CAJ | 학술논문

为认清层间非均质性油藏注水开发动态波及过程，依据中原油田的非均质特征，制作了层间非均质大型平面物理模型。通过室内三维物理模拟驱油实验，量化研究了正韵律高含水油藏地质模型不同注入体积及不同驱替压差下含油饱和度与波及系数的变化特征。结果表明，层间非均质模型三层的动用程度存在明显的差异；动用程度与储层渗透率正相关。当注入体积从0．10 HCPV提高到1．15 HCPV时，高渗层波及效率从36．73％变化到100％，中渗层从24．49％增大到76．60％，而低渗层仅从14．24％变化到44．90％。驱替压差提高时，对低渗层的采出程度提高幅度远大于高渗层。通过后期分层调整措施，可以提高中、低渗层的采出程度，层间调整是层间非均质油藏改善开发效果的有效措施。
위인청층간비균질성유장주수개발동태파급과정，의거중원유전적비균질특정，제작료층간비균질대형평면물리모형。통과실내삼유물리모의구유실험，양화연구료정운률고함수유장지질모형불동주입체적급불동구체압차하함유포화도여파급계수적변화특정。결과표명，층간비균질모형삼층적동용정도존재명현적차이；동용정도여저층삼투솔정상관。당주입체적종0．10 HCPV제고도1．15 HCPV시，고삼층파급효솔종36．73％변화도100％，중삼층종24．49％증대도76．60％，이저삼층부종14．24％변화도44．90％。구체압차제고시，대저삼층적채출정도제고폭도원대우고삼층。통과후기분층조정조시，가이제고중、저삼층적채출정도，층간조정시층간비균질유장개선개발효과적유효조시。
In order to recognize the dynamic sweep process of heterogeneous reservoir in water injection develop-ment, a large-scale, two-dimensional heterogeneous physical model was made for the first time on the basis of Zhongyuan Oil Field. Through the three-dimensional physical simulation experiment in laboratory, the quantita-tive research on the variation characteristics of oil saturation and sweep efficiency of the geological model of posi-tive rhythm and high water-cut reservoir under different injection volume and displacement pressure was made. The results showed that there were obvious differences among the three layers’ producing degree of the heteroge-neity model and there was a positive correlation between producing degree and reservoir permeability. When the injection volume was raised from 0. 10 HCPV to 1. 15 HCPV, the sweep efficiency increased from 36. 73% to 100% in high permeability layer, from 24. 49% to 76. 60% in middle permeability layer, and from 14. 24% to 44.90% in low permeability layer. When the displacement pressure difference was raised, the recovery percentage of low permeability layer was significantly higher than that of high permeability. Through hierarchical ordering measures, the recovery percentage of middle permeability layer and low permeability layer can be increased, and the interlayer adjustment is an effective measure for improving the development result of heterogeneous reservoir.