The Southeastern Geophysical Society

Please join SGS for our January 2018 luncheon on Friday, January 26 at 11:30am on the 1st floor of the Holiday Inn, 330 Loyola Ave. Our January talk will be given by SEG 2018 SPRING DISTINGUISHED LECTURER, Dr. William W. Symes, Noah G. Harding Professor Emeritus and Research Professor in Computational and Applied Mathematics in Rice University, Houston, TX USA. The talk is titled "Advanced imaging for practitioners".

Reservations: Mike Schneider(sgsluncheon@gmail.com)

To pay online for your luncheon, see paypal below:

SGS Luncheon

Title

Advanced imaging for practitioners

Speaker

Dr. William W. Symes, Noah G. Harding Professor Emeritus and Research Professor in Computational and Applied Mathematics in Rice University

Abstract

Seismic migration has been a core geophysical technology for more than 50 years and continues to evolve in its capacity to reveal detailed quantitative information about the sedimentary earth. Integration of ever more accurate and complete seismic wave physics, more precise numerical methods, and rapidly improving computer hardware and software environments have made formerly “advanced” methods such as prestack reverse time migration (RTM) relatively routine.

This lecture will discuss two variants of RTM aimed at enhancing the significance of image amplitudes. Both true amplitude migration and least squares migration (LSM) are being actively researched; singly and in combination, they have many applications, some surprising. I will describe a number of these applications and illustrate them using synthetic and field data examples.

Sharper Imaging, Angle-Dependent Reflectivity: True amplitude migration modifies RTM by filters and scale factors, producing physically significant amplitudes and more accurate event wavelet for negligible incremental cost. Some variants of true amplitude migration also can produce an extended image volume depending on position in the subsurface and on scattering angle/azimuth. Much additional information can be extracted from such extended images, including estimates of various physical parameters.

Accelerated least squares migration: LSM is iterative linear inversion, requiring repeated RTM application to update a physical model of the subsurface so that data traces are fit, wiggle for wiggle. Therefore, its improved account of the subsurface comes at a fairly high computational price. A properly formulated true amplitude migration can be used to accelerate the convergence of the iteration, reducing the required number of RTM applications by an order of magnitude or more with little additional cost per iteration.

Fast LSM Angle-dependent Reflectivity: Extended images represent the earth as a scattering angle/azimuth dependent reflectivity volume. Extended true amplitude migration accelerates an extended version of LSM also, yielding an extended model volume of calibrated precision at relatively low price.

Irregular Sampling / Missing Data: LSM naturally adapts to irregular acquisition geometry. By treating infill data as additional inversion targets to be determined, it is possible to use true amplitude accelerated LSM with incomplete data as well.

Accelerated FWI: Full waveform inversion (FWI) is the full-physics, nonlinear version of LSM, which is itself a single step in an effective FWI iteration. Acceleration (or even replacement) of this Gauss-Newton step by true amplitude migration results in a very substantial speed-up of FWI, coming much closer to convergence even with the small number of iterations used in typical contemporary FWI exercises.

Velocity Estimation: The velocity field is an essential input to most prestack imaging methods. A reasonably accurate initial estimate of velocity also is essential for reliable FWI. Traveltime tomography is perhaps the most common source of velocity information for these purposes. Wave equation migration velocity analysis (WEMVA) is another. Even though WEMVA is essentially tomographic, aimed at extracting kinematic information from the data, true amplitude migration and accelerated LSM can play a surprisingly constructive role. Use of these inversion methods in constructing image gathers for WEMVA substantially enhances the effectiveness of the WEMVA velocity update, removing some notorious artifacts that can impede convergence, and permitting effective accuracy control.

Things to Come: Much of the theory and practice for both true amplitude migration and LSM rests on the simplest acoustic wave equation. Recent work focuses on incorporating more accurate seismic physics, particularly elastodynamics and attenuation, and on reducing the computational expense of angle-dependent reflectivity estimation.

For more info: Date, Time and Location, Abstract and Bio

Bio

William W. Symes graduated with honors from the University of California--Berkeley in 1971 and received a PhD in mathematics from Harvard University in 1975. After research and teaching positions at University of British Columbia, University of Wisconsin, and Michigan State University, in 1983 he joined the faculty of Rice University, where he currently is Noah G. Harding Professor Emeritus and Research Professor in Computational and Applied Mathematics. He also has been a faculty member in Rice’s Department of Earth Science. He has worked in many areas of applied and numerical mathematics, including numerical methods for wave modeling, scientific software engineering, and theory of, and algorithms for, seismic inversion. He has developed grid-based eikonal solvers, data compression and multi parameter inversion algorithms, efficient viscoelastic modeling methods, QC methods for finite difference modeling (as part of the SEG’s Phase I SEAM project), optimal check-pointing for RTM and FWI gradient calculation, wave equation based acceleration of iterative least squares migration, and the extended modeling / differential semblance concept for seismic velocity estimation. To better explore these topics in an industrial context, Symes founded a research consortium, The Rice Inversion Project, which has been sponsored for more than 25 years by firms in the oil and computer industries, and has supported the studies of more than 40 MA, PhD, and postdoctoral students. Among other honors and awards, Symes has received the Ralph E. Kleinman and Geoscience Career awards from SIAM and is a SIAM Fellow (inaugural class) and Fellow of the Institute of Physics. In 2015, he received the Desiderius Erasmus prize from the European Association of Geoscientists and Engineers for his “seminal contributions to methods, analysis, algorithms, and software for seismic inversion and wave propagation…”

Current

Energy Day returns to the museum with major oil industry hands on display stations.

We are looking for enthusiastic volunteers to cover shifts of 11am-1pm and 1pm-3pm.

The SGS booth will have our geophone and oscilloscope so the kids can see how we can turn something they can hear and feel (banging/vibrations on the table) into something they can see on the screen. Lisa will bring her iPad to show the seismograh app to show movement in the X, Y, & Z directions. There will also be a non-working hydrophone on display and a wooden fault block model.

Other booths will have the ever popular oil finder game, how an oil field forms form, properties of oil, and some other events in the works.

We are also looking to open the event up for a refinery display, Entergy, Solar, Wind, and NASA to potentially contribute.

SGS and NOGS have a great working relationship at outreach events. Our displays are set up so that the kids and families can progress from station to station and see what geologists and geophysicists do and how it all fits together.

If you would like to volunteer for a time slot at the SGS booth, please contact:

Lisa Kennedy
cell: 504-782-7100 (call or text)
lisadwyerkennedy@gmail.com (personal)
lisa.kennedy@boem.gov (work)

Upcoming

This fall NOGS is very active with 3 large scale oil industry outreach science career events.

Please consider volunteering for one or more of these fun filled geology learning opportunities.

Also consider attending the 47th New Orleans Gem, Mineral, Fossil, and Jewelry Show for some excellent specimens.

Energy Day Sept 16th
Louisiana Children’s Museum 11-3
Stem Education Day Sept 30th
Saints Training Center South End Zone 10-2
New Orleans Gem and Mineral Show Oct 13-15
Alario Center, Westwego weekend attraction
Girl Scouts Believe in Girls October 21
UNO Campus 9:30-2

To volunteer for a shift at any event, please contact:

Tom Bergeon
Tom.bergeon@upstreamexp.com

Education

August 18th, 19th & 20th 2015

Hilton Riverside New Orleans

Geoscience Opening Seminar, August 18

“The Temporal and Spatial Evolution of Reservoirs and Traps, Northern Deep Water Gulf of Mexico” with Paul Weimer, University of Colorado

This course will summarize the temporal and spatial evolution of the reservoirs for the 220 fields in the northern Deepwater Gulf of Mexico. Lectures and exercises will address the key components of each of the major reservoirs by age. The trap types for all of the fields are reviewed and placed within their regional context and exploration province type.

Tickets for the Geoscience Seminar are $225.00 and can be purchased along with your DWTS registration at http://www.deepwaternola.org

Scholarships

Download an SGS Scholarship Application form to apply. Scholarships are made possible by corporate donations and member sponsorship of our Golf Tournament Fundraiser held in the Spring.

Don't forget scholarship applications are due April 30th! As a reminder, children and grandchildren of all current SGS members that are entering college or currently attending college or graduate school can apply for an SGS scholarship - regardless of their child/grandchild's major!

Applications are reviewed and awarded by the SGS Scholarship Committee based on academic achievement, community service and/or employment history, extracurricular activities, and financial need. Applications will not be considered unless the required transcripts and letters of recommendation are received by the Committee by the deadline. The form and supporting documents must be received by the Scholarship Committee by April 30th. Note - It is also the responsibility of the SGS sponsor to keep their membership current. If you are an SGS member sponsoring a scholarship applicant, but are unsure if your membership is current, please contact Pamela Bucher (Pamela.Bucher@shell.com) to determine your membership status.

Scholarship Application Process:
1. Ensure your SGS membership is current and that your child/grandchild meets the eligibility requirements (see below)
2. Complete the scholarship application form
3. Gather the required supporting documents (a list of the required documents for each educational level is provided in Section Two on the attached scholarship application form).
4. Deliver the application form and supporting documents to a member of the Scholarship Committee via hand delivery, email or mail-in. The 2015-2016 SGS Scholarship Committee Members are:

Scott Glassman, Current SGS President (nawlinssg@aol.com)
Robin Broussard, Past SGS President (robin.broussard@shell.com)
Toby Roesler, Prior Past SGS President (roeslerta@stoneenergy.com)
Eric Zimmerman, University Liason (ericz@llog.com)

5. Mail-in forms and documents can be sent to the following mailing address and must be post-marked April 30th for consideration: SGS Scholarship Committee, P.O. Box 57141, New Orleans, LA 70157

Eligibility Requirements:
Applicant is enrolled or planning to enroll in college for the next academic year.
Applicant is one of the following:
High school senior planning to attend college next fall
Undergraduate or graduate college student
Applicant has not been a previous recipient of an SGS Scholarship award.
Applicant is a daughter/granddaughter or son/grandson of a current SGS member.

If you are unable to participate in the SGS Fundraising Golf Tournament, but would like to donate personally to the Scholarship Fund, you can do so by check, cash or online payment via credit card. To donate funds to the SGS Scholarship Fund online, click the donate button below:

The SGS thanks you all for supporting local university students and the children of SGS Members. Due to the success of our annual golf tournament/scholarship fundraiser, this year we were able to fund three scholarships.

Congratulations to the Bill Blair Scholarship Award 2015 Recipients:

  • Hayley Thorson

Congratulations to the University Earth Science Award 2015 Recipients:

  • Nicholas Guiffre – LSU
  • David Brassieur – UNO

In addition to and independent of the SGS Scholarship, our parent society SEG also runs a Scholarship Program. If you have any questions in regard to the SEG Scholarship please e-mail scholarships@seg.org.

The Southeastern Geophysical Society

proudly announce the

2017 ANNUAL SCHOLARSHIP FUNDRAISING GOLF TOURNAMENT & CRAWFISH BOIL

WHEN: Thursday, March 23rd, 2016, 8:30 AM Shotgun Start

WHERE: Tchefuncta Country Club, Covington, LA

REGISTER: Fill out the registration form below & return to sgsluncheon@gmail.com

PAYMENT: Online below via paypal or via check


2017 Annual Scholarship Fundraising Golf Tournament & Crawfish Boil

If by check, please make payable to "Southeastern Geophysical Society" and mail to the address below:

POBOX 57141

701 LOYOLA AVE

NEW ORLEANS, LA, 70157

CALL FOR SGS SCHOLARSHIP SPONSORS

SGS invites both organizations and individual SGS members to contribute to our annual scholarship fundraiser. Each year, SGS awards scholarships to high school seniors and college students majoring in the earth sciences, and our spring golf tournament is the primary source of scholarship funding.  These scholarships are an important contribution to the promotion of scholastic excellence, and your participation in the golf tournament will support this worthy cause. 

Company / Organization Sponsorship

Organizations can donate online by visiting http://sgs-neworleans.org/  Click on the “Golf Tournament” tab and specify your sponsorship level under “Sponsors”.

Organization Sponsorship Levels

Platinum            $1,000

Gold                     $500

Silver                   $250

Hole                     $100

Organizations are also encouraged to donate “Ditty Bag Fillers” such as golf balls, golf towels, t-shirts with logos, tees, ball markers, convention exhibit booth give away items with logos, snacks, and “in kind” donations such as gift certificates. 

Individual SGS Members Wishing to Contribute to the Scholarship Fund

For members unable to participate in the golf tournament, you can still contribute to the scholarship fund!  This is a great opportunity to support geoscience education & promote SGS in the local community.  Members can donate online by visiting http://sgs-neworleans.org/ Click on the “Golf Tournament” tab and use the paypal “Donate” button to specify a flexible amount.    

Lastly, check out the fun we had at last year’s golf tournament!

http://sgs-neworleans.org/archives/sgs_newsletter_april_15.pdf

Please direct tournament entry correspondence to the following representative:

Louis Sturgess  (504) 425-7636

sgsluncheon@gmail.com

Please click the pdf icon to download the gold tournament registration form.










Membership

Our membership runs from June 1st one year to May 31st the next. The current membership form can be downloaded here: 2017-2018 SGS Membership Application Form. If you played in the Golf Tournament this year you become a member through May 2018. If you didn't then you will need to send in or bring your $25 with next year's application form filled out to one of our events.

SGS membership renewal requests will soon be emailed by the SGS Secretary to individuals with expired memberships in August. If you do not receive one, then your membership is probably up-to-date.

2017 - 2018 SGS Membership options

Reflections

Download and checkout the new December 2017 Reflections newsletter here. Archive editions of Reflections can be found here.

Contact our editor, Arslan Tashmukhambetov, with submissions for the newsletter and/or to place an advertisement.
Benefits:

  • Support the geophysical community and geophysics in South East Louisiana
  • Exposure to major oil companies and independents working onshore as well at the Gulf of Mexico
  • Advertisements are published monthly (September-June) in the society newsletter
  • Advertisements to be published in the membership directory
  • Logos for full page advertisers are displayed on the SGS website along with a link to the advertisers' own websites
SGS Reflections Ads Sizes and Rates
Company Name

Calendars

  • A calendar of our activities or events to be aware of.

OCS Bulletin Board

  • Since 1995 the first Internet Website providing critical information on the Gulf of Mexico - OCS BBS.

SGS 2016-2017 Goals & Objectives:

  • To be the most successful local Geophysical society in America
  • To provide a service to the membership, local companies, and the region
  • Focus on Education, Technology, Social and Community
  • General Meetings Monthly
  • Executive Committee Meetings Quarterly face-to-face
  • Be a force for good in the local community
  • Provide multiple opportunities for the professional and social development of the membership

  • Finances:
  • Not-for-profit
  • Aim to reduce volatility on savings

Local Jobs

Local job announcements can be posted in the Reflections newsletter. Contact 2015-2016 SGS Editor, Arslan Tashmukhambetov [Arslan Tashmukhambetov] to post in the Reflections newsletter, starting with the next edition coming up in September.