CORROSÃO-FADIGA NAS ARMADURAS DE TRAÇÃO DE UM RISER FLEXÍVEL DO TIPO UNBONDED

Abstract

This work aims to present the flexible riser of the unbonded type widely used in the production of oil and gas, thus describing its structure, the materials used and the function of each of its layers, especially the traction armors. Such an approach is justified through the perception of the human need for oil and gas derivatives. Currently, oil and gas production has undergone great technological advances, which has allowed us to overcome challenges, such as producing at great depths on the high seas. Flexible risers of the unbonded type are one of the main means of producing oil and gas. These structures suffer from excessive degradation due to the material and environment to which they are exposed. Such exposure accelerates the wear process of the same, causing several failures among which this work will focus on the causes of failure by corrosion-fatigue in the traction armatures. The present work presents the model of submarine production, as well as its arrangements and main equipment through bibliographical researches. Soon after, an overview will be presented on flexible ducts, the types of flexible ducts in the market, as well as part of its history. Then the flexible riser of unbonded type will be presented in more detail, describing its layers and the function of each one of them.