79th EAGE Conference & Exhibition 2017

Energy, Technology, Sustainability - Time to open a new Chapter

Date
12 - 15 June
Location
Paris, France
Registration
Closed
Call for papers
Closed

Workshop 5: Linking Active and Passive Seismics

WS05 Sunday 11 June
 Title: Linking Active and Passive Seismics
 Room: B1
 Convenors: U. Zimmer (Shell)
B. Schwarz (University of Oxford)
D. Gajewski (University of Hamburg)


Workshop Description

Based on the same theoretical foundations of wave propagation, methods in active and passive seismics are still often treated as independent entities. With the rise of interest in passive seismic monitoring of oilfields and production sites we observe that concepts of global scales, usually adopted for earthquake localization and characterization gain increasing interest in the hydrocarbon industry. We have seen a technology transfer from earthquake seismology into exploration seismics and vice versa. Fault plane solutions and moment tensor inversion became part of the passive seismic toolbox and imaging based location techniques like, e.g., diffraction stacking, have replaced classical methods of seismic source location. Diffraction seismic events can be considered as the link between active and passive seismics.

The kinematic diffraction response of a microseismic event corresponds to the kinematic response of a diffractor in active seismic data. Moreover, diffractions may be viewed as “measured Green's functions”, which are of central importance in interferometry and imaging. They play a key role in establishing stronger links between active and passive methods and may guide the joined processing, model building and imaging of active and passive seismic data.

In this workshop we want to bring together experts from the active and passive seismic communities to take a step forward in improving the technological exchange between both fields, in order to seamlessly blend reflection seismic data (particularly diffractions) with passive seismic data for improved localization, model building and imaging in both fields.

Workshop Programme

09:00
Introduction 
Session Passive Sources on Large Scales
09:10
Multiband Array Detection and Location of Seismic Sources recorded by Dense Seismic Networks - Application to regular and slow earthquakes
N. Poiata* (National Institute for Earth Physics, Romania), C. Satriano (Institut de Physique du Globe de Paris), J.-P. Vilotte (Institut de Physique du Globe de Paris), P. Bernard (Institut de Physique du Globe de Paris)
09:35
Estimation of Source Time Functions and Yields of Explosions directly from Seismograms using the Cube-root Scaling Law
A. Ziolkowski* (University of Edinburgh)
10:00
Passive Seismic Imaging of Structure Discontinuities around the Active Fault using Scattered Earthquake Waveforms
H. Zhang* (University of Science & Technology of China), K. Chang (University of Science & Technology of China)
10:25
Discussion
10:40
Coffee break
Session Merging Aspects
11:00
Approaching Passive Data with the established Active Seismic Toolbox
L. Diekmann* (University of Hamburg), B. Schwarz (University of Oxford), A. Bauer (University of Hamburg), D. Gajewski (University of Hamburg)
11:25
A Unified Inversion Scheme for Diffractions and Passive Events
B. Schwarz* (University of Oxford), A. Bauer (University of Hamburg), D. Gajewski (University of Hamburg)
11:50
Squeezing the Most Out of our Passive Seismic Recording - Inverting for primary, secondary (scattering), and tertiary sources of seismic energy inside the Earth
T. Alkhalifah (KAUST)
12:15 Discussion
12:30 Lunch break
Session Unlocking the Potential of Ambient Noise
13:30 Linking Continuous and Transient Sources with Cross-correlation Full-waveform Inversion
K. Sager* (ETH Zurich), L. Ermert (ETH Zurich), C. Boehm (ETH Zurich), A. Fichtner (ETH Zurich)
13:55 Wave Field Inversion of Ambient Seismic Noise
S. de Ridder* (University of Edinburgh), J. Maddison (University of Edinburgh)
14:20 Ambient Noise Techniques as a Complimentary Tool in Exploration - The link to active reflection seismic
F. Martini (Tullow Oil), R. Davi (Tullow Oil), J. Doherty (Tullow Oil), J. Mongan (Tullow Oil), M. Igoe (Tullow Oil)
15:10
Coffee Break
Session Instrumentation and data integration
15:25 Urban Ambient Noise - From dense nodes to DAS
E. Martin* (Stanford University), J. Chang (Stanford University), F. Huot (Stanford University), Y. Ma (Stanford University), B. Biondi (Stanford University)
15:50 Passive meets Active - Getting to know the subsurface by seismic data integration
B. Cox* (Shell Global Solutions), J. Winsor (Shell Canada Ltd), A. Tomlinson (Shell Canada Ltd)
16:15 Imaging Seismic Anisotropy in a Shale Gas Reservoir by combining Microseismic and 3D Surface Reflection Seismic Data
W. Gajek* (IGPAS), J. Verdon (University of Bristol), M. Malinowski (IGPAS), J. Trojanowski (IGPAS)
16:40 Discussion & Conclusions
17:00 Closing