Application of the integrated technology of controlling-choking-flowing in Xiaowa oilfield

After the exploitation of high turn steam soak in Xiaowa oilfield,consisting of deep pools of extremely heavy oil,the fingering and overlapping passage have come into being.The physical properties of crude oil at the bottom become bad; the saturation of residual oil increases;the injection water retaining in reservoir rises;and the oil well contains high content of water.To enhance the oil-gas ratio and the effect of steam soak,individual technique such as profile controlling,sealing,cleanup and viscosity reduction is applied. However,as the extension of development,individual technique results in more and more bad effect.For this reason, an integrated technology of controlling-choking-flowing is manufactured and applied in 35 well times,obtaining a good effect of yield increase.