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Petroleum gas has been stored successfully in unlined caverns in Norway for more than 25 years. Air cushion surge chambers with compressed air have been in use since 30 years ago. The main containment principles are hydrodynamic control of the groundwater and permeability control of the rock mass...

Clinoforms are aquatic sedimentary features commonly associated with strata prograding from a shallower water depth into a deeper water depth. They are very sensitive to changes in water depth, rapidly moving along the shelf in response to sea level changes. By reconstructing the initial clinoform...

Cement sheaths undergo extreme loading conditions in wells during subsurface operations. A damaged cement sheath may lead to fluid communication between different formation layers and fluid migration up to the surface, which can cause environmental, technical, and economic problems. In this study...

Overburden stresses and pore pressure are altered by depletion or inflation of a subsurface reservoir, leading to seismic travel time and reflectivity changes that may be interpreted as footprints of reservoir drainage or injection. Our objective is to contribute to the quantification of expected 4D...

Creep in weak rock is a common phenomenon observed in the laboratory. Based on short-term creep, prediction of long-term creep can be a challenge especially at elevated stress levels, since only a small stress increase may change the creep behavior from stable to an unstable. The original power law...

Fracture toughness and tensile strength are rock parameters that have influence on hydraulic fracture initiation and propagation, and that to various degrees are implemented in fracture modeling tools. Laboratory measurements represent a valuable source of such data. In particular, the relation...