试验区块属于类稠油区块,原油粘度大,经过蒸汽吞吐后在油井与油井之间还留有大量的死油区,而蒸汽驱采油就是由注入井连续不断地往油层中注入高干度的蒸汽,蒸汽不断地加热油层,从而大大降低了地层原油的粘度。注入的蒸汽在地层中变为热的流体,将原油驱赶到生产井的周围,并被采到地面上来,它可以扩大波及体积,从而提高驱油效率,达到提高最终采收率目的。 The test block belongs to the heavy oil-like block. The viscosity of the crude oil is large. After the steam huff and puff, a large amount of dead oil is left between the oil well and the oil well, and the steam flooding is continuously injected into the oil layer by the injection well Degree of steam, steam constantly heating the reservoir, thus greatly reducing the formation of crude oil viscosity. The injected steam becomes a hot fluid in the formation. Crude oil is routed around the production well and collected on the ground. This expands the sweep volume and increases the flooding efficiency for the ultimate recovery.