​​​​​​​Abstract: Completion tools are installed for oil/gas production after drilling operation. The main completion tools include flow control, safety valve, liner hanger, packer, etc. Design verification is a rigorous analysis process to ensure that the designed tool has enough margin or protection against failure for the anticipated downhole operating conditions. A completion tool is usually designed and test validated along a performance envelope. In the performance plot, one axis is the axial load, the other axis is the (differential) pressure. The performance envelope illustrates the combined effects of (differential) pressure and axial loads at the rated temperature and defines the maximum safe operational limit of the tool. The performance envelope is usually derived from a customer’s Statement of Requirement (SOR), and the customer’s well-operating conditions are on/within the rated performance envelope. In this presentation, the latest design verification requirements for safety valve (API 14A), packer (API 11D1), and liner hanger (API 19LH) are compared, the safety margin/load factor and failure mode analysis for the performance envelope of a liner hanger using Abaqus are demonstrated, and the effect of ovality on the performance rating is discussed. Investigation of safety valve structural integrity during a valve slam event (to prevent well blowout) using Abaqus is also demonstrated.

Biography: Dr. Goang-Ding SHYU graduated from the Polymer Engineering Department of the University of Akron.  After graduation, he worked for the Vinyl Building Product Group of CertainTeed Corporation and worked on rigid PVC formulating and profile extrusion flow analysis.  He joined Baker Hughes in 1996 and has been working on polymer materials, failure analysis and finite element analysis for downhole completion tools.  He led the Modeling and Simulation group of the Completion & Wellbore Intervention division of Baker Hughes from 2008 to 2014. Today he is a technical advisor. His current research interests include modeling of high-temperature, long-term sealing performance and rapid gas decompression of elastomers.

RUM2022 ​​​​​​​RUM2022-Houston Abaqus ​​​​​​​