Pub Date : 2018-08-27DOI: 10.1190/SEGAM2018-2996295.1
V. Bacci, Jeff Tan, A. Halladay, S. O’Brien
{"title":"Microseismic activity after 2+ years of CO2 injection at Quest","authors":"V. Bacci, Jeff Tan, A. Halladay, S. O’Brien","doi":"10.1190/SEGAM2018-2996295.1","DOIUrl":"https://doi.org/10.1190/SEGAM2018-2996295.1","url":null,"abstract":"","PeriodicalId":158800,"journal":{"name":"SEG Technical Program Expanded Abstracts 2018","volume":"122 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115163634","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 : 2018-08-27DOI: 10.1190/SEGAM2018-2983521.1
O. Ogiesoba, W. Ambrose, R. Loucks
{"title":"Application of instantaneous dominant-frequency attributes and gamma-ray wireline logs in the delineation of lithology in Serbin Field, Southeast Texas: A case study","authors":"O. Ogiesoba, W. Ambrose, R. Loucks","doi":"10.1190/SEGAM2018-2983521.1","DOIUrl":"https://doi.org/10.1190/SEGAM2018-2983521.1","url":null,"abstract":"","PeriodicalId":158800,"journal":{"name":"SEG Technical Program Expanded Abstracts 2018","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115766692","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 : 2018-08-27DOI: 10.1190/SEGAM2018-2996274.1
M. Louboutin, Philipp A. Witte, F. Herrmann
In order to obtain accurate images of the subsurface, anisotropic modeling and imaging is necessary. However, the twenty-one parameter complete wave-equation is too computationally expensive to be of use in this case. The transverse tilted isotropic wave-equation is then the next best feasible representation of the physics to use for imaging. The main complexity arising from transverse tilted isotropic imaging is to model the receiver wavefield (back propagation of the data or data residual) for the imaging condition. Unlike the isotropic or the full physics wave-equations, the transverse tilted isotropic wave-equation is not not self-adjoint. This difference means that time-reversal will not model the correct receiver wavefield and this can lead to incorrect subsurface images. In this work, we derive and implement the adjoint wave-equation to demonstrate the necessity of exact adjoint modeling for anisotropic modeling and compare our result with adjoint-free time-reversed imaging.
{"title":"Effects of wrong adjoints for RTM in TTI media","authors":"M. Louboutin, Philipp A. Witte, F. Herrmann","doi":"10.1190/SEGAM2018-2996274.1","DOIUrl":"https://doi.org/10.1190/SEGAM2018-2996274.1","url":null,"abstract":"In order to obtain accurate images of the subsurface, anisotropic modeling and imaging is necessary. However, the twenty-one parameter complete wave-equation is too computationally expensive to be of use in this case. The transverse tilted isotropic wave-equation is then the next best feasible representation of the physics to use for imaging. The main complexity arising from transverse tilted isotropic imaging is to model the receiver wavefield (back propagation of the data or data residual) for the imaging condition. Unlike the isotropic or the full physics wave-equations, the transverse tilted isotropic wave-equation is not not self-adjoint. This difference means that time-reversal will not model the correct receiver wavefield and this can lead to incorrect subsurface images. In this work, we derive and implement the adjoint wave-equation to demonstrate the necessity of exact adjoint modeling for anisotropic modeling and compare our result with adjoint-free time-reversed imaging.","PeriodicalId":158800,"journal":{"name":"SEG Technical Program Expanded Abstracts 2018","volume":"193 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116784520","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 : 2018-08-27DOI: 10.1190/SEGAM2018-2997036.1
A. Pirogova, B. Gurevich, R. Pevzner, S. Vlasov
{"title":"Study of intrinsic versus scattering attenuation of seismic waves from borehole measurements","authors":"A. Pirogova, B. Gurevich, R. Pevzner, S. Vlasov","doi":"10.1190/SEGAM2018-2997036.1","DOIUrl":"https://doi.org/10.1190/SEGAM2018-2997036.1","url":null,"abstract":"","PeriodicalId":158800,"journal":{"name":"SEG Technical Program Expanded Abstracts 2018","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117057659","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 : 2018-08-27DOI: 10.1190/SEGAM2018-2995661.1
M. Porsani, B. Ursin, Michelângelo G. Silva
{"title":"Signal analysis and time-frequency representation using SSA and adaptive AR methods","authors":"M. Porsani, B. Ursin, Michelângelo G. Silva","doi":"10.1190/SEGAM2018-2995661.1","DOIUrl":"https://doi.org/10.1190/SEGAM2018-2995661.1","url":null,"abstract":"","PeriodicalId":158800,"journal":{"name":"SEG Technical Program Expanded Abstracts 2018","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120943465","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 : 2018-08-27DOI: 10.1190/SEGAM2018-2998133.1
D. Grombacher, G. Fiandaca, E. Auken
{"title":"Constraining the T2*-T2 relationship in surface nuclear magnetic resonance free-induction decay data","authors":"D. Grombacher, G. Fiandaca, E. Auken","doi":"10.1190/SEGAM2018-2998133.1","DOIUrl":"https://doi.org/10.1190/SEGAM2018-2998133.1","url":null,"abstract":"","PeriodicalId":158800,"journal":{"name":"SEG Technical Program Expanded Abstracts 2018","volume":"243 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121029380","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 : 2018-08-27DOI: 10.1190/SEGAM2018-2998601.1
C. Schwarzbach, E. Haber
{"title":"Improved upscaling of steel-cased wells through inversion","authors":"C. Schwarzbach, E. Haber","doi":"10.1190/SEGAM2018-2998601.1","DOIUrl":"https://doi.org/10.1190/SEGAM2018-2998601.1","url":null,"abstract":"","PeriodicalId":158800,"journal":{"name":"SEG Technical Program Expanded Abstracts 2018","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127367039","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 : 2018-08-27DOI: 10.1190/SEGAM2018-2998564.1
E. Ardakani, A. Baig
{"title":"Microseismic interpretation: From dots to the bigger picture","authors":"E. Ardakani, A. Baig","doi":"10.1190/SEGAM2018-2998564.1","DOIUrl":"https://doi.org/10.1190/SEGAM2018-2998564.1","url":null,"abstract":"","PeriodicalId":158800,"journal":{"name":"SEG Technical Program Expanded Abstracts 2018","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124816815","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}
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