Publication profile

Petter Abrahamsen

Name:	Petter Abrahamsen
Title:	Forskningssjef SAND / Research Director SAND
Phone:	(+47) +47 22 85 26 40 Mob: +47 917 45 547
Email:	pab [at] nr [dot] no
Scientific areas:	Petroleum reservoir modelling, Geological faults and surfaces, Spatial statistics (Geostatistics), Stochastic modelling, Seismic depth conversion, Bayesian statistics
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Academic anthology/Conference proceedings

2012

Abrahamsen, Petter; Kolbjørnsen, Odd; Hauge, Ragnar (eds). Geostatistics Oslo 2012. Springer. (ISBN 978-94-007-4152-2). pp 573. 2012. Fulltekst

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.

2017

Vigsnes, Maria; Kolbjørnsen, Odd; Hauge, Vera Louise; Dahle, Pål; Abrahamsen, Petter. Fast and Accurate Approximation to Kriging Using Common Data Neighborhoods. Mathematical Geosciences (ISSN 1874-8961). 49(5) pp 619-634. doi: 10.1007/s11004-016-9665-7. 2017.

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.

2014

Røe, Per; Georgsen, Frode; Abrahamsen, Petter. An Uncertainty Model for Fault Shape and Location. Mathematical Geosciences (ISSN 1874-8961). 46(8) pp 957-969. doi: 10.1007/s11004-014-9536-z. 2014. Fulltekst

2013

Kolbjørnsen, Odd; Stien, Marita; Kjønsberg, Heidi; Fjellvoll, Bjørn; Abrahamsen, Petter. Using Multiple Grids in Markov Mesh Facies Modeling. Mathematical Geosciences (ISSN 1874-8961). 46(2) pp 205-225. doi: 10.1007/s11004-013-9499-5. 2013.

2001

Abrahamsen, Petter; Benth, Fred Espen. Kriging with inequality constraints. Mathematical Geology (ISSN 0882-8121). 33(6) pp 719-744. doi: 10.1023/A:1011078716252. 2001.

2000

Abrahamsen, Petter; Hauge, Ragnar; Heggland, Knut; Mostad, Petter F.. Estimation of gross rock volume of filled geological structures with uncertainty measures. SPE Reservoir Evaluation and Engineering (ISSN 1094-6470). 3(4) pp 304-309. doi: 10.2118/65419-PA. 2000.

1999

Holden, Lars; Abrahamsen, Petter; Hektoen, Anne-Lise; Soleng, Harald Heimtun; Syversveen, Anne Randi. Make decisions using stochastic models. Springer Verlag, Springer -Lehrbuch 1999. Fulltekst

1998

Abrahamsen, Petter; Benth, Fred Espen. Gaussian field with unknown trend conditioned on inequality data - Proceedings of the 4th annual conference of the International Association for Mathematical Geology. Ukjent pp 333-338. 1998. Fulltekst

1994

Abrahamsen, Petter; Omre, Henning. Random functions and geological subsurfaces. Ukjent pp 22. 1994.

1992

Abrahamsen, Petter; Egeland, Thore; Lia, Oddvar; Omre, Henning. An integrated approach to prediction of hydrocarbon in place and recoverable reserve with uncertainty measures. Ukjent 1992.

Academic chapter/article/Conference paper

2018

Abrahamsen, Petter; Kvernelv, Vegard Berg; Barker, Daniel Martin L. Simulation of Gaussian Random Fields Using the Fast Fourier Transform (FFT). In: ECMOR XVI - 16th European Conference on the Mathematics of Oil Recovery, 3–6 September 2018, Barcelona, Spain. (ISBN 978-94-6282-260-3). doi: 10.3997/2214-4609.201802134. 2018.

2012

Syversveen, Anne Randi; Nilsen, Halvor Møll; Lie, Knut-Andreas; Tveranger, Jan; Abrahamsen, Petter. A Study on How Top-Surface Morphology Influences the Storage Capacity of CO2 in Saline Aquifers. In: Geostatistics Oslo 2012. (ISBN 978-94-007-4152-2). pp 481-492. doi: 10.1007/978-94-007-4153-9_39. 2012. Fulltekst

Stenerud, Vegard Røine; Kallekleiv, Hans Ivar; Abrahamsen, Petter; Dahle, Pål; Skorstad, Arne; Viken, May Hege Aalmen. Added Value by Fast and Robust Conditioning of Structural Surfaces to Horizontal Wells for Real-World Reservoir Models. In: SPE Annual Technical Conference and Exhibition, 8-10 October 2012, San Antonio, Texas, USA. (ISBN 978-1-61399-213-5). doi: 10.2118/159746-ms. 2012. Fulltekst

2010

Røe, Per; Abrahamsen, Petter; Georgsen, Frode; Syversveen, Anne Randi; Lia, Oddvar. Flexible Simulation of Faults. In: 2010 ATCE SPE Annual Technical Conference and Exhibition. (ISBN 978-1-55563-300-4). 2010. Fulltekst

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.

2005

Dahle, Pål; Kolbjørnsen, Odd; Abrahamsen, Petter. When can shape and scale parameters of a 3D variogram be estimated? In: Geostatistics Banff 2004. (ISBN 978-1-4020-3515-9). pp 949-958. 2005. Fulltekst

Kolbjørnsen, Odd; Abrahamsen, Petter. Theory and application of the cloud transform. In: Geostatistics Banff 2004. (ISBN 978-1-4020-3515-9). pp 45-54. 2005. Fulltekst

Abrahamsen, Petter. Combining Methods for Subsurface Prediction. In: Geostatistics Banff 2004. (ISBN 978-1-4020-3515-9). pp 601-610. 2005. Fulltekst

2000

Holden, Lars; Natvig, Bent; Sannan, Sigurd; Abrahamsen, Petter; Bungum, Hilmar. Modelling spatial and temporal dependencies between earthquakes. In: GEOSTAT 2000, Proceedings of 6th International Geostatistics Congress. 2000.

1997

Abrahamsen, Petter; Hektoen, Anne-Lise; Holden, Lars; Munthe, Kristin Lucie. Seismic impedance and porosity: Support effects. In: Geostatistics Wollongong '96. (ISBN 0-7923-4494-4). 1997. Data

1993

Abrahamsen, Petter. Bayesian kriging for seismic depth conversion of a multi-layer reservoir. In: Geostatistics Tróia '92. (ISBN 978-0-7923-2157-6). pp 385-398. 1993.

Academic lecture

2015

Vigsnes, Maria; Abrahamsen, Petter; Hauge, Vera Louise; Kolbjørnsen, Odd. Efficient Neighborhoods for Kriging with Numerous Data. Petroleum Geostatistics; Biarritz, 9/7/2015 - 9/11/2015. Fulltekst

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; Vigsnes, Maria. Impact on Gross-Rock Volume Distributions from Uncertainties in Surfaces and Hydrocarbon Contacts. Second EAGE Integrated Reservoir Modelling Conference; Uncertainty Management: Are we Doing it Right?; Dubai, 11/16/2014 - 11/19/2014.

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.

2012

Syversveen, Anne Randi; Nilsen, Halvor Møll; Lie, Knut-Andreas; Tveranger, Jan; Abrahamsen, Petter. A Study of How Top-Surface Morphology Influences the Storage Capacity of CO2 in Saline Aquifers. 9th International Geostatistics Congress; Oslo, 6/11/2012 - 6/15/2012.

Abrahamsen, Petter; Dahle, Pål; Skorstad, Arne. A Fast and Consistent Geostatistical Approach for Constraining 3D Structural Models to Horizontal Wells. Integrated Reservoir Modelling; Dubai, 11/25/2012 - 11/28/2012. Fulltekst

2011

Syversveen, Anne Randi; Nilsen, Halvor Møll; Lie, Knut-Andreas; Tveranger, Jan; Abrahamsen, Petter. A study on how top surface morphology influences the CO2 storage capacity. Impact of realistic geological models on simulation of CO2 storage; Bergen, 11/22/2011 - 11/24/2011.

2010

Røe, Per; Abrahamsen, Petter; Georgsen, Frode; Syversveen, Anne Randi; Lia, Oddvar. SPE 134912 - Flexible Simulation of Faults. SPE ATCE 2010, Florence, Italy, 9/21/2010.

Abrahamsen, Petter. Statistics in the petroleum industry. 23rd Nordic Conference on Mathematical Statistics (NORDSTAT), 6/15/2010.

2009

Abrahamsen, Petter. STK 4050 Stochastic Simulation – Some Practical Applications and Problems. , . Fulltekst

2008

Skorstad, Arne; Georgsen, Frode; Abrahamsen, Petter; Smørgrav, Eivind. Reservoir Characterization Improvement by Accounting for Well Test Extracted Effective Permeabilities. 11th European Conference on the Mathematics of Oil Recovery; Bergen, 9/8/2008 - 9/11/2008.

Abrahamsen, Petter; Fjellvoll, Bjørn; Hauge, Ragnar; Howell, John; Aas, Tor Even. TuMod – Process Based Stochastic Modelling of Deep Marine Deposits. MassFlow-3D Seminar/Workshop 2008; Stavanger, 1/23/2008.

Fjellvoll, Bjørn; Abrahamsen, Petter; Hauge, Ragnar; Howell, John; Aas, Tor Even. Stochastic modelling of deep marine deposits by mimicking sedimentary processes. 33rd International Geological Congress, 8/8/2008.

2007

Abrahamsen, Petter; Fjellvoll, Bjørn; Hauge, Ragnar; Howell, John Anthony; Aas, Tor Even. Process Based Stochastic Modeling of Deep Marine Reservoirs. Petroleum Geostatistics 2007; Cascais, 9/10/2007. Fulltekst

Aas, Tor Even; Hauge, Ragnar; Fjellvoll, Bjørn; Abrahamsen, Petter; Howell, John Anthony; Tucker, Steven. Process based modelling of deep marine reservoir systems. AAPG (Am. Assoc. Petrol. Geol.) Annual Convention; Long Beach California, 4/1/2007 - 4/4/2007.

Aas, Tor Even; Howell, John; Fjellvoll, Bjørn; Abrahamsen, Petter; Hauge, Ragnar. A process based attempt to re-create the Peïra Cava sub-basin, SE France. British Sedimentological Research Group Conference and Annual General Meeting 2007, Univ. Birmingham, 12/17/2007. Fulltekst

Stien, Marita; Kolbjørnsen, Odd; Hauge, Ragnar; Abrahamsen, Petter. Modification of the SNESIM algorithm. EAGE Petroleum Geostatistics, Cascais, Portugal, 9/10/2007. Fulltekst

Abrahamsen, Petter. Stochastic Modeling of Turbidite Sedimentation. IMA Conf. on Modelling Permeable Rocks, 26 – 29 March, 2007 Univ. of Edinburgh, 3/26/2007.

Abrahamsen, Petter; Fjellvoll, Bjørn; Hauge, Ragnar; Howell, John; Aas, Tor Even. Stochastic modelling of deep - marine deposits. NGF, Production Geoscience 2007, Stavanger, 5-6 November 2007, 11/5/2007. Fulltekst

Georgsen, Frode; Abrahamsen, Petter; Skorstad, Arne. Combining Well Logs and Well Test Data in Permeability Modelling Using Fast Fourier Transform. EAGE Petroleum Geostatistics 2007, 9/11/2007. Fulltekst

Abrahamsen, Petter. TuMod – Stochastic Modeling of Turbidite Sedimentation. Statoil nettverksmøte for geologi og geomodellering, strukturgeologi og sedimentologi; Bergen, 5/30/2007. Fulltekst

2005

Abrahamsen, Petter. Stochastic models linking physics, interpretations, and ambiguities. SPE ATW, Integrating Geosciences and Engineering for Reservoir Characterization Models, 6/6/2005.

2004

Kolbjørnsen, Odd; Abrahamsen, Petter. The Cloud Transform. 4th IMA Conference on Modelling Permeable Rocks, 3/1/2004.

Abrahamsen, Petter. Stochastic modelling linking physics, interpretations, and ambiguities. SPE ATW, Cost-effective Field Development: From Geological Modeling to Flow Simulation, Dubai 12-15, 12/12/2004.

2001

Holden, Lars; Abrahamsen, Petter. Recent development in conditioning reservoir models using geostatistics. Key Uncertainties from Seismic to Geomodelling, Force seminar, 6/5/2001.

1999

Abrahamsen, Petter. Faults and horizon modelling. EAGE/SPE international symposium on petroleum geostatistics; Toulose, 4/20/1999 - 4/23/1999.

Abrahamsen, Petter. Why use stochastic models with time consuming simulation algorithms. Roxar user conference. Houston TX, 10/1/1999.

1998

Abrahamsen, Petter; Hauge, Ragnar; Heggland, Knut; Mostad, Petter F.. Uncertain Cap Rock Geometry, Spill Point, and Gross Rock Volume, SPE 49286. SPE Annual Tecnical Conference and Exhibition. Proceedings; New Orleans, Louisiana, USA, 9/27/1998.

1996

Abrahamsen, Petter. Current and future methods for conditioning of reservoir descriptions to seismic data. The Sixth Geomatic User Conference, Oslo, 5/7/1996.

Abrahamsen, Petter. 3D-AVO in stochastic reservoir modelling - geostatistical methods for data integration. IKU seminar, 5/8/1996.

1995

Abrahamsen, Petter. Geostatistics course. Odin Reservoir Software & Services AS, London, 2/28/1995.

1994

Abrahamsen, Petter. Stochastic description of geological subsurfaces. PROPETRO-seminar, The Resourch Council of Norway. Soria Moria, Oslo, 9/22/1994.

Abrahamsen, Petter. Geostatistics course. Norwegian Computing Center, Oslo, 3/19/1994.

Abrahamsen, Petter. Kriging derivatives. University of Oslo, 5/1/1994.

1991

Abrahamsen, Petter. Stokastisk feltteori anvendt på seismisk dybdekonvertering. Geomøte -91, Oljedirektoratet. Stavanger, 2/14/1991.

1989

Abrahamsen, Petter; Halvorsen, Kjetil B.. Prediksjon av tilstedeværende hydrokarbonvolum. 5. norske statistikermøte, Inderøy, 7/14/1989.

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.

Abrahamsen, Petter. Modelling Techniques. NPF 2019 Biennial Reservoir Characterization Conference; Sola, 12/3/2019 - 12/4/2019.

Aker, Eyvind; Røe, Per; Hauge, Ragnar; Abrahamsen, Petter. PCube+ principles. Workshop; Oslo, 1/23/2019 - 1/24/2019.

Aker, Eyvind; Røe, Per; Hauge, Ragnar; Abrahamsen, Petter. PCube+ principles. Workshop; Stavanger, 3/4/2019.

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.

Abrahamsen, Petter. Compaction and Subsidence. COHIBA workshop 2019; Oslo, 11/5/2019 - 11/6/2019.

Abrahamsen, Petter. Volume estimation, simulation and rejection sampling - Some rarely used COHIBA features. COHIBA workshop 2019; Oslo, 11/5/2019 - 11/6/2019.

Abrahamsen, Petter. COHIBA - Consistent, robust, and accurate prediction of surfaces. COHIBA workshop 2019; Oslo, 11/5/2019 - 11/6/2019.

Abrahamsen, Petter. A historic perspective on Bayesian surface modelling. COHIBA workshop 2019; Oslo, 11/5/2019 - 11/6/2019.

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.

Abrahamsen, Petter. Machine learning - Finding Cut Rocks and Cute Animals. SINTEF Petroleum Conference 2019; Trondheim, 3/19/2019 - 3/20/2019.

2016

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

Abrahamsen, Petter. Norsk Regnesentral, Joining Forces 2016. Joining Forces 2016; NPD, Stavanger, 2/2/2016 - 2/3/2016.

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.

Abrahamsen, Petter. Geostatistics course. Kurs for Det norske oljeselskap; Oslo, 8/26/2015 - 8/27/2015.

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

Poster

2012

Syversveen, Anne Randi; Abrahamsen, Petter; Tveranger, Jan; Nilsen, Halvor Møll; Lie, Knut-Andreas. A Study on How Cap Rock Geometry Influences the CO2 Storage Capacity. Industrial Structural Geology; Burlington House, Picadilly, London, 11/28/2012 - 11/30/2012.

2010

Abrahamsen, Petter; Dahle, Pål; Georgsen, Frode; Skorstad, Arne. A Consistent Geostatistical Approach for Constraining Multiple Surfaces to Horizontal Wells. GEO 2010 - 9th Middle East Geoscience Conference and Exhibition, 7 - 10 March 2010, Manama, Bahrain, 3/8/2010. Fulltekst

Doctoral dissertation

1997

Abrahamsen, Petter. Prediction of geological subsurfaces based on Gaussian random field models. University of Oslo. 1997.

Report

2021

Lilleborge, Marie; Fjellvoll, Bjørn; Hauge, Ragnar; Abrahamsen, Petter. Assessing Multiple-Point Statistics by use of pattern counts to compare images. Norsk Regnesentral. NR-notat SAND/15/21. pp 29. 2021.

Kvernelv, Vegard Berg; Aarnes, Ingrid; Abrahamsen, Petter. Geostatistisk kartlegging av løsmasser. Norsk Regnesentral. NR-notat SAND/08/21. pp 19. 2021.

Røe, Per; Aker, Eyvind; Barker, Daniel Martin L; Fjeldstad, Torstein Mæland; Hauge, Ragnar; Kjønsberg, Heidi; Nilsen, Carl-Inge Colombo; Sanchis, Charlotte Juliette; Abrahamsen, Petter. GIG annual meeting 2021 - Summary of 2020 and planned work for 2021. Norsk Regnesentral. NR-notat SAND/01/21. pp 35. 2021.

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.

Sektnan, Audun; Abrahamsen, Petter; Dahle, Pål. Dip point coordinates in COHIBA. Norsk Regnesentral. NR-notat SAND/15/20. pp 12. 2020.

Goodwin, Håvard; Lilleborge, Marie; Abrahamsen, Petter. Decision Nodes - Uncertainty propagation in decision trees. Norsk Regnesentral. NR-notat SAND/06/20. pp 50. 2020.

Røe, Per; Hauge, Ragnar; Aker, Eyvind; Barker, Daniel Martin L; Nilsen, Carl-Inge Colombo; Sanchis, Charlotte Juliette; Kjønsberg, Heidi; Abrahamsen, Petter; Nesvold, Erik. GIG annual meeting 2020 Summary of 2019 and planned work for 2020. Norsk Regnesentral. NR-notat SAND/01/2020. pp 31. 2020.

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.

Abrahamsen, Petter. Kriging Derivatives. Norsk Regnesentral. NR-notat SAND/11/2019. pp 30. 2019. Fulltekst

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.

Røe, Per; Hauge, Ragnar; Aker, Eyvind; Barker, Daniel Martin L; Nilsen, Carl-Inge Colombo; Sanchis, Charlotte Juliette; Kjønsberg, Heidi; Abrahamsen, Petter. GIG annual meeting 2019 - Summary of 2018 and planned work for 2019. Norsk Regnesentral. NR-notat SAND/01/19. pp 27. 2019.

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

Kvernelv, Vegard Berg; Barker, Daniel Martin L; Abrahamsen, Petter. Simulation of Gaussian Random Fields Using the Fast Fourier Transform. Norsk Regnesentral. NR-notat SAND/04/18. pp 33. 2018.

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

Røe, Per; Hauge, Ragnar; Aker, Eyvind; Abrahamsen, Petter; Hauge, Vera Louise; Sanchis, Charlotte Juliette. GIG annual meeting 2018 Summary of 2017 planned work for 2018. Norsk Regnesentral. NR-notat SAND/02/2017. pp 20. 2017.

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

Vigsnes, Maria; Abrahamsen, Petter. Depth conversion on the Johan Sverdrup Oil field - using Cohiba. Norsk Regnesentral. NR-notat SAND/03/15. pp 38. 2015.

Vigsnes, Maria; Abrahamsen, Petter. Detailed analyses for Cohiba depth conversion on the Johan Sverdrup Oil Field. Norsk Regnesentral. NR-notat SAND/02/15. pp 42. 2015.

2014

Vigsnes, Maria; Abrahamsen, Petter. Detailed analysis for Cohiba depth conversion on the Johan Sverdrup Field Rev. 2. Norsk Regnesentral. NR-notat SAND/06/14. pp 31. 2014.

2013

Abrahamsen, Petter; Dahle, Pål; Hauge, Vera Louise; Hermansen, Gudmund Horn; Vigsnes, Maria. COHIBA technical manual (SAND/12/13). Norsk Regnesentral. pp 61. 2013.

Abrahamsen, Petter; Dahle, Pål; Hermansen, Gudmund Horn; Hauge, Vera Louise; Vigsnes, Maria. COHIBA user manual version 4.2 (SAND/10/13). Norsk Regnesentral. pp 155. 2013.

Abrahamsen, Petter; Dahle, Pål; Georgsen, Frode; Hermansen, Gudmund Horn; Myrseth, Inge. Cohiba User Manual Version 4.1. Norsk Regnesentral. NR-notat SAND/02/2013. pp 159. 2013. Omtale

Abrahamsen, Petter. SAND 2013 - Kiel. Norsk Regnesentral. NR-notat SAND/03/2013. pp 23. 2013.

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

Abrahamsen, Petter; Dahle, Pål; Georgsen, Frode; Myrseth, Inge. Cohiba User Manual Version 4.0. Norsk Regnesentral. NR-notat SAND/10/2012. 2012.

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.

Kjønsberg, Heidi; Stien, Marita; Fjellvoll, Bjørn; Kolbjørnsen, Odd; Abrahamsen, Petter. Methods of the Markov Mesh Multi-Grid Module in RMS. Norsk Regnesentral. NR-notat SAND/21/2010. pp 44. 2011.

Fjellvoll, Bjørn; Abrahamsen, Petter. Parallelization of Petrosim. Norsk Regnesentral. NR-notat SAND/15/2011. pp 11. 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

Kjønsberg, Heidi; Fjellvoll, Bjørn; Abrahamsen, Petter; Kolbjørnsen, Odd; Stien, Marita. Methods of the Multipoint Module in RMS. Norsk Regnesentral. NR-notat SAND/09/09. pp 35. 2009.

Abrahamsen, Petter. SAND 2009. Norsk Regnesentral. NR-notat SAND/08/2009. pp 21. 2009.

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

Kjønsberg, Heidi; Kolbjørnsen, Odd; Stien, Marita; Abrahamsen, Petter. Main Results of the Multipoint Project. Norsk Regnesentral. NR-notat NR/SAND/13/2008. pp 15. 2008. Fulltekst

Stien, Marita; Kjønsberg, Heidi; Kolbjørnsen, Odd; Abrahamsen, Petter. An implementation of conditional Markov mesh simulation with parameter estimation. Norsk Regnesentral. NR-notat SAND/04/2008. pp 36. 2008. Fulltekst

Stien, Marita; Hauge, Ragnar; Kolbjørnsen, Odd; Abrahamsen, Petter. Modification of the Snesim Algorithm. Norsk Regnesentral. NR-notat SAND/09/08. pp 40. 2008.

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

2007

Georgsen, Frode; Abrahamsen, Petter; Skorstad, Arne. Combining Well Logs and Well Test Data in Permeability Modelling. Norsk Regnesentral. NR-notat SAND/08/07. pp 18. 2007.

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

2006

Abrahamsen, Petter. SAND 2005. Norsk Regnesentral. NR-notat SAND/01/06. pp 42. 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.

2004

Kolbjørnsen, Odd; Hauge, Ragnar; Abrahamsen, Petter. Correlation Study for inverted seismic on Oseberg Øst. Norsk Regnesentral. NR-notat SAND/04/04. pp 23. 2004.

2003

Syversveen, Anne Randi; Kolbjørnsen, Odd; Abrahamsen, Petter. Application of multiple point statistics to the Oseberg Øst field. Norsk Regnesentral. NR-notat SAND/06/03. pp 24. 2003.

2000

Abrahamsen, Petter; Holden, Lars. Efficient numerical algorithms for large cokriging systems. Norsk Regnesentral. NR-notat SAND/03/00. pp 14. 2000.

Abrahamsen, Petter; Benth, Fred Espen. Kriging with inequality constraints. Norsk Regnesentral. NR-notat SAND/05/00. pp 21. 2000.

1999

Abrahamsen, Petter; Hektoen, Anne-Lise. Specification of new petrophysical modelling tool. Norsk Regnesentral. NR-notat SAND/03/99. pp 45. 1999.

Abrahamsen, Petter. FFT algorithm for simulating Gaussian random fields. Norsk Regnesentral. NR-notat SAND/10/99. pp 28. 1999.

1998

Huseby, Ragnar Bang; Abrahamsen, Petter. Statistical analysis of seismic time data from the Troll field. Norsk Regnesentral. NR-notat SAND/05/98. pp 63. 1998.

1997

Hjort, Nils Lid; Abrahamsen, Petter. Moments of the maximum of two correlated normals. Norsk Regnesentral. NR-notat SAND/18/97. pp 9. 1997.

Hauge, Ragnar; Skorstad, Arne; Holden, Lars; Abrahamsen, Petter. Conditioning a Fluvial Model on Convolved Seismic Amplitudes. Norsk Regnesentral. NR-notat SAND/10/97. 1997.

Gjerde, Jon; Abrahamsen, Petter. HCPV evaluation of Sleipner Øst and Loke. Norsk Regnesentral. NR-notat SAND/11/97. pp 31. 1997.

Benth, Fred Espen; Abrahamsen, Petter; Hauge, Ragnar. HCPV studium for PL199b. Norsk Regnesentral. NR-notat SAND/02/97. pp 64. 1997.

Benth, Fred Espen; Abrahamsen, Petter. Bayesian kriging of Gaussian fields constrained by inequality data. Norsk Regnesentral. NR-notat SAND/07/97. 1997.

Abrahamsen, Petter. Velocity log data in DepCon. Norsk Regnesentral. NR-notat SAND/21/97. pp 10. 1997.

Solberg, Anne H S; Storvik, Geir Olve; Teigland, André; Møller-Holst, Johan; Berge, Anker M.; Abrahamsen, Petter. Seismic image analysis: A pilot study for investigating the relevance of using image analysis techniques on seismic data. Norsk Regnesentral. NR-notat BILD/06/97. 1997.

Abrahamsen, Petter. A Review of Gaussian random fields and correlation functions - Second edition. 917. (ISBN 82-539-0435-5) pp 64. 1997. Fulltekst

1996

Heggland, Knut; Abrahamsen, Petter. A geostatistical analysis of well data. Norsk Regnesentral. NR-notat SAND/12/96. pp 29. 1996.

Abrahamsen, Petter; Hauge, Ragnar; Heggland, Knut. Estimation of reserves with unknown spillpoint. Norsk Regnesentral. NR-notat SAND/09/96. 1996. Fulltekst

Abrahamsen, Petter. Geostatistics for seismic depth conversion. Norsk Regnesentral. NR-notat SAND/06/96. pp 9. 1996. Fulltekst

Abrahamsen, Petter; Buland, Arild; Bølviken, Erik; Hauge, Ragnar; Hektoen, Anne-Lise; Skorstad, Arne. Conditioning stochastic reservoir models on seismic amplitude traces - Stochastic inversion and simulation. Norsk Regnesentral. NR-notat SAND/07/96. pp 45. 1996.

1995

Aas, Kjersti; Abrahamsen, Petter; Benth, Fred Espen. HCPV evaluation of Troll Olje Gas Province. Norsk Regnesentral. NR-notat SAND/13/95. 1995.

Abrahamsen, Petter. Probability density functions for hydrocarbon contacts. Norsk Regnesentral. NR-notat SAND/11/95. pp 19. 1995.

Abrahamsen, Petter. Ambiguous models for subsurface prediction. Norsk Regnesentral. NR-notat SAND/12/95. pp 30. 1995. Fulltekst

1994

Abrahamsen, Petter; Clemetsen, Rolf; Hatlebakk, Einar; Kristoffersen, Steinar. DepCon 3.0 - User guide. Adapted from on-line help system. Norsk Regnesentral. NR-notat SAND/25/94. pp 49. 1994.

Abrahamsen, Petter. A review of Gaussian random fields and correlation functions. 878. (ISBN 82-539-0373-1) pp 57. 1994.

1993

Abrahamsen, Petter; Clemetsen, Rolf; Egeland, Thore; Hatlebakk, Einar; Kluge, Anders; Larsen, Even Åby. DepCon 2.1 - User Guide. Adapted from on-line help system. Norsk Regnesentral. NR-notat SAND/05/93. pp 43. 1993.

Clemetsen, Rolf; Abrahamsen, Petter. HORIZON 4.1 - extension to 4.0 user guide and theory for horizon_dc. Norsk Regnesentral. NR-notat SAND/17/93. pp 6. 1993.

Abrahamsen, Petter; Hatlebakk, Einar; Hektoen, Anne-Lise. A location dependent linear velocity model. Norsk Regnesentral. NR-notat SAND/10/93. pp 54. 1993.

1992

Abrahamsen, Petter; Egeland, Thore; Hatlebakk, Einar. DepCon: Theory and methods. Norsk Regnesentral. NR-notat SAND/13/92. 1992.

Abrahamsen, Petter; Clemetsen, Rolf; Egeland, Thore; Hatlebakk, Einar; Kluge, Anders; Larsen, Even Åby. DepCon. Version 2.0. User guide. Adapted from on-line help system. Norsk Regnesentral. NR-notat SAND/14/92. pp 33. 1992.

Abrahamsen, Petter; Omre, Henning. HORIZON 4 - Geometrical module. User guide and theory for HORIZON_dc. Norsk Regnesentral. NR-notat SAND/01/92. pp 112. 1992.

1991

Abrahamsen, Petter; Egeland, Thore; Lia, Oddvar. Oil in place - estimates with uncertainty for NJORD. Norsk Regnesentral. NR-notat SAND/08/91. pp 136. 1991.

Abrahamsen, Petter; Omre, Henning; Lia, Oddvar. Stochastic models for seismic depth conversion of geological horizons. Norsk Regnesentral. NR-notat SAND/11/91. pp 13. 1991.

Abrahamsen, Petter; Omre, Henning. Decisions on development and appreciation of information. Norsk Regnesentral. NR-notat SAND/07/91. pp 17. 1991.

Abrahamsen, Petter; Egeland, Thore; Lia, Oddvar; Madsen, Rune Asgeir. New estimates of HCPV with uncertainty for SMØRBUKK SOUTH. Norsk Regnesentral. NR-notat SAND/17/91. pp 159. 1991.

1990

Abrahamsen, Petter; Halvorsen, Kjetil B.; Lia, Oddvar. Tilstedeværende ressurs og utvinnbar ressurs i Gullfaks Sør - anslag med usikkerhet. Hefte I, II, III og IV. Norsk Regnesentral. NR-notat SAND/20/90. 1990.

Abrahamsen, Petter; Halvorsen, Kjetil B.; Lia, Oddvar. Potensiell reduksjon i usikkerheten til anslaget på hydrokarbonreserver i Gullfaks Sør. Resultater for testproduksjonsmodell. Hefte I, II og III. Norsk Regnesentral. NR-notat SAND/13/90. 1990.

Abrahamsen, Petter. Utvinnbar ressurs som funksjon av antall dreneringspunkter - anslag med usikkerhet. Norsk Regnesentral. NR-notat SAND/17/90. pp 36. 1990.

Abrahamsen, Petter. Programmering i FORTRAN - retningslinjer og råd for SAND. Norsk Regnesentral. NR-notat SAND/02/90. pp 28. 1990.

1989

Abrahamsen, Petter; Halvorsen, Kjetil B.; Omre, Henning. Geometrical characteristics og Gyda reservoir - Preliminary report. Norsk Regnesentral. NR-notat SAND/09/89. 1989.

Abrahamsen, Petter; Halvorsen, Kjetil B.; Omre, Henning. Analyse av stackinghastighetsdata med hovedvekt på bestemmelse av usikkerhet - forprosjekt. Norsk Regnesentral. NR-notat SAND/07/89. 1989.

Abrahamsen, Petter; Halvorsen, Kjetil B.. HORIZON 3.1 - brukerveiledning og teknisk dokumentasjon. Norsk Regnesentral. NR-notat SAND/14/89. 1989.

Abrahamsen, Petter. Romlige usikkerheter i intervallhastigheter. Uttesting av programmet HORIZON/STACK. Norsk Regnesentral. NR-notat SAND/23/89. 1989.

Abrahamsen, Petter. HORIZON/STACK - brukerveiledning og teknisk dokumentasjon. Norsk Regnesentral. NR-notat SAND/22/89. 1989.

1988

Abrahamsen, Petter; Helgeland, Jon; Storvik, Geir. En undersøkelse av muligheten for å skille vannsoner fra oljesoner på grunnlag av loggmålinger. Norsk Regnesentral. NR-notat SAND/15/88. 1988.

Abrahamsen, Petter; Bølviken, Erik; Helgeland, Jon; Storvik, Geir. Kan en computer inndele en brønn i sedimentære facies uten å anvende andre data enn logger? Norsk Regnesentral. NR-notat SAND/31/88. 1988.

Abrahamsen, Petter; Berteig, Vidar; Halvorsen, Kjetil B.; Omre, Henning. Simulations of hydrocarbon pore volume for Smørbukk south. Norsk Regnesentral. NR-notat SAND/21/88. 1988.

Popular scientific lecture

2015

Abrahamsen, Petter. Geologisk modellering på Norsk Regnesentral. Lunsj og lær; NGI, Oslo, 11/6/2015.

2013

Abrahamsen, Petter. Norsk Regnesentral(NR)/Norwegian Computing Center. FORCE- Joining Forces Seminar; FORCE, Stavanger, 5/22/2013 - 5/23/2013.

2011

Abrahamsen, Petter. Terningkast i oljebransjen. IDE-Festivalen 2011, Digitalisering, Universitetet i Oslo; Universitetet i Oslo, 9/17/2011.

Abrahamsen, Petter; Fjellvoll, Bjørn; Hauge, Ragnar; Kolbjørnsen, Odd. Geostatistics course. , .

2009

Abrahamsen, Petter; Fjellvoll, Bjørn; Kolbjørnsen, Odd; Skorstad, Arne. Geostatistics course. , .

2008

Abrahamsen, Petter; Almendral Vazquez, Ariel; Dahle, Pål. COHIBA course. , .

2007

Abrahamsen, Petter. STK 4050 Stochastic Simulation – Some Practical Applications and Problems. , . Fulltekst

Abrahamsen, Petter; Fjellvoll, Bjørn; Kolbjørnsen, Odd; Skorstad, Arne; Hauge, Ragnar. Geostatistics course. , .

Article in business/trade/industry journal

1988

Abrahamsen, Petter. Random walk in field theories. Ukjent 1988.

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