Abstract: On the basis of the in-depth study on the mechanism of cold production in heavy oil and field data, this paper has analyzed the effects of key geologic factors on cold production. To expound the main applicable conditions of cold production and define relevant technical tactics of development. With the massive sand production and the formation of foamy oil, oil production of single well can achieve 3~50 t/d in average, ten to several hundred times of conventional production,recovery factor can reach 8%~15%,as much as that of steam stimulation. the reservoirs,which are suitable to cold production, are those whose formation are lose, gravel content is low, dead oil viscosity is about 500~ 100000 mPa·s, solution gas concentration in crude oil is about 10 m3/t, reservoir pressure is higher than 2 MPa, formation depth is about 200~ 1000 m. The effect of edge water, gas cap, cap rock thickness and intermediate layer distribution on cold production of heavy oil is great, which are important factors to deploy oil well and determine perforation interval and discharge capacity. This technique has extensive adaptability in such reservoirs as loose sandstone with solution gas.

Key words: viscous oil, sand production, analysis, foam, Canada, Henan oilfield