The Southeastern Geophysical Society

SGS Monthly Technical Luncheon

Please join the Southeastern Geophysical Society on Thursday, May 20th @ 11:30-1:00 for our virtual monthly technical luncheon. This month's authors will be Tatiana Kalinicheva PhD, who will present "Full bandwidth FWI."

Please see the Zoom meeting details, presentation abstract, and speaker bio below.

Please RSVP to reynoldsken29@gmail.com if you are planning to attend. To pay online for your luncheon, see paypal below:

SGS Technical Luncheon

Title

Full bandwidth FWI

Speaker

Tatiana Kalinicheva PhD

Abstract

FWI is widely used to generate high-resolution models of sub-surface physical properties, especially p-wave velocity. Although FWI-generated velocity models have a variety of possible applications, they are most often used as part of a wider velocity-building workflow for subsequent pre-stack depth migration using Kirchhoff or wave-equation based migration. However, in the early development of FWI, a key strategic objective was also to replace conventional seismic processing, velocity-model building and migration entirely by running FWI on raw data to full seismic bandwidth. In the event, the full capabilities of FWI have not yet been exploited in the way that its early champions envisioned. In this paper, we demonstrate the practicality of their vision applied to deep-water marine field data.

In principle, with enough compute power and with a sufficiently accurate inversion algorithm, there should be no need to process seismic data. Instead it should be possible to create a model of the subsurface that predicts the unprocessed raw seismic data to within the noise level, and that consequently acts as a direct replacement for a conventional PSDM volume. In this paper, we demonstrate exactly that outcome, applying FWI at 100 Hz directly to unprocessed field data from a towed-streamer marine dataset. We differentiate the resultant FWI velocity model vertically in space, and compare the result of this directly with the results of conventional PSDM. Our full-bandwidth FWI result is broader band than the PSDM section at both high and low frequencies, and appears to be better resolved vertically. When run on the cloud, this approach is capable of generating a full high-quality PSDM volume for narrow-azimuth towed-streamer data within a few days of data acquisition.

Bio

Tatiana Kalinicheva is a PhD graduate from Fullwave research group at Imperial College London. Her PhD was focused on application of FWI to “difficult” datasets, where inversion seemed to produce the wrong answer or failed completely. Before that she has completed a master's degree in Geophysics at Imperial and a bachelor degree in Geoscience at Moscow State University. She has a keen interest in depth model building and has previously given a talk about 2D vs 3D FWI at SEG 2017.

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SGS will be having our winter social TBD

Education

Education events TBD

Scholarships

Download an 2021 SGS Scholarship Application form to apply. Scholarships are made possible by corporate donations and member sponsorship of Golf Tournament and 2021 Wine and Cheese event.

Don't forget scholarship applications are due April 30th!

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.

Scholarship Application Process:
1. Complete the scholarship application form
2. 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).
3. Deliver the application form and supporting documents to a member of the Scholarship Committee via hand delivery, email or mail-in.

The 2020-2021 SGS Scholarship Committee Members are:

Joshua Richardson, Current SGS President (JRichardson@chevron.com)
Ken Reynolds, Past SGS President (reynoldsken29@gmail.com)
Ellen Clark Reynolds, Prior Past SGS President (EllenClark@chevron.com)
Eric Zimmerman, University Liason (ericz@llog.com)


4. 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.

If you are unable to participate in the SGS Fundraising Golf Tournament or 2021 Wine and Cheese event, 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. Due to the success of our annual golf tournament/Wine andd Cheese scholarship fundraisers, this year we were able to fund three scholarships.

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

2021 SGS Spring Acquistapace’s Wine/Cheese Scholarship Event

WHEN: Thursday, March 25, 2021

WHERE: In your home virtual event, supplies provided

WHY: To Engage SGS members in a safe social activity (virtual) and continue to support student scholarships during exceptionally challenging times

WHAT: We virtually share imported 2 wines/2 cheeses and learn about their history, how they are made, and how they are best enjoyed by the experts who imported them for Acquistapace’s, while helping to continue our student scholarship program. For each wine/cheese package, we are charging $95 and encourage those who are willing and able to make additional contributions directly to the scholarship fund.

REGISTER: 2021 Wine & Cheese Form

EMAIL: JRichardson@chevron.com

COST: $95 per package

PAYMENT: Paypal (Below) or via check to P.O. Box 57141, New Orleans, LA 70157

Wine and Cheese Scholarship Fundraiser

SGS Scholarship Fund Donation

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