Abstract: The heavy oil reservoir of District Baizhong-7 W ell in Baikouquan oilfield is in the second cycle of development by steam stimulation process with 3 148x10⁴t of OOIP. However, the response from steam stimulation in a single well has shown unsatisfactory efficiencies such as faster decline of production, quick decrease of in-situ oil temperature, short duration of cyclic production with low recovery rate, serious steam breakthrough, sand inflow and casing damage of producer, low cyclic water recovery rate, and early steam/oil ratio of lower than 0.2. Based on comprehensive analysis of the basic features of unconsolidated sandstone reservoirs in Badaowan formation and Upper Karamay formation, this paper systematically addresses the mechanism and afected factors for sand inflow by heavy oil cold flow production process, and compares with reservoir conditions of studied area. The results show that for this heavy oil reservoir in District Baizhong-7 Well, cold flow production with sand inflow will be carried out, which is of relatively great potentials, and current development stage will be a favorable opportunity for implementation of the cold flow production with sand inflow.

Key words: Baikouquan oilfield, heavy oil, sand production, cold flow production, steam drive