Corrosion assessment of AISI SAE 4330 steel incontact with drilling mud

Hugo Armando Estupiñan Duran,
Dario Yesid Peña Ballesteros,
Vladimir Elles Macias

Hugo Armando Estupiñan Duran
PhD, universidad nacional de Colombia, calle 75 n° 79ª-51 facultad de Minas, sede Medellín, Colombia.

Dario Yesid Peña Ballesteros
PhD, universidad industrial de santander, carrera 27 calle 9 ciudad universitaria, Bucaramanga, Colombia.

Vladimir Elles Macias
ing., universidad industrial de santander, carrera 27 calle 9 ciudad universitaria, Bucaramanga, Colombia.

DOI: https://doi.org/10.18273/revfue.v13n2-2015002

Published 2015-12-03

Keywords

AISI sae 4330 steel,
Corrosion rate,
Drilling mud,
Electrochemical techniques,
Polarization resistance

How to Cite

Estupiñan Duran, H. A., Peña Ballesteros, D. Y., & Macias, V. E. (2015). Corrosion assessment of AISI SAE 4330 steel incontact with drilling mud. Fuentes, El reventón energético, 13(2), 15–21. https://doi.org/10.18273/revfue.v13n2-2015002

Abstract

Drilling fluids also known as drilling muds play a very important role in the oil and gas industry. Muds can be oil-based or water-based. Oil-based fluids have limited application due environmental problems. On the other hand, water-based muds are usually corrosive. Drilling muds have different functions such as the transport of drill cuttings to the surface, cooling, cleaning and lubrication of the drill bit and the drill collars as well as maintaining the stability of the well and the prevention of any escape of gas or oil. It is expected that the mud will not cause excessive wear or corrosion to the materials used in the drillstring. In this study the corrosion of the AISI 4330 steel in contact with a water-based drilling mud was evaluated using the electrochemical techniques Tafel extrapolation
and impedance spectroscopy. The corrosion tests were performed at temperatures of 30, 45 and 60 ° C and rotation rates of 1000, 2000, 3000 rpm using a rotating cylinder electrode (ECR).

Therefore, downhole and surface service conditions were simulated. It was found that the rotation rate is the most influential variable on the corrosion rate of the aisi 4330 steel. With increasing the rotation rate the corrosion current density increased and the polarization resistance decreased, consequently, the corrosion rate of the investigated steel increased

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