发布求助
文献互助 智能选刊 最新文献

Second EAGE/PESGB Workshop on Velocities最新文献

筛选
英文 中文
Technology Advances in Constructing High Resolution Velocity and Absorption Models over 35,000km2 in the North Sea 北海35000平方公里高分辨率速度和吸收模型的构建技术进展
Second EAGE/PESGB Workshop on Velocities Pub Date : 2019-04-04 DOI: 10.3997/2214-4609.201900045
V. Angelov, C. Purcell, T. Latter, A. Ratcliffe
{"title":"Technology Advances in Constructing High Resolution Velocity and Absorption Models over 35,000km2 in the North Sea","authors":"V. Angelov, C. Purcell, T. Latter, A. Ratcliffe","doi":"10.3997/2214-4609.201900045","DOIUrl":"https://doi.org/10.3997/2214-4609.201900045","url":null,"abstract":"Summary Building very large scale depth velocity models for imaging and interpretation purposes is a challenging task that pushes the boundaries of software and hardware processing capabilities ( Gabrielli et al., 2016 ). Here we demonstrate a model build over what we believe is one of the largest areas ever published (~35,000 km2), highlighting the application of high-end technology, with an attention to detail and a delivery schedule that just a few years ago would have only been possible on a small scale survey. We also examine how integrating large amounts of carefully selected and pre-processed well and stratigraphic data benefits the model building process.","PeriodicalId":350524,"journal":{"name":"Second EAGE/PESGB Workshop on Velocities","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126426190","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}
引用次数: 0
Seismic Waveform Inversion Using an Iterative Ensemble Kalman Smoother 基于迭代集合卡尔曼平滑的地震波形反演
Second EAGE/PESGB Workshop on Velocities Pub Date : 2019-04-04 DOI: 10.3997/2214-4609.201900038
M. Gineste, J. Eidsvik, Y. Zheng
{"title":"Seismic Waveform Inversion Using an Iterative Ensemble Kalman Smoother","authors":"M. Gineste, J. Eidsvik, Y. Zheng","doi":"10.3997/2214-4609.201900038","DOIUrl":"https://doi.org/10.3997/2214-4609.201900038","url":null,"abstract":"Summary The seismic inverse problem is considered in a Bayesian framework and uses a sequential filtering approach to invert for elastic parameters. The method employs an iterative ensemble smoother to estimate the subsurface parameters and from the ensemble, an estimation uncertainty can be extracted. The sequential filtering conditions over partitions of the entire data record in order to drive the estimation process in a top-down manner and regularize the inversion process. The method is presented with a synthetic example using seismic shot record for a 1D medium.","PeriodicalId":350524,"journal":{"name":"Second EAGE/PESGB Workshop on Velocities","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128137818","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}
引用次数: 1
Deep Updates - Challenges and Solutions for FWI 深度更新- FWI的挑战和解决方案
Second EAGE/PESGB Workshop on Velocities Pub Date : 2019-04-04 DOI: 10.3997/2214-4609.201900056
N. Chemingui, A. Valenciano, T. Martin
{"title":"Deep Updates - Challenges and Solutions for FWI","authors":"N. Chemingui, A. Valenciano, T. Martin","doi":"10.3997/2214-4609.201900056","DOIUrl":"https://doi.org/10.3997/2214-4609.201900056","url":null,"abstract":"Conventional velocity model building (VMB) in complex regimes, such as intra and subsalt data, requires time-consuming manual intervention. It is a process that can produce unreliable models, leading to an increase in uncertainty for subsalt lead evaluation. We demonstrate an application of Full Waveform Inversion (FWI) to refine legacy velocity models generated by conventional VMB. We present our solution on a simultaneous long-offsets (SLO) dataset from the Gulf of Mexico, acquired with dual-sensor streamers, which provided low-frequency rich data. The SLO configuration recorded data with 16 km of offset, enabling both refractions and reflections to update the deeper parts of the velocity model. We employ an FWI velocity gradient that eliminates the migration isochrones. This provides support for the intra and subsalt model updates by removing the reflectivity imprint from the updated models. The FWI application successfully refined the geometry of the salt bodies including the base salt and the intrasalt enclosures. RTM images show a marked uplift, particularly for both the salt flanks and subsalt reflectors.","PeriodicalId":350524,"journal":{"name":"Second EAGE/PESGB Workshop on Velocities","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122657106","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}
引用次数: 0
Wavefront Tomography for Passive Seismic Data 被动地震资料的波前层析成像
Second EAGE/PESGB Workshop on Velocities Pub Date : 2019-04-04 DOI: 10.3997/2214-4609.201900041
L. Diekmann, B. Schwarz, A. Bauer, D. Gajewski
{"title":"Wavefront Tomography for Passive Seismic Data","authors":"L. Diekmann, B. Schwarz, A. Bauer, D. Gajewski","doi":"10.3997/2214-4609.201900041","DOIUrl":"https://doi.org/10.3997/2214-4609.201900041","url":null,"abstract":"Summary We propose a workflow for velocity model building based on passive seismic data. The under-lying tomographic inversion makes use of the slopes and curvatures of the recorded wavefield and inverts for velocities, source locations and source excitation times simultaneously. Owing to the intrinsic robustness of coherence analysis, which constitutes the initial step of the method, our approach can deal with high levels of noise and sparse data. It does not require detailed a priori information and represents an adequate tool for retrieving an initial estimate of the over-burden velocities and, considering the passive events, the respective source locations.","PeriodicalId":350524,"journal":{"name":"Second EAGE/PESGB Workshop on Velocities","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123692634","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}
引用次数: 0
Using Full-waveform Inversion to Build Model from Shallow to Deep: A Case Study in Black Sea 利用全波形反演建立从浅到深的模型——以黑海为例
Second EAGE/PESGB Workshop on Velocities Pub Date : 2019-04-04 DOI: 10.3997/2214-4609.201900031
S. Chen, A. Davydov, S. Roy
{"title":"Using Full-waveform Inversion to Build Model from Shallow to Deep: A Case Study in Black Sea","authors":"S. Chen, A. Davydov, S. Roy","doi":"10.3997/2214-4609.201900031","DOIUrl":"https://doi.org/10.3997/2214-4609.201900031","url":null,"abstract":"Summary Full Wave Inversion (FWI) has been successfully applied in the oil and gas industry as a high-end tool for high-resolution and complex model building. Conventional FWI commonly utilizes diving and refracted waves to update the low-wavenumber background components of the model, however, the update is usually depth limited by the acquisition offset. We present a case study from the Black Sea Khan Kubrat area to demonstrate an optimized workflow using conventional FWI followed by reflection-based FWI to update the velocity model from shallow to deep.","PeriodicalId":350524,"journal":{"name":"Second EAGE/PESGB Workshop on Velocities","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121416116","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}
引用次数: 0
A FWI Velocity Model Building Workflow across the Senja Ridge in the Norwegian Barents Sea 挪威巴伦支海Senja Ridge的FWI速度模型构建工作流程
Second EAGE/PESGB Workshop on Velocities Pub Date : 2019-04-04 DOI: 10.3997/2214-4609.201900030
S. Stokes, D. Manns, M. Romanenko, B. Kjølhamar, R. Myklebust, E. Henden
{"title":"A FWI Velocity Model Building Workflow across the Senja Ridge in the Norwegian Barents Sea","authors":"S. Stokes, D. Manns, M. Romanenko, B. Kjølhamar, R. Myklebust, E. Henden","doi":"10.3997/2214-4609.201900030","DOIUrl":"https://doi.org/10.3997/2214-4609.201900030","url":null,"abstract":"Summary The Senja Ridge is a structurally complex high located in the western margin of the Norwegian Barents Sea. A two stage velocity model building approach is implemented, utilising diving wave FWI and high resolution image guided tomography. Shallow gas clouds and shallow channels are resolved with the FWI updates, deeper structures including basement horsts within the Senja Ridge and the flanks of salt diapirs are solved with the tomographic updates.","PeriodicalId":350524,"journal":{"name":"Second EAGE/PESGB Workshop on Velocities","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124004615","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}
引用次数: 0
Hybrid Tomography and Full Waveform Inversion Velocity Model Updating for Shallow Velocity Anomalies 浅层速度异常的混合层析和全波形反演速度模型更新
Second EAGE/PESGB Workshop on Velocities Pub Date : 2019-04-04 DOI: 10.3997/2214-4609.201900033
G. Hilburn, J. Mao, J. Sheng, S. Baldock, M. Hart
{"title":"Hybrid Tomography and Full Waveform Inversion Velocity Model Updating for Shallow Velocity Anomalies","authors":"G. Hilburn, J. Mao, J. Sheng, S. Baldock, M. Hart","doi":"10.3997/2214-4609.201900033","DOIUrl":"https://doi.org/10.3997/2214-4609.201900033","url":null,"abstract":"Summary Geologically reasonable, data-driven velocity model building is a critical process for seismic imaging, particularly when the velocity is strongly heterogeneous within a layer or structure. When such features are prominent in the shallow, disruption of the signal may propagate through a significant portion of the image. A hybrid tomography-FWI workflow incorporating image-guided tomography and phase-only reflection full-waveform inversion is proposed as a method for generating robust and detailed model updates in these situations. Application to a narrow azimuth streamer survey demonstrates the effectiveness of the method in yielding detailed model updates and simplified geological structures in the final image.","PeriodicalId":350524,"journal":{"name":"Second EAGE/PESGB Workshop on Velocities","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114593520","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}
引用次数: 0
Should We Move towards Multi-parameter Elastic Inversions? 我们应该走向多参数弹性反演吗?
Second EAGE/PESGB Workshop on Velocities Pub Date : 2019-04-04 DOI: 10.3997/2214-4609.201900047
R. Plessix
{"title":"Should We Move towards Multi-parameter Elastic Inversions?","authors":"R. Plessix","doi":"10.3997/2214-4609.201900047","DOIUrl":"https://doi.org/10.3997/2214-4609.201900047","url":null,"abstract":"Summary In its standard least-square formulation, full waveform inversion aims at matching both the phases and the amplitudes of the recorded events. The dynamics of the seismic waves, especially of the reflection waves are of elastic nature. Moreover, earth parameter variations inside the first Fresnel zone induce interference patterns that may also be of elastic nature according to the diffraction theory. Since the Fresnel zone is inversely proportional to the square root of frequency, these interferences occur more at low frequencies. To account for this phenomenon, we may consider a more precise physics to describe the diffraction effects. During this presentation, I shall discuss multi-parameter inversion under the viscous acoustic and the elastic assumption to discuss the need to account for more precise physics.","PeriodicalId":350524,"journal":{"name":"Second EAGE/PESGB Workshop on Velocities","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124796570","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}
引用次数: 1
Using Joint Lithology-Elastic Inversion to Enhance Earth Model Building Workflows 利用岩性-弹性联合反演提高地球模型构建工作流程
Second EAGE/PESGB Workshop on Velocities Pub Date : 2019-04-04 DOI: 10.3997/2214-4609.201900044
T. Barling, R. Bachrach, C. Leone, S. Chen
{"title":"Using Joint Lithology-Elastic Inversion to Enhance Earth Model Building Workflows","authors":"T. Barling, R. Bachrach, C. Leone, S. Chen","doi":"10.3997/2214-4609.201900044","DOIUrl":"https://doi.org/10.3997/2214-4609.201900044","url":null,"abstract":"Summary Constraints can be imposed to a velocity model by rock physics modelling to capture key geological processes that shaped the present-day response of the subsurface. Lithology-dependent compaction trends can provide useful information on the expected range of velocities at different depths. The ability to model those compaction trends and to jointly estimate lithologies and velocities from seismic amplitudes with fully data-driven inversion approaches means that seismic reservoir characterization workflows can be incorporated in the earth model building process to improve imaging velocities. In this North Sea example, we demonstrate how litho-elastic inversion results, which use reflection amplitude- and lithology-driven compaction modelling, are used to update and provide initial low-frequency P- and S-wave velocity models for seismic imaging. The results revealed uplift in the P- and S-wave velocity model, stacked images, and gathers when the low-wavenumber velocities from joint litho-elastic inversion are incorporated into the earth model building workflow. The improvements of the earth model building workflow increase the likelihood of faster and more accurate convergence of subsequent tomographic iterations.","PeriodicalId":350524,"journal":{"name":"Second EAGE/PESGB Workshop on Velocities","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129328068","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}
引用次数: 3
Dual-azimuth Depth Imaging of Marine Surveys over Fenja Field Fenja海域海洋测量的双方位深度成像
Second EAGE/PESGB Workshop on Velocities Pub Date : 2019-04-04 DOI: 10.3997/2214-4609.201900055
O. Litvyakova, A. Sakharov, A. Welbon, A. Bodrov, A. Korolev, B. Esinov, Ø. Bø
{"title":"Dual-azimuth Depth Imaging of Marine Surveys over Fenja Field","authors":"O. Litvyakova, A. Sakharov, A. Welbon, A. Bodrov, A. Korolev, B. Esinov, Ø. Bø","doi":"10.3997/2214-4609.201900055","DOIUrl":"https://doi.org/10.3997/2214-4609.201900055","url":null,"abstract":"Two datasets with different marine acquisition parameters are available for this project – a conventional PGS survey from 2007 and a Geo-streamer PGS survey from 2015. They both have different shooting directions. Both surveys have been previously pre-processed using a conventional processing sequence. Although the quality of the surveys is good, improvement would be expected from the combination of the two surveys.","PeriodicalId":350524,"journal":{"name":"Second EAGE/PESGB Workshop on Velocities","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129368154","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}
引用次数: 0
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信