Asphaltene Flocculation Inhibition with Ultrasonic Wave Radiation: A Detailed Experimental Study of the Governing Mechanisms

Iman Najafi, Mahmood Amani

Abstract


The concept of ultrasonic wave assisted asphaltene flocculation/deposition inhibition was earlier introduced by Najafi et al., (2011). Current study is based on a series of experimental analyses, rheological changes, flocculation behavior, and total asphaltene content of two types of crude oils.The role of ultrasonic wave radiation on these parameters are investigated in order to elaborate the changes in the kinetics of asphaltene flocculation which leads to inhibition of asphaltene flocs formation. Based on the results obtained from the experiments, one can conclude that ultrasonic wave radiation can be most effective if the wave is radiated up to an optimum time. Around this time the oil has its local minimum value of kinematic viscosity, the least value of asphaltene content, and least potential for formation of macro-structured flocsdue to reduction of aromatic to saturate ratio.
More detailed studiesrevealed that during radiation timetwo main mechanisms are active in asphaltenic crude oil: asphaltene particles disintegration and formation of asphaltene particles. Based on asphaltene content analysis, the optimum radiation time can be defined as the time at which the two mechanisms have an equal rate. The optimum radiation times are observed to be in the same time range in different tests. According to the results obtained, ultrasonic wave technology can be a potential method of flocculation inhibition and can have extensive industrial application.
Key words: Ultrasonic; Asphaltene; Flocculation inhibition

Keywords


Ultrasonic; Asphaltene; Flocculation inhibition

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References


[1] Argillier, J. F., Coustet, C., & Hénaut, I., (2002). Heavy Oil Rheology as a Function of Asphaltene and Resin Content and Temperature. SPE/Petroleum Society of CIM/CHOA 79496, International Thermal Operations and Heavy oil Symposuim and International Horizontal Well Technology Conference.

[2] Sawarkar A. N., Aniruddha B. P., Shriniwas D. S. & Jyeshtharaj B. J. (2009). Use of Ultrasound in Petroleum Residue Upgradation. The Canadian Journal of Chemical Engineering, 87, 329-342.

[3] Champion, B., Van der Bas, F., & Nitters, G. (2004).The Application of High-Power Sound Waves for Wellbore Cleaning. The Hague, Netherlands: SPE 82197, SPE European Formation Damage Conference.

[4] Diallo, M. S., Cagin, T., Faulon, J. L., & Goddard W.A. (2000). Thermodynamic Properties of Asphaltenes: A Predictive Approach Based on Computer Assisted Structure Elucidation and Atomistic Simulations, Asphaltenes and Asphalts, 2. Developments in Petroleum Science, 40(B), 103-127.

[5] Dunn, K., & Yen, T. Y. (2001). A Plausible Reaction Pathway of Asphaltene under Ultrasound. Fuel Processing Technology, 73, 59–71.

[6] Gunel, G. O., & Islam, M. R. (2000). Alteration of Asphaltic Crude Rheology with Electromagnetic and Ultrasonic Irradiation. Journal of Petroleum Science and Engineering, 26, 263–272.

[7] Gollapudi, U. K., Bang, S. S., & Islam, M. R. (1994). Ultrasonic Treatment for Removal of Asphaltene Deposits during Petroleum Production. SPE 27377, SPE IntI. Symposium on Formation Damage Control, Lafayette, Louisiana, U.S.A.

[8] Kikuchi, T., & Uchida, T. (2011). Calorimetric Method for Measuring High Ultrasonic Power Using Water as a Heating Material. Journal of Physics: Conference Series, 279, 1-5. doi:10.1088/1742-6596/279/1/012012.

[9] Najafi, I., Mousavi, S. M. R., Ghazanfari M. H., Ramazani, A., Kharrat, R., Ghotbi, C., & Amani, M. (2011). Quantifying the Role of Ultrasonic Wave Radiation on Kinetics of Asphaltene Aggregation in a Toluene-Pentane Mixture. Petroleum Science and Technology, 29(9), 966-974.

[10] Shedid, A. S., & Attallah, S. R. (2004). Influences of Ultrasonic Radiation on Asphaltene Behavior With and Without Solvent Effects. SPE 86473, SPE International Symposium and Exhibition on Formation Damage Control, Lafayette, Louisiana, U.S.A.

[11] Suslick, K. S. (1989). The Chemical Effects of Ultrasound. Scientific American, 260(2), 80- 86.




DOI: http://dx.doi.org/10.3968%2Fj.aped.1925543820110202.108

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