When CO2Carbon dioxide is stored as a component of EOREnhanced Oil Recovery: the recovery of oil additional to that produced naturally, achieved by fluid injection or other means projects, the initial depletion of the reservoirA subsurface body of rock with sufficient porosity and permeability to store and transmit fluids, and all the influences associated with exploitation, production, and EOREnhanced Oil Recovery: the recovery of oil additional to that produced naturally, achieved by fluid injection or other means processes may affect the integrity of bounding seals. Jimenez et al., 2005 studied the integrity of the Weyburn system under EOREnhanced Oil Recovery: the recovery of oil additional to that produced naturally, achieved by fluid injection or other means-CO2Carbon dioxide storage(CO2) A process for retaining captured CO2, so that it does not reach the atmosphere conditions using a mechanical earth model. A geomechanical analysis of the system was carried out using the pressure information in an explicit coupling where pressures were used as input for a geomechanical model. The large stiffness of the reservoirA subsurface body of rock with sufficient porosity and permeability to store and transmit fluids and the low pressure gradients lead to a minimum distortion of the reservoirA subsurface body of rock with sufficient porosity and permeability to store and transmit fluids and bounding seals, and insignificant changes in the in-situ stresses. Consequently, the hydraulic integrity of the caprockRock of very low permeability that acts as an upper seal to prevent fluid flow out of a reservoir is preserved throughout the pre-CO2Carbon dioxide injectionThe process of using pressure to force fluids down wells history of the reservoirA subsurface body of rock with sufficient porosity and permeability to store and transmit fluids, and the uniformity of caprockRock of very low permeability that acts as an upper seal to prevent fluid flow out of a reservoir deformations has little influence on wellboreThe physical hole that makes up the well, it can be cased, open, or a combination of both; open means open for fluid migration laterally between the wellbore and surrounding formations; cased means closing of the wellbore to avoid such migration hydraulic integrity. In addition, pressures were increased synthetically to assess the performance of the reservoirA subsurface body of rock with sufficient porosity and permeability to store and transmit fluids post-EOREnhanced Oil Recovery: the recovery of oil additional to that produced naturally, achieved by fluid injection or other means or in the actual CO2Carbon dioxide storage(CO2) A process for retaining captured CO2, so that it does not reach the atmosphere phase. It was found that hydraulic fracturing will be due to the mechanism of failure instead of shear failure. Therefore, the authors proposed that in order to maximise the volume of CO2Carbon dioxide stored, it will be necessary to adjust the operation of the field to raise the pressure as uniformly as possible and maintain good control of injectionThe process of using pressure to force fluids down wells pressures.
Vidal-Gilbert et al., 20092009 - S. Vidal-Gilbert, J.-F. Nauroy and E. Brosse3D geomechanical modelling for CO2 geologic storage in the Dogger carbonates of the Paris Basin, Intsee more modelled the geomechanical behaviour of an oil field reservoirA subsurface body of rock with sufficient porosity and permeability to store and transmit fluids that is used as a CO2Carbon dioxide storage(CO2) A process for retaining captured CO2, so that it does not reach the atmosphere medium. In situ stresses and rock mechanical properties were determined using a 3D model. The pressure data obtained from reservoirA subsurface body of rock with sufficient porosity and permeability to store and transmit fluids simulations were integrated as input for a geomechanical model. Hence, the coupling is called a one-way coupling. The stress changes extracted from the model were also combined with a Mohr-Coulomb analysis to determine the fault slipThe extent to which a fault has slipped in past times tendency.