Abstract: In this paper, super heavy crude reservoir of Liaohe Oil Field in Shu 1 area is taken as an example. Using the steam huff and puff temperature field, saturation field result and the in situ monitoring data of high temperature steam intake and liquid producing profiles, well temperature profile, the primary factors that the super heavy crude single well convention steam huff and puff high cycle decreases progressively are analyzed. Research shows the low producing degree of super heavy crude reservoir and the oil well decreases the fluid providing ability lead to the single well convention steam huff and puff high cycle decreasing progressively. Based on the above decreasing factors, strengthening mechanism, increased indoor and field experiment, a simultaneous multi well cyclic steam huff and puff, intermittent steam huff and puff, high temperature profile control to adopt a multiinjection technology and other productivity measures are suggested. With the application of stability technical countermeasures in field, which effectively lightens the high cycle steam huff and puff of super heavy crude production decline, decreasing cycle dropped to 3.25% from 8.31%, higher than the same period production of conventional steam huff and puff 200 tons single well, about 0.03 higher in oil gas ratio.

Key words: super heavy crude, steam huff and puff, remaining oil, decrease, Liaohe Oilfield