Problem: Curvature Index indicates high risk of drill pipe fatigue Solution: Compare alternative trajectories and drill string designs to lower Curvature Index and reduce risk of fatigue failure

Problem: Casing connection unsuitable for critical portion of well Solution: Use FEA modeling to analyze casing loads and select alternative connection

Problem: Improper stabilizer placement and poor choice of drill collar connection type will accelerate fatigue damage Solution: Perform comprehensive BHA analysis to optimize fatigue resistance and switch from 6 5/8 reg to NC56 connections on collars

Problem: Load rating error in safety valve will lead to heavy-duty landing string failure Solution: Compute load rating through FEA modeling as part of comprehensive landing string analysis and compare results to expected landing loads

Problem: Reactive torque could cause connection back-off below underreamer Solution: Perform reactive torque analysis to determine adequate make-up torque for avoiding connection back-off

Problem: Stability Index Exceeds DS-1® Third Edition Design Constraints- BHA Fatigue Failure Probable Solution: Modify BHA design to improve fatigue performance and adjust inspection frequency of BHA components

Specialization. Innovation. Independence. These three words define how we approach engineering services at T H Hill. For more than 25 years, we have focused on maintaining the structural integrity of equipment used during drilling operations while emphasizing the importance of design considerations in preventing failure. When limited by available technology or design methodologies, we have created our own, such as proprietary software, DS-1^® Third Edition Design Groups, and complex fatigue estimation and mitigation techniques. Additionally, within the confines of your drilling program, we perform each analysis independent of outside influence. This means you receive not only the most advanced and comprehensive structural design possible, but also a result unbiased by commercial factors. By taking this position, we ensure that the only thing that drives our recommendations is the practical application of technology to your drilling program.