TY - JOUR
T1 - Petroleum solid adherence on tubing surface
AU - Cosultchi, A.
AU - Garciafigueroa, E.
AU - Garcióa-Boórquez, A.
AU - Reguera, E.
AU - Yee-Madeira, H.
AU - Lara, V. H.
AU - Bosch, P.
PY - 2001
Y1 - 2001
N2 - Blocking of the crude oil flow is induced occasionally by the presence of a black layer of material adhered along the internal walls of petroleum wells. A piece of tubing with a significant amount of organic material, collected from a Mexican oil well, was analyzed by Mössbauer Spectroscopy (MS), X-ray Diffraction (XRD) and Fourier Transform Infrared Spectroscopy (FTIRS). At room temperature, a fraction of the adherence detaches easily off from the tubing surface, but part of it remains firmly adhered. Non-stoichiometric iron oxides (oxidized magnetite or maghemite) and iron sulfides (pyrrhotite) and also small amounts of iron hydroxides and organic material were found on the tubing surface with adhered-material. This suggests a competitive adsorption of sulfur atoms and hydroxyl groups from petroleum, on the surface iron sites. Finally, the organic material, which contains alkyl chains and aromatic rings, is adsorbed non-dissociatively on the modified surface but only in the presence of non-stoichiometric iron sulfide.
AB - Blocking of the crude oil flow is induced occasionally by the presence of a black layer of material adhered along the internal walls of petroleum wells. A piece of tubing with a significant amount of organic material, collected from a Mexican oil well, was analyzed by Mössbauer Spectroscopy (MS), X-ray Diffraction (XRD) and Fourier Transform Infrared Spectroscopy (FTIRS). At room temperature, a fraction of the adherence detaches easily off from the tubing surface, but part of it remains firmly adhered. Non-stoichiometric iron oxides (oxidized magnetite or maghemite) and iron sulfides (pyrrhotite) and also small amounts of iron hydroxides and organic material were found on the tubing surface with adhered-material. This suggests a competitive adsorption of sulfur atoms and hydroxyl groups from petroleum, on the surface iron sites. Finally, the organic material, which contains alkyl chains and aromatic rings, is adsorbed non-dissociatively on the modified surface but only in the presence of non-stoichiometric iron sulfide.
KW - Deposition
KW - Iron compounds
KW - Mössbauer spectroscopy
KW - Petroleum
UR - http://www.scopus.com/inward/record.url?scp=0035476066&partnerID=8YFLogxK
U2 - 10.1016/S0016-2361(01)00042-4
DO - 10.1016/S0016-2361(01)00042-4
M3 - Artículo
SN - 0016-2361
VL - 80
SP - 1963
EP - 1968
JO - Fuel
JF - Fuel
IS - 13
M1 - 1635
ER -