Long gone are the days when one drilled wells into an underground reservoir, and up came the oil. But there is much oil left. In some fields, it is possible to boost oil recovery by injecting water in strategic locations to push the oil towards the wells. At the Danish Hydrocarbon Research and Technology Centre’s core flooding laboratory, researchers now focus on identifying the most suitable advanced water flooding technique using modified seawater – and the addition of dimethyl ether is one of the options that shows significant technical potential.

Iris Fernandes, PhD student at the Niels Bohr Institute at University of Copenhagen, is part of the AWF1 programme. Here she tells you about how she does research in Computational Geoscience.

DHRTC's hypothesis

The use of modified seawater could be a valuable way of increasing oil recovery and is being tested on samples from two North Sea chalk formations, Ekofisk and Tor.

DHRTC’S HYPOTHESIS
  • Changing the chemical properties of the injected water can increase oil production from the Dan and Halfdan fields
  • Natural and induced fractures can increase productivity, compaction and sweep
DHRTC RESEARCH
  • The identification of suitable IOR/EOR methods
  • The development of a discrete fracture network (DFN) geomodel
  • Outcrop and geostatistical research for upscaling and calibration of subsurface models
  • Processes for water-based recovery and laboratory-scale experiments
  • Core flooding models for use in laboratory-scale experiments
  • Numerical reservoir modelling and simulation