9 th SBGf Conference, Salvador 2005 Boelsen & Mann Common-Reflection-Surface stack for OBS and Introduction VSP geometries and multi-component seismic Traveltime formulas General case reflection data OBS and VSP Multi-component data General idea Tim Boelsen 1 and Jürgen Mann Paraxial rays Implementation Data examples 1 now: Chevron Upstream Europe, Aberdeen, Scotland, UK OBS data, 1-C Land data, 2-C Wave Inversion Technology (WIT) Consortium Conclusion & Outlook Geophysical Institute, University of Karlsruhe (TH) Acknowledgments Related talks September 14, 2005 W I T
9 th SBGf Conference, Overview Salvador 2005 Boelsen & Mann Introduction Introduction Traveltime formulas Traveltime formulas General case General case: arbitrary acquisition geometry OBS and VSP OBS and VSP geometries Multi-component data General idea Paraxial rays Multi-component data Implementation General idea Data examples Paraxial rays OBS data, 1-C Land data, 2-C Conclusion & Outlook Implementation Acknowledgments Synthetic data examples Related talks Complex OBS data, single-component Simple land data, multi-component Conclusion & Outlook W I T Acknowledgments
9 th SBGf Conference, Introduction Salvador 2005 Boelsen & Mann “Conventional” CRS stack: Introduction ◮ zero-offset simulation Traveltime formulas General case ◮ normal central rays OBS and VSP ➥ coinciding up- and downgoing ray branches Multi-component data General idea ➥ no converted waves Paraxial rays Implementation ◮ description in terms of normal and NIP waves Data examples OBS data, 1-C Land data, 2-C Finite-offset CRS stack: Conclusion & Outlook ◮ arbitrary source/receiver offsets Acknowledgments Related talks ◮ arbitrary central rays ➥ different up- and downgoing ray branches ➥ handling of converted waves ➥ arbitrary acquisition geometries W I T ◮ description in terms of two-way experiments
9 th SBGf Conference, Introduction Salvador 2005 Boelsen & Mann “Conventional” CRS stack: Introduction ◮ zero-offset simulation Traveltime formulas General case ◮ normal central rays OBS and VSP ➥ coinciding up- and downgoing ray branches Multi-component data General idea ➥ no converted waves Paraxial rays Implementation ◮ description in terms of normal and NIP waves Data examples OBS data, 1-C Land data, 2-C Finite-offset CRS stack: Conclusion & Outlook ◮ arbitrary source/receiver offsets Acknowledgments Related talks ◮ arbitrary central rays ➥ different up- and downgoing ray branches ➥ handling of converted waves ➥ arbitrary acquisition geometries W I T ◮ description in terms of two-way experiments
9 th SBGf Conference, Introduction Salvador 2005 Boelsen & Mann “Conventional” CRS stack: Introduction ◮ zero-offset simulation Traveltime formulas General case ◮ normal central rays OBS and VSP ➥ coinciding up- and downgoing ray branches Multi-component data General idea ➥ no converted waves Paraxial rays Implementation ◮ description in terms of normal and NIP waves Data examples OBS data, 1-C Land data, 2-C Finite-offset CRS stack: Conclusion & Outlook ◮ arbitrary source/receiver offsets Acknowledgments Related talks ◮ arbitrary central rays ➥ different up- and downgoing ray branches ➥ handling of converted waves ➥ arbitrary acquisition geometries W I T ◮ description in terms of two-way experiments
9 th SBGf Conference, Introduction Salvador 2005 Boelsen & Mann “Conventional” CRS stack: Introduction ◮ zero-offset simulation Traveltime formulas General case ◮ normal central rays OBS and VSP ➥ coinciding up- and downgoing ray branches Multi-component data General idea ➥ no converted waves Paraxial rays Implementation ◮ description in terms of normal and NIP waves Data examples OBS data, 1-C Land data, 2-C Finite-offset CRS stack: Conclusion & Outlook ◮ arbitrary source/receiver offsets Acknowledgments Related talks ◮ arbitrary central rays ➥ different up- and downgoing ray branches ➥ handling of converted waves ➥ arbitrary acquisition geometries W I T ◮ description in terms of two-way experiments
9 th SBGf Conference, Introduction Salvador 2005 Boelsen & Mann “Conventional” CRS stack: Introduction ◮ zero-offset simulation Traveltime formulas General case ◮ normal central rays OBS and VSP ➥ coinciding up- and downgoing ray branches Multi-component data General idea ➥ no converted waves Paraxial rays Implementation ◮ description in terms of normal and NIP waves Data examples OBS data, 1-C Land data, 2-C Finite-offset CRS stack: Conclusion & Outlook ◮ arbitrary source/receiver offsets Acknowledgments Related talks ◮ arbitrary central rays ➥ different up- and downgoing ray branches ➥ handling of converted waves ➥ arbitrary acquisition geometries W I T ◮ description in terms of two-way experiments
9 th SBGf Conference, Introduction Salvador 2005 Boelsen & Mann “Conventional” CRS stack: Introduction ◮ zero-offset simulation Traveltime formulas General case ◮ normal central rays OBS and VSP ➥ coinciding up- and downgoing ray branches Multi-component data General idea ➥ no converted waves Paraxial rays Implementation ◮ description in terms of normal and NIP waves Data examples OBS data, 1-C Land data, 2-C Finite-offset CRS stack: Conclusion & Outlook ◮ arbitrary source/receiver offsets Acknowledgments Related talks ◮ arbitrary central rays ➥ different up- and downgoing ray branches ➥ handling of converted waves ➥ arbitrary acquisition geometries W I T ◮ description in terms of two-way experiments
9 th SBGf Conference, Introduction Salvador 2005 Boelsen & Mann “Conventional” CRS stack: Introduction ◮ zero-offset simulation Traveltime formulas General case ◮ normal central rays OBS and VSP ➥ coinciding up- and downgoing ray branches Multi-component data General idea ➥ no converted waves Paraxial rays Implementation ◮ description in terms of normal and NIP waves Data examples OBS data, 1-C Land data, 2-C Finite-offset CRS stack: Conclusion & Outlook ◮ arbitrary source/receiver offsets Acknowledgments Related talks ◮ arbitrary central rays ➥ different up- and downgoing ray branches ➥ handling of converted waves ➥ arbitrary acquisition geometries W I T ◮ description in terms of two-way experiments
9 th SBGf Conference, Introduction Salvador 2005 Boelsen & Mann “Conventional” CRS stack: Introduction ◮ zero-offset simulation Traveltime formulas General case ◮ normal central rays OBS and VSP ➥ coinciding up- and downgoing ray branches Multi-component data General idea ➥ no converted waves Paraxial rays Implementation ◮ description in terms of normal and NIP waves Data examples OBS data, 1-C Land data, 2-C Finite-offset CRS stack: Conclusion & Outlook ◮ arbitrary source/receiver offsets Acknowledgments Related talks ◮ arbitrary central rays ➥ different up- and downgoing ray branches ➥ handling of converted waves ➥ arbitrary acquisition geometries W I T ◮ description in terms of two-way experiments
9 th SBGf Conference, Introduction Salvador 2005 Boelsen & Mann “Conventional” CRS stack: Introduction ◮ zero-offset simulation Traveltime formulas General case ◮ normal central rays OBS and VSP ➥ coinciding up- and downgoing ray branches Multi-component data General idea ➥ no converted waves Paraxial rays Implementation ◮ description in terms of normal and NIP waves Data examples OBS data, 1-C Land data, 2-C Finite-offset CRS stack: Conclusion & Outlook ◮ arbitrary source/receiver offsets Acknowledgments Related talks ◮ arbitrary central rays ➥ different up- and downgoing ray branches ➥ handling of converted waves ➥ arbitrary acquisition geometries W I T ◮ description in terms of two-way experiments
9 th SBGf Conference, Introduction Salvador 2005 Boelsen & Mann “Conventional” CRS stack: Introduction ◮ zero-offset simulation Traveltime formulas General case ◮ normal central rays OBS and VSP ➥ coinciding up- and downgoing ray branches Multi-component data General idea ➥ no converted waves Paraxial rays Implementation ◮ description in terms of normal and NIP waves Data examples OBS data, 1-C Land data, 2-C Finite-offset CRS stack: Conclusion & Outlook ◮ arbitrary source/receiver offsets Acknowledgments Related talks ◮ arbitrary central rays ➥ different up- and downgoing ray branches ➥ handling of converted waves ➥ arbitrary acquisition geometries W I T ◮ description in terms of two-way experiments
9 th SBGf Conference, Introduction Salvador 2005 Boelsen & Mann “Conventional” CRS stack: Introduction ◮ zero-offset simulation Traveltime formulas General case ◮ normal central rays OBS and VSP ➥ coinciding up- and downgoing ray branches Multi-component data General idea ➥ no converted waves Paraxial rays Implementation ◮ description in terms of normal and NIP waves Data examples OBS data, 1-C Land data, 2-C Finite-offset CRS stack: Conclusion & Outlook ◮ arbitrary source/receiver offsets Acknowledgments Related talks ◮ arbitrary central rays ➥ different up- and downgoing ray branches ➥ handling of converted waves ➥ arbitrary acquisition geometries W I T ◮ description in terms of two-way experiments
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