المجلة الدولية للعلوم والتقنية

One of the most serious issues in drilling is mud loss. The term "lost circulation" describes this situation. It can be produced in formations through drilling as well as exist in naturally fractured formations. The failure of the primary cement job due to not getting the cement up to the desired height, which then resulted in sustained casing pressure and corrosion, the loss of the ability to perform work over activity on certain wells, and mud losses during drilling that resulted in cost overruns and HSE concerns. This paper's goals are to describe the extreme lost circulation problem and present a cement plug formulation to address it. The use of a cement plug in three wells in the Belhedan field which is operated by Waha Oil Company is finally reported. According to the findings, the quantity of cement used in each plug and the duration of the loss interval determine how many cement plugs are needed for each well. Additionally, as the absorption factor declines, the failure rate of cement plugs after drilling rises.