Technical Policy for Horizontal Well Steam Soak of Viscous Oil Reseroirs in Small Fault Blocks

In Can 2X1 small fault-block viscous oil reservoir in Jidong Oilfield, reservoir is buried deeply, boundary and bottom water is active. Thus it is proposed that thermal recovery technique is used as a means of production in the block. The effects of natural energy development is correlated with that of steam soak by using numerical simulation, the rational reservoir production mode, production of horizontal well steam soak is determined. Based on the economic benefit of reservoir production, the influence of injection-production parameters of horizontal well steam soak on the production effect is studied, the rational working system for the horizontal well steam soak in the reservoir is optimized, and corresponding technical economic limit is put forward. The result of study shows that for the production in Block Can 2X1, the technique for horizontal well steam soak with high dryness fraction, high intension of steam injection, high steam injection rate and short shut-in period is used for a better economic benefit.