狭长走滑断陷盆地构造对沉积—成藏的控制作用——以伊通盆地为例

Controlling effect of channel strike-slip fault basin on deposition and accumulation：a case study in Yitong Basin

江涛 邱玉超 邓校国 王辉辉 揭君晓 程利远

Jiang Tao Qiu Yuchao Deng Xiaoguo Wang Huihui Jie Junxiao Cheng Liyuan

中国石油大学(北京), 北京102249 2. 中国石油吉林油田公司, 松原138000 3. 大庆钻探工程公司测井公司, 松原138000

China University of Petroleum, Beijing 102249, China 2. Jilin Oilfield Company, PetroChina, Songyuan, Jilin 138000, China 3. Logging Company of Daqing Drilling Group, Songyuan, Jilin 138000, China

伊通盆地为郯庐断裂带北延至吉林省境内的狭长新生代断陷盆地,受郯庐断裂带构造域以及西太平洋板块构造域的共同影响,盆地经历了早期斜向伸展、中期持续走滑和后期构造反转的复杂构造演化历程,对油气成藏过程产生重要控制作用。通过分析伊通盆地构造样式、盆地演化过程,研究了构造对沉积、成藏的控制作用,揭示狭长走滑断陷盆地早期伸展走滑为烃源岩和储层的发育提供了良好条件,晚期构造挤压和反转有利于油气藏的形成。

Formed in Neozoic, the Yitong Basin is a channel strike-slip fault basin in the north of the Tancheng-Lujiang Fault Belt. It locates in Jilin province and has undergone regional structural impacts which originate from the Tancheng-Lujiang Fault Belt and the West Pacific Plate. The tectonic evolution of the basin can be divided into 3 stages including early inclined stretch, middle continuous strike slip, and late structural reversion, resulting in important controlling effects on petroleum accumulation. The influences of structure on deposition and accumulation have been studied based on the tectonic style and evolution process of the basin. It has been concluded that the early inclined stretch of the channel strike-slip fault basin is favorable for the generation of source rock and reservoir while the late structural reversion is favorable for the accumulation of oil and gas pool.

国土资源部重大专项“松辽盆地及外围上古生界油气资源战略选区”项目(2009GYXQ12-03)资助

https://doi.org/10.11781/sysydz201203267