构造因素对地震剖面视频率的影响——以海拉尔盆地乌尔逊凹陷为例

THE EFFECT OF STRUCTURAL FACTOR ON APPARENT FREQUENCY ON THE SEISMIC PROFILE-AN EXAMPLE FROM WUERXUN SAG OF THE HAILAER BASIN

王雪峰 李忠权 蒙启安 朱德丰 杭文燕 陈均亮

Wang Xuefeng Li Zhongquan Meng Qi'an Zhu Defeng Hang Wenyan Chen Junliang

油气藏地质及开发工程国家重点实验室(成都理工大学), 成都, 610059 2. 大庆油田有限责任公司, 勘探开发研究院, 黑龙江, 大庆, 163712

State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu Sichuan 610059, China 2. Research Institute of Exploration and Development, Daqing Oil Field Inc, Daqing, Heilongjiang 163712, China

视频率是地震资料解释参考的重要信息。通过对海拉尔盆地乌尔逊凹陷地震剖面视频率和构造演化、构造控制沉积、构造抬升剥蚀、不同期构造作用强烈程度的关系研究,表明构造因素是影响地震剖面视频率变化的一个重要因素,主要通过控制沉积地层结构和后期对地层结构的改造两方面来影响的。视频率横向上突然变化往往反映的是断层,其纵向上的突然变化在一定程度上反映不整合面。用视频率突变面作为地震资料解释的构造不整合面,尤其是平行不整合面具有一定的理论依据。

Apparent frequency is an important information for seismic data interpretation.The analysis of the relationships between apparent frequency in the seismic profile and structural evolution,the sediment controlled by structure,denudation caused by tectonic uplift,violent degree of tectonic action in different times in the Wuerxun Sag of the Hailaer Basin,show that structural factor is one of the important factors that influence the change of apparent frequency on seismic profile.It affects the apparent frequency by controlling and reforming the sedimentary stratigraphic structure.The lateral abrupt change of apparent frequency on the seismic profile reflects faults and vertical abrupt change reflects tectonic unconformities,especially parallel unconformity based on some theories.

国家自然科学基金(40773030)

https://doi.org/10.11781/sysydz201001087