Secondary recovery is a method used in the oil and gas industry to extract additional resources from a reservoir after the primary recovery phase. During primary recovery, natural pressure and pumping techniques are used to bring oil to the surface. However, this process typically only recovers about 20-30% of the available oil. To enhance extraction, secondary recovery techniques, such as water flooding or gas injection, are employed. These methods involve injecting water or gas into the reservoir to maintain pressure and push more oil towards the production wells, increasing the overall recovery rate significantly.