2026

• Semwogerere, David; Vatn, Jørn; Colombo, D.; Sangesland, Sigbjørn; Pavlov, Alexey. (2026) Remaining Casing Life Prediction for Well Life Extension and Repurposing. SPE Journal
  Vitenskapelig artikkel

2025

• Ahmadli, Mehman; Gjersvik, Tor Berge Stray; Sangesland, Sigbjørn. (2025) Subsea Gate Valve—PDC Material and Sand Slurry Test. Materials
  Vitenskapelig artikkel
• Ahmadli, Mehman; Gjersvik, Tor Berge Stray; Sangesland, Sigbjørn. (2025) Tribological performance and simulation of subsea valves: A comparative study of materials, friction, and erosion. Norges teknisk-naturvitenskapelige universitet
  Doktoravhandling
• Ahmadli, Mehman; Gjersvik, Tor Berge Stray; Sangesland, Sigbjørn; Ratnayake Mudiyanselage, Chandima. (2025) Analysis of Friction and Wear Behavior of Polycrystalline Diamond Compact for Application in Subsea Valves. Journal of Offshore Mechanics and Arctic Engineering
  Vitenskapelig artikkel
• Anunciacao Jaculli, Marcelo; Hmadeh, Lewaa; Sangesland, Sigbjørn; Elahifar, Behzad. (2025) Numerical modeling validation of the sealability of bismuth alloy plugs. Petroleum Research
  Vitenskapelig artikkel
• Hassan, Ahmed Sayed Mohamed; Sangesland, Sigbjørn; Stanko, Milan. (2025) Revolutionizing CCS Wells: Economically Feasible Design Innovations. European Association of Geoscientists & Engineers (EAGE)
  Antologi

2024

• Anunciacao Jaculli, Marcelo; Hmadeh, Lewaa; Sangesland, Sigbjørn; Elahifar, Behzad. (2024) Numerical Modeling of Bismuth-Based Plugs for Well Plug and Abandonment.
  Vitenskapelig kapittel
• Manataki, Andriani; Hmadeh, Lewaa; Sørensen, Bjørn Eske; Kontis, Paraskevas; Sangesland, Sigbjørn. (2024) The effect of well temperature on the microstructure and the mechanical performance of bismuth-based plugs in well plugging and abandonment operations. Geoenergy Science and Engineering
  Vitenskapelig artikkel
• Anunciacao Jaculli, Marcelo; Viswanathan, Savin; Holden, Christian; Leira, Bernt Johan; Sangesland, Sigbjørn. (2024) Numerical Modeling of a Motion-Neutralized Floater Concept for Maritime Operations.
  Vitenskapelig kapittel
• Hmadeh, Lewaa; Feneuil, Blandine Fleur Prudence; Wiggen, Even; Skorpa, Ragnhild; Sangesland, Sigbjørn; Elahifar, Behzad; Anunciacao Jaculli, Marcelo. (2024) The Effect of Bismuth Plug Expansion on Cement Sheath Integrity. SPE Norway Subsurface Conference
  Populærvitenskapelig artikkel
• Hmadeh, Lewaa; Manataki, Andriani; Anunciacao Jaculli, Marcelo; Elahifar, Behzad; Sangesland, Sigbjørn. (2024) A Sealability Study on Bismuth-Tin Alloys for Plugging and Abandonment of Wells. SPE Journal
  Vitenskapelig artikkel
• Hmadeh, Lewaa; Anunciacao Jaculli, Marcelo; Elahifar, Behzad; Sangesland, Sigbjørn. (2024) Development of bismuth-based solutions for well plugging and abandonment: A review. Petroleum Research
  Vitenskapelig oversiktsartikkel
• Ahmadli, Mehman; Gjersvik, Tor Berge Stray; Sangesland, Sigbjørn; Reynes, Christian. (2024) Enhancing Subsea Ball Valve Performance: A Material and Design Approach.
  Vitenskapelig kapittel
• Semwogerere, David; Sangesland, Sigbjørn; Vatn, Jørn; Pavlov, Alexey; Colombo, Danilo. (2024) Well integrity and late life extension - A current industry state of practice and literature review. Geoenergy Science and Engineering
  Vitenskapelig oversiktsartikkel
• Ahmadli, Mehman; Gjersvik, Tor Berge Stray; Sangesland, Sigbjørn; Reynes, Christian. (2024) Analysis of All-Electric Subsea Gate Valve Designs and System Overview.
  Faglig kapittel
• Hmadeh, Lewaa; Manataki, Andriani; Anunciacao Jaculli, Marcelo; Elahifar, Behzad; Sangesland, Sigbjørn. (2024) Mitigating gas migration with eutectic bismuth alloy plugs. Petroleum Research
  Vitenskapelig artikkel
• Semwogerere, David; Pavlov, Alexey; Sangesland, Sigbjørn; Colombo, Danilo. (2024) Soft Sensor Fusion Model for Multi-Annuli Temperature and Pressure Monitoring in Oil and Gas Wells.
  Faglig kapittel
• Hmadeh, Lewaa; Anunciacao Jaculli, Marcelo; Vedvik, Noralf; Elahifar, Behzad; Sangesland, Sigbjørn. (2024) The effect of temperature on the sealability of bismuth–tin alloy plugs. Geoenergy Science and Engineering
  Vitenskapelig artikkel

2023

• Semwogerere, David; Pavlov, Alexey; Sangesland, Sigbjørn. (2023) Well Integrity Operations Experience Transfer Using Long Short-Term Memory (LSTM) Recurrent Neural Network.
  Vitenskapelig kapittel
• Manataki, Andriani; Kontis, Paraskevas; Sangesland, Sigbjørn. (2023) Investigation of the Microstructure of Bismuth Alloy and its Interaction With Cement and Steel Casing.
  Vitenskapelig kapittel
• Hmadeh, Lewaa; Elahifar, Behzad; Sangesland, Sigbjørn; Abrahamsen, Andreas Elmer. (2023) A Full Laboratory Study on the Physical and Mechanical Properties of a Bismuth Plug.
  Vitenskapelig kapittel
• Hmadeh, Lewaa; Elahifar, Behzad; Sangesland, Sigbjørn. (2023) The Sealing Behavior of Bismuth-Based Metal Plugs.
  Vitenskapelig kapittel
• Ahmadli, Mehman; Gjersvik, Tor Berge Stray; Sangesland, Sigbjørn. (2023) Design Assessment and Optimization of a Barrier Valve for Subsea Applications.
  Vitenskapelig kapittel

2022

• Teigland, Andreas; Sangesland, Sigbjørn. (2022) A digital approach to modeling tubular wear and its effects on well integrity. Norges teknisk-naturvitenskapelige universitet
  Doktoravhandling
• Wise, Jarrett; Karami, Hamidreza; Corina, Anisa Noor; Opedal, Nils van der Tuuk; Vrålstad, Torbjørn; Sangesland, Sigbjørn; Nygaard, Runar. (2022) Prediction of Methane Leakage Through Primary Cement Barrier in the High Island OPD, Gulf of Mexico. Journal of Natural Gas Science and Engineering
  Vitenskapelig artikkel
• Maksimov, Danil; Pavlov, Alexey; Sangesland, Sigbjørn. (2022) Real-Time Detection of Karstification Hazards While Drilling in Carbonates^†. Energies
  Vitenskapelig artikkel
• Jaculli, Marcelo A.; Leira, Bernt Johan; Sangesland, Sigbjørn; Morooka, Celso K.; Kiryu, Paulo O.. (2022) Dynamic response of a novel heave-compensated floating platform: design considerations and the effects of mooring. Ships and Offshore Structures
  Vitenskapelig artikkel
• Sevillano, Lucas Cantinelli; Sangesland, Sigbjørn; Gjersvik, Tor Berge; Faanes, Audun. (2022) A More Accurate Approach for the Design of Subsea Chemical Storage Systems Regarding Volume Requirements of Valve Leakage Tests.
  Vitenskapelig kapittel
• Sevillano, Lucas Cantinelli; Sangesland, Sigbjørn. (2022) Assessment of Power Requirements for Alternative Vertical Transportation System for Deepsea Mining.
  Vitenskapelig kapittel
• Ofei, Titus Ntow; Lund, Bjørnar; Saasen, Arild; Sangesland, Sigbjørn. (2022) The Effect of Oil-Water Ratio on Rheological Properties and Sag Stability of Oil-Based Drilling Fluids. Journal of energy resources technology
  Vitenskapelig artikkel

2021

• Teigland, Andreas; Dale, Stein Inge; Sangesland, Sigbjørn; Brechan, Bjørn Astor. (2021) A generalized empirical expression for the collapse of worn tubulars with a crescent-shaped wear groove under combined loads. Journal of Petroleum Science and Engineering
  Vitenskapelig artikkel
• Maksimov, Danil; Løken, Marius Alexander; Pavlov, Alexey; Sangesland, Sigbjørn. (2021) AUTOMATED PATTERN RECOGNITION IN REAL-TIME DRILLING DATA FOR EARLY KARST DETECTION.
  Vitenskapelig kapittel
• Godhavn, John-Morten; Olorunju, B; Gorski, Dmitri; Kvernland, Martin Krister; Sant'Ana, Mateus; Aamo, Ole Morten; Sangesland, Sigbjørn. (2021) Significant surge and swab offshore Brazil induced by rig heave during drillpipe connections. SPE Drilling & Completion
  Vitenskapelig artikkel
• Teigland, Andreas; Sangesland, Sigbjørn; Dale, Stein Inge; Brechan, Bjørn Astor. (2021) An Experimental Study of the Wear Characteristics of Tubulars Made from Corrosion-Resistant Alloys. SPE Drilling & Completion
  Vitenskapelig artikkel
• Maksimov, Danil; Pavlov, Alexey; Sangesland, Sigbjørn. (2021) Prediction and Early Detection of Karsts — An Overview of Methods and Technologies for Safer Drilling in Carbonates. Energies
  Vitenskapelig artikkel
• Gorski, Dmitri; Kvernland, Martin Krister; Hals, K; Blaaflat, M; Ladenhauf, J; Aamo, Ole Morten; Sangesland, Sigbjørn. (2021) Determination of dynamic limits for rig heave and running speed based on drilling parameters, well data and completion tool limitations – Case studies.
  Vitenskapelig kapittel
• Teigland, Andreas; Brechan, Bjørn Astor; Dale, Stein Inge; Sangesland, Sigbjørn. (2021) A Generalized Empirical Expression for Collapse of Worn Tubulars Using Stress Concentration Factors. SPE Drilling & Completion
  Vitenskapelig artikkel
• Hovda, Sigve; Sangesland, Sigbjørn. (2021) Concept for Hole Cleaning in Deviated-Well Drilling Based on Top-Side Drillstring Movements. SPE Journal
  Vitenskapelig artikkel

2020

• Gheibi, Sohrab; Agofack, Nicolaine; Sangesland, Sigbjørn. (2020) Modified discrete element method (MDEM) as a numerical tool for cement sheath integrity in wells. Journal of Petroleum Science and Engineering
  Vitenskapelig artikkel
• Brechan, Bjørn Astor; Teigland, Andreas; Dale, Stein Inge; Sangesland, Sigbjørn; Kornberg, Even. (2020) Collapse prediction of pipe subjected to combined loads. Journal of Petroleum Science and Engineering
  Vitenskapelig artikkel
• Godhavn, John-Morten; Olorunju, B; Gorski, Dmitri; Kvernland, Martin Krister; Sant'Ana, Mateus; Aamo, Ole Morten; Sangesland, Sigbjørn. (2020) Surge and swab during drill pipe connections on floaters may affect pressure windows in calm weather. Drilling Contractor
  Populærvitenskapelig artikkel
• Jafariesfad, Narjes; Geiker, Mette Rica; Sangesland, Sigbjørn; Gawel, Kamila; Torsæter, Malin. (2020) Electrokinetics Application in Concrete and Well Construction.
  Vitenskapelig kapittel
• Gheibi, Sohrab; Sangesland, Sigbjørn; Sevillano, Lucas Cantinelli; Horák, Martin. (2020) Potential Sealing Effects of Permanent Casing Deformation.
  Vitenskapelig kapittel
• Ofei, Titus Ntow; Cheng, Itung; Lund, Bjørnar; Saasen, Arild; Sangesland, Sigbjørn. (2020) On the Stability of Oil-Based Drilling Fluid: Effect of Oil-Water Ratio.
  Vitenskapelig kapittel
• Jaculli, Marcelo A; Leira, Bernt Johan; Sangesland, Sigbjørn; Morooka, Celso; Mendes, Celso K.. (2020) Dynamic Behavior of a Novel Heave-Compensated Floating Platform for Well Interventions.
  Vitenskapelig kapittel
• Ofei, Titus Ntow; Kalaga, Dinesh V.; Lund, Bjørnar; Saasen, Arild; Linga, Harald; Sangesland, Sigbjørn; Gyland, Knud Richard; Kawaji, Masahiro. (2020) Laboratory Evaluation of Static and Dynamic Sag in Oil-Based Drilling Fluids. SPE Journal
  Vitenskapelig artikkel
• Jafariesfad, Narjes; Sangesland, Sigbjørn; Gawel, Kamila; Torsæter, Malin. (2020) New Materials and Technologies for Life-Lasting Cement Sheath. A Review of Recent Advances. SPE Drilling & Completion
  Vitenskapelig oversiktsartikkel
• Brechan, Bjørn Astor; Sangesland, Sigbjørn. (2020) Framework for automated well planning and Digital Well Management. Norges teknisk-naturvitenskapelige universitet
  Doktoravhandling
• Corina, Anisa Noor; Sangesland, Sigbjørn. (2020) Cement Plug Integrity for Well Abandonment. Norges teknisk-naturvitenskapelige universitet
  Doktoravhandling
• Teigland, Andreas; Sangesland, Sigbjørn; Dale, Stein Inge. (2020) Casing Wear Simulation by Application of Real-Time Data and Predictive Modelling.
  Vitenskapelig kapittel
• Corina, Anisa Noor; Skorpa, Ragnhild; Sangesland, Sigbjørn; Vrålstad, Torbjørn. (2020) Simulation of fluid flow through real microannuli geometries. Journal of Petroleum Science and Engineering
  Vitenskapelig artikkel
• Maksimov, Danil; Pavlov, Alexey; Sangesland, Sigbjørn. (2020) Drilling in Karstified Carbonates: Early Risk Detection Technique. International Conference on Offshore Mechanics and Arctic Engineering (OMAE) [proceedings]
  Vitenskapelig artikkel
• Vavik, Dag; Sangesland, Sigbjørn. (2020) Implications of Gas Hydrates in Drilling and Completion. Norges teknisk-naturvitenskapelige universitet
  Doktoravhandling

2019

• Sevillano, Lucas Cantinelli; Morooka, Celso; Sangesland, Sigbjørn. (2019) Mitigated Riser Response During Submerged BOP Move Through Use of Drillstring Active Heave Compensation System.
  Vitenskapelig kapittel
• Corina, Anisa Noor; Opedal, Nils van der Tuuk; Vrålstad, Torbjørn; Sangesland, Sigbjørn. (2019) Cement Plug Sealing Studies of Silica Cement Systems.
  Vitenskapelig kapittel
• Corina, Anisa Noor; Opedal, Nils van der Tuuk; Vrålstad, Torbjørn; Skorpa, Ragnhild; Sangesland, Sigbjørn. (2019) The Effect of Casing Pipe Roughness on Cement Plug Integrity. SPE Drilling & Completion
  Fagartikkel
• Ofei, Titus Ntow; Lund, Bjørnar; Saasen, Arild; Sangesland, Sigbjørn; Gyland, Knud Richard; Linga, Harald. (2019) A new approach to dynamic barite sag analysis on typical Field oil-based drilling fluid.
  Vitenskapelig kapittel
• Kvernland, Martin Krister; Gorski, Dmitri; Sant'Ana, Mateus; Godhavn, John-Morten; Aamo, Ole Morten; Sangesland, Sigbjørn. (2019) Verification of downhole choke technology in a simulator using data from a North Sea well. SPE Drilling & Completion
  Vitenskapelig artikkel
• Gheibi, Sohrab; Sangesland, Sigbjørn; Vrålstad, Torbjørn. (2019) Numerical Modeling of Radial Fracturing of Cement Sheath Caused by Pressure Tests.
  Vitenskapelig kapittel

2018

• Brechan, Bjørn Astor; Dale, Stein Inge; Sangesland, Sigbjørn. (2018) Digital well planning - New cost saving well construction and Life Cycle Well Integrity Model. Proceedings - Offshore Technology Conference
  Vitenskapelig artikkel
• Sevillano, Lucas Cantinelli; Andrade, Jesus De; Sangesland, Sigbjørn. (2018) Subsea Wellhead Life-Cycle-Fatigue Analysis and the Role of Well Temperature. SPE Drilling & Completion
  Vitenskapelig artikkel
• Brechan, Bjørn Astor; Dale, Stein Inge; Sangesland, Sigbjørn. (2018) New standard for standards. Proceedings - Offshore Technology Conference
  Vitenskapelig artikkel
• Diaz Arias, Mariana JC; Stanko, Milan; Sangesland, Sigbjørn. (2018) The subsea gate box: an alternative subsea field architecture. SPE Norway The First Magazine
  Populærvitenskapelig artikkel

2017

• Zhao, Dapeng; Sangesland, Sigbjørn. (2017) Analysis of Stick-Slip Effects During Oil-Well Drilling. Norges teknisk-naturvitenskapelige universitet
  Doktoravhandling
• Zhao, Dapeng; Hovda, Sigve; Sangesland, Sigbjørn. (2017) Whirl Simulation of Drill Collar and Estimation of Cumulative Fatigue Damage on Drill-Collar Connection. SPE Journal
  Vitenskapelig artikkel

2016

• Andrade, Jesus De; Sangesland, Sigbjørn; Skorpa, Ragnhild; Todorovic, Jelena; Vrålstad, Torbjørn. (2016) Experimental laboratory setup for visualization and quantification of cement-sheath integrity. SPE Drilling & Completion
  Vitenskapelig artikkel
• Andrade, Jesus De; Sangesland, Sigbjørn. (2016) Cement Sheath Failure Mechanisms: Numerical Estimates to Design for Long-Term Well Integrity. Journal of Petroleum Science and Engineering
  Vitenskapelig artikkel
• Zhao, Dapeng; Sangesland, Sigbjørn; Vedvik, Noralf. (2016) An experimental study of axial vibration assisted drilling. Journal of Natural Gas Science and Engineering
  Vitenskapelig artikkel
• Zhao, Dapeng; Hovda, Sigve; Sangesland, Sigbjørn. (2016) Abnormal down hole pressure Variation by axial stick-slip of drillstring. Journal of Petroleum Science and Engineering
  Vitenskapelig artikkel
• Moser, Tijmen Jan; Arntsen, Børge; Johansen, Ståle Emil; Raknes, Espen Birger; Sangesland, Sigbjørn. (2016) Surface seismic monitoring while drilling using diffractions - concept and field data example. SEG technical program expanded abstracts
  Vitenskapelig artikkel

2015

• de Andrade Correia, Jesus Alberto; Sangesland, Sigbjørn; Todorovic, Jelena; Vrålstad, Torbjørn. (2015) Cement Sheath Integrity During Thermal Cycling: A Novel Approach for Experimental tests of Cement Systems.
  Vitenskapelig kapittel
• Andrade, Jesus De; Sangesland, Sigbjørn. (2015) Cement Sheath Integrity During Thermal Cycling. Norges teknisk-naturvitenskapelige universitet
  Doktoravhandling

2014

• Evensen, Kristoffer; Sangesland, Sigbjørn; Johansen, Ståle Emil; Raknes, Espen Birger; Arntsen, Børge. (2014) Relief Well Drilling Using Surface Seismic While Drilling.
  Faglig kapittel
• de Andrade Correia, Jesus Alberto; Sangesland, Sigbjørn; Vrålstad, Torbjørn; Golan, Michael. (2014) Cement Sheath Integrity Implications of Scaled-Down Wellbore Casing-Cement-Formation Sections.
  Vitenskapelig kapittel

2013

• Echtermeyer, Andreas; Emdal, Arnfinn; Grønli, Morten; Hakvåg, Jan Terje; Jacobsen, Terje; Nordal, Steinar; Sangesland, Sigbjørn; Simonsen, Anne Karoline; Steen, Sverre; Sørby, Knut. (2013) Rapport fra Laboratorieutvalget 2012/2013. Fakultet for ingeniørvitenskap og teknologi. NTNU
  Forskningsrapport

2012

• Torgergsen, Hans-Emil Bensnes; Haga, Hilde Brandanger; Sangesland, Sigbjørn; Aadnøy, Bernt Sigve; Sæbø, Jan; Johnsen, Ståle; Rausand, Marvin; Lundeteigen, Mary Ann. (2012) An Introduction to Well Integrity. NTNU
  Arbeidsnotat

2011

• Handal, Arne; Sangesland, Sigbjørn. (2011) Gas Influx Handling for Dual Gradient Drilling. Norges teknisk-naturvitenskapelige universitet
  Doktoravhandling

2009

• Okstad, Eivind; Sangesland, Sigbjørn. (2009) Integrity Assessment of Well Barriers Threatened by Increasing Casing-Hanger Loads. SPE Drilling & Completion
  Vitenskapelig artikkel

2007

• Rasmussen, Olve; Sangesland, Sigbjørn. (2007) Evaluation of MPD methods for compensation of surge and swab pressures in floating drilling operations.
  Vitenskapelig kapittel

2006

• Fossli, Børre; Sangesland, Sigbjørn. (2006) Controlled mud-cap drilling for subsea applications: Well-control challenges in deep waters. SPE Drilling & Completion
  Vitenskapelig artikkel
• Fossli, Børre; Sangesland, Sigbjørn; Rasmussen, Olve; Skalle, Pål. (2006) Managed Pressure Drilling; Techniques and Options for Improving Efficiency, Operability and Well Safety in Subsea TTRD.
  Vitenskapelig kapittel

2005

• Skalle, Pål; Rasmussen, Olve; Sangesland, Sigbjørn. (2005) Potentials of and challenges for TTRD. Berg- und Hüttenmännischer Tag
  Vitenskapelig artikkel

1999

• Sangesland, Sigbjørn; Akselsen, O.M.; Herfjord, Hans J.; Ramsland, A.R.. (1999) Junction sealing technology - Phase I. NTNU, Institutt for petroleumsteknologi og anvendt geofysikk
  Forskningsrapport