Enhanced Oil Recovery

The primary focus of the research on Enhanced Oil Recovery (EOR) is reservoir stability during and after an Enhanced Oil Recovery (EOR) procedure. The research performed involves fluid-rock interactions that make it possible to get more oil out of the hydrocarbon reservoir. Fluid-rock interaction during EOR processes could have affects on the grain surfaces and contact between the grains. The impacts of EOR processes on porosity, permeability, wettability and stiffness of rocks are investigated. The effective stress coefficient is used, as defined by Biot, as a key parameter for assessing effective stress working on the reservoir. The changes in effective stress coefficient due to EOR processes are tracked. The velocity of elastic wave propagation in rocks (VP and VS), electrical resistivity and Nuclear Magnetic Resonance (NMR) are used as primary tools for monitoring changes in hydrocarbon reservoir samples. Our objective is to provide a geomechanical model based on laboratory data so that compaction and subsidence can be predicted as well as monitored during and after EOR processes by using 4D seismic data.

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Projects

Smart Water – Advanced Waterflooding of Danish Oil and Gas Reservoirs

Smart water is an advanced waterflooding method. Advanced waterflooding is a collection of new promising methods of improved/enhanced oil recovery. Unlike other EOR methods, like surfactant or polymer-micellar flooding, the novel methods may improve the recovery without high additional expenses, and help to avoid accompanying logistical and environmental problems. The “smart water” injection strategy is based on laboratory experimental observations that variation of the injected water salinity and of its ion balance may result in large additional recovery. The objectives of this research are:

  • To find the mechanisms behind the action of smart water.
  • To investigate the effect of differences in rock type, e.g. chalk, sandstone.
  • To investigate the effect or reservoir fluid.
  • To find a cheap source of smart water. 
 

PhD Projects

Rock Physics of Reservoir Rocks With Varying Pore Water Saturation and Pore Water Salinity

Part of: Smart Water – Advanced Waterflooding of Danish Oil and Gas Reservoirs

PhD Student Konstantina Katika

 

Researcher

Ida Lykke Fabricius (contact person)

Contact

Ida Lykke Fabricius
Professor, head of section
DTU Civil Engineering
+45 45 25 21 62