In this article I learned about a relatively new process referred to as refracking. This technique involves identify aging, low-output wells and hit them with a blast of sand and water to bolster the flow of crude. This is important because it can re vitalize old wells that have shown a decline in output. The wells on average produced more than 30 percent more oil in the month after the refrack than they did after the original completion. this is really exciting for large oil producing companies because it is way cheaper to refract a well then to completely find and build a new well.