دورية أكاديمية
A 2D nonlinear inversion of well-seismic data
| العنوان: | A 2D nonlinear inversion of well-seismic data |
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| المؤلفون: | Métivier, Ludovic, Lailly, P., Delprat-Jannaud, Florence, Halpern, Laurence |
| المساهمون: | Direction Géologie-Géochimie-Géophysique, IFP Energies nouvelles (IFPEN), IFP Energies nouvelles (IFPEN)-IFP Energies nouvelles (IFPEN), Laboratoire Analyse, Géométrie et Applications (LAGA), Université Paris 8 Vincennes-Saint-Denis (UP8)-Centre National de la Recherche Scientifique (CNRS)-Institut Galilée-Université Paris 13 (UP13) |
| المصدر: | Hyper Article en Ligne - Sciences de l'Homme et de la Société ; ISSN: 0266-5611 ; EISSN: 1361-6420 ; Inverse Problems ; Inverse Problems, IOP Publishing, 2011, 27 (5), pp.055005. ⟨10.1088/0266-5611/27/5/055005⟩ |
| بيانات النشر: | HAL CCSD IOP Publishing |
| سنة النشر: | 2011 |
| مصطلحات موضوعية: | Seismic Imaging, 2D acoustic wave propagation, Adjoint-state method, domain decomposition, geo, demo |
| الوصف: | International audience Well-seismic data such as vertical seismic profiles are supposed to provide detailed information about the elastic properties of the subsurface at the vicinity of the well. Heterogeneity of sedimentary terrains can lead to far from negligible multiple scattering, one of the manifestations of the nonlinearity involved in the mapping between elastic parameters and seismic data. We present a 2D extension of an existing 1D nonlinear inversion technique in the context of acoustic wave propagation. In the case of a subsurface with gentle lateral variations, we propose a regularization technique which aims at ensuring the stability of the inversion in a context where the recorded seismic waves provide a very poor illumination of the subsurface. We deal with a huge size inverse problem. Special care has been taken for its numerical solution, regarding both the choice of the algorithms and the implementation on a cluster-based supercomputer. Our tests on synthetic data show the effectiveness of our regularization. They also show that our efforts in accounting for the nonlinearities are rewarded by an exceptional seismic resolution at distances of about 100 m from the well. They also show that the result is not very sensitive to errors in the estimation of the velocity distribution, as far as these errors remain realistic in the context of a medium with gentle lateral variations. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| العلاقة: | hal-00935643; 10670/1.b93q27; https://hal.archives-ouvertes.fr/hal-00935643Test |
| DOI: | 10.1088/0266-5611/27/5/055005 |
| الإتاحة: | https://doi.org/10.1088/0266-5611/27/5/055005Test https://hal.archives-ouvertes.fr/hal-00935643Test |
| حقوق: | undefined |
| رقم الانضمام: | edsbas.14F470DC |
| قاعدة البيانات: | BASE |
| DOI: | 10.1088/0266-5611/27/5/055005 |
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