X区块化学驱改善开发效果物理模拟实验研究

Experimental study on physical simulation of improving development effect of chemical flooding in block X

本研究旨在探讨X区块化学驱技术在改善油田开发效果中的应用及其效率。通过采用物理模拟实验的方法,本文分析了不同化学驱油剂的注入对油藏渗透率以及采收率的影响。实验选取了不同类型的化学驱油剂,并在模拟油藏中模拟了它们的注入过程。通过对比实验前后的油藏性能数据,评估了化学驱技术对提高原油采收率的贡献,实验结果显示,化学驱技术能够有效提高油水界面张力,扩大波及体积,降低残余油饱和度,从而显著提升采收率。此外,本研究还考察了化学驱油剂的最优组合和注入参数,以期找到最有效的化学驱提高采收率的策略,物理模型驱油效率实验结果表明,在岩心渗透率为500×10^(-3)μm^(2),水驱至含水率98%+0.3 PV聚合物(2500万1000 mg/L聚合物,μ=100 mPa·s)+后续水驱体系中,最终采收率达到了62.41%。本研究为X区块化学驱技术的应用提供了重要的理论依据和实验数据支持。

This study aims to explore the application and efficiency of chemical flooding technology in improving oilfield development outcomes in block X.By employing physical simulation experiments,this paper analyzes the effects of injecting different chemical flooding agents on the permeability and recovery rate of the reservoir.Various types of chemical flooding agents were selected for the experiments,and their injection processes were simulated in a model reservoir.By comparing the reservoir performance data before and after the experiments,the contribution of chemical flooding technology to enhancing crude oil recovery efficiency was evaluated.The results indicate that chemical flooding technology can effectively increase the tension at the oil-water interface,expand the swept volume,and reduce residual oil saturation,thereby significantly enhancing recovery rates.Furthermore,this study investigated the optimal combination and injection parameters of chemical flooding agents to identify the most effective strategy for improving recovery rates using chemical flooding.The physical model flooding efficiency experiments showed that,in a rock core with a permeability of 500×10^(-3)μm^(2),after being waterflooded until the water cut reached 98%,followed by polymer flooding with 0.3 PV of a 25 million 1000 mg/L polymer solution(with a viscosity of 100 mPa·s),and subsequently continuing with waterflooding,the ultimate oil recovery achieved 62.41%.This research provides important theoretical basis and experimental data support for the application of chemical flooding technology in block X.