摘要
高品质海域地震资料处理是海洋油气勘探的基础。深海洋地震资料普遍含有与强能量表面相关的多次波,携带了丰富的地下反射信息。基于扩展表面多次波衰减(SRME)方法和面炮偏移技术,论文提出了一种单阶次海洋多次波成像方法。通过扩展的SRME技术,预测出不同阶次表面相关多次波,再通过不同阶次多次波单独成像的方法利用多次波信息对地下构造成像,克服了多次波同时成像时产生干涉假象的缺陷,而且相对于传统一次波成像又具有较好的信噪比和分辨率。多次波成像方法已在我国海域实际地震资料处理中成功应用,表现出了更高的照明均衡度和地层分辨能力。研究表明,海洋多次波成像技术是传统一次波成像方法的有力补充,对于稳定海底沉积的深海地区,具有广阔的应用前景。
High quality marine seismic data processing is the basis of exploration of offshore oil and gas.Surface-related multiples with strong energy are widely developed in deep ocean seismic data which bring information of the subsurface structure.Based on extended surface related multiple elimination(SRME)and area shot technique,in this paper,we proposed migration of different order surface related multiples.Different order surface related multiples were separated by extended SRME technique,and then were used for migration.Advantages of the proposed method were overcoming the artifacts and higher S/N ratio and resolution.Successful application in real data proved its balanced illumination and structure identification.Migration of multiples is a good supplementary to migration of primaries for the area with stable sea bottom and has potential value in marine data processing.
作者
叶月明
范国章
李林
李立胜
周振
YE Yueming;FAN Guozhang;LI Lin;LI Lisheng;ZHOU Zhen(Petro China Hangzhou Research Institute of Geology,Hangzhou 310023,China)
出处
《中国造船》
EI
CSCD
北大核心
2019年第4期222-228,共7页
Shipbuilding of China
关键词
深海勘探
多次波成像
叠前深度偏移
偏移假象
多次波分离
deep marine exploration
migration of multiples
prestack depth migration
migration artifacts
separation of multiples
