逆时叠前深度偏移在复杂构造带勘探中的应用  

APPLICATION OF THE REVERSE-TIME PRESTACK DEPTH MIGRATION IN THE EXPLORATION OF THE COMPLEX TECTONIC BELT

作　　者：王江[1] 邓海[1] 卢伟[1] 李婷婷[1] 李国福[1] 

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《大庆石油地质与开发》2015年第6期118-122,共5页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家自然科学基金重点项目(41030426)

摘　　要：海拉尔盆地贝尔断陷构造复杂、断裂发育,储层横向变化非均质性强。针对复杂断块构造成像困难的问题,从逆时深度偏移的原理和实现过程入手,分析了精细速度地质建模及偏移孔径、偏移频率对复杂构造成像效果的影响程度,给出了贝尔断陷贝中复杂构造带三维地震资料逆时叠前深度偏移处理结果。叠前时间偏移与逆时深度偏移资料的对比结果表明,逆时深度偏移技术能够满足构造精细解释和勘探生产的地质需求。Beier Rift in Hailer Basin is characterized by the complex structures, well-developed faults and strong lateral variations and heterogeneity for the reservoirs. In the light of the imaging issues of the complex faulted blocks, from the viewpoints of the principle of reverse-time depth migration and implementation process, the geolog- ical modeling of the fine velocity, influences of the migration aperture and frequency offset on the complex structural imaging are analyzed, the reverse-time prestack depth migration results of the inverse-time 3D seismic data of Be- izhong complex belts in Beier Rift are presented. The comparison results between the prestack time migration and reverse-time depth migration data show that reverse-time depth migration technique can meet the geological require- ments of the structural fine interpretation and exploration-development.

关 键 词：贝尔断陷 井控速度建模 复杂断块构造成像 逆时叠前深度偏移 

分 类 号：P631[天文地球—地质矿产勘探]