A New Recovery Calibration Method of Steam Stimulation in Shallow Heavy Oil Reservoirs in Kazakhstan

Aiming at the problem of steam stimulation recovery calculated by the traditional method specified by China Petroleum Institute is higher than actual value in Kenkiyak post-salt oil reservoir, based on the orthogonal simulation experiment and numerical simulation results, a new recovery calibration method of steam stimulation in shallow heavy oil reservoir in Kazakhstan is re-established by multiple regression method. The improved formula reduced the calculation error in this area from 5% to 2%, and the accuracy is greatly improved. The formula is suitable for the calibration of steam stimulation recovery of shallow ordinary heavy oil in Kazakhstan, which fills the gap of recovery calculation method of this kind of reservoir in Kazakhstan, and has been applied in Kenkiyak post-salt oil reservoir. The result of the method application were finally authorized by Kazakhstan Reserves Committee.