Investigation of microwave radiation in conjugate with acidizing as a novel hybrid method of oil well stimulation

Document Type : Article


Department of Petroleum Engineering, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, Iran


In this research, the effect of microwave radiation simultaneous with acidizing on the carbonate rock surface has been investigated. Saturated rock sections were first immersed in the acid solution, and then, exposed to the microwave at 1300 W and 780 W for 1, 2, and 3 min. The surface wettability and hydrocarbon desorption from the rock surface were respectively investigated by the contact angle measurement and Attenuated Total Reflectance-Fourier Transform Infra-Red (ATR-FTIR) spectroscopy. It was observed that the angle between the rock drop and the oil under the microwave in the vicinity of the acidic solution first decreases and then increases. The reduction of the contact angle in the combined mode is tenser due to the simultaneous effect of acid and wave radiation. According to the ATR-FTIR spectrums, the microwave radiation of the sections during the acid treatment led to desorption of aromatic compounds, longer alkanes, polar bonds (O-H and N-H), and C=O Based groups. The hydrocarbons with higher polarity have more affinity for desorption from rock surfaces during microwave radiation. Hence, microwave radiation could improve wettability alteration and asphaltene desorption during oil well acidizing.


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