Assessing FWI imagings potential to tackle illumination issues and internal multiples in the Brazilian presalt

Cyril Dolymnyj, Filipe Rudrigues, Amanda Porto, Leandro Galves, Asdrubal Ovalles

International Meeting for Applied Geoscience and Energy (IMAGE)

... al., 2020). This process converts high-resolution velocity models obtained by FWI into reflectivity images. Here, we show that it can address...

RTM method of prismatic-waves under the undulating surface: A case study of the Longmen Piedmont

Bo Ma, Yingming Qu, Zhenchun Li, Jianggui Zhu, Chang Liu

International Meeting for Applied Geoscience and Energy (IMAGE)

... that sufficiently avoids primary reflections. He believes that using the reverse time migration result as the reflectivity model, using the Born approximation...

A new reverse time migration denoising method based on diffusion filtering with X-shaped denoising operator

Chongpeng Huang, Yingming Qu, Zhenchun Li

International Meeting for Applied Geoscience and Energy (IMAGE)

... 18 shots with shot interval of 200m. The Marmousi velocity and true reflectivity models are shown in Figure 2 and Figure 3, respectively. One of 18...

Validation of seismic attributes as hydrocarbon indicators

Natt Srisutthiyakorn, Katy Wei, Antoine Vial Aussavy, Ahmad Zamanian, Olga Rodina, Stephan Gelinsky

International Meeting for Applied Geoscience and Energy (IMAGE)

... thresholds (derived from different percentiles) on the seismic reflectivity background. Cross-sections are populated at every well intersection...

An Integrated Geophysical Analysis of Crustal Structure in the Wichita Uplift Region of Southern Oklahoma

Amanda Rondot Buckey

Oklahoma City Geological Society

... that the Wichita Uplift is generally seismically transparent, though several reflectors are identifiable. A zone of increased reflectivity, possibly...

ABSTRACT: Vitrinite Reflectance Measurements Taken Through the Cover Glass of Visual Kerogen Slides

Karl W. Schwab

The Society for Organic Petrology (TSOP)

... Wood Dr., Houston, Texas K a r W. Schwab, Geo-Strat, I n c . , 10615 Shadow Dr., It is standard practice to take reflectivity measurements from It i...

Elastic multiparameter full-waveform inversion application on sparse ocean-bottom node data

Denes Vigh, Xin Cheng, Bing Bai, Zongcai Feng, Kate Glaccum

International Meeting for Applied Geoscience and Energy (IMAGE)

... striking if we compare Figure 1b versus 1c. The FWI-derived reflectivity (FDR) which is enabled by the elastic inversion, shows improved steep-dip imaging...

Generalization Capability of Data-driven Deep Learning Models for Seismic Full-waveform Inversion: An Example Using the OpenFWI Dataset

Ayrat Abdullin, Umair Bin Waheed

International Meeting for Applied Geoscience and Energy (IMAGE)

... of both methods and demonstrates their effectiveness in solving ill-posed and nonlinear problems, using reflectivity inversion as a specific example...

High-frequency FWI on Clair OBN dataset Challenges and successes

Matvey Romanenko, Lee Saxton, Dan Davies, James Sheng, Faqi Liu, Jan Gromotka, Yang He

International Meeting for Applied Geoscience and Energy (IMAGE)

...-fidelity reflectivity image, FWI Imaging, is derived. It can be used as a complementary or even as an alternative product to Kirchhoff, RTM or LSM...

An acoustic wave equation with the gradients of velocity and density

Jianyong Bai, Orhan Yilmaz

International Meeting for Applied Geoscience and Energy (IMAGE)

.... Ramos-Martinez, Y. Yang, and A. A. Valenciano, 2020, Seismic modeling with vector reflectivity: 90th Annual International Meeting, SEG, Expanded...

FWI imaging of complex subsalt Mesozoic targets from land to shallow waters

Timmy Dy, Minshen Wang, Sabaresan Mothi, Don Dobesh, Shengda Ding, Oscar Andrade, Pablo Ortega, Alfredo Vázquez Cantú, Silvino Domínguez García, Gerardo López Leyva

International Meeting for Applied Geoscience and Energy (IMAGE)

... Imaging further naturally harmonized the various data types by inverting for a common subsurface reflectivity, resulting in a more geophysically accurate...

Prestack Seismic Data Inversion for Shale Gas Reservoir Characterization in China

Gang Yu, Yusheng Zhang, Ximing Wang, Xing Liang, Uwe Strecker, Maggie Smith

Unconventional Resources Technology Conference (URTEC)

... at the well location. Wavelet extraction Wavelets link the amplitude and frequency of each angle stack to reflectivity. Wavelets may be extracted...

Characterization of Seismic Anomalies using Converted Waves: A Case History from East Natuna Basin

Lotfi Ben-Brahim, Ronan Petton, Michel Couderc, Agus Djamhoer

Indonesian Petroleum Association

... an indication on the nature of the seismic events of interest, fluid or lithology related. Furthemore, the seismic reflectivity (acoustic impedance...

Geological Society of Malaysia Newsletter Number 42 (May 1973)

B. K. Tan editor

Geological Society of Malaysia (GSM)

... and Burke (op. cit., p. 68) and with those of ~cLeod and Chamberlain (1968) who, in their table, indicate that the reflectivity ofirh,.e: species in question...

Calibrating FWI image amplitudes: Insights from deepwater GoM

Lennon Infante-Paez, Nayyer Islam

International Meeting for Applied Geoscience and Energy (IMAGE)

... Waveform Inversion (FWI) derived reflectivity (FDR) data from the Deepwater Gulf of Mexico. Based on seismic well ties, fluid substitution and 2D seismic...

Elastic full-waveform inversion at regional scale for the northern Gulf of Mexico

Yao Yu, Anastasia Pavlovskaya, Kim Shoemaker, Hongyan Li, Jennifer Qin, David Derharoutian Jr., John Law, Zhao Ge, Ruth Hammans, Vivian Robertson, Kate Glaccum

International Meeting for Applied Geoscience and Energy (IMAGE)

... iteration of RTM. In Figure 2, we compare the 14-Hz elastic FWI updated velocities and FWI-derived reflectivity (FDR) to the starting model and initial...

Full waveform inversion of simultaneous long-offset data

Nizar Chemingui, Alejandro A. Valenciano, Andrew Long

Petroleum Exploration Society of Australia (PESA)

... gradient that eliminates the migration isochrones; thereby removing the reflectivity imprint from the model updates. The FWI application to the field survey...

A more automated footprint removal for full-waveform inversion

David F. Halliday, James Xu, Soumya Roy

International Meeting for Applied Geoscience and Energy (IMAGE)

... for interpretation – particularly as the industry continues to adopt the use of finite-difference reflectivity images that are derived directly from FWI...

Subsalt imaging using elastic FWI: A case study from Walker Ridge, Gulf of Mexico

Chirag Parekh, Andrew Stephenson, Juan Perdomo, Claudia Flores, Christopher McMorland, Matt Vander Griend, Austin Boles, Andrew Fuhrmann

International Meeting for Applied Geoscience and Energy (IMAGE)

... acquisition geometry, to leverage FWI derived reflectivity images (Bai, 2022) Results In the Walker Ridge region, reservoirs are found in the ultradeepwater...

Prospect Identification Using AVO Inversion and Lithology Prediction

Brad Bailey, Frazer Barclay, Robert Nesbit, Andrea Paxton

Petroleum Exploration Society of Australia (PESA)

... reflectivity logs. By Rock physics and lithology prediction cube and can be seen just below 2.2 s TWT. Acoustic impedance and Poisson's ratio logs...

Consideration to Data Driven Solutions for the Acquisition of New Marine 3D Seismic Data

Julie Willmore, Brad Torry, Henrik Roende, Chris Egger, Adriana Thames

GCAGS Transactions

... salt was interpreted at 10,000 m depth. Given the lack of strong coherent subsalt reflectivity, the subsalt horizon was modeled as both a flat reflector...

Visible Spectroscopy--A Rapid Method for Determining Hematite and Goethite Concentration in Geological Materials: RESEARCH METHOD PAPER

Bobby C. Deaton, William L. Balsam

Journal of Sedimentary Research (SEPM)

..., AND LAUER, H.V., JR., 1990, Matrix effects for reflectivity spectra of dispersed nanophase (superparamagnetic) hematite with application to Martian...

Above-Bottom Acoustic Reflections, Mississippi River Delta: GEOLOGICAL NOTES

L. D. Wright

AAPG Bulletin

... surface. Seaward of the passes, above-bottom reflectivity has been observed at all depths and at all river stages. Bates (1953b) and Holle (1952...

What if you need seismic to understand your geological model? Exploration in the UK Southern North Sea Rotliegend Transition Zone; #90017 (2003)

Hubert J. M. Dejong, Richard Knight, Ray McClenaghan, Franek Mrozek

Search and Discovery.com

... by intraRotliegend seismic interpretation and attribute analysis, both on depth migrated reflectivity and acoustic impedance data. The analysis...

Characterizing the Near Surface with VSP and Well Logs

Search and Discovery.com

... wavelet was designed. From the sonic and density log, impedance and reflectivity was estimated (Figure 3a). The reflectivity function and the designed...