{"title":"通过随机相位编码策略加速与水底相关的多重地震迁移","authors":"Yanbao Zhang, Feng Hu, Yanzhi Hu","doi":"10.1111/1365-2478.13552","DOIUrl":null,"url":null,"abstract":"<p>Marine seismic multiples contain more structure information than primaries and should be considered in migrations. However, multiple migrations suffer from severe crosstalks generated by interferences among undesirable multiples. It has been proven that the water-bottom-related multiple migration can suppress crosstalks greatly. However, if all associated consecutive-order multiples are considered, the computation cost is extremely high. To settle this issue, a phase-encoding-based multiple migration is proposed. Supergathers are first created by randomly phase-encoding consecutive-order multiples and stacking-encoded multiples. By migrating supergathers, the proposed method can fulfil migrations of all order multiples simultaneously, thereby reducing the computation cost significantly. We use a three-layer model and the Pluto 1.5 model for numerical comparisons. The results reveal that the method can retrieve high-quality images and increase computation efficiency considerably.</p>","PeriodicalId":12793,"journal":{"name":"Geophysical Prospecting","volume":null,"pages":null},"PeriodicalIF":1.8000,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Seismic migration of water-bottom-related multiples accelerated by random phase-encoding strategy\",\"authors\":\"Yanbao Zhang, Feng Hu, Yanzhi Hu\",\"doi\":\"10.1111/1365-2478.13552\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Marine seismic multiples contain more structure information than primaries and should be considered in migrations. However, multiple migrations suffer from severe crosstalks generated by interferences among undesirable multiples. It has been proven that the water-bottom-related multiple migration can suppress crosstalks greatly. However, if all associated consecutive-order multiples are considered, the computation cost is extremely high. To settle this issue, a phase-encoding-based multiple migration is proposed. Supergathers are first created by randomly phase-encoding consecutive-order multiples and stacking-encoded multiples. By migrating supergathers, the proposed method can fulfil migrations of all order multiples simultaneously, thereby reducing the computation cost significantly. We use a three-layer model and the Pluto 1.5 model for numerical comparisons. The results reveal that the method can retrieve high-quality images and increase computation efficiency considerably.</p>\",\"PeriodicalId\":12793,\"journal\":{\"name\":\"Geophysical Prospecting\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.8000,\"publicationDate\":\"2024-06-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Geophysical Prospecting\",\"FirstCategoryId\":\"89\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1111/1365-2478.13552\",\"RegionNum\":3,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"GEOCHEMISTRY & GEOPHYSICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Geophysical Prospecting","FirstCategoryId":"89","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/1365-2478.13552","RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"GEOCHEMISTRY & GEOPHYSICS","Score":null,"Total":0}
Seismic migration of water-bottom-related multiples accelerated by random phase-encoding strategy
Marine seismic multiples contain more structure information than primaries and should be considered in migrations. However, multiple migrations suffer from severe crosstalks generated by interferences among undesirable multiples. It has been proven that the water-bottom-related multiple migration can suppress crosstalks greatly. However, if all associated consecutive-order multiples are considered, the computation cost is extremely high. To settle this issue, a phase-encoding-based multiple migration is proposed. Supergathers are first created by randomly phase-encoding consecutive-order multiples and stacking-encoded multiples. By migrating supergathers, the proposed method can fulfil migrations of all order multiples simultaneously, thereby reducing the computation cost significantly. We use a three-layer model and the Pluto 1.5 model for numerical comparisons. The results reveal that the method can retrieve high-quality images and increase computation efficiency considerably.
期刊介绍:
Geophysical Prospecting publishes the best in primary research on the science of geophysics as it applies to the exploration, evaluation and extraction of earth resources. Drawing heavily on contributions from researchers in the oil and mineral exploration industries, the journal has a very practical slant. Although the journal provides a valuable forum for communication among workers in these fields, it is also ideally suited to researchers in academic geophysics.