(2023006) Using Advanced Diagnostics and Rod Stress Data to Improve Operation Conditions

Given several pumping cycles worth of surface card data, the dv8 advanced diagnostics model is solved and the rod displacements, axial loads and sideloads are calculated, starting from the polished rod and propagating to the pump. From the axial load, the rod stress is computed. The points along the rod string are then analyzed using a modified Goodman diagram applicable to the type of rod string used. The maximum stress experienced by the rod is compared to the maximum allowable stress to determine if the rod string is overloaded. Review of case studies and results are published.