Integrating facies-based Bayesian inversion and supervised machine learning for petro-facies characterization in the Snadd Formation of the Goliat Field, south-western Barents Sea
Seismic petro‐facies characterization in low net‐to‐gross reservoirs with poor reservoir properties such as the Snadd Formation in the Goliat field requires a multidisciplinary approach. This is especially important when the elastic properties of the desired petro‐facies significantly overlap. Pore...
Published in: | Geophysical Prospecting |
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Online Access: | http://hdl.handle.net/11250/2605150 https://doi.org/10.1111/1365-2478.12654 |
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ftngi:oai:ngi.brage.unit.no:11250/2605150 2023-05-15T15:38:50+02:00 Integrating facies-based Bayesian inversion and supervised machine learning for petro-facies characterization in the Snadd Formation of the Goliat Field, south-western Barents Sea Yenwongfai, Honore Dzekamelive Mondol, Nazmul Haque Lecomte, Isabelle Faleide, Jan Inge Leutscher, Johan 2018 application/pdf http://hdl.handle.net/11250/2605150 https://doi.org/10.1111/1365-2478.12654 eng eng Norges forskningsråd: 234152 urn:issn:0016-8025 http://hdl.handle.net/11250/2605150 https://doi.org/10.1111/1365-2478.12654 cristin:1585767 Geophysical Prospecting Peer reviewed Journal article 2018 ftngi https://doi.org/10.1111/1365-2478.12654 2022-10-13T05:49:58Z Seismic petro‐facies characterization in low net‐to‐gross reservoirs with poor reservoir properties such as the Snadd Formation in the Goliat field requires a multidisciplinary approach. This is especially important when the elastic properties of the desired petro‐facies significantly overlap. Pore fluid corrected endmember sand and shale depth trends have been used to generate stochastic forward models for different lithology and fluid combinations in order to assess the degree of separation of different petro‐facies. Subsequently, a spectral decomposition and blending of selected frequency volumes reveal some seismic fluvial geomorphological features. We then jointly inverted for impedance and facies within a Bayesian framework using facies‐dependent rock physics depth trends as input. The results from the inversion are then integrated into a supervised machine learning neural network for effective porosity discrimination. Probability density functions derived from stochastic forward modelling of endmember depth trends show a decreasing seismic fluid discrimination with depth. Spectral decomposition and blending of selected frequencies reveal a dominant NNE trend compared to the regional SE–NW pro‐gradational trend, and a local E–W trend potentially related to fault activity at branches of the Troms‐Finnmark Fault Complex. The facies‐based inversion captures the main reservoir facies within the limits of the seismic bandwidth. Meanwhile the effective porosity predictions from the multilayer feed forward neural network are consistent with the inverted facies model, and can be used to qualitatively highlight the cleanest regions within the inverted facies model. A combination of facies‐based inversion and neural network improves the seismic reservoir delineation of the Snadd Formation in the Goliat Field. Integrating facies-based Bayesian inversion and supervised machine learning for petro-facies characterization in the Snadd Formation of the Goliat Field, south-western Barents Sea submittedVersion ... Article in Journal/Newspaper Barents Sea Finnmark Finnmark Troms Norwegian Geotechnical Institute (NGI) Digital Archive Barents Sea Geophysical Prospecting 67 4 1020 1039 |
institution |
Open Polar |
collection |
Norwegian Geotechnical Institute (NGI) Digital Archive |
op_collection_id |
ftngi |
language |
English |
description |
Seismic petro‐facies characterization in low net‐to‐gross reservoirs with poor reservoir properties such as the Snadd Formation in the Goliat field requires a multidisciplinary approach. This is especially important when the elastic properties of the desired petro‐facies significantly overlap. Pore fluid corrected endmember sand and shale depth trends have been used to generate stochastic forward models for different lithology and fluid combinations in order to assess the degree of separation of different petro‐facies. Subsequently, a spectral decomposition and blending of selected frequency volumes reveal some seismic fluvial geomorphological features. We then jointly inverted for impedance and facies within a Bayesian framework using facies‐dependent rock physics depth trends as input. The results from the inversion are then integrated into a supervised machine learning neural network for effective porosity discrimination. Probability density functions derived from stochastic forward modelling of endmember depth trends show a decreasing seismic fluid discrimination with depth. Spectral decomposition and blending of selected frequencies reveal a dominant NNE trend compared to the regional SE–NW pro‐gradational trend, and a local E–W trend potentially related to fault activity at branches of the Troms‐Finnmark Fault Complex. The facies‐based inversion captures the main reservoir facies within the limits of the seismic bandwidth. Meanwhile the effective porosity predictions from the multilayer feed forward neural network are consistent with the inverted facies model, and can be used to qualitatively highlight the cleanest regions within the inverted facies model. A combination of facies‐based inversion and neural network improves the seismic reservoir delineation of the Snadd Formation in the Goliat Field. Integrating facies-based Bayesian inversion and supervised machine learning for petro-facies characterization in the Snadd Formation of the Goliat Field, south-western Barents Sea submittedVersion ... |
format |
Article in Journal/Newspaper |
author |
Yenwongfai, Honore Dzekamelive Mondol, Nazmul Haque Lecomte, Isabelle Faleide, Jan Inge Leutscher, Johan |
spellingShingle |
Yenwongfai, Honore Dzekamelive Mondol, Nazmul Haque Lecomte, Isabelle Faleide, Jan Inge Leutscher, Johan Integrating facies-based Bayesian inversion and supervised machine learning for petro-facies characterization in the Snadd Formation of the Goliat Field, south-western Barents Sea |
author_facet |
Yenwongfai, Honore Dzekamelive Mondol, Nazmul Haque Lecomte, Isabelle Faleide, Jan Inge Leutscher, Johan |
author_sort |
Yenwongfai, Honore Dzekamelive |
title |
Integrating facies-based Bayesian inversion and supervised machine learning for petro-facies characterization in the Snadd Formation of the Goliat Field, south-western Barents Sea |
title_short |
Integrating facies-based Bayesian inversion and supervised machine learning for petro-facies characterization in the Snadd Formation of the Goliat Field, south-western Barents Sea |
title_full |
Integrating facies-based Bayesian inversion and supervised machine learning for petro-facies characterization in the Snadd Formation of the Goliat Field, south-western Barents Sea |
title_fullStr |
Integrating facies-based Bayesian inversion and supervised machine learning for petro-facies characterization in the Snadd Formation of the Goliat Field, south-western Barents Sea |
title_full_unstemmed |
Integrating facies-based Bayesian inversion and supervised machine learning for petro-facies characterization in the Snadd Formation of the Goliat Field, south-western Barents Sea |
title_sort |
integrating facies-based bayesian inversion and supervised machine learning for petro-facies characterization in the snadd formation of the goliat field, south-western barents sea |
publishDate |
2018 |
url |
http://hdl.handle.net/11250/2605150 https://doi.org/10.1111/1365-2478.12654 |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
Barents Sea Finnmark Finnmark Troms |
genre_facet |
Barents Sea Finnmark Finnmark Troms |
op_source |
Geophysical Prospecting |
op_relation |
Norges forskningsråd: 234152 urn:issn:0016-8025 http://hdl.handle.net/11250/2605150 https://doi.org/10.1111/1365-2478.12654 cristin:1585767 |
op_doi |
https://doi.org/10.1111/1365-2478.12654 |
container_title |
Geophysical Prospecting |
container_volume |
67 |
container_issue |
4 |
container_start_page |
1020 |
op_container_end_page |
1039 |
_version_ |
1766370210604908544 |