对高粘度的稠油,需耍用热采方法,即将蒸汽发生器产生的蒸汽,通过油井注入油层,加热油层,降低原油粘度,增加其流动性。在向油井注蒸汽时,蒸汽容易进入大孔隙的高渗透层,而中低渗透层不吸汽或很少吸汽。吸汽好的高渗透层进入高温蒸汽后,原油粘度大幅度降低,就容易被采出。而不吸气层中的原油粘度仍然很高,不易被采出。随着吞吐周期的增加,吸汽好的 For high viscosity heavy oil, thermal recovery method is needed. Steam generated by the steam generator is injected into the oil layer through the oil well to heat the oil layer to reduce the viscosity of crude oil and increase its fluidity. When steam is injected into the well, it is easy for the steam to enter the high-permeability zone of the macropore, while the low-medium permeability zone does not or can not breathe. Good high permeability steam into the high-temperature steam, the crude oil viscosity significantly reduced, it is easy to be produced. The viscosity of crude oil in the non-getter layer is still high, so it is not easy to be taken out. As the throughput cycle increases, the steam is good