双重非均质模型凝胶调驱动态特征物理模拟实验研究

针对非均质油藏,制作了带含油饱和度监测能力和测压孔的人造环氧树脂胶结平面、纵向双重非均质模型,并在其上开展了凝胶调驱物理模拟实验。对整个调驱过程中的采收率、含水率、压力、含油饱和度动态变化特征进行了分析,实验结果表明:调驱剂在后续水驱阶段仍然能够增加注入压力、降低含水率;非均质程度较大的油藏,剩余油从纵向上看主要分布在中低渗透层,从平面上看主要分布在远离注入井和主流线的两翼部位,但整个驱替过程之后仍有10%以上的残余油,可以采用提高洗油效率驱油方法继续提高采收率。

The Experimental Study of Gel and Profile Control on Plane Heterogeneous Model

For a heterogeneous reservoir,production the oil saturation monitoring capacity and pressure taps artificial epoxy cements plane heterogeneous model,and carried out on the physical simulation Gel and profile control.Oil recovery the entire tune flooding process,the moisture content,pressure,oil saturation dynamic variation characteristics analysis and experimental results show that：For serious degree of heterogeneity of the reservoir,the gel profile control and flooding can significantly increase the harvest rate and reduce the moisture content,increasing the injection pressure;drive control agent in the water flooding stage will still be able to increase the injection pressure to reduce the moisture content;larger degree of heterogeneity of the reservoir,the remaining oil from the vertical point of view is mainly distributed in the low permeability layer,from a plan view mainly distributed in away from the injection well and the two wings of the main line portion,but after flooding the entire process is still more than 10%of the residual oil can be used to improve washing efficiency of oil flooding method continues at EOR.