Quantitative Assessment of Resistivity Anisotropy in Evaluation of Laminated Shaly Sand Hydrocarbon Reservoirs–A Case Study in the Barents Sea, Norway
Resistivity anisotropy in shaly sand lamination sequences affects the hydrocarbon evaluation in multiple dimensions of petrophysical logs. Currently, vertical resistivity (Rv) and horizontal resistivity (Rh) from 3D triaxial induction measurements can be applied simultaneously to resolve these petro...
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2019
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ftjafricanj:oai:ojs.ajol.info:article/191722 2023-05-15T15:39:01+02:00 Quantitative Assessment of Resistivity Anisotropy in Evaluation of Laminated Shaly Sand Hydrocarbon Reservoirs–A Case Study in the Barents Sea, Norway Mulaya, Ernest 2019-12-22 application/pdf https://www.ajol.info/index.php/tjs/article/view/191722 eng eng College of Natural and Applied Sciences (CoNAS) of the University of Dar es Salaam (UDSM) https://www.ajol.info/index.php/tjs/article/view/191722/180878 https://www.ajol.info/index.php/tjs/article/view/191722 Copyright for articles published in this journal is retained by the journal.This journal provides immediate open access to its content on the principle that making research freely available to the public supports a greater global exchange of knowledge Tanzania Journal of Science; Vol 45, No 3 (2019); 450-462 2507-7961 0856-1761 Resistivity anisotropy laminated shaly sand triaxial induction measurements density info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article 2019 ftjafricanj 2019-12-29T01:09:59Z Resistivity anisotropy in shaly sand lamination sequences affects the hydrocarbon evaluation in multiple dimensions of petrophysical logs. Currently, vertical resistivity (Rv) and horizontal resistivity (Rh) from 3D triaxial induction measurements can be applied simultaneously to resolve these petrophysical impacts. In this paper, an extensive analysis is offered with a focus on the hydrocarbon evaluation based on advanced petrophysical logs from a well. A critical analysis is done on the three comparable cases including clean formation as a base case, shaly sand case and laminated shaly sand case towards resolving resistivity anisotropy in a typical shaly sand laminated reservoir. The analysis results into potential pay zones of 38.0 m thick of gas and 76 m thick for oil. Furthermore, the results provide an increase in hydrocarbon pore fraction (HCPF) per depth up to 30% in zones with Rv/Rh ratio greater than or equal to 3 compared to conventional evaluation. The study concludes that in a lithology of shale sand laminated sequences, the feasible evaluation technique of hydrocarbon should involve the combination of derived hydrocarbon bearing sand lamina resistivity (Rsand) from horizontal (Rh) and vertical resistivity (Rv) of triaxial induction measurement, refined sand porosity from Thomas Stieber model and associated net to gross using the shaly sand models.Keywords: Resistivity anisotropy; laminated shaly sand; triaxial induction measurements; density; Article in Journal/Newspaper Barents Sea AJOL - African Journals Online Barents Sea Norway |
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Open Polar |
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AJOL - African Journals Online |
op_collection_id |
ftjafricanj |
language |
English |
topic |
Resistivity anisotropy laminated shaly sand triaxial induction measurements density |
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Resistivity anisotropy laminated shaly sand triaxial induction measurements density Mulaya, Ernest Quantitative Assessment of Resistivity Anisotropy in Evaluation of Laminated Shaly Sand Hydrocarbon Reservoirs–A Case Study in the Barents Sea, Norway |
topic_facet |
Resistivity anisotropy laminated shaly sand triaxial induction measurements density |
description |
Resistivity anisotropy in shaly sand lamination sequences affects the hydrocarbon evaluation in multiple dimensions of petrophysical logs. Currently, vertical resistivity (Rv) and horizontal resistivity (Rh) from 3D triaxial induction measurements can be applied simultaneously to resolve these petrophysical impacts. In this paper, an extensive analysis is offered with a focus on the hydrocarbon evaluation based on advanced petrophysical logs from a well. A critical analysis is done on the three comparable cases including clean formation as a base case, shaly sand case and laminated shaly sand case towards resolving resistivity anisotropy in a typical shaly sand laminated reservoir. The analysis results into potential pay zones of 38.0 m thick of gas and 76 m thick for oil. Furthermore, the results provide an increase in hydrocarbon pore fraction (HCPF) per depth up to 30% in zones with Rv/Rh ratio greater than or equal to 3 compared to conventional evaluation. The study concludes that in a lithology of shale sand laminated sequences, the feasible evaluation technique of hydrocarbon should involve the combination of derived hydrocarbon bearing sand lamina resistivity (Rsand) from horizontal (Rh) and vertical resistivity (Rv) of triaxial induction measurement, refined sand porosity from Thomas Stieber model and associated net to gross using the shaly sand models.Keywords: Resistivity anisotropy; laminated shaly sand; triaxial induction measurements; density; |
format |
Article in Journal/Newspaper |
author |
Mulaya, Ernest |
author_facet |
Mulaya, Ernest |
author_sort |
Mulaya, Ernest |
title |
Quantitative Assessment of Resistivity Anisotropy in Evaluation of Laminated Shaly Sand Hydrocarbon Reservoirs–A Case Study in the Barents Sea, Norway |
title_short |
Quantitative Assessment of Resistivity Anisotropy in Evaluation of Laminated Shaly Sand Hydrocarbon Reservoirs–A Case Study in the Barents Sea, Norway |
title_full |
Quantitative Assessment of Resistivity Anisotropy in Evaluation of Laminated Shaly Sand Hydrocarbon Reservoirs–A Case Study in the Barents Sea, Norway |
title_fullStr |
Quantitative Assessment of Resistivity Anisotropy in Evaluation of Laminated Shaly Sand Hydrocarbon Reservoirs–A Case Study in the Barents Sea, Norway |
title_full_unstemmed |
Quantitative Assessment of Resistivity Anisotropy in Evaluation of Laminated Shaly Sand Hydrocarbon Reservoirs–A Case Study in the Barents Sea, Norway |
title_sort |
quantitative assessment of resistivity anisotropy in evaluation of laminated shaly sand hydrocarbon reservoirs–a case study in the barents sea, norway |
publisher |
College of Natural and Applied Sciences (CoNAS) of the University of Dar es Salaam (UDSM) |
publishDate |
2019 |
url |
https://www.ajol.info/index.php/tjs/article/view/191722 |
geographic |
Barents Sea Norway |
geographic_facet |
Barents Sea Norway |
genre |
Barents Sea |
genre_facet |
Barents Sea |
op_source |
Tanzania Journal of Science; Vol 45, No 3 (2019); 450-462 2507-7961 0856-1761 |
op_relation |
https://www.ajol.info/index.php/tjs/article/view/191722/180878 https://www.ajol.info/index.php/tjs/article/view/191722 |
op_rights |
Copyright for articles published in this journal is retained by the journal.This journal provides immediate open access to its content on the principle that making research freely available to the public supports a greater global exchange of knowledge |
_version_ |
1766370478036877312 |