Business Optimization Strategies in HPHT Drilling Operations: Impact of Formation Pressure, Casing Design, and Drilling Fluids on Wellbore Stability in High-Pressure High-Temperature Wells

Abstract

This research investigates the optimization strategies in high-pressure, high-temperature (HPHT) drilling operations, focusing on the impact of formation pressure, casing design, and drilling fluids on wellbore stability in HPHT wells. Using Well MJ-138 in Iraq as a case study, the study aims to identify critical factors affecting wellbore integrity and propose effective optimization techniques to enhance operational safety and reduce costs in HPHT drilling projects. A quantitative research methodology was employed, using field data from Well MJ-138 to analyze the interaction between formation pressures, casing design, and drilling fluid properties. The study utilizes formation pressure modeling, casing design optimization, and fluid rheological analysis to assess their impact on wellbore stability. The findings indicate that precise formation pressure models, coupled with tailored casing designs and optimized drilling fluids, significantly enhance wellbore stability, reducing non-productive time and operational risks. The integration of advanced casing materials and fluid formulations minimizes the potential for borehole collapse, fluid influx, and differential sticking. This study highlights the importance of a multidisciplinary approach in HPHT drilling operations, offering practical recommendations that improve safety, operational efficiency, and profitability.