DEPOSITION OF PETROLEUM HEAVY ORGANIC COMPOUNDS ON A LOW CARBON STEEL TUBING

A. Cosultchi (), E. Garcíafigueroa, A. Muñoz-Flores, A. García-Bórquez, B. Zeifert, V. H. Lara and P. Bosch
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A. Cosultchi: Instituto Mexicano del Petroleo, Eje Central "L. Cárdenas," No. 152, Mexico DF, 07730, Mexico
E. Garcíafigueroa: Instituto Mexicano del Petroleo, Eje Central "L. Cárdenas," No. 152, Mexico DF, 07730, Mexico
A. Muñoz-Flores: Departamento de Ciencia de Materiales, ESFM-IPN, Mexico DF, 07300, Mexico
A. García-Bórquez: Departamento de Ciencia de Materiales, ESFM-IPN, Mexico DF, 07300, Mexico
B. Zeifert: Departamento de Metalurgia, ESIQIE-IPN, Mexico DF, 07300, Mexico
V. H. Lara: Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa, Mexico DF, 09340, Mexico
P. Bosch: Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa, Mexico DF, 09340, Mexico

Surface Review and Letters (SRL), 1999, vol. 06, issue 06, 1299-1306

Abstract: Reduction of petroleum wells production is often observed and related to the presence of solid deposits adhered on the internal wall of the tubing. A piece of tubing with organic material adhered on its surface was recovered from a Mexican southeastern region well. Its composition and morphology was studied applying scanning electron microscopy with X-ray energy dispersion spectroscopy (SEM-EDXS), X-ray diffraction (XRD) and reflection Fourier Transform Infrared Spectroscopy (FT-IRS). High-condensed hydrocarbons with hydroxyl and carboxyl functional groups and 6.4 wt% total sulfur were found. The adhered-material morphology suggests vitreous solid structure usually identified in polycyclic aromatic compounds. Iron (II, III) oxides and nonstoichiometric sulfides are present; the last, as a corrosion product obtained in petroleum with lowH2Sconcentration. Pyrrhotite (Fe1-xS), which exhibits a nonstoichiometric structure, was reported as the active phase of iron oxide catalysts in hydrogen interchange processes.

Date: 1999
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DOI: 10.1142/S0218625X99001463

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