Study of the effect of resins on the aggregation process of asphaltenes

PETR 56

Jimmy Castillo, jimmy@ciens.ucv.ve1, Sócrates Acevedo, soaceved@strix.ciens.ucv.ve1, Jose Chirinos, jchiri@ciens.ucv.ve2, María A. Ranaudo, mranaudo@strix.Ciens.ucv.ve1, and Omar Ocanto1. (1) Escuela de Química, Universidad Central de Venezuela, Laboratorio de Espectroscopía Laser, Escuela de Química Facultad de Ciencias, 47102, Caracas, 1020a, Venezuela, (2) Centro de Química Analitica, Escuela de Química, Universidad Central de Venezuela, Escuela de Química Facultad de Ciencia, Caracas, 47102, Venezuela
The definition of asphaltenes is derived from the method used for the isolation from the crude oil. It is defined like the fraction insoluble in n-heptane. Studies on the precipitation or flocculation of asphaltenes from petroleum reservoir fluids are of great interest and has been devoted to understanding the chemical structure of asphaltenes and the mechanism causing asphaltenes to become unstable and precipitate out of crude oils. The understanding of these mechanism can help to find the way to prevent the asphaltene precipitation in production facilities. These resin molecules which are associated to the asphaltenes tends to stabilize the asphaltene micelles. As long as the asphaltenes are kept stable in the micelles, no precipitation occurs. In this work we study the effect of the resins concentration and aging of the solutions in the asphaltene solutions using a laser dispersion equipment. resins penetration in the asphaltene micelles is evidenced by experimental results
 

Division of Petroleum Chemistry Poster Session
8:30 AM-10:30 AM, Monday, 11 September 2006 Moscone Center -- Hall D, Poster

Division of Petroleum Chemistry

The 232nd ACS National Meeting, San Francisco, CA, September 10-14, 2006