InjectionThe process of using pressure to force fluids down wells of CO2Carbon dioxide into saline formations creates strong buoyancyTendency of a fluid or solid to rise through a fluid of higher density forces because of the large density difference between CO2Carbon dioxide and the formationA body of rock of considerable extent with distinctive characteristics that allow geologists to map, describe, and name it waterWater that occurs naturally within the pores of rock formations. The strength of the buoyancyTendency of a fluid or solid to rise through a fluid of higher density forces in oil reservoirs is not as high as in saline aquifers and depends on the miscibility of the CO2Carbon dioxide and oil. In oil reservoirs and saline formations, the buoyant CO2Carbon dioxide plumeDispersing volume of CO2Carbon dioxide-rich phase contained in target formationA body of rock of considerable extent with distinctive characteristics that allow geologists to map, describe, and name it migrates upwards. With CO2Carbon dioxide being denser than the natural gasGas stored underground; It consists largely of methane, but can also contain other hydrocarbons, water, hydrogen sulphide and carbon dioxide, these other substances are separated before the methane is put into a pipeline or tanker, the migrationThe movement of fluids in reservoir rocks takes place in the opposite direction in a depleted(hydrocarbon reservoir) one where production is significantly reduced gas reservoirA subsurface body of rock with sufficient porosityMeasure for the amount of pore spaceSpace between rock or sediment grains that can contain fluids in a rock and permeabilityAbility to flow or transmit fluids through a porous solid such as rock to store and transmit fluids.