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GST October Luncheon

When
October 31, 2024
11:30 AM - 1:00 PM
Location
Baxter's InterUrban Grill and online option

Registration

Geoscience student
GST Member – $20.00
Non - Member – $25.00
TGS Member – $20.00
In-person attendance at Baxter's available for TGS members at GST member price.
Virtual Attendee

Registration is closed

Geophysical Society of Tulsa

October 31st, 2024 Luncheon

Online link https://meet.google.com/caz-ycax-mas

Using probabilistic inversion to understand a stratigraphic sequence in a poorly resolved unconventional reservoir

ABSTRACT:

Probabilistic inversion approaches provide a framework for encoding stratigraphic sequences into inverse problems. As a result, the findings of this form of inversion provide not just a comprehension of the distribution of extremely slight changes in facies type, but also a probabilistic understanding of the transition between stratigraphic subunits. In this talk, we show how probabilistic inversion may invert stratigraphic units as well as lithology. The inversion's flexible geologic framework allows us to adjust facies definitions so that we may ask more complicated and specialized questions during the inverse process. In particular, unconventional resource plays are characterized by subtle lithofacies changes with mineralogical variations of 10% and porosity variations of less than 3% that result in a high degree of overlap in elastic property space. In this case study, we show how they can be separated if we supplement the problem with auxiliary data such as facies thickness, transition statistics, and stratigraphic ordering rules. As a result, it is possible to discern both lithofacies variability and internal stratigraphic structures even when seismic resolution is restricted and seismic noise levels are high.

BIOGRAPHY:

Raul Cova received his B.Sc. in Geophysics in 2004 from Simon Bolivar University in Venezuela. Between 2004 and 2012 he worked for PDVSA occupying roles related to seismic data acquisition, processing, and interpretation. He obtained his Ph.D. at the University of Calgary in 2017 where he was a fellow of the CREWES consortium. He continued at the University of Calgary as a Postdoctoral Researcher working on full-waveform inversion problems. Raul joined Qeye in Calgary in 2019 where he is now a Team Lead specializing in AVO inversion and advanced reservoir characterization techniques.

"Geophysical Society of Tulsa (GST)" is a 501(c)3 non-profit organization. Oklahoma, P.O. Box 2784, Tulsa, OK 174101