Abstract
An analytical model for heated liquid injection into an oil well has been developed. The model couples heat convection and conduction in the well annulus with transient radial heat conduction in the surrounding formations to calculate injected fluid temperature as a function of time and depth. The model is verified by comparison of simulated temperature profiles with field case studies of hot oil injection for paraffin removal. A method is provided for calculation of the maximum depth at which annular injection of heated liquid can be used for paraffin removal.
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