Postconvention Workshops

Finish off a productive week with 20 Postconvention Workshops featuring a range of technical topics.

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Postconvention workshops are offered on Thursday and continue through Friday, 20 September.

Please note that the number of seats available in each session is limited and offered on a first-come, first-served basis. If seats are available, movement between workshops during a session will be permitted.

Pricing

Workshop passes include access to any or all postconvention workshops.

You can sign up for Postconvention Workshops and more when you register for the SEG Annual Meeting. Only want to attend Postconvention Workshops? Email registration@seg.org to register.

Thursday, 19 September

W-1: DAS - Part 1: Recent Advances in Subsurface Characterization using Distributed Acoustic Sensing and the Road Ahead

8:30 AM - 5:00 PM
Convention Center, Room 302B

Organizers: Ge Zhan, BP; Yingping Li, Shell; Bjorn Olofsson, ExxonMobil; Ge Jin, ConocoPhillips; Michael Craven, Chevron; Arthur Cheng, NUS; Elita Li, NUS; Michel Verliac, Total; Xin Wang, Chevron
Email
Through the support of the SEG Research Committee

Over the past few years, distributed acoustic sensing (DAS) has been successfully used in many geophysical applications. The use of DAS in the oil and gas industry for borehole/surface seismic imaging, reservoir surveillance and microseismic monitoring for fractures has recently been accelerated with the improvements in fiber/interrogator sensitivity, flexible deployment of fiber-optic cables and the advances in data processing. This workshop aims to highlight the latest advances in DAS technology and will discuss

  • Case studies that feature seismic applications such as vertical seismic profiling (VSP), near-surface, passive seismic and microseismic monitoring, hydraulic fracturing monitoring, CO2 sequestration and geothermal reservoir characterization;
  • Advances in DAS interrogator, fiber and cable design;
  • Massive data - strategy for management, processing and machine learning;
  • Challenges in offshore fiber-optic installations including subsea for downhole DAS applications;
  • Challenges of mechanical coupling in retrievable fiber deployment in vertical wells;
  • Business cases and value utilizing DAS

W-2: Advances with Land Seismic for Characterizing Reservoirs - Part 1

8:30 AM - 5:00 PM
Convention Center, Room 221D

Organizers: Christof Stork, LSNS; Mike Perz, TGS; Bruce Hootman, WG; Rodney Johnston, BP
Email
Through the support of the SEG Research Committee

Over the past 10–15 years land acquisition and data processing have concentrated on acquiring denser and more broad-band data around the globe. Continuous recording, simultaneous source acquisition, ultra-high channel count recording systems and advanced vibrator control systems have facilitated the massive amount of data being acquired on shore. The goal is to acquire datasets that are full azimuth with long offsets, dense spatial sampling, and broadband. Two geophysical perspectives are used to justify the use of these types of acquisitions. First is to sample the reflection signal for the optimum illumination and imaging to interpret the complex reservoirs. The second is to adequately sample the noise so it may be separated from the signal and removed with minimal signal distortion. To some extent, the goal of better sampling the signal has been demonstrated; however, the demonstration of better noise removal is more challenging.

There is a clear opportunity: 3D seismic land acquisition and processing is undergoing a significant change that will likely dramatically improve data quality. The changes include 1) dramatically lighter and cheaper nodes and simultaneous sources which each increase the number of receivers and sources by 5-10x, and together increase data quantity by ~50x; 2) Ability to do creative, irregular field layouts to optimize acquisition for noise, practical constraints, and geologic objective (parts of this have been called Compressive Sensing); and 3) More advanced processing to address the noise, correct signal distortion, and irregular geometry. 

In this workshop we will seek to address questions regarding where we are in seismic acquisition and where we are going in the future, what is working and what is not. Some basic questions to touch on are:

  • What are the main causes of land seismic not resolving subtle reservoir complexity?
  • We propose that interpretation science and tools have become very advanced, but they appear to be held back by the seismic data quality after acquisition and processing.
  • Do industry methods for acquisition and processing have to get better in many cases?
  • Do we have better acquisition and processing methods but the industry isn't applying them?

W-3: Integrated Geophysical and Geomechanical Evaluation of Induced Seismicity

8:30 AM - 5:00 PM
Convention Center, Room 221C

Organizers: Azra Tutuncu, CSM; Stephan Gelinsky, Shell; Jacques Leveille, Ion; Cengiz Esmersoy, Schlumberger; Dan Ebrom, Equinor; Ali Mese, Geomechanics Engineering and Research
Email
Through the support of the SEG Research Committee

The widespread use of hydraulic fracturing operations in shale gas and tight oil developments in the US has brought significant attention to the increasing number of earthquakes at historically seismic areas. While new regulations introduced by state and federal regulatory agencies appeared to help in reducing their exponential increase, the slowdown in the operations in the past two years can be partially attributed to the observed reduction. The limited scientific understanding of why induced seismicity occurs in one environment and not in another under similar conditions will require better understanding of mechanisms and sources triggering the induced-seismicity events. Research studies with emphasis on distinguishing the various sources and circumstances, along with improvements in the network of seismograph coverage throughout the US and globally, will be required to understand these critical geohazard issues. The large number of data collected at hydraulic fracturing and smart well sites equipped with fiber optic sensors and microseismic sources will continue to add scientific knowledge, enabling sustainable production from fossil energy resources through responsible drilling, completion designs and execution along with proper production parameters.

In this special session, research and operational results relevant to induced seismicity enlightening the role of stimulation, hydrocarbon production, geothermal operations, and wastewater disposal will be covered. Geomechanical, geophysical, engineering field and laboratory data together with coupled modeling evaluation of the past events will be integrated to minimize the geohazard risk in unconventional and conventional operations in newly developed fields as well as in depleted reservoirs.

W-4: Machine Learning and Data Analytics Algorithms and Workflows for Geoscience Applications

8:30 AM - 5:00 PM
Convention Center, Room 301B

Organizers: Aria Abubakar, Schlumberger; Sergio Chavez-Perez, IMP; Wenyi Hu, AGT; Anisha Kaul, Schlumberger; Weichang Li, Aramco; Anoop Mullur, ExxonMobil
Email
Through the support of the SEG Research Committee

This workshop will review and discuss the recent development that leverages the “latest” data analytics and machine learning techniques to improve the efficiency and accuracy of geoscience workflows, and explore new opportunities. For example, in addition to the existing applications such as geobody identification and well log multivariate data analysis, what other challenging geoscience problems can be formulated and solved effectively by machine learning? How to tailor the machine learning structures, algorithms, and strategies to meet the specific structures of geoscience data? How to fully exploit the power of machine learning and data analytics while combined with physics-based approaches?

Ultimately, this workshop will review and discuss successes, potentials, and challenges of machine learning practice in geoscience, stimulating interest in both geoscience and machine learning communities, and accelerating the R&D activities in this area.

W-5: Value of High-frequency FWI Models

8:30 AM - 5:00 PM
Convention Center, Room 303B

Organizers: Ping Wang, CGG; Rongrong Lu, ExxonMobil; Uwe Albertin, Chevron; Laurent Demanet, MIT; Adriano Gomes, CGG; Antonie Guitton, DUG
Email
Through the support of the SEG Research Committee

There has been some discussion about the possibility of directly interpreting the high-frequency FWI velocity model (Lu, 2016; Shen et al., 2018; Wang et al., 2019), even though the high-frequency component of the velocity model may not have much impact on the migration kinematics. However, one needs to be aware that the high-frequency FWI velocity model can be contaminated by inadequate physics (e.g., density, absorption, anisotropy and elasticity may not be modeled or allowed to change during FWI) in the inversion algorithm, and therefore its interpretation must be performed with care.

This workshop will try to answer questions like:

  • Is high-frequency FWI needed at all? How high in frequency should we go?
  • How to utilize high-frequency FWI models, the benefits and the traps?
  • What can we do to make high-frequency FWI more useful?
  • How is high-frequency FWI related to LSRTM?

W-6: Joint Imaging/Inversion of S-waves with P-waves: Advances in Characterizing Overburden, Elastic Models and Petrophysical Properties related to Conventional and Unconventional Reservoir Development

8:30 AM - 5:00 PM
Convention Center, Room 221A

Organizers: Jim Gaiser, GGC; Henri Houllevigue, Total; Jim Simmons, CSM
Email
Through the support of the SEG Research Committee

Shear waves (S-waves) are becoming more widely utilized with P-waves for joint inversion of elastic properties, and imaging using elastic model building and tomographic techniques. The focus of this workshop is on all types of S-waves: pure modes from horizontal sources and converted-wave modes (PS- or SP-waves). One of the main goals is to discuss advances in elastic model inversion and beyond, to invert for important petrophysical properties of the reservoir such as lithology, clay content, porosity, saturation, rigidity, and fracture, stress or geomechanical properties. Can anisotropic behavior of S-waves also be utilized to break free from unrealistic isotropic assumptions?

Another key goal of this workshop is to address challenges in S-wave imaging with P-waves. Are we overcoming overburden and near-surface effects for land S-wave and marine PS-wave imaging? Can full-waveform inversion and joint tomography of S-waves with P-waves be employed for elastic property characterization? What is the role of S-wave splitting for anisotropic model building in orthorhombic media – are S-waves helping or limiting the effort?

The format of the workshop will be short presentations followed by clarification questions and a more extensive discussion period. The audience will be encouraged to pose questions and also share any experiences they may have had with S-waves.

W-7: Frontiers in Seismic Reservoir Characterization

8:30 AM - 5:00 PM
Convention Center, Room 221B

Organizers: Jingfeng Zhang, BP; Per Avseth, Norwegian University of Science and Technology; Sengupta Madhumita, Saudi Aramco; Mrinal Sen, University of Texas, Austin
Email
Through the support of the SEG Research Committee

Seismic reservoir characterization can have huge business impact on exploration and reservoir development. Seismic inversion for reservoir properties is a key part of reservoir characterization. Traditional ways of seismic inversion are all deterministic and include colored inversion, EEI, and model-based inversion.

There are considerable activities and interests in seismic inversion that step beyond the deterministic approach, and/or common 1D convolution model. This full-day workshop will cover those interesting technologies: Stochastic inversion (Bayesian or not), Full Waveform based Vp, Vs, Rho inversion, and machine learning based inversion.

W-8: Real-Time Processing for Large-scale Streaming Seismic Data

8:30 AM - 12:00 PM
Convention Center, Room 225C

Organizers: Eileen Martin, Virginia Tech; Biondo Biondi, Stanford
Email
Through the support of the SEG Research Committee

Recent advances in many sensor data acquisition technologies paired with new computational algorithms and hardware are making real-time geophysical processing of large-scale streaming data a reality for some applications. This includes highly-instrumented unconventional and conventional fields, next-generation microseismicity monitoring, in-the-field processing of large-scale marine surveys and wireless node land surveys. In this workshop we will explore methods for real-time processing from data to decision. This includes a variety of scalable streaming algorithms including machine learning methods, adaptive pre-processing, automated noise detection and filtering, the detection of weak signals or small changes in noisy data, and fast methods for data reduction, compression or decompression. Some particular questions of interest include: How can real-time processing make a difference in operations and decisions and what are current bottlenecks? How do data acquisition systems shape real-time processing workflows (quality measures, synchronicity between sensors, batch sizes of data, etc.)? What compute resources are expected to be available in the field, and what are the tradeoffs being made to meet these constraints? How can cloud and edge computing play a role in real-time processing, and can we take advantage of new computing paradigms (e.g. map-reduce, randomized approximation algorithms, etc.)? When should machine learning or AI methods be used in lieu of more traditional computational science methods, and how interpretable or generalizable are the results?

W-9: New Technologies in Marine Acquisition

8:30 AM - 12:00 PM
Convention Center, Room 225B

Organizers: Mariana Gherasim, BP; Andrew Feltham, Total; Josef Paffenholz, Fairfield Geo; Rongxin Huang, CGG; Ray Abma; Andrew Brenders, BP
Email
Through the support of the SEG Research Committee

Marine seismic technology continues to develop at a swift pace. Broadband acquisition, very low frequency sources for automatic velocity model building with FWI, simultaneous source developments such as Apparition, triple-, quadruple, and penta-source acquisition for towed-streamer surveys, coded sources for air guns and Vibroseis sources, and autonomous small sources and ocean bottom nodes are areas of rapid progress.

These new technologies can impact both exploration as well as production monitoring type surveys. Ocean bottom nodes are especially suited for time-lapse surveys due to the low noise and high repeatability compared to streamer. A recent development is the use of sparse node surveys for FWI.

Considering the current environment, these advances are essential for a cost-effective acquisition while preserving the required level of seismic data quality. During this workshop we will review and discuss the opportunities presented by these innovative techniques, share examples and review lessons learned.

W-10: Misac Nabighian Memorial Workshop

8:30 AM - 12:00 PM
Convention Center, Room 304B

Organizers: Ed Biegert, Geoscientist; Yaoguo Li, Colorado School of Mines; Jean M. Legault, Geotech Ltd.; Aline Tavares de Melo, Universidade Federal de Minas Gerais; Ken Witherly, Condor Consulting; Cara Schiek-Stewart, Shell; Manik Talwani, Rice University
Email
Through the support of the Mining Committee and the Gravity and Magnetics Committee

Dr. Misac Nabighian was a pioneer in applied geophysics, an extraordinary scientist, a great teacher and mentor, and an extraordinary human being. He was best known as a leading theoretician in electromagnetic and potential-field geophysics where he made many seminal contributions. He was known for his teachings in applied geophysics, mentoring of many geophysicists, and his care for his students, friends, and colleagues. To remember and to honor Dr. Misac Nabighian and to celebrate his life and accomplishments, the SEG Gravity and Magnetics Committee and the SEG Mining Committee will hold a special postconvention workshop, “Misac Nabighian Memorial Workshop.” The workshop will invite and solicit contributions in gravity, magnetic, electrical, and electromagnetic methods with applications in mineral and hydrocarbon exploration for both oral and poster presentations.

W-11: Long Term Monitoring of CO2 Geosequestration: Continuous Surveillance and Quantitative Interpretation

1:30 PM - 5:00 PM
Convention Center, Room 305

Organizers: Guillaume Bergery, TOTAL; Don Lawton, CMC Research Institutes and the University of Calgary; Roman Pevzner, Curtin University; Stanislav Glubokovskikh, Curtin University; Martin Schoenball, Lawrence Berkeley National Laboratory; Michel Verliac, TOTAL
Email
Through the support of the SEG Research Committee

Recent advances in acquisitions systems (fiber optics, PRM, etc.) and in permanent sources will avail practical permanent monitoring solutions in the near future. Combining time-lapse seismic with other geophysical techniques to better quantify CO2 injection is already within reach. This workshop will focus on how the combination of different geophysical methods, such as 4D surface and borehole seismic, microseismic, passive seismic tomography, gravimetry and EM can quantify the CO2 injection. Current limitations, reliability and possible improvements of sources, acquisition systems, and inversion techniques will also be discussed.

W-12: Interpretation and De-risking to Support Decision making in Development and Production

1:30 PM - 5:00 PM
Convention Center, Room 225B

Organizers: Adam Bucki, ExxonMobil; Jay Byers, Chevron; Andrew Royle, Chevron; Mariana Gherasim, BP
Email
Through the support of the SEG Development and Production Committee

What does it take to define, manage and optimize a reservoir throughout field life? What information is needed to produce in an optimal way and what can we do to ensure that geophysical data is valued throughout the life of a field?

Data collection, analysis and integration is critical input for field management decisions and the influence of geophysical data can be significant. But sometimes there are road blocks preventing our input from being optimized. Our goal in this workshop is to enhance our understanding of opportunities for integration and become better “internal entrepreneurs” so that geophysics functions can improve support for reservoir management decisions.

We will explore the perspectives and objectives of geologic modelers, and interpreters and discuss ways to maximize insights gained from seismic data. We will also get input from vendors on integration misses. Looking forward, machine learning is on the horizon and we will discuss how is this landscape will change and what can we do now to prepare ourselves to influence with this potential paradigm shift?

There will be time at the end for detailed discussion and questions.

W-13: Geophysical Monitoring of Unconventional Reservoirs

1:30 PM - 5:00 PM
Convention Center, Room 225C

Organizer: Daniel Ott, Deloitte
Email
Through the support of the SEG Development and Production Committee

Over the past decade, unique opportunities in the development of unconventional plays worldwide have dramatically increased the role of real-time geophysical monitoring technologies such as time-lapse seismic, continuous passive seismic and micro-seismic, principally using permanent surface and borehole systems. There is an especially important role for the use of integrated digital methods that have full access to detailed drilling, completion and production data, as well as both seismic and non-seismic data (EM, ERT, potential methods, remote sensing, borehole logging, etc.). The objective of this workshop is to discuss the advances of these technologies and their impact on production and associated risk assessments that can be quantified in economic terms throughout the entire asset life cycle. The workshop will focus on key challenges categorized along the following themes:

  1. Better spatial sampling/fold, subsurface coverage/illumination, overall resolution and detection threshold of advanced geophysical measurements (WVSP, DAS, multicomponent, etc.);
  2. Integration of seismic and non-seismic, active and passive, surface and borehole monitoring techniques;
  3. Links to the dynamic reservoir model, production digitized data and geomechanics (temperature, pore pressure, stress, strains, deformations, etc.).

Attention will be paid to the technological advancements in handling and combining massive amounts of continuous multi-physics data for characterization and estimation of dynamic reservoir properties. In addition, the workshop will also review and identify current and future geohazard mitigation strategies to be implemented in quantitative monitoring protocols (EWS, TLP, etc.) to regulators and industry.

Friday, 20 September

W-14: DAS Part 2: What is next for DAS? Operator needs versus technology suppliers' vision

8:30 AM - 12:00 PM
Convention Center, Room 302B

Organizers: Michel Verliac, TOTAL; Ge Zhan, BP; Mahmoud Farhadiroushan, Silixa; Albena Mateeva, Shell; Michael John Williams, Schlumberger
Email
Through the support of the SEG Research Committee

Over the past few years, distributed acoustic sensing (DAS) has been successfully used in many geophysical applications. The use of DAS in the oil and gas industry for borehole/surface seismic imaging, reservoir surveillance and microseismic monitoring for fractures has recently been accelerated with the improvements in fiber/interrogator sensitivity, flexible deployment of fiber-optic cables and the advances in data processing. This Part 2 of the DAS workshop will open for discussion the future needs from the operators versus the technology suppliers’ vision for new developments. Are they aligned?

W-15: Advances with Land Seismic for Characterizing Reservoirs - Part 2

8:30 AM - 12:00 PM
Convention Center, Room 221D

Organizers: Christof Stork, LSNS; Mike Perz, TGS; Bruce Hootman, WG; Rodney Johnston, BP
Email
Through the support of SEAM and the SEG Research Committee

Over the past 10‑15 years land acquisition and data processing has concentrated on acquiring denser and more broad-band data around the globe. Continuous recording, simultaneous source acquisition, ultra-high channel count recording systems and advanced vibrator control systems have facilitated the massive amount of data being acquired on shore. The goal is to acquire datasets that are full azimuth with long offsets, dense spatial sampling, and broadband. Two geophysical perspectives are used to justify the use of these types of acquisitions. First is to sample the reflection signal for the optimum illumination and imaging to interpret the complex reservoirs. The second is to adequately sample the noise so it may be separated from the signal and removed with minimal signal distortion. To some extent, the goal of better sampling the signal has been demonstrated; however, the demonstration of better noise removal is more challenging.

There is a clear opportunity: 3D seismic land acquisition and processing is undergoing a significant change that will likely dramatically improve data quality. The changes include 1) dramatically lighter and cheaper nodes and simultaneous sources which each increase the number of receivers & sources by 5-10x, and together increase data quantity by ~50x; 2) Ability to do creative, irregular field layouts to optimize acquisition for noise, practical constraints, and geologic objective (parts of this have been called Compressive Sensing); and 3) More advanced processing to address the noise, correct signal distortion, and irregular geometry. 

In this workshop we will seek to address questions regarding where we are in seismic acquisition and where we are going in the future, what is working and what is not. Some basic questions to touch on are:

  • What are the main causes of land seismic not resolving subtle reservoir complexity?
  • We propose that interpretation science and tools have become very advanced, but they appear to be held back by the seismic data quality after acquisition and processing.
  • Do industry methods for acquisition and processing have to get better in many cases?
  • Do we have better acquisition and processing methods but the industry isn't applying them?

W-16: Artificial Intelligence Frontiers in Geosciences

8:30 AM - 12:00 PM
Convention Center, Room 301B

Organizers: Vikram Jayaram, Pioneer; Atish Roy, BP
Email
Through the support of the SEG Research Committee

Unprecedented current developments in deep learning technologies, algorithms in pattern and predictive recognition have driven modern-day decision making through predictive analysis and uncovered insights to find correlations and causalities from complex and heterogeneous sources of oil field data.

In this workshop we address and compile insightful case studies and applications of robust machine learning (ML) algorithms and systems that can automate the processing, interpretation and characterization of geological, geophysical data within an integrated framework. We will also discuss the opportunities and challenges using these intelligent compute agents.

W-17: Seismic Attributes in the Age of Machine Learning

8:30 AM - 12:00 PM
Convention Center, Room 303B

Organizers: Long Jin, Shell; Jie Zhang, ExxonMobil; Oswaldo Davogusstto Cataldo, Shell
Email
Through the support of the SEG Research Committee

  • New attributes
  • New attributes assisted workflows and applications in different geological settings
  • Can machine learning be an enabler for seismic attributes analysis?
  • Advances in attribute computing
  • Do we still need attributes when machine learning-based workflows start to mature?

W-18: Least-Squares Migration and the Way Forward

8:30 AM - 12:00 PM
Convention Center, Room 221A

Organizers: Ping Wang, CGG; Faqi Liu, PGS; Gerald Schuster, KAUST; Antoine Guitton, DUG; Hui Huang, CGG; Carlos Calderon, ION
Email
Through the support of the SEG Research Committee

Least-squares migration was first proposed in the 1980s. Its original form works in the data domain, involving an iterative process of migration and Born modeling, which is computationally prohibitive for modern 3D seismic data sets. Image-domain single-iteration approaches were later introduced as a cost-reducing alterative; however, the observed imaging uplift of such approaches was too limited to justify the still very expensive compute cost. In recent years, advancements in compute power and algorithm implementation have made these image-domain single-iteration approaches more practical and attractive for field data applications.

This workshop will aim at establishing the way forward for the technique by sharing successes and challenges of existing LSM approaches and some ongoing frontier research in LSM:

  • The impact of velocity errors on LSM and ways to mitigate it
  • The impact of multiples and other coherent noise and ways to reduce it or use these events
  • The reduction of compute cost through preconditioning and/or encoding
  • Combining LSM and reflection FWI (RFWI)
  • The link between LSM and high-frequency FWI
  • Multi-parameter LSM: inverting for more model perturbation types
  • Road ahead for LSM

W-19: Geophysics for Geothermal Applications

This workshop has been cancelled.

W-20: Rock Physics Implications of CO2 Injection in the Subsurface

8:30 AM - 12:00 PM
Convention Center, Room 221C

Organizers: Hendratta Ali, Fort Hays State University; Nazmul Haque Mondol, University of Oslo; Manika Prasad, Colorado School of Mines
Email
Through the support of the SEG Women's Network Committee

This workshop will bring together a panel of experts and practitioners to share insights about the challenges/opportunities for applying rock physics to image CO2 and fluids interactions in the subsurface. Intended for geoscientists interested in the processes, imaging and detection technologies to detect and quantify subsurface fluids and CO2. This workshop is sponsored by the SEG WNC.

W-21: Ambient Noise Imaging and Monitoring for High-resolution Spatial and Temporal Near-surface Characterization and Exploration Seismology

8:30 AM - 12:00 PM
Convention Center, Room 225B

Organizers: Niels Grobbe, University of Hawaii at Manoa; Sjoerd de Ridder, University of Leeds
Email
Through the support of the SEG Near-Surface Geophysics Technical Section

Leaders from industry and academia will present on the advancements in ambient seismic noise for high-resolution spatial, temporal near-surface characterization, and exploration seismology. The session will cover a wide range of inter-connected topics; e.g. noise correlation monitoring studies, novel sensor technologies, near-surface (e.g. groundwater) and exploration scale applications, and wavefield gradiometry using dense sensor networks.

  • Call for Abstracts closed
    1 April 2019 at 5:00 PM CT
  • Early Bird Registration closes
    30 July 2019

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SEG San Antonio 2019

15-20 September 2019
Henry B. González Convention Center
900 E Market St.
San Antonio, TX 78205

Phone: 918-497-4644
Email: registration@seg.org

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