Completion Engineering is a branch of petroleum engineering focused on the design and implementation of systems that allow for the efficient extraction of oil and gas from wells. This discipline involves selecting the appropriate materials and technologies to ensure that the well can be safely and effectively produced over its lifespan. The process includes planning the well's completion, which may involve the use of casing, cementing, and perforation techniques. Completion engineers work closely with geologists and drilling engineers to optimize production while minimizing environmental impact and operational costs.