Study on Casing Safety Evaluation in High-Temperature Wells with Annular Pressure Buildup

In high-temperature wells, annular pressure buildup (APB) caused by temperature increase is a widespread phenomenon in production, especially offshore thermal recovery wells. It increases the load on tubing and casing consequently threatens wellbore integrity. Hence, research safety evaluation APB management has great significance for field production. this paper, limit determination methods are presented considering effect of stress APB. Based case study an well, APB-management chart recommended optimal range provided. Finally, analysis three commonly used mitigation presented. The parameters these further discussed. results show that phenomena affect distribution may bring danger to Maintaining necessary be kept below critical value given paper. Injecting nitrogen annulus A installing rupture disks both effective improve safety. study, decrease percentage more than 75% when injected A. However, pressure, installation depth disk need determined via evaluation. optimizing steel grade thickness not significant. They can as assistance other adopted.