BP Exploration in Alaska were planning Coiled Tubing (CT) operations on wells that have components in the wellhead stack with 2-9/16", 5,000 psi components at the bottom of the stack. There was a concern that the CT intervention stack and associated equipment could damage these small wellhead components during the well intervention process.

A finite-element analysis (FEA) was performed of the intervention stack, followed by a field test in which a bending moment and force measuring gauge was used to measure the actual moments and forces being applied. Results from the field test were used to improve the FEA modeling.This paper presents the results from the modeling and the field test, and discusses the conclusions from this study.

You can access this article if you purchase or spend a download.