Pub Date : 2020-09-30DOI: 10.1190/SEGAM2020-3427692.1
Chao Ma, M. Guo, Zhaojun Liu, J. Sheng
Imaging artifacts caused by strong internal multiples can interfere with primary images, affecting structural interpretation and amplitude analysis. In such cases, internal multiples are often attenuated in either data domain or in the image domain. In this abstract, we study three data-driven approaches: Jakubowicz, Inverse Scattering Series (ISS) and Marchenko for internal-multiple removal and analyze their performances. Each method has its unique advantages due to the differences among them. This knowledge, in turn, helps users to choose the appropriate method. Following the analysis, we show field data applications of these methods on towed steamer data.
{"title":"Analysis and application of data-driven approaches for internal-multiple elimination","authors":"Chao Ma, M. Guo, Zhaojun Liu, J. Sheng","doi":"10.1190/SEGAM2020-3427692.1","DOIUrl":"https://doi.org/10.1190/SEGAM2020-3427692.1","url":null,"abstract":"Imaging artifacts caused by strong internal multiples can interfere with primary images, affecting structural interpretation and amplitude analysis. In such cases, internal multiples are often attenuated in either data domain or in the image domain. In this abstract, we study three data-driven approaches: Jakubowicz, Inverse Scattering Series (ISS) and Marchenko for internal-multiple removal and analyze their performances. Each method has its unique advantages due to the differences among them. This knowledge, in turn, helps users to choose the appropriate method. Following the analysis, we show field data applications of these methods on towed steamer data.","PeriodicalId":117371,"journal":{"name":"Seg Technical Program Expanded Abstracts","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126449638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-30DOI: 10.1190/SEGAM2020-3415458.1
Yongzhen Ji, Huafeng Hu, Zhengliang Lin, Kefei Zhang, Han Zhong
{"title":"The preconditioned ARD-based AVA inversion method for P-impedance and S-impedance","authors":"Yongzhen Ji, Huafeng Hu, Zhengliang Lin, Kefei Zhang, Han Zhong","doi":"10.1190/SEGAM2020-3415458.1","DOIUrl":"https://doi.org/10.1190/SEGAM2020-3415458.1","url":null,"abstract":"","PeriodicalId":117371,"journal":{"name":"Seg Technical Program Expanded Abstracts","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128079942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-30DOI: 10.1190/SEGAM2020-3426706.1
A. Vesnaver, G. Böhm, P. Cance, J. Carcione, D. Gei, J. Ba
{"title":"Time-lapse Q-factor tomography by reflected waves’ inversion","authors":"A. Vesnaver, G. Böhm, P. Cance, J. Carcione, D. Gei, J. Ba","doi":"10.1190/SEGAM2020-3426706.1","DOIUrl":"https://doi.org/10.1190/SEGAM2020-3426706.1","url":null,"abstract":"","PeriodicalId":117371,"journal":{"name":"Seg Technical Program Expanded Abstracts","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125459019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-30DOI: 10.1190/SEGAM2020-3421450.1
Chao Song, T. Alkhalifah
Full-waveform inversion (FWI) requires either a good initial velocity model or low-frequency data to mitigate the cycleskipping issue. Reflection-waveform inversion (RWI) uses a migration/demigration process to retrieve a background model that can be used as a good initial velocity in FWI. The drawback of the conventional RWI is that it requires the use of a least-squares migration, which is often computationally expensive. Efficient wavefield inversion (EWI) is a recently developed method from wavefield reconstruction inversion (WRI). EWI uses a modified source function to introduce the multiscattering components in the reconstructed wavefield. However, when the initial velocity is far from the true one, the wavefield can not be accurately reconstructed. We incorporate the RWI formulation into EWI by inverting for the Born scattered wavefield instead of the wavefield itself. In this case, we use the perturbation related to secondary sources as a modified source function. As the sources in the reflection-based EWI (REWI) are located in the subsurface, we are able to update the background model along the reflection wave path. We calculate the background model perturbation by a deconvolution process in each frequency like what is done in the original EWI. We demonstrate the validity of the proposed approach using synthetic data generated for the Marmousi model.
{"title":"A reflection-based efficient wavefield inversion to retrieve a good initial background velocity","authors":"Chao Song, T. Alkhalifah","doi":"10.1190/SEGAM2020-3421450.1","DOIUrl":"https://doi.org/10.1190/SEGAM2020-3421450.1","url":null,"abstract":"Full-waveform inversion (FWI) requires either a good initial velocity model or low-frequency data to mitigate the cycleskipping issue. Reflection-waveform inversion (RWI) uses a migration/demigration process to retrieve a background model that can be used as a good initial velocity in FWI. The drawback of the conventional RWI is that it requires the use of a least-squares migration, which is often computationally expensive. Efficient wavefield inversion (EWI) is a recently developed method from wavefield reconstruction inversion (WRI). EWI uses a modified source function to introduce the multiscattering components in the reconstructed wavefield. However, when the initial velocity is far from the true one, the wavefield can not be accurately reconstructed. We incorporate the RWI formulation into EWI by inverting for the Born scattered wavefield instead of the wavefield itself. In this case, we use the perturbation related to secondary sources as a modified source function. As the sources in the reflection-based EWI (REWI) are located in the subsurface, we are able to update the background model along the reflection wave path. We calculate the background model perturbation by a deconvolution process in each frequency like what is done in the original EWI. We demonstrate the validity of the proposed approach using synthetic data generated for the Marmousi model.","PeriodicalId":117371,"journal":{"name":"Seg Technical Program Expanded Abstracts","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122258863","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-30DOI: 10.1190/SEGAM2020-3427291.1
Q. Su, H. Zeng, H. Meng, S. Qie, Xiaomei Zhang, Huan Liu
{"title":"Application of HTI anisotropy correction for wide-azimuth seismic data: A case study of tight gas exploration in Sichuan Basin, China","authors":"Q. Su, H. Zeng, H. Meng, S. Qie, Xiaomei Zhang, Huan Liu","doi":"10.1190/SEGAM2020-3427291.1","DOIUrl":"https://doi.org/10.1190/SEGAM2020-3427291.1","url":null,"abstract":"","PeriodicalId":117371,"journal":{"name":"Seg Technical Program Expanded Abstracts","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121444594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-30DOI: 10.1190/SEGAM2020-3410422.1
G. Erokhin, Vitaliy M. Bryksin
{"title":"High-resolution velocity model estimation by the RTH method","authors":"G. Erokhin, Vitaliy M. Bryksin","doi":"10.1190/SEGAM2020-3410422.1","DOIUrl":"https://doi.org/10.1190/SEGAM2020-3410422.1","url":null,"abstract":"","PeriodicalId":117371,"journal":{"name":"Seg Technical Program Expanded Abstracts","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131338414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-30DOI: 10.1190/SEGAM2020-3419221.1
Jaewook Lee, D. Lumley, Un Young Lim
{"title":"Improving TOC estimation for Wolfcamp shales using statistical shale rock physics modeling","authors":"Jaewook Lee, D. Lumley, Un Young Lim","doi":"10.1190/SEGAM2020-3419221.1","DOIUrl":"https://doi.org/10.1190/SEGAM2020-3419221.1","url":null,"abstract":"","PeriodicalId":117371,"journal":{"name":"Seg Technical Program Expanded Abstracts","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131957879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-30DOI: 10.1190/SEGAM2020-3427558.1
E. Nilot, Y. Li, K. Lythgoe
The city-state of Singapore principally sits on granite bedrock known as the Bukit Timah formation. The Bukit Timah granite outcrops in the centre of Singapore, but it is buried below quaternary sediments known as the Old Alluvium formation in the east and north. Bedrock depth and faults in the shallow surface influence the stability of structures built above it, while the depth to bedrock constrains the water storage capacity and sub-soil water movement. Seismic methods are needed to image bedrock depth, however explosive methods are forbidden in the densely populated urban environment of Singapore. Passive seismic based on seismic interferometry is nondestructive and can provide us estimated detection depth. We apply the passive surface wave method based on seismic interferometry to the whole of Singapore island using a 1 month deployment of short-period nodes, to obtain the 3D velocity structure. We also obtain more detailed information in the Old Alluvium sediments by applying the MASW (multi-channel analysis of surface waves) method to linear geophone arrays. By analyzing the results from both tomography and MASW, we show that the granite bedrock beneath the Old Alluvium sediments is deeper than existing geological model suggests, which potentially increases the storage volume for fresh water in the deep underground acquifer.
{"title":"Bedrock detection based on seismic interferometry using ambient noise in Singapore","authors":"E. Nilot, Y. Li, K. Lythgoe","doi":"10.1190/SEGAM2020-3427558.1","DOIUrl":"https://doi.org/10.1190/SEGAM2020-3427558.1","url":null,"abstract":"The city-state of Singapore principally sits on granite bedrock known as the Bukit Timah formation. The Bukit Timah granite outcrops in the centre of Singapore, but it is buried below quaternary sediments known as the Old Alluvium formation in the east and north. Bedrock depth and faults in the shallow surface influence the stability of structures built above it, while the depth to bedrock constrains the water storage capacity and sub-soil water movement. Seismic methods are needed to image bedrock depth, however explosive methods are forbidden in the densely populated urban environment of Singapore. Passive seismic based on seismic interferometry is nondestructive and can provide us estimated detection depth. We apply the passive surface wave method based on seismic interferometry to the whole of Singapore island using a 1 month deployment of short-period nodes, to obtain the 3D velocity structure. We also obtain more detailed information in the Old Alluvium sediments by applying the MASW (multi-channel analysis of surface waves) method to linear geophone arrays. By analyzing the results from both tomography and MASW, we show that the granite bedrock beneath the Old Alluvium sediments is deeper than existing geological model suggests, which potentially increases the storage volume for fresh water in the deep underground acquifer.","PeriodicalId":117371,"journal":{"name":"Seg Technical Program Expanded Abstracts","volume":"239 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132379225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-30DOI: 10.1190/SEGAM2020-3424142.1
V. Lisitsa, T. Khachkova, Y. Bazaikin
{"title":"Use of computational topology to quantify changes in pore space due to chemical dissolution of core matrix: A numerical study","authors":"V. Lisitsa, T. Khachkova, Y. Bazaikin","doi":"10.1190/SEGAM2020-3424142.1","DOIUrl":"https://doi.org/10.1190/SEGAM2020-3424142.1","url":null,"abstract":"","PeriodicalId":117371,"journal":{"name":"Seg Technical Program Expanded Abstracts","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132458345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：