Studies show that open or partially open underground storage systems provide sufficient pressure relief for safe carbon dioxide storage. These findings were published by scientists from the Earth Sciences Division at the Lawrence Berkeley National Laboratory (Berkeley Lab) in the new journal Greenhouse Gases: Science and Technology.
Earlier studies by scientists Christine Ehlig-Economides and Michael Economides have questioned whether carbon dioxide storage is feasible with the amount of pressure created. Scientists from The Berkeley Lab refute this, saying that the studies only consider storage in closed storage reservoirs.
Lead Berkeley Lab researcher Quanlin Zhou studied full-scale deployment scenarios with open, partly open and closed storage reservoirs. The conclusion is that in open and partly open systems the pressure build up is relieved naturally by movement of native saline waters into regions far away from where carbon dioxide injection occurs. The study also concludes that pressure management strategies may feasibly be undertaken to relieve a pressurised system.
- This investigation furthers our understanding of the extent and magnitude of pressure build-up induced by large-scale underground carbon storage. Using natural open and partially open formations will help attenuate such pressure build-up to a manageable degree, said Zhou according to Science Daily.