Abstract
The petroleum industry is facing challenging circumstances, including expensive and complex exploration, and the extraction of most hydrocarbons from depleted or lower quality reservoirs. Moreover, current oil prices are at a peak, compelling the industry to re-evaluate its methods and technologies to improve recovery and cut costs. Adopting new technologies, specifically Underbalanced Drilling Technology (UBD), is viewed as crucial for increasing reserves, boosting recovery, reducing expenses, and augmenting revenue. The process of Underbalanced drilling involves intentionally reducing the density of drilling fluid to create lower hydrostatic pressure in the wellbore than the pore pressure in the formation. This technique allows the production of reservoir fluids while drilling, leading to several benefits such as discovering new zones, minimizing formation damage, and increasing well drainage area, which can ultimately increase reserves. However, it is important to note that UBD is not a one-size-fits-all solution and should be planned and executed with caution to avoid over-application or failure, depending on the characteristics of the field, wells, or drilling issues. Keywords: Underbalanced drilling, depleted, technology, hydrocarbons.
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