论文部分内容阅读
进入特高含水期后,开展注采系统调整挖潜剩余油是油田持续稳产的关键.为了提高特高含水阶段油田采收率,提出井震结合方法精细标定构造层位、认识储层特征,构建地质模型并数值模拟剩余油分布,针对剩余油应用井震结合解释成果设计注采系统调整方案并优化相应注水强度.实验区块研究结果表明:特高含水期,采用井震结合注采系统调整方法最终产油量和采收率分别提高31.21×10~4t和1.54%,能够达到有效挖潜剩余油的目的;而改变注水强度对最终开发效果影响显著,随着注水强度增加,采收率先增大后减小,存在最佳的注水强度为9m~3/d·m.
After entering the period of ultra-high water cut, it is the key to continue the stable production of the oil field by adjusting the potential of injection-production system to tap the remaining oil.In order to improve the oil recovery in the ultra-high water-cut stage, a combination of well and seismic methods is proposed to finely calibrate the structural horizon, recognize the reservoir characteristics, Geological model and numerical simulation of the remaining oil distribution, the residual oil application well-seismic interpretation of the results of design and design of injection-production system and optimize the corresponding water injection strength.The experimental block results show that: ultra-high water cut, The final oil recovery and oil recovery increased by 31.21 × 10 ~ 4t and 1.54%, respectively, which could achieve the purpose of effectively tapping the residual oil. However, the change of water injection intensity had a significant impact on the final development effect. With the increase of water injection intensity, After the big reduction, there is the best water injection strength of 9m ~ 3 / d · m.