Publication profile

Ariel Almendral Vazquez

Name:	Ariel Almendral Vazquez
Title:	Seniorforsker / Senior Research Scientist
Phone:	(+47) +47 22 85 26 46
Email:	ariel [at] nr [dot] no
Scientific areas:	Petroleum reservoir modelling, Geological faults and surfaces, Petroleum exploration, EM inversion, Monte Carlo simulation
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Academic article

2022

Almendral Vazquez, Ariel; Dahle, Pål; Abrahamsen, Petter; Sektnan, Audun. Conditioning geological surfaces to horizontal wells. Computational Geosciences (ISSN 1420-0597). doi: 10.1007/s10596-022-10154-6. 2022.

2015

Abrahamsen, Petter; Dahle, Pål; Hauge, Vera Louise; Almendral Vazquez, Ariel; Vigsnes, Maria. Surface prediction using rejection sampling to handle non-linear constraints. Bulletin of Canadian petroleum geology (ISSN 0007-4802). 63(4) pp 304-317. doi: 10.2113/gscpgbull.63.4.304. 2015.

Almendral-Vazquez, Ariel; Robles, Wilmer; Parra, Mauricio; Mora, Andrés; Ketcham, Richard A.; Raghib, Michael. FetKin: Coupling kinematic restorations and temperature to predict thrusting, exhumation histories, and thermochronometric ages. American Association of Petroleum Geologists Bulletin (ISSN 0149-1423). 99(8) pp 1557-1573. doi: 10.1306/07071411112. 2015.

Mora, Andrés; Casallas, Wilson; Ketcham, Richard A.; Gomez, Diego; Parra, Mauricio; Namson, Jay; Stockli, Daniel; Almendral-Vazquez, Ariel; Robles, Wilmer; Ghorbal, Badr. Kinematic restoration of contractional basement structures using thermokinematic models: A key tool for petroleum system modeling. American Association of Petroleum Geologists Bulletin (ISSN 0149-1423). 99(8) doi: 10.1306/04281411108. 2015.

2009

Almendral-Vazquez, Ariel; Nielsen, Bjørn Fredrik. The multigrid algorithm applied to a degenerate equation: A convergence analysis. Journal of Computational and Applied Mathematics (ISSN 0377-0427). 225(1) pp 251-267. doi: 10.1016/j.cam.2008.07.026. 2009.

2007

Almendral-Vazquez, Ariel; Oosterlee, Cornelis. On American options under the Variance Gamma process. Applied Mathematical Finance (ISSN 1350-486X). 2007.

Almendral-Vazquez, Ariel; Oosterlee, Cornelis. Accurate Evaluation of European and American Options Under the CGMY Process. SIAM Journal on Scientific Computing (ISSN 1064-8275). 29.01.2012 pp 93-117. 2007.

2006

Almendral-Vazquez, Ariel; Oosterlee, Cornelis. Highly accurate evaluation of European and American options under the Variance Gamma process. Journal of Computational Finance (ISSN 1460-1559). 01.10.2012 pp 21-40. 2006.

2005

Almendral-Vazquez, Ariel; Oosterlee, Cornelis. Numerical valuation of options with jumps in the underlying. Applied Numerical Mathematics (ISSN 0168-9274). 53(1) pp 1-18. doi: 10.1016/j.apnum.2004.08.037. 2005.

2003

Almendral-Vazquez, Ariel. Nevanlinna parametrization of the solution to some rational moment problems. Analysis (ISSN 0003-2638). 23 pp 107-124. 2003. Fulltekst

2000

Almendral-Vazquez, Ariel. The Spectrum of a Periodic Complex Jacobi Matrix Revisited. Journal of Approximation Theory (ISSN 0021-9045). 105 pp 344-351. 2000. Fulltekst

Academic chapter/article/Conference paper

2022

Sektnan, Audun; Almendral Vazquez, Ariel; Hauge, Ragnar; Aarnes, Ingrid; Skauvold, Jacob; Vevle, Markus Lund. A Tree Representation of Plurigaussian Truncation Rules. In: Proceedings of the European Conference on the Mathematics of Geological Reservoirs (ECMOR 2022). (ISBN 0-000-00001-9). doi: 10.3997/2214-4609.202244066. 2022.

2019

Parra, Mauricio; Echeverri, Sebastian; Patino, Ana Maria; Ramirez, Juan Carlos; Mora, Andrés; Sobel, Edward R.; Almendral Vazquez, Ariel; Pardo-Trujillo, Andrés. Cenozoic Evolution of the Sierra Nevada de Santa Marta, Colombia. In: The geology of Colombia Volume 3. Paleogene – Neogene. (ISBN 978-958-99528-6-3). pp 259-297. doi: 10.32685/pub.esp.37.2019.07. 2019. Fulltekst

Patino, Ana Maria; Parra, Mauricio; Ramirez, Juan Carlos; Sobel, Edward R.; Glodny, Johannes; Almendral Vazquez, Ariel; Echeverri, Sebastian. Thermochronological constraints on Cenozoic exhumation along the southern Caribbean: The Santa Marta range, northern Colombia. In: Andean Tectonics. (ISBN 978-0-12-816009-1). pp 103-132. doi: 10.1016/B978-0-12-816009-1.00007-1. 2019. Omtale

2016

Røe, Per; Almendral Vazquez, Ariel; Hanea, Remus Gabriel. Distinguishing Signal from Noise in History Matching - Analysis of Ensemble Collapse on a Synthetic Data Set. In: ECMOR XV - Proceedings of 15th European Conference on the Mathematics of Oil Recovery, Amsterdam, Netherlands, 29 August - 1 September, 2016. (ISBN 978-94-6282-193-4). doi: 10.3997/2214-4609.201601819. 2016.

2008

Almendral-Vazquez, Ariel; Abrahamsen, Petter; Hauge, Ragnar. Multidimensional Scaling and Anisotropic Covariance Functions. In: Proceedings of the Eight International Geostatistics Congress. (ISBN 978-956-8504-17-5). pp 187-196. 2008.

Academic lecture

2022

Oakley, David Owen Smith; Cardozo, Nestor; Røe, Per; Almendral Vazquez, Ariel. Structural Geologic Modelling and Restoration Using the Ensemble Kalman Filter. EGU General Assembly 2022; Vienna, 5/23/2022 - 5/27/2022. Sammendrag

2016

Røe, Per; Almendral Vazquez, Ariel; Hanea, Remus Gabriel. Distinguishing Signal from Noise in History Matching - Analysis of Ensemble Collapse on a Synthetic Data Set. ECMOR XV; Amsterdam, 8/29/2016 - 9/1/2016.

2015

Dahle, Pål; Abrahamsen, Petter; Almendral-Vazquez, Ariel. Simultaneous prediction of geological surfaces and well paths. Petroleum Geostatistics 2015; Biarritz, 9/7/2015 - 9/11/2015. Fulltekst

Almendral-Vazquez, Ariel; Abrahamsen, Petter; Dahle, Pål; Hermansen, Gudmund Horn. A continuous model for well depths: theory and application to well repositioning. Det 18. norske statistikarmøtet – Solstrand 2015; Solstrand, Bergen, 6/15/2015.

2014

Abrahamsen, Petter; Dahle, Pål; Hauge, Vera Louise; Almendral-Vazquez, Ariel; Vigsnes, Maria. Surface prediction using rejection sampling to handle non-linear relationships. 2014 Gussow Geosciences Conference - Closing the Gap II; Banff, 9/22/2014 - 9/24/2014.

2004

Almendral-Vazquez, Ariel; Oosterlee, Cornelis; Leentvaar, C.W.. Pricing options with discrete dividends by high order finite differences and grid stretching. Computational Methods in Applied Sciences and Engineering ECCOMAS 2004, 7/24/2004.

2003

Almendral-Vazquez, Ariel; Nielsen, Bjørn Fredrik. The multigrid algorithm applied to the discretized Black and Scholes equation; a convergence analysis. 11th GAMM-Workshop on Multigrid and Hierarchic Solution Techniques, 8/25/2003.

2001

Holden, Lars; Nielsen, Bjørn Fredrik; Mostad, Petter Fredrik; Skorstad, Arne; Almendral-Vazquez, Ariel; Ottesen, Signe; Townsend, Chris. A stochastic structural model. Modelling Permeable Rocks; Cambridge, Enland, 3/1/2001. Fulltekst

Holden, Lars; Nielsen, Bjørn Fredrik; Almendral-Vazquez, Ariel; Townsend, Chris. Stochastic structural modeling in Havana. 63rd EAGE conference; Amsterdam, The Netherlands, 6/13/2001.

Lecture

2019

Sektnan, Audun; Dahle, Pål; Almendral Vazquez, Ariel; Abrahamsen, Petter. Getting the zonation right. A synthetic real-time case study. COHIBA workshop 2019; Oslo, 11/5/2019 - 11/6/2019.

Almendral Vazquez, Ariel; Abrahamsen, Petter; Dahle, Pål; Sektnan, Audun. Getting the most out of your deep directional resistivity data. Cohiba workshop 2019; Oslo, 11/5/2019 - 11/6/2019.

Almendral Vazquez, Ariel; Abrahamsen, Petter; Dahle, Pål; Sektnan, Audun. A novel implementation of the LinVel model. Cohiba workshop 2019; Oslo, 11/5/2019 - 11/6/2019.

Fjellvoll, Bjørn; Hauge, Ragnar; Almendral Vazquez, Ariel; Abrahamsen, Petter; Skauvold, Jacob. Applied Geostatistics and Geomodelling 2019. Kurs for Equinor; Stavanger, 9/8/2019 - 9/11/2019.

Dahle, Pål; Abrahamsen, Petter; Almendral Vazquez, Ariel. Handling true vertical depth (TVD) uncertainty in wells. COHIBA workshop 2019; Oslo, 11/5/2019 - 11/6/2019.

2016

Fjellvoll, Bjørn; Abrahamsen, Petter; Hauge, Ragnar; Almendral Vazquez, Ariel. Geostatistics course. Kurs for Statoil; Bergen, 11/7/2016 - 11/10/2016.

2015

Fjellvoll, Bjørn; Hauge, Ragnar; Abrahamsen, Petter; Almendral-Vazquez, Ariel. Four days course in Geostatistics and Advanced Geomodelling. Geostatkurs for Statoil; Stavanger, 11/10/2015 - 11/13/2015.

Dahle, Pål; Abrahamsen, Petter; Almendral-Vazquez, Ariel. Simultaneous prediction of geological surfaces and well paths. Roxar Technology Day; Stavanger, 10/28/2015.

Report

2020

Almendral Vazquez, Ariel; Dahle, Pål; Abrahamsen, Petter. Compendium of Linvel formulas used in Cohiba. Norsk Regnesentral. NR-notat SAND/02/20. pp 9. 2020.

Abrahamsen, Petter; Dahle, Pål; Kvernelv, Vegard Berg; Sektnan, Audun; Almendral Vazquez, Ariel; Aarnes, Ingrid. COHIBA User Manual Version 6.1. Norsk Regnesentral. NR-notat SAND/05/20. pp 245. 2020.

2019

Sektnan, Audun; Almendral Vazquez, Ariel; Dahle, Pål. Correlating intervals that share common reference surface. Norsk Regnesentral. NR-notat SAND/03/2019. pp 13. 2019.

Almendral Vazquez, Ariel; Aarnes, Ingrid; Abrahamsen, Petter. Application of NR’s Solutions to Geothermal Reservoir Characterization. Norsk Regnesentral. NR-notat SAND/13/2019. pp 13. 2019.

Abrahamsen, Petter; Dahle, Pål; Kvernelv, Vegard Berg; Sektnan, Audun; Almendral Vazquez, Ariel; Aarnes, Ingrid. COHIBA User Manual Version 6.0. Norsk Regnesentral. NR-notat SAND/06/2019. pp 235. 2019.

Dahle, Pål; Aarnes, Ingrid; Abrahamsen, Petter; Almendral Vazquez, Ariel; Sektnan, Audun. Increasing subsurface accuracy with COHIBA by taking advantage of resistivity contrasts. Norsk Regnesentral. NR-notat SAND/04/2019. pp 12. 2019.

Aarnes, Ingrid; Almendral Vazquez, Ariel; Dahle, Pål. COHIBA in fault blocks on Valhall. Norsk Regnesentral. NR-notat SAND/09/19. pp 51. 2019.

2018

Almendral Vazquez, Ariel; Dahle, Pål; Sektnan, Audun. Valhall study using Cohiba. Norsk Regnesentral. NR-notat SAND/06/18. 2018.

Abrahamsen, Petter; Almendral Vazquez, Ariel; Dahle, Pål; Kvernelv, Vegard Berg; Sektnan, Audun. Cohiba User Manual Version 5.6. Norsk Regnesentral. NR-notat SAND/07/2018. pp 225. 2018. Fulltekst

Dahle, Pål; Almendral Vazquez, Ariel; Abrahamsen, Petter. COHIBA and velocity models linear in depth. Norsk Regnesentral. NR-notat SAND/08/2018. pp 12. 2018.

Aarnes, Ingrid; Almendral Vazquez, Ariel; Dahle, Pål. Valhall structural model with COHIBA. Norsk Regnesentral. NR-notat SAND/12/18. pp 71. 2018.

2017

Abrahamsen, Petter; Dahle, Pål; Kvernelv, Vegard Berg; Sektnan, Audun; Almendral Vazquez, Ariel. Cohiba User Manual Version 5.5. Norsk Regnesentral. NR-notat SAND/05/2017. pp 217. 2017. Fulltekst

Almendral Vazquez, Ariel; Zdanowicz, Hanna Marta. Localization strategies: Implementation and testing of localization strategies on Reek and Norne. Norsk Regnesentral. NR-notat SAND/01/2017. 2017.

2016

Røe, Per; Almendral Vazquez, Ariel. Diagnostics and countermeasures for ensemble collapse - Testing of localization as a measure to prevent ensemble collapse when history matching Reek and Norne. Norsk Regnesentral. NR-notat SAND/01/2016. pp 41. 2016.

Almendral Vazquez, Ariel; Sektnan, Audun. The ISCWSA model essentials and implementation. Norwegian Computing Center. NR-notat SAND/04/16. 2016.

Abrahamsen, Petter; Dahle, Pål; Hauge, Vera Louise; Hermansen, Gudmund Horn; Kvernelv, Vegard Berg; Almendral Vazquez, Ariel. Cohiba User Manual Version 5.4. Norsk Regnesentral. NR-notat SAND/11/2016. pp 217. 2016.

2015

Abrahamsen, Petter; Dahle, Pål; Hauge, Vera Louise; Hermansen, Gudmund Horn; Vigsnes, Maria; Almendral Vazquez, Ariel. Cohiba User Manual, Version 5.1. Norsk Regnesentral. NR-notat SAND/01/2015. pp 214. 2015. Fulltekst

Dahle, Pål; Abrahamsen, Petter; Almendral-Vazquez, Ariel. Surface modelling in fault blocks using COHIBA: A feasibility study. Norsk Regnesentral. NR-notat SAND/14/15. pp 21. 2015.

Abrahamsen, Petter; Dahle, Pål; Hauge, Vera Louise; Hermansen, Gudmund Horn; Vigsnes, Maria; Almendral-Vazquez, Ariel. Cohiba User Manual Version 5.3. Norsk Regnesentral. NR-notat SAND/13/2015. pp 222. 2015. Fulltekst

Abrahamsen, Petter; Dahle, Pål; Hauge, Vera Louise; Hermansen, Gudmund Horn; Vigsnes, Maria; Almendral-Vazquez, Ariel. Cohiba User Manual Version 5.2. Norsk Regnesentral. NR-notat SAND/05/2015. pp 217. 2015. Fulltekst

Almendral-Vazquez, Ariel; Vigsnes, Maria. Depth Conversion on the Gohta Oil Field – using Cohiba. Norsk Regnesentral. NR-notat SAND/12/15. pp 16. 2015.

2012

Almendral-Vazquez, Ariel; Dahle, Pål; Abrahamsen, Petter; Georgsen, Frode; Myrseth, Inge. Cohiba User Manual Version 3.1.1. Norsk Regnesentral. NR-notat SAND/07/2012. pp 155. 2012. Omtale

2011

Abrahamsen, Petter; Almendral-Vazquez, Ariel; Dahle, Pål; Georgsen, Frode; Myrseth, Inge. Cohiba user manual version 3.0. Norsk Regnesentral. NR-notat SAND/18/2011. pp 162. 2011.

Almendral-Vazquez, Ariel; Dahle, Pål; Abrahamsen, Petter; Georgsen, Frode; Myrseth, Inge Bjørn. Cohiba user manual Version 2.5. Norsk Regnesentral. NR-notat SAND/13/2011. pp 144. 2011.

Almendral-Vazquez, Ariel; Dahle, Pål; Abrahamsen, Petter; Georgsen, Frode; Myrseth, Inge Bjørn. COHIBA user manual - Version 2.3. Norsk Regnesentral. NR-notat SAND/05/2011. pp 135. 2011.

Almendral-Vazquez, Ariel; Abrahamsen, Petter; Dahle, Pål; Georgsen, Frode; Myrseth, Inge Bjørn. COHIBA user manual - Version 2.4. Norsk Regnesentral. NR-notat SAND/08/2011. pp 139. 2011.

2010

Almendral-Vazquez, Ariel; Dahle, Pål; Abrahamsen, Petter; Skorstad, Arne; Georgsen, Frode; Myrseth, Inge. COHIBA user manual — Version 2.2. Norsk Regnesentral. NR-notat SAND/13/2010. pp 127. 2010. Fulltekst

Almendral-Vazquez, Ariel; Dahle, Pål; Abrahamsen, Petter; Skorstad, Arne; Georgsen, Frode; Myrseth, Inge. COHIBA user manual — Version 2.1. Norsk Regnesentral. NR-notat SAND/12/2010. pp 125. 2010. Fulltekst

Almendral-Vazquez, Ariel; Dahle, Pål; Abrahamsen, Petter; Skorstad, Arne; Georgsen, Frode; Myrseth, Inge. COHIBA user manual - Version 2.0. Norsk Regnesentral. NR-notat SAND/01/2010. 2010. Fulltekst

2009

Røe, Per; Hauge, Ragnar; Almendral-Vazquez, Ariel. Choice of linear algebra libraries for NRLib. Norsk Regnesentral. NR-notat SAND/02/09. pp 11. 2009. Fulltekst

Røe, Per; Georgsen, Frode; Abrahamsen, Petter; Almendral-Vazquez, Ariel. Surface based fault format in Havana. Norsk Regnesentral. NR-notat SAND/01/09. pp 19. 2009. Fulltekst

Almendral-Vazquez, Ariel; Dahle, Pål; Abrahamsen, Petter; Skorstad, Arne; Georgsen, Frode. COHIBA user manual version 1.4.1. Norsk Regnesentral. NR-notat SAND/03/2009. pp 97. 2009. Fulltekst

Abrahamsen, Petter; Almendral-Vazquez, Ariel; Dahle, Pål; Skorstad, Arne; Georgsen, Frode. COHIBA — Technical Documentation. Norsk Regnesentral. NR-notat SAND/07/2009. pp 41. 2009.

Abrahamsen, Petter; Almendral-Vazquez, Ariel. Conditioning Surfaces on Hydrocarbon Contacts in COHIBA. Norsk Regnesentral. NR-notat SAND/06/09. pp 14. 2009.

2008

Kolbjørnsen, Odd; Almendral-Vazquez, Ariel. EM inversion software, USER MANUAL. Norsk Regnesentral. NR-notat SAND/11/08. pp 34. 2008.

Abrahamsen, Petter; Almendral-Vazquez, Ariel; Dahle, Pål; Skorstad, Arne. COHIBA - Technical Documentation. Norsk Regnesentral. NR-notat SAND/03/2008. 2008.

Kolbjørnsen, Odd; Almendral-Vazquez, Ariel; Buland, Arild. Bayesian common midpoint inversion for controlled source electromagnetics. Norsk Regnesentral. NR-notat SAND/12/08. pp 25. 2008.

Dahle, Pål; Almendral-Vazquez, Ariel. Surface modelling of the Troll field using COHIBA. Norsk Regnesentral. NR-notat SAND/06/08. pp 63. 2008.

2007

Almendral-Vazquez, Ariel; Dahle, Pål; Abrahamsen, Petter; Skorstad, Arne. COHIBA user manual. Norsk Regnesentral. NR-notat SAND/05/07. 2007.

2006

Almendral-Vazquez, Ariel; Syversveen, Anne Randi. Ensemble Kalman Filter - theory and applications in oil industry. Norsk Regnesentral. NR-notat SAND/05/06. pp 23. 2006. Fulltekst

Abrahamsen, Petter; Almendral-Vazquez, Ariel; Dahle, Pål; Skorstad, Arne; Soleng, Harald Heimtun. Cohiba 0.2 Specification and design document. Norsk Regnesentral. NR-notat SAND/11/06. pp 35. 2006.

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