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• 2021

  Emerging applications of TiO₂/SiO₂/poly(acrylamide) nanocomposites within the engineered water EOR in carbonate reservoirs

  Ali, J. A., Kolo, K., Manshad, A. K. & Stephen, K. D., 15 Jan 2021, In: Journal of Molecular Liquids. 322, 114943.

  Research output: Contribution to journal › Article › peer-review

  • oil recovery
  • carbonates
  • emerging
  • nanocomposites
  • water

• Pulse Generation and Propagation in the Numerical Solution of Low Salinity Water Flooding

  Al-Ibadi, H., Stephen, K. & Mackay, E., Mar 2021, In: Journal of Petroleum Science and Engineering. 198, 108151.

  Research output: Contribution to journal › Article › peer-review

  • water salinity
  • flooding
  • salinity
  • wettability
  • porous medium

• The impact of diagenesis precipitation on fracture permeability in naturally fractured carbonate reservoirs

  Aljuboori, F. A., Lee, J. H., Elraies, K. A. & Stephen, K. D., Mar 2021, In: Carbonates and Evaporites. 36, 1, 6.

  Research output: Contribution to journal › Article › peer-review

  • Carbonates
  • diagenesis
  • permeability
  • carbonate
  • Minerals
• 2020

  Applications of Artificial Neural Network for Seismic Facies Classification: A Case Study from the Mid-Cretaceous Reservoir in Supergiant Oil Field

  Al-Ali, A., Stephen, K. & Shams, A., 2020, SPE Europec Featured at 82nd EAGE Conference and Exhibition. Society of Petroleum Engineers, SPE-200577-MS

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • oil fields
  • Oil fields
  • oil field
  • artificial neural network
  • Cretaceous

• Applying Reservoir-Engineering Methods to Well-Placement Optimization Algorithms for Improved Performance

  Alrashdi, Z. & Stephen, K. D., 1 Oct 2020, In: SPE Journal. 25, 5, p. 2801-2821 21 p.

  Research output: Contribution to journal › Article › peer-review

  • engineering
  • method
  • development planning
  • project
  • Sampling
  1 Citation (Scopus)

• Assessment of the potential for gas production from marine methane hydrate reservoirs by numerical simulation

  Tomasini, J. & Stephen, K., 2020, SPE Latin American and Caribbean Petroleum Engineering Conference 2020. Society of Petroleum Engineers, SPE-199134-MS

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Hydrates
  • Methane
  • Gases
  • Computer simulation
  • Gas hydrates

• Effect of fracture characteristics on history matching in the Qamchuqa reservoir: a case study from Iraq

  Aljuboori, F. A., Lee, J. H., Elraies, K. A. & Stephen, K. D., Sep 2020, In: Carbonates and Evaporites. 35, 3, 87.

  Research output: Contribution to journal › Article › peer-review

  • history
  • effect
  • Recovery
  • Oils
  • Flow of fluids

• Effect of gravity drainage models on production efficiency of naturally fractured reservoirs

  Aljuboori, F. A., Lee, J. H., Elraies, K. A. & Stephen, K. D., 27 Oct 2020, Offshore Technology Conference Asia 2020. Offshore Technology Conference, OTC-30215-MS

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Drainage
  • Gravitation
  • Recovery
  • Oils
  • Mathematical models

• Heterogeneity Effects on Low Salinity Water Flooding

  Al-Ibadi, H., Stephen, K. & MacKay, E., 2020, SPE Europec Featured at 82nd EAGE Conference and Exhibition. Society of Petroleum Engineers, SPE-200547-MS

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • salinity
  • Carbonates
  • water salinity
  • Sandstone
  • Porosity
  3 Citations (Scopus)

• Lithofacies classification and distribution for heterogeneous channelized system based on neural network process: Case study from middle east carbonate reservoir

  Al-Ali, A., Stephen, K. & Shams, A., 2 Nov 2020, SPE Norway Subsurface Conference 2020. Society of Petroleum Engineers, SPE-200723-MS

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Middle East
  • carbonates
  • lithofacies
  • carbonate
  • tidal channel

• Robust optimisation of water flooding using an experimental design-based surrogate model: A case study of a Niger-Delta oil reservoir

  Ogbeiwi, P., Stephen, K. D. & Arinkoola, A. O., Dec 2020, In: Journal of Petroleum Science and Engineering. 195, 107824.

  Research output: Contribution to journal › Article › peer-review

  • experimental design
  • Design of experiments
  • flooding
  • Oils
  • oil

• Semi-Analytical Solution of Chemical Flooding in Heterogeneous Non-Communicating Layers with a Focus on Low Salinity Water Flooding

  Al-Ibadi, H., Stephen, K. D. & Mackay, E. J., Oct 2020, In: Transport in Porous Media. 135, 1, p. 101-135 35 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Water
  • Solute transport
  • Surface active agents
  • Surface-Active Agents
  • Wetting
  7 Downloads (Pure)

• The effectiveness of low salinity waterflooding in naturally fractured reservoirs

  Aljuboori, F. A., Lee, J. H., Elraies, K. A. & Stephen, K. D., Aug 2020, In: Journal of Petroleum Science and Engineering. 191, 107167.

  Research output: Contribution to journal › Article › peer-review

  • Oil well flooding
  • salinity
  • Oils
  • oil
  • Recovery
  4 Citations (Scopus)

• Toward reservoir characterization-comparing inversion methods of a heterogeneous carbonate reservoir in supergiant onshore field

  Al-Ali, A., Stephen, K. & Shams, A., 2020, International Petroleum Technology Conference 2020. International Petroleum Technology Conference (IPTC), IPTC-19762-MS

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Carbonates
  • reservoir characterization
  • inversion
  • carbonate
  • Acoustic properties
  1 Citation (Scopus)

• Using low salinity waterflooding to improve oil recovery in naturally fractured reservoirs

  Aljuboori, F. A., Lee, J. H., Elraies, K. A. & Stephen, K. D., 19 Jun 2020, In: Applied Sciences. 10, 12, 4211.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • oil recovery
  • Oil well flooding
  • salinity
  • Oils
  • Recovery
  1 Citation (Scopus)

  7 Downloads (Pure)
• 2019

  A deep neural network for lithological facies classification: A case studyof the mid-cretaceous reservoir from the giant oil field, Iraq

  Al-Ali, A., Stephen, K. & Shams, A., Oct 2019, SPE Gas and Oil Technology Showcase and Conference 2019. Society of Petroleum Engineers, SPE-198551-MS

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Deep neural networks
  • Oil fields
  • Neural networks
  • Carbonates
  • Lithology

• Analytical and numerical solutions of chemical flooding in a layered reservoir with a focus on low salinity water flooding

  Al-Ibadi, H., Stephen, K. & Mackay, E., 8 Apr 2019, 20th European Symposium on Improved Oil Recovery. EAGE Publishing BV

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Oil well flooding
  • water salinity
  • flooding
  • Recovery
  • Flow of fluids
  7 Citations (Scopus)

• Analytical solution of chemical flooding in heterogeneous non-communicating layers with a focus on low salinity water flooding

  Al-Ibadi, H., Stephen, K. & Mackay, E., 3 Jun 2019, SPE Europec Featured at 81st EAGE Conference and Exhibition 2019. Society of Petroleum Engineers, SPE-195446-MS

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Oil well flooding
  • water salinity
  • flooding
  • Water
  • Solute transport
  6 Citations (Scopus)

• Characterization of channelized systems in a carbonate platform setting: A case study on the Late Cretaceous reservoir from the supergiant oilfield, Iraq

  Al-Ali, A., Stephen, K. & Shams, A., 2019, Society of PeSPE Reservoir Characterisation and Simulation Conference and Exhibition 2019. Society of Petroleum Engineers, SPE-196618-MS

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Carbonates
  • carbonate platform
  • tidal channel
  • Cretaceous
  • Lithology
  1 Citation (Scopus)

• Geological heterogeneous effect on fluid flow and solute transport during low salinity water flooding

  Al-Ibadi, H., Stephen, K. & Mackay, E., 2019, 4th EAGE Conference on Petroleum Geostatistics. EAGE Publishing BV, ThP02

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Salinity
  • Solute transport
  • Solute Transport
  • Flooding
  • salinity

• Gravity drainage mechanism in naturally fractured carbonate reservoirs; review and application

  Aljuboori, F. A., Lee, J. H., Elraies, K. A. & Stephen, K. D., 27 Sep 2019, In: Energies. 12, 19, 3699.

  Research output: Contribution to journal › Review article › peer-review

  Open Access

  File

  • Carbonates
  • Gravity
  • Drainage
  • Gravity Model
  • Recovery
  8 Citations (Scopus)

  100 Downloads (Pure)

• Green synthesis of ZnO/SiO₂ nanocomposite from pomegranate seed extract: Coating by natural xanthan polymer and its characterisations

  Ali, J. A., Kolo, K., Mohammed Sajadi, S., Manshad, A. K. & Stephen, K. D., 29 May 2019, In: Micro and Nano Letters. 14, 6, p. 638-641 4 p.

  Research output: Contribution to journal › Article › peer-review

  • xanthan gum
  • Nanocomposites
  • Seed
  • seeds
  • Polymers
  9 Citations (Scopus)

• Identification of fault systems and characterization of structural model: A case study from the cretaceous reservoir in the Giant Oil Field, Southern of Iraq

  Al-Ali, A., Shams, A. & Stephen, K., 3 Jun 2019, SPE Europec Featured at 81st EAGE Conference and Exhibition 2019. Society of Petroleum Engineers, SPE-195443-MS

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Oil fields
  • oil field
  • Cretaceous
  • Faulting
  • Tectonics
  4 Citations (Scopus)

• Improved carbonate reservoir characterization: A case study from a supergiant field in southern of Iraq

  Al-Ali, A., Stephen, K. & Shams, A., 2019, SPE Middle East Oil and Gas Show and Conference, 18-21 March, Manama, Bahrain. Society of Petroleum Engineers, SPE-194934-MS

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Carbonates
  • Porosity
  • Lithology
  • Acoustic impedance
  • Physics
  8 Citations (Scopus)

• Insights into the fractional flow of low salinity water flooding in the light of solute dispersion and effective salinity interactions

  Al-Ibadi, H., Stephen, K. & Mackay, E., Mar 2019, In: Journal of Petroleum Science and Engineering. 174, p. 1236-1248 13 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • water salinity
  • solute
  • flooding
  • salinity
  • Water
  13 Citations (Scopus)

  27 Downloads (Pure)

• Low-Salinity Polymeric Nanofluid-Enhanced Oil Recovery Using Green Polymer-Coated ZnO/SiO ₂ Nanocomposites in the Upper Qamchuqa Formation in Kurdistan Region, Iraq

  Ali, J. A., Kolo, K., Khaksar Manshad, A. & Stephen, K. D., 21 Feb 2019, In: Energy and Fuels. 33, 2, p. 927-937 11 p.

  Research output: Contribution to journal › Article › peer-review

  • Enhanced recovery
  • Nanocomposites
  • Surface tension
  • Polymers
  • Oils
  22 Citations (Scopus)

• Modification of LoSal water performance in reducing interfacial tension using green ZnO/SiO₂ nanocomposite coated by xanthan

  Ali, J. A., Kolo, K., Manshad, A. K., Stephen, K. & Keshavarz, A., Apr 2019, In: Applied Nanoscience. 9, 3, p. 397-409 13 p.

  Research output: Contribution to journal › Article › peer-review

  • xanthan gum
  • Salinity
  • Nanocomposites
  • salinity
  • Surface Tension
  29 Citations (Scopus)

• Nano-fluid viscosity screening and study of in situ foam pressure buildup at high-temperature high-pressure conditions

  Hamza, M. F., Soleimani, H., Merican, Z. M. A., Sinnathambi, C. M., Stephen, K. D. & Ahmad, A. A., 8 Aug 2019, In: Journal of Petroleum Exploration and Production Technology. p. 1-12 12 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Silica nanoparticles
  • foam
  • Foams
  • nanoparticle
  • Screening
  34 Downloads (Pure)

• New insights into the spatial distribution of complex carbonate channels using geostatistical approach: A case study

  Al-Ali, A., Stephen, K. & Shams, A., 2019, 4th EAGE Conference on Petroleum Geostatistics. EAGE Publishing BV, WeP19

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Spatial Distribution
  • Carbonates
  • carbonates
  • Spatial distribution
  • spatial distribution
  1 Citation (Scopus)

• Novel Observations of Salinity Transport in Low-Salinity Waterflooding

  Al-Ibadi, H., Stephen, K. & Mackay, E., Jun 2019, In: SPE Journal. 24, 3, p. 1108-1122 15 p.

  Research output: Contribution to journal › Article › peer-review

  • Oil well flooding
  • Advection
  • salinity
  • Water
  • Oils
  5 Citations (Scopus)

• Potential application of low-salinity polymeric-nanofluid in carbonate oil reservoirs: IFT reduction, wettability alteration, rheology and emulsification characteristics

  Ali, J. A., Kolo, K., Manshad, A. K. & Stephen, K. D., 15 Jun 2019, In: Journal of Molecular Liquids. 284, p. 735-747 13 p.

  Research output: Contribution to journal › Article › peer-review
  24 Citations (Scopus)
• 2018

  A laboratory study of chemical enhanced oil recovery (CEOR) in compartmentalized sandstone reservoir: A case study of a 2-D phase macro-model reservoir

  Hamza, M., Merican, Z., Soleimani, H., Abghari, S., Sinnathambi, C. & Stephen, K. D., Feb 2018, In: ARPN Journal of Engineering and Applied Sciences. 13, 3, p. 893-901 9 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • enhanced oil recovery
  • sandstone
  • laboratory
  • chemical
  • flooding

• An updated fractional flow model of low salinity water flooding with respect to the impact of salt diffusion

  Al-Ibadi, H., Stephen, K. & Mackay, E., 2018, SPE Trinidad and Tobago Section Energy Resources Conference 2018. Society of Petroleum Engineers, SPE-191222-MS

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • water salinity
  • Salts
  • flooding
  • salt
  • Water
  9 Citations (Scopus)

• A Semi-Analytical Method for History Matching and Improving Geological Models of Layered Reservoirs: CGM Analytical Method

  Ali, J. & Stephen, K. D., 2 Jun 2018, In: Journal of Chemical and Petroleum Engineering.

  Research output: Contribution to journal › Article › peer-review

  • analytical method
  • history
  • simulation
  • spreadsheet
  • simulator

• Assisted seismic history matching of the Nelson field: Managing large numbers of unknowns by divide and conquer

  Stephen, K. D., Dec 2018, In: Journal of Petroleum Science and Engineering. 171, p. 1232-1248 17 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • history
  • uncertainty analysis
  • deconvolution
  • parameter
  • seismic data
  1 Citation (Scopus)

  14 Downloads (Pure)

• Effect of SiO₂ on the foamability, thermal stability and interfacial tension of a novel nano-fluid hybrid surfactant

  Hamza, M., Sinnathambi, C., Merican, Z., Soleimani, H. & Stephen, K. D., Jan 2018, In: International Journal of Advanced and Applied Sciences. 5, 1, p. 113-122 10 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • surfactants
  • interfacial tension
  • thermal stability
  • fluids
  • oil recovery
  175 Downloads (Pure)

• Laboratory Characterization of crude oil and sandstone reservoir for Chemical Enhanced Oil Recovery

  Hamza, M. F., Soleimani, H., Sinnathambi, C. M., Merican, Z. M. A. & Stephen, K. D., 11 Jun 2018, In: World Journal of Engineering . 15, 3, p. 354-361 8 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Petroleum reservoirs
  • Sandstone
  • Enhanced recovery
  • Crude oil
  • Oil fields
  2 Citations (Scopus)

  15 Downloads (Pure)

• Novel Observations of Salt Front Behaviour in Low Salinity Water Flooding

  Al-Ibadi, H., Stephen, K. D. & Mackay, E. J., 22 Apr 2018, SPE Western Regional Meeting, 22-26 April, Garden Grove, California, USA. 16 p. SPE-190068-MS

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • water salinity
  • flooding
  • salinity
  • salt
  • advection
  9 Citations (Scopus)

• One-pot Synthesis and Static Bulk Foam Studies of C₁₈-conjugated Zwitterionic Surfactant

  Hamza, M. F., Soleimani, H., Merican, Z. M. A., Sinnathambi, C. M. & Stephen, K. D., 30 Nov 2018, In: Journal of Physics: Conference Series. 1123, 1, 012063.

  Research output: Contribution to journal › Conference article › peer-review

  Open Access

  File

  • betaines
  • foams
  • surfactants
  • synthesis
  • salinity
  25 Downloads (Pure)

• Optimizing automatic history matching for field application using genetic algorithm and particle swarm optimization

  Sangyhun, L. & Stephen, K. D., 2018, Offshore Technology Conference Asia, 20-23 March, Kuala Lumpur, Malaysia . Offshore Technology Conference, p. 84-111 28 p. OTC-28401-MS

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Particle swarm optimization (PSO)
  • Genetic algorithms
  • Parameterization
  • Aquifers
  • Porosity
  3 Citations (Scopus)

• Uncertainty analysis using design of experiments to assess the development plan of a North Sea field

  Guerrero, A. & Stephen, K., 2018, SPE Trinidad and Tobago Section Energy Resources Conference 2018. Society of Petroleum Engineers, SPE-191244-MS

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Uncertainty analysis
  • development plan
  • uncertainty analysis
  • experimental design
  • Oils
  1 Citation (Scopus)
• 2017

  An Overview of the Present Stability and Performance of EOR-Foam

  Hamza, M. F., Sinnathambi, C. M., Merican, Z. M. A., Soleimani, H. & Stephen, K. D., Sep 2017, In: Sains Malaysiana. 46, 9, p. 1641–1650 10 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • foam
  • enhanced oil recovery
  • oil industry
  • oil field
  • flooding
  2 Citations (Scopus)

• Fracture Conductivity Effect in DFN modelling Using Carbonate Outcrop Data

  Aljuboori, F., Lee, J., Elraies, K. & Stephen, K. D., 18 Dec 2017, Proceedings of the Third Announcement International Workshop on Modelling, Simulation & Optimization for Geosciences & Petroleum Engineering.

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • outcrop
  • conductivity
  • carbonate
  • modeling
  • effect

• The Impact of Contact Area and Fracture Surface Roughness on Fluid Flow in Fractured Reservoirs

  Aljuboori, F., Lee, J., Elraies, K. & Stephen, K. D., 18 Dec 2017, International Workshop on Modelling, Simulation & Optimization for Geosciences & Petroleum Engineering.

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • surface roughness
  • fluid flow
  • permeability
  • fracture network
  • void
• 2016

  High-Resolution studies of polymer flooding in heterogeneous layered reservoirs

  Shotton, M., Stephen, K. D. & Giddins, M. A., 2016, SPE EOR Conference at Oil and Gas West Asia, 21-23 March, Muscat, Oman. Society of Petroleum Engineers, SPE-179754-MS

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Polymers
  • flooding
  • polymer
  • Oils
  • Water
  8 Citations (Scopus)

• New approach for optimization of polymer flooding as an enhanced oil recovery method

  Alikhani, P. & Stephen, K. D., 31 May 2016, 78th EAGE Conference and Exhibition 2016. EAGE Publishing BV

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • oil recovery
  • recovery method
  • Enhanced recovery
  • enhanced oil recovery
  • Polymers
• 2014

  Improved normalization of time-lapse seismic data using normalized root mean square repeatability data to improve automatic production and seismic history matching in the Nelson field

  Stephen, K. D. & Kazemi, A., Sep 2014, In: Geophysical Prospecting. 62, 5, p. 1009-1027 19 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • normalization
  • seismic data
  • history
  • prediction
  • attribute
  12 Citations (Scopus)

  132 Downloads (Pure)
• 2013

  Observed spatial statistics of permeability and the effects on fluid flow: are we getting it right?

  Lin, X-Q., Stephen, K. D. & Steele, R., 2013. 22 p.

  Research output: Contribution to conference › Paper

  • variogram
  • fluid flow
  • statistics
  • permeability
  • outcrop

• Optimal parameter updating in assisted history matching using streamlines as a guide

  Kazemi, A. & Stephen, K. D., May 2013, In: Oil and Gas Science and Technology. 68, 3, p. 577-594 18 p.

  Research output: Contribution to journal › Article › peer-review

  • history
  • parameter
  • prediction
  • well
  • shale
  3 Citations (Scopus)

• Optimizing the integration of 4D seismic data in history matching: which data should we compare?

  Sagitov, I. R. & Stephen, K. D., Jun 2013, 75th European Association of Geoscientists and Engineers Conference and Exhibition 2013: Changing Frontiers: Incorporating SPE EUROPEC 2013. Houten: EAGE Publishing BV, p. 5834-5846 13 p.

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • seismic data
  • history
  • nonlinearity
  • comparison
  • acoustics
  1 Citation (Scopus)