FEASIBILITY OF RELIEVING PLUG IN NEAR WELL-BORE ZONE OF CONDENSATED GAS WELL USING ELECTROMAGNETIC INDUCTION HEATING TECHNOLOGY
电磁感应加热技术解除凝析气井近井堵塞的可行性研究

As a new kind formation disposal technology of near well-bore zone of condensated gas well, the plugging relieved mechanism of down-hole electromagnetic induction heating mainly makes use of the increase of formation temperature of near well-bore zone to relieve the effect of well-bore liquid accumulation on productivity. According to the percolation law and exploitation characteristics of condensate gas reservoir, on the basis of percolation motion equation of oil, gas and water, energy conservation and matter conservation, the mathematical model of electromagnetic heating of condensate reservoir is established. At the same time, numerical simulation study which uses the real example of gas reservoir is carried out, and the changing law of the pressure of near well-bore zone, condensate oil saturation and relative permeability of gas phase of gas reservoir under the condition of electromagnetic heating production are calculated. At last, its results analysis prove that the plugging of near well-bore zone of gas well can be effectively relieved if electromagnetic induction heating technology is applied, and the ultimate recovery factor of oil and gas of gas well can be increased.