Petter Abrahamsen

GIG annual meeting 2025 - Summary of 2024 and planned work for 2025 2025. Rapport

GIG annual meeting 2024 - summary of 2023 and planned work for 2024 2024. Rapport

Norwegian Computing Center, Joining Forces: Solving the energy challenges together 2024. Faglig foredrag

Using Pattern Counts to Quantify the Difference Between a Pair of Three-Dimensional Realizations Mathematical Geosciences, vol. 56, pp. 1629 1639 , (ISSN 1874-8961 1874-8953 ), doi: https://doi.org/10.1007/s11004-024-10145-6 , 2024. Vitenskapelig artikkel

Consistent prediction of well paths and geological surfaces Computational Geosciences, vol. 28, pp. 1099 1113 , (ISSN 1420-0597 1573-1499 ), doi: https://doi.org/10.1007/s10596-024-10310-0 , 2024. Vitenskapelig artikkel

PCube User Manual Version 10.5 2024. Rapport

PCube User Manual version 10.0 2023. Rapport

PCube reference manual 2023. Rapport

Uncertainty, probability and bad luck 2023. Faglig foredrag

Conditioning geological surfaces to horizontal wells Computational Geosciences, (ISSN 1420-0597 1573-1499 ), doi: https://doi.org/10.1007/s10596-022-10154-6 , 2022. Vitenskapelig artikkel

GIG annual meeting 2022 - Summary of 2021 and planned work for 2022 2022. Rapport

GIG annual meeting 2021 - Summary of 2020 and planned work for 2021 2021. Rapport

Fra verdifulle oljefelt til farlige løsmasser med COHIBA , 2021. Programdeltagelse

Geostatistisk kartlegging av løsmasser 2021. Rapport

Assessing Multiple-Point Statistics by use of pattern counts to compare images 2021. Rapport

GIG annual meeting 2020 Summary of 2019 and planned work for 2020 2020. Rapport

Decision Nodes - Uncertainty propagation in decision trees 2020. Rapport

Dip point coordinates in COHIBA 2020. Rapport

COHIBA User Manual Version 6.1 2020. Rapport

Compendium of Linvel formulas used in Cohiba 2020. Rapport

Handling true vertical depth (TVD) uncertainty in wells 2019. Faglig foredrag

A historic perspective on Bayesian surface modelling 2019. Faglig foredrag

Getting the zonation right. A synthetic real-time case study 2019. Faglig foredrag

A novel implementation of the LinVel model 2019. Faglig foredrag

Getting the most out of your deep directional resistivity data 2019. Faglig foredrag

Compaction and Subsidence 2019. Faglig foredrag

COHIBA - Consistent, robust, and accurate prediction of surfaces 2019. Faglig foredrag

Volume estimation, simulation and rejection sampling - Some rarely used COHIBA features 2019. Faglig foredrag

Applied Geostatistics and Geomodelling 2019 2019. Faglig foredrag

PCube+ principles 2019. Faglig foredrag

PCube+ principles 2019. Faglig foredrag

Machine learning - Finding Cut Rocks and Cute Animals 2019. Faglig foredrag

Modelling Techniques 2019. Faglig foredrag

GIG annual meeting 2019 - Summary of 2018 and planned work for 2019 2019. Rapport

Kriging Derivatives , 2019. Rapport

Application of NR’s Solutions to Geothermal Reservoir Characterization 2019. Rapport

COHIBA User Manual Version 6.0 2019. Rapport

Increasing subsurface accuracy with COHIBA by taking advantage of resistivity contrasts 2019. Rapport

Simulation of Gaussian Random Fields Using the Fast Fourier Transform (FFT) doi: https://doi.org/10.3997/2214-4609.201802134 , 2018. Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

COHIBA and velocity models linear in depth 2018. Rapport

Cohiba User Manual Version 5.6 , 2018. Rapport

Simulation of Gaussian Random Fields Using the Fast Fourier Transform 2018. Rapport

Fast and Accurate Approximation to Kriging Using Common Data Neighborhoods Mathematical Geosciences, vol. 49, pp. 619 634 , (ISSN 1874-8961 1874-8953 ), doi: https://doi.org/10.1007/s11004-016-9665-7 , 2017. Vitenskapelig artikkel

GIG annual meeting 2018 Summary of 2017 planned work for 2018 2017. Rapport

Cohiba User Manual Version 5.5 , 2017. Rapport

Norsk Regnesentral, Joining Forces 2016 2016. Faglig foredrag

Geostatistics course 2016. Faglig foredrag

Cohiba User Manual Version 5.4 2016. Rapport

Simultaneous prediction of geological surfaces and well paths 2015. Faglig foredrag

Four days course in Geostatistics and Advanced Geomodelling 2015. Faglig foredrag

Geostatistics course 2015. Faglig foredrag

Surface prediction using rejection sampling to handle non-linear constraints Bulletin of Canadian petroleum geology, vol. 63, pp. 304 317 , (ISSN 0007-4802 ), doi: https://doi.org/10.2113/gscpgbull.63.4.304 , 2015. Vitenskapelig artikkel

Efficient Neighborhoods for Kriging with Numerous Data , 2015. Vitenskapelig foredrag

Simultaneous prediction of geological surfaces and well paths , 2015. Vitenskapelig foredrag

A continuous model for well depths: theory and application to well repositioning 2015. Vitenskapelig foredrag

Geologisk modellering på Norsk Regnesentral 2015. Faglig foredrag

Detailed analyses for Cohiba depth conversion on the Johan Sverdrup Oil Field 2015. Rapport

Depth conversion on the Johan Sverdrup Oil field - using Cohiba 2015. Rapport

Surface modelling in fault blocks using COHIBA: A feasibility study 2015. Rapport

Cohiba User Manual, Version 5.1 , 2015. Rapport

Cohiba User Manual Version 5.3 , 2015. Rapport

Cohiba User Manual Version 5.2 , 2015. Rapport

An Uncertainty Model for Fault Shape and Location Mathematical Geosciences, vol. 46, pp. 957 969 , (ISSN 1874-8961 1874-8953 ), doi: https://doi.org/10.1007/s11004-014-9536-z , 2014. Vitenskapelig artikkel

Surface prediction using rejection sampling to handle non-linear relationships 2014. Vitenskapelig foredrag

Impact on Gross-Rock Volume Distributions from Uncertainties in Surfaces and Hydrocarbon Contacts 2014. Vitenskapelig foredrag

Detailed analysis for Cohiba depth conversion on the Johan Sverdrup Field Rev. 2 2014. Rapport

Using Multiple Grids in Markov Mesh Facies Modeling Mathematical Geosciences, vol. 46, pp. 205 225 , (ISSN 1874-8961 1874-8953 ), doi: https://doi.org/10.1007/s11004-013-9499-5 , 2013. Vitenskapelig artikkel

Norsk Regnesentral(NR)/Norwegian Computing Center 2013. Faglig foredrag

COHIBA user manual version 4.2 (SAND/10/13) 2013. Rapport

COHIBA technical manual (SAND/12/13) 2013. Rapport

SAND 2013 - Kiel 2013. Rapport

Cohiba User Manual Version 4.1 , 2013. Rapport

A Study on How Cap Rock Geometry Influences the CO2 Storage Capacity 2012. Poster

Geostatistics Oslo 2012 (ISSN 9789400741522 ), , 2012. Vitenskapelig antologi/Konferanseserie

Added Value by Fast and Robust Conditioning of Structural Surfaces to Horizontal Wells for Real-World Reservoir Models doi: https://doi.org/10.2118/159746-ms , 2012. Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

A Study on How Top-Surface Morphology Influences the Storage Capacity of CO2 in Saline Aquifers pp. 481 492 , doi: https://doi.org/10.1007/978-94-007-4153-9_39 , 2012. Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

A Fast and Consistent Geostatistical Approach for Constraining 3D Structural Models to Horizontal Wells , 2012. Vitenskapelig foredrag

A Study of How Top-Surface Morphology Influences the Storage Capacity of CO2 in Saline Aquifers 2012. Vitenskapelig foredrag

Cohiba User Manual Version 4.0 2012. Rapport

Cohiba User Manual Version 3.1.1 , 2012. Rapport

Grenseløst - matematikk 2011. Programdeltagelse

A study on how top surface morphology influences the CO2 storage capacity 2011. Vitenskapelig foredrag

Terningkast i oljebransjen 2011. Faglig foredrag

Geostatistics course 2011. Faglig foredrag

Methods of the Markov Mesh Multi-Grid Module in RMS 2011. Rapport

Cohiba user manual Version 2.5 2011. Rapport

COHIBA user manual - Version 2.3 2011. Rapport

Cohiba user manual version 3.0 2011. Rapport

Parallelization of Petrosim 2011. Rapport

COHIBA user manual - Version 2.4 2011. Rapport

A Consistent Geostatistical Approach for Constraining Multiple Surfaces to Horizontal Wells , 2010. Poster

Flexible Simulation of Faults , 2010. Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

Statistics in the petroleum industry 2010. Vitenskapelig foredrag

SPE 134912 - Flexible Simulation of Faults 2010. Vitenskapelig foredrag

COHIBA user manual - Version 2.0 , 2010. Rapport

COHIBA user manual — Version 2.1 , 2010. Rapport

COHIBA user manual — Version 2.2 , 2010. Rapport

STK 4050 Stochastic Simulation – Some Practical Applications and Problems , 2009. Vitenskapelig foredrag

Geostatistics course 2009. Faglig foredrag

Methods of the Multipoint Module in RMS 2009. Rapport

COHIBA — Technical Documentation 2009. Rapport

Conditioning Surfaces on Hydrocarbon Contacts in COHIBA 2009. Rapport

Surface based fault format in Havana , 2009. Rapport

SAND 2009 2009. Rapport

COHIBA user manual version 1.4.1 , 2009. Rapport

Multidimensional Scaling and Anisotropic Covariance Functions pp. 187 196 , 2008. Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

Reservoir Characterization Improvement by Accounting for Well Test Extracted Effective Permeabilities 2008. Vitenskapelig foredrag

TuMod – Process Based Stochastic Modelling of Deep Marine Deposits 2008. Vitenskapelig foredrag

Stochastic modelling of deep marine deposits by mimicking sedimentary processes 2008. Vitenskapelig foredrag

COHIBA course 2008. Faglig foredrag

COHIBA - Technical Documentation 2008. Rapport

Main Results of the Multipoint Project , 2008. Rapport

Modification of the Snesim Algorithm 2008. Rapport

An implementation of conditional Markov mesh simulation with parameter estimation , 2008. Rapport

Process based modelling of deep marine reservoir systems 2007. Vitenskapelig foredrag

TuMod – Stochastic Modeling of Turbidite Sedimentation , 2007. Vitenskapelig foredrag

Process Based Stochastic Modeling of Deep Marine Reservoirs , 2007. Vitenskapelig foredrag

Stochastic Modeling of Turbidite Sedimentation 2007. Vitenskapelig foredrag

Modification of the SNESIM algorithm , 2007. Vitenskapelig foredrag

Combining Well Logs and Well Test Data in Permeability Modelling Using Fast Fourier Transform , 2007. Vitenskapelig foredrag

Stochastic modelling of deep - marine deposits , 2007. Vitenskapelig foredrag

A process based attempt to re-create the Peïra Cava sub-basin, SE France , 2007. Vitenskapelig foredrag

Geostatistics course 2007. Faglig foredrag

STK 4050 Stochastic Simulation – Some Practical Applications and Problems , 2007. Faglig foredrag

COHIBA user manual 2007. Rapport

Combining Well Logs and Well Test Data in Permeability Modelling 2007. Rapport

Cohiba 0.2 Specification and design document 2006. Rapport

SAND 2005 , 2006. Rapport

When can shape and scale parameters of a 3D variogram be estimated? pp. 949 958 , , 2005. Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

Theory and application of the cloud transform pp. 45 54 , , 2005. Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

Combining Methods for Subsurface Prediction pp. 601 610 , , 2005. Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

Stochastic models linking physics, interpretations, and ambiguities 2005. Vitenskapelig foredrag

The Cloud Transform 2004. Vitenskapelig foredrag

Stochastic modelling linking physics, interpretations, and ambiguities 2004. Vitenskapelig foredrag

Correlation Study for inverted seismic on Oseberg Øst 2004. Rapport

Application of multiple point statistics to the Oseberg Øst field 2003. Rapport

Kriging with inequality constraints Mathematical Geology, vol. 33, pp. 719 744 , (ISSN 0882-8121 1573-8868 ), doi: https://doi.org/10.1023/1011078716252 , 2001. Vitenskapelig artikkel

Recent development in conditioning reservoir models using geostatistics 2001. Vitenskapelig foredrag

Estimation of gross rock volume of filled geological structures with uncertainty measures SPE Reservoir Evaluation and Engineering, vol. 3, pp. 304 309 , (ISSN 1094-6470 1930-0212 ), doi: https://doi.org/10.2118/65419-PA , 2000. Vitenskapelig artikkel

Modelling spatial and temporal dependencies between earthquakes 2000. Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

Efficient numerical algorithms for large cokriging systems 2000. Rapport

Kriging with inequality constraints 2000. Rapport

Make decisions using stochastic models Springer Verlag, Springer -Lehrbuch, , 1999. Vitenskapelig artikkel

Faults and horizon modelling 1999. Vitenskapelig foredrag

Why use stochastic models with time consuming simulation algorithms 1999. Vitenskapelig foredrag

FFT algorithm for simulating Gaussian random fields 1999. Rapport

Specification of new petrophysical modelling tool 1999. Rapport

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. Vitenskapelig artikkel

Uncertain Cap Rock Geometry, Spill Point, and Gross Rock Volume, SPE 49286 1998. Vitenskapelig foredrag

Statistical analysis of seismic time data from the Troll field 1998. Rapport

Prediction of geological subsurfaces based on Gaussian random field models 1997. Doktorgradsavhandling

Seismic impedance and porosity: Support effects 1997. Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

Seismic image analysis: A pilot study for investigating the relevance of using image analysis techniques on seismic data 1997. Rapport

HCPV evaluation of Sleipner Øst and Loke 1997. Rapport

HCPV studium for PL199b 1997. Rapport

A Review of Gaussian random fields and correlation functions - Second edition (ISSN 9788253904351 ), , 1997. Rapport

Conditioning a Fluvial Model on Convolved Seismic Amplitudes 1997. Rapport

Bayesian kriging of Gaussian fields constrained by inequality data 1997. Rapport

Velocity log data in DepCon 1997. Rapport

Moments of the maximum of two correlated normals 1997. Rapport

Stochastic reservoir characterization using AVO inversion Ukjent, 1996. Populærvitenskapelig artikkel

3D-AVO in stochastic reservoir modelling - geostatistical methods for data integration 1996. Vitenskapelig foredrag

Current and future methods for conditioning of reservoir descriptions to seismic data 1996. Vitenskapelig foredrag

Geostatistics for seismic depth conversion , 1996. Rapport

A geostatistical analysis of well data 1996. Rapport

Conditioning stochastic reservoir models on seismic amplitude traces - Stochastic inversion and simulation 1996. Rapport

Estimation of reserves with unknown spillpoint , 1996. Rapport

Geostatistics course 1995. Vitenskapelig foredrag

HCPV evaluation of Troll Olje Gas Province 1995. Rapport

Probability density functions for hydrocarbon contacts 1995. Rapport

Ambiguous models for subsurface prediction , 1995. Rapport

Random functions and geological subsurfaces Ukjent, pp. 22 22 , 1994. Vitenskapelig artikkel

Geostatistics course 1994. Vitenskapelig foredrag

Kriging derivatives 1994. Vitenskapelig foredrag

Stochastic description of geological subsurfaces 1994. Vitenskapelig foredrag

A review of Gaussian random fields and correlation functions (ISSN 9788253903736 ), 1994. Rapport

DepCon 3.0 - User guide. Adapted from on-line help system 1994. Rapport

Bayesian kriging for seismic depth conversion of a multi-layer reservoir pp. 385 398 , 1993. Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

A location dependent linear velocity model 1993. Rapport

HORIZON 4.1 - extension to 4.0 user guide and theory for horizon_dc 1993. Rapport

DepCon 2.1 - User Guide. Adapted from on-line help system 1993. Rapport

An integrated approach to prediction of hydrocarbon in place and recoverable reserve with uncertainty measures Ukjent, 1992. Vitenskapelig artikkel

HORIZON 4 - Geometrical module. User guide and theory for HORIZON_dc 1992. Rapport

DepCon: Theory and methods 1992. Rapport

DepCon. Version 2.0. User guide. Adapted from on-line help system 1992. Rapport

Stokastisk feltteori anvendt på seismisk dybdekonvertering 1991. Vitenskapelig foredrag

New estimates of HCPV with uncertainty for SMØRBUKK SOUTH 1991. Rapport

Oil in place - estimates with uncertainty for NJORD 1991. Rapport

Decisions on development and appreciation of information 1991. Rapport

Stochastic models for seismic depth conversion of geological horizons 1991. Rapport

Utvinnbar ressurs som funksjon av antall dreneringspunkter - anslag med usikkerhet 1990. Rapport

Potensiell reduksjon i usikkerheten til anslaget på hydrokarbonreserver i Gullfaks Sør. Resultater for testproduksjonsmodell. Hefte I, II og III 1990. Rapport

Programmering i FORTRAN - retningslinjer og råd for SAND 1990. Rapport

Tilstedeværende ressurs og utvinnbar ressurs i Gullfaks Sør - anslag med usikkerhet. Hefte I, II, III og IV 1990. Rapport

Prediksjon av tilstedeværende hydrokarbonvolum 1989. Vitenskapelig foredrag

Analyse av stackinghastighetsdata med hovedvekt på bestemmelse av usikkerhet - forprosjekt 1989. Rapport

Geometrical characteristics og Gyda reservoir - Preliminary report 1989. Rapport

HORIZON/STACK - brukerveiledning og teknisk dokumentasjon 1989. Rapport

Romlige usikkerheter i intervallhastigheter. Uttesting av programmet HORIZON/STACK 1989. Rapport

HORIZON 3.1 - brukerveiledning og teknisk dokumentasjon 1989. Rapport

Random walk in field theories Ukjent, 1988. Fagartikkel

Kan en computer inndele en brønn i sedimentære facies uten å anvende andre data enn logger? 1988. Rapport

Simulations of hydrocarbon pore volume for Smørbukk south 1988. Rapport

En undersøkelse av muligheten for å skille vannsoner fra oljesoner på grunnlag av loggmålinger 1988. Rapport