖盆深部优质碎屑岩储层形成机理研究"(编号:KFJJ2012-05)联合资助
关键词
圈闭类型
油气藏
构造运动
柴北缘
Types of traps
Oil and gas reservois
Ttectonic movement
Northern margin of Qaidam basin
