非重复时移地震叠前互约束技术研究与应用  

The study and application of pre-stack multi-constraint technique in inconsistent time-lapse seismic processing

作　　者：陈新荣[1] 徐辉[1] 傅金荣[1] 

机构地区：[1]胜利油田分公司物探研究院,山东东营257022

出　　处：《油气地球物理》2014年第4期36-39,共4页Petroleum Geophysics

基　　金：国家863计划(2011AA060303)资助课题

摘　　要：油气开采造成的地震响应差异较弱,而时移地震资料的非重复性或不一致性造成的地震响应差异较大,致使淹没由油藏特征变化产生的弱的真实时移响应。非重复采集引起的对油藏变化无关的地震响应差异主要体现在时延、能量、相位及频率4个方面,为了得到真正的油气藏时移变化响应,对非重复采集两期地震资料进行了观测系统、能量、相位及频率等关键环节的叠前一致性及互约束处理,有效解决了非重复采集时移地震资料因非油藏因素引起的地震资料差异,为后续时移地震属性分析及剩余油的落实奠定了良好基础。The seismic response difference caused by the inconsistency of time-lapse seismic data is much stronger than that caused by the oil and gas production, by which the weak real time shift responses caused by the changes of the reservoir characteristics could be covered. The seismic response difference caused by the inconsistent seismic and which is out of relation to the changes of the reservoir mainly reflect the time-lapse, power, phase and frequency. To obtain the real time shift change responses of the reservoir, the recording geometries, power, phases and frequencies of the inconsistent seismic data acquired in two stages are processed by the prestack inconsistency and mutual-constraint, the seismic response difference caused by the factors of the nonreservoir in the inconsistent acquired time shift seismic data, which laid a good foundation for the subsequent attribute analysis and residual oil prediction.

关 键 词：非重复采集 时移地震 属性差异 叠前互约束 差异响应 

分 类 号：P631.429[天文地球—地质矿产勘探]