Task 1: Core scale

These are the projects in Task 1.

Project title: DOUCS-Deliverable Of an Unbeatable Core scale Simulator
Project managers: Aksel Hiorth (UiS/IRIS), Arild Lohne (IRIS) and Aruoture Omekeh (IRIS)
Objective: To develop a tool for improved simulation of EOR processes at the core-, sector- and pilot scale

Project title: Core plug preparation procedures
Project manager: Ingebret Fjelde
Objective: To identify critical steps in core preparation procedures.

Project title: Wettability estimation by oil adsorption (PhD project)
Project manager(s): Ingebret Fjelde (IRIS), Aruoture Voke Omekeh (IRIS) and Samuel Erzuah (UiS)
Objective: The main objective of this project is to develop a method to estimate the wettability conditions of reservoir rocks based on the wettability of minerals mainly in contact with flowing the fluid phases. This will be achieved using a Quartz Crystal Microbalance with Dissipation (QCM-D) device.

Project title: Core scale modeling of EOR transport mechanisms (PhD project)
Project manager(s): Oddbjørn Nødland (UiS), Aksel Hiorth (UiS/IRIS), Hans Kleppe (UiS) and Anders Tranberg (UiS)
Objective: To develop a numerical simulation tool and apply this to core scale data in order to gain a better understanding of various chemical processes occurring at a core scale.

Project title: Application of metallic nanoparticles for enhanced heavy oil recovery (PhD project)
Project manager(s): Zhixin Yu (UiS), Svein M. Skjæveland (UiS), Kun Guo (UiS)
Objective: The objective of this project is to perform a systematic study of the effect of metallic nanoparticles on enhanced heavy oil recovery, which covers the topics of the main cause of viscosity reduction, the parameters of nanoparticles and the thermophysical properties of nanoparticles containing fluids (nanofluids) on the recovery factor. The project also aims to investigate in-situ heavy oil recovery using a model core (e.g. Sand pack), as well as the synergistic effect of SiO2-supported nanoparticles on ultimate heavy oil recovery.

Project title: How does wetting property dictate the mechanical strength of chalk at in-situ stress, temperature and pore pressure conditions? (PhD project)
Project manager(s): Jaspreet Singh Sachdeva (UiS), Anders Nermoen (UiS), Merete Vadla Madland (UiS) and Reidar Inge Korsnes (UiS)
Objective: To determine and evaluate the effect of wettability alteration on the mechanical properties of chalk. To close the causal gap between wetting property and the mechanical integrity of chalk.

Project title: Thermal properties of reservoir rocks, role of pore fluids, minerals and digenesis. A comparative study of sandstone, shale and chalk (PhD project)
Project manager(s): Tijana Livada (UiS), Anders Nermoen (UiS) and Ida Lykke Fabricius (UiS/DTU)
Objective: Destabilization of different reservoir rocks due to thermal cycling, caused by the injection of low temperature flooding fluid. Can thermal expansion differences at a grain level lead to the degradation of inter-granular cementation in chalks?

Project title: Flow of non-Newtonian fluids in porous media (PhD project)
Project manager(s): Irene Ringen (UiS), Aksel Hiorth (UiS/IRIS), Olav Aursjø (IRIS) and Arne Stavland (IRIS)
Objective: To develop physical (mechanistic) models based on laboratory experiments that are capable of describing the sweep efficiency of non-Newtonian fluids in porous media for flooding conditions representative of the Norwegian Continental Shelf (NCS).

Project title: Integrated EOR for heterogeneous reservoirs (Phase 2)
Project manager(s): Martin Fernø (UiB), Geir Ersland (UiB) and Arne Stavland (IRIS)
Objective: There are three research objectives in the Post Doc project. 1. To optimize polymer gel and foam mobility control. Foam and polymer gel will be further developed for an in-depth use. Especially relevant is the combination of polymer/polymer gel and foam injection through the use of Polymer-Enhanced Foams (PEFs) and Foamed Gels (FGs). 2. To use improved mobility control in Integrated Enhanced Oil Recovery (IEOR). Combining EOR methods with mobility control in specially designed, integrated processes (IEOR) has previously been found to increase oil recovery from oil-wet, heterogeneous systems by significantly improving sweep efficiency. Oil recovery was found to depend on the chase fluid, which largely controls the shape of the displacement front and thus the macroscopic sweep efficiency. In Objective 2, mobility control will be combined with surfactant, CO2 or low salinity water in smart sequences for IEOR. 3. Numerical modeling and upscaling of IEOR. This objective aims to include IEOR methods and process mechanisms in numerical simulators in a way that is both representative and accurate; firstly at a core scale and thereafter at a reservoir grid and field scale.

Project title: From SCAL to EOR – Phase II
Project manager: Dagfinn S. Sleveland (IRIS)
Objective: To demonstrate how initial EOR testing and evaluation can be performed in conjunction with SCAL analysis. By strengthening the link between SCAL on reservoir cores and testing of EOR methods, possible EOR methods can be identified at an early stage and may support utilizing EOR.

Project title: Permeability and stress state (PhD project)
Project manager(s): PhD student (UiS), Merete Vadla Madland (UiS), Reidar Inge Korsnes (UiS), Pål Østebø Andersen (UiS)
Objective: During the lifetime of petroleum reservoirs, the pore pressure may decrease or increase depending on the production stage. These changes in pore pressure alter the effective stresses and lead to deformation of the porous rock. Injected fluids can also induce chemical reactions that alter mineralogical structure and strength. It is crucial to understand these processes in order to predict fluid flow, oil recovery and to select optimal injection brines. The main objective of this project is therefore to study permeability evolution in chalk/carbonates as well as in sandstones at different stress states in order to predict permeability behaviour under actual reservoir conditions. As a secondary objective, models will also be considered to interpret the experimental data.

Project title: Understanding the initial wettability of reservoirs
Project manager: To be decided
Objective: This PhD-study contains several parts with the
following objectives:

  • Analyse rock-brine interactions to evaluate if crude oil components should be able to wet mineral surfaces when introduced at reservoir temperature.
  • Identify mineral distribution in the matrix/pore wall system, that are important for the brine-solid interactions, and thus also for the wettability induced by crude oil interactions. The oil components with affinity to mineral surfaces, will be identified in effluent analyses of produced oil. The potential for modifying core wettability and observing Smart Water EOR effects will be investigated for specific crude oil – brine – rock systems.
  • Model the dominating crude oil – brine – rock interactions at mineral surfaces, focusing on short-term dynamic ion exchange between oil and brine components and the mineral surface.

Project title: Reservoir wettability and its effect on water based recovery processes
Project manager: Ivan Pinerez Torrijos
Objective: To optimize core cleaning and core restoration procedures for representative wettability.
To improve the understanding of the factors influencing the initial wetting in carbonate reservoirs. The
generated knowledge on core restoration and initial wettability will be used to increase the understanding of Smart Water EOR potential.

Project title: Mineralogical influence on reservoir wetting and Smart Water EOR processes
Project manager: To be decided
Objective: The objective of this study is to investigate the physical properties of typical sandstone reservoir
minerals, their chemical surface reactivity and its impact on initial wetting and wettability alteration by ion-
modified Smart Water. Simplified models to be used in reservoir simulators will be suggested.

Project title: Upscaling of polymer and Smart Water processes
Project manager: To be decided
Objective: Develop IOR models on reservoir simulation scale that are consistent with core- and pore-scale displacement mechanisms.

  • Arne Stavland

    Task 1: Core scale

    Task leader: Arne Stavland, NORCE

    The aim of this task is to design novel experiments on core scale and develop models that capture the transport mechanisms observed. The deliverables of this task will be chemical systems that can improve the microscopic and microscopic sweep on clastic and chalk fields.

    Read more about the projects in Task 1 here

  • Udo Zimmermann

    Task 2: Mineral fluid reactions at nano/submicron scale

    Task leader: Udo Zimmermann, UiS

    The research focuses on rock-fluid interactions when injecting fluids into rock formations, clastic or chemical sedimentary rocks. We use electron microscopy, Raman spectroscopy, specific surface area measurements and X-Ray Diffraction for further investigations of EOR related experiments. The geology of the hydrocarbon bearing formations plays a significant role.

    Read more about the projects in Task 2 here

  • Espen Jettestuen

    Task 3: Pore scale

    Task leader: Espen Jettestuen, NORCE

    The focus in this task is to study the interplay between fluid transport, mineral reactions and oil recovery in reservoir rocks at pore scale. The main aspects are to identify the mechanisms that influence transport and reactions on the pore scale using experiments and numerical modeling, and then to evaluate if these mechanisms are important on the core scale.

    Read more about the projects in Task 3 here

  • Aksel Hiorth

    Task 4: Upscaling and environmental impact

    Task leader: Aksel Hiorth, UiS/NORCE

    The main objective is to translate the knowledge we have about EOR processes on core scale to field scale. The deliverables from this task will be simulation models and work flows that can be used to design IOR operations and interpret IOR implementations.

    Read more about the projects in Task 4 here

  • Tor Bjørnstad

    Task 5: Tracer technology

    Task leader: Tor Bjørnstad, IFE

    The objective is the development of tracer technology to measure reservoir properties and (changing) conditions during production. The most important condition is the (remaining) oil saturation, either in the flooded volume between wells (interwell examinations) or in the near-well region out to some 10 m from the well (single-well huff-and-puff examinations).

    Read more about the projects in Task 5 here

  • Robert Klöfkorn

    Task 6: Reservoir simulation tools

    Task leader: Robert Klöfkorn, NORCE

    The primary objective of this task is to advance the state-of-the-art of modeling and simulation in context of reservoirs. Such advance is needed to cope with the challenges arising from scientific questions and targets of The National IOR Centre of Norway.

    Read more about the projects in Task 6 here

  • Geir Nævdal

    Task 7: Field scale evaluation and history matching

    Task leader: Geir Nævdal, NORCE

    We do history matching using 4D seismic data, tuning reservoir parameters to obtain reservoir models that are matching actual observations. We are using ensemble based methods, running with a set of different realizations of the parameter set and use statistical methods to tune the parameters. The outcome is models that are aligned with actual observations.

    Read more about the projects in Task 7 here