Next-Generation HP/HT Subsea-Wellhead-System-Design Challenges and Opportunities

摘要

Moving to higher-capacity wellhead systems for high-pressure and high-temperature (HP/HT) environments will require a larger mandrel and conductor-casing size to accommodate the high loads encountered during drilling and production operations for normal-, extreme-, and survival-loading conditions. Numerous analytical studies with 3D finite-element analysis (FEA) and other advanced tools have been performed in an effort to determine the changes needed, and an innovative solution is presented for next-generation subsea-wellhead equipment.