Many, perhaps most, crustal rocks contain fluids. Those rock bodies in which fractures partly or entirely control the fluid transport may be defined as ˜fractured reservoirs". Such reservoirs are of fundamental importance for various theoretical and applied fields of earth sciences. These include hydrogeology, petroleum geology, geothermy, nuclear waste storage, and, most recently, CO2-sequestration. In the past years there has been a large increase in research of fractured reservoirs of crustal fluids, but this research has been scattered within various disciplines. The aim of this session is to bring together the cutting-edge research on fractured reservoirs from the various disciplines so as to provide a comprehensive overview of the state of the art.

This session includes, but is not restricted to, the following topics:
- fracture initiation, propagation, emplacement, and arrest in fluid reservoirs;
- effects of fractures on reservoir permeability;
- infrastructures of fault zones, mechanical and hydraulic behaviour (faults as pathways, or as barriers, to fluid flow);
- effects of the current stress field on fluid flow in fractured reservoirs;
- realistic interpretations of fracture systems at depth;
- realistic predictions of fracture systems and associated permeability at depth;
- realistic simulations of flow and transport in fractured reservoirs.

We strongly encourage contributions based on results from fieldwork, geophysical measurements, reservoir exploration and engineering, and conceptual, analytical, analogue, and numerical models.