Javier Holzmann
Technische Universität Clausthal, Germany
Title: Experimental Validation Of Methods To Simulate Make Up Processes in Oilfield Country Tubular Goods.
Biography
Biography: Javier Holzmann
Abstract
As a fundamental condition towards making use of the maximum performance of a threaded connection, the make up process bears great importance for getting the necessary preloading of the joint, which enables a determined tubular string to be tight and to withstand all static and dynamic load modes present during the whole life of the well. However, due to the design nature of premium connections, it can be somewhat complicated to determine the optimum amount of applied torque which is big enough to make up the connection and achieve service tightness, but also small enough to avoid the development of some failure modes, like those related to excessive plastic deformation and galling . The purpose of this work aims to better understand the elastoplastic phenomena present during make up procedures by means of experimental validation of an axial-symmetric model for bilinear materials, that is typically used for FE models during the design phase of OCTG proprietary connections.