EXPERIMENTAL RESEARCH ON THE CORROSION RESISTANCE CHARACTERISTICS OF A606 MATERIAL USED IN THE MANUFACTURE OF COILED TUBING

Gabriela Cristina IONESCU, Ion NAE, Octavian Narcis IONESCU, Răzvan George RIPEANU, Adrian HAGIANU

Abstract


Within the equipment of drilling rigs, coiled tubing (CT) is the main element that performs the manoeuvring of drilling tools to perform various operations in challenging conditions. The CT is subjected to complex stresses, which can manifest statically and dynamically, under the action of functional loads (forces, torques, pressure, temperature, etc.). To these tasks can be added the action of corrosive and embrittlement factors specific to the working environment. In this article are presented, the program of experimental tests aimed at establishing the chemical composition of the material, macro and micro structural analysis, tensile strength, flattening and the corrosion behaviour in different working environments (bore water, acidization solution, air etc.).The results of the conducted tests are a clear indicator that only through continuous monitoring the operational life of the coiled tubing could be established.


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