A secondary recovery method for the production of oil from a formation. Oil will float on water. When water is injected into some formations, the oil will float or be washed to the surface, thereby, increasing the amount of production from a well or field. Some formations will not react to this type of stimulation.

The best known secondary oil recovery technique in which water is injected into the producing formation to maintain reservoir pressure and force the oil towards to producing well bore. Water flooding typically yields up to 80% of the conventional light crude oil and approximately 10% of heavy crude oil from a reservoir.

The injection of water into an oil reservoir to “push” additional oil out of the reservoir rock and into the well bores of producing wells.