柴达木盆地新生代波动过程及与油气关系  

Cenozoic Wave Processes and Their Relationships to Hydrocarbon in the Qaidam Basin

作　　者：金之钧[1] 李京昌[2] 汤良杰[2] 余一欣[2] 江波[3] 张明利[1] 由福报 张兵山[3] 

机构地区：[1]中国石油化工股份有限公司勘探开发研究院,北京100083 [2]中国石油大学石油天然气成藏机理教育部重点实验室 [3]青海油田研究院,甘肃敦煌736202

出　　处：《地质学报》2006年第3期359-365,共7页Acta Geologica Sinica

基　　金：国家"973"重点基础研究发展规划项目(编号G1999043300);中国石油天然气股份有限公司"九五"重点科技项目资助的成果

摘　　要：通过对柴达木盆地新生代沉积充填的地质滤波分析证明,约10Ma和约20Ma周期的波动过程是控制柴达木盆地新生代沉积和构造演化最显著的波动过程。在平面上,这两个周期波相近大小的周期大致沿近东西向和北西-南东向分布,分别反映波的传播方向为近南北向和南西-北东向。柴达木盆地新生代的这种波动过程与油气具有十分密切的关系,影响着烃源岩的热演化,并控制了生油凹陷和油气藏的分布。理论分析与勘探实践均证明,波谷带与波峰带之间的波动转换带是油气聚集成藏的有利部位。Based on wave analysis, this paper mainly concerns wave processes of Cenozoic sedimentation and sedimentary filling in the Qaidam basin. The outcomes demonstrate that the wave processes with 10±Ma and 20±Ma periods are the most obvious ones, which controlled the sedimentation and structural evolution of this area. The two periodic waves are distributed in the E-W and NW-SE directions in plane, which reflects the waves propagated in the N-S and SW-NE directions. The Cenozoic wave processes have close relationships to hydrocarbon accumulation. The wave processes have influenced the thermal evolution of source rocks and the distribution of hydrocarbon-generation sags and hydrocarbon pools. The transitional zones between wave troughs and crests are favorable for hydrocarbon migration and accumulation.

关 键 词：波动 新生代 油气成藏 柴达木盆地 

分 类 号：P546[天文地球—构造地质学] P618.13[天文地球—地质学]