An inverse method for estimating thickness and volume with time of a thin CO2-filled layer at the Sleipner Field, North Sea

CO2 distribution within Layer 9

Migration of CO2 through storage reservoirs can be monitored using time lapse seismic reflection surveys. At the Sleipner Field, injected CO2 is distributed throughout nine layers within the reservoir. These layers are too thin to be seismically resolvable by direct measurement of the separation between reflections from the top and bottom of each layer. Here we develop and apply an inverse method for measuring thickness changes of the shallowest layer.

Halogen bonding in 2d physiosorbed systems

 monolayer structure of the 2-D cocrystal (tfib)(bipy)

Physiosorption of large molecules onto surfaces has been an area of longstanding interest for the Clarke group. Simple Van der Waals forces act to keep the molecules attached to the surface, while a variety of intermolecular interactions can lead to spontaneous self-assembly in the plane parallel to the surface. Confinement to two dimensions leads to novel phase behaviour, as well as allowing intermolecular interactions to be more easily characterised.

Gravity currents: entrainment, stratification and self-similarity

saline gravity currentTurbulent gravity currents are produced when a finite volume of dense fluid is rapidly released from a source above a horizontal boundary into an environment of lower density. The dense fluid propagates horizontally under gravity along the lower boundary of the flow domain by displacing the original fluid in place. Owing to the considerable importance of gravity currents in many geophysical and environmental flows, their dynamics have been studied in some detail, using a combination of laboratory experiments and mathematical models.

Flow in Porous Rocks by Prof A Woods

Flow in Porous Rocks

Focusing on simplified models of physical flow processes, this book develops a series of quantitative models to describe the recovery of oil and gas from hydrocarbon reservoirs (including fracking), the physics of geo-sequestration of CO2, geothermal power production, and the potential for underground contaminant dispersal in the long-term storage of nuclear waste. The author approaches these problems by developing simplified mathematical models and identifying the key dimensionless variables that control the processes.

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