Experimental study on physical simulation of improving development effect of chemical flooding in block X
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 flood-ing 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 simu-lated 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 recov-ery efficiency was evaluated.The results indicate that chemical flooding technology can ef-fectively increase the tension at the oil-water interface,expand the swept volume,and re-duce residual oil saturation,thereby significantly enhancing recovery rates.Furthermore,this study investigated the optimal combination and injection parameters of chemical flooding a-gents 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 500×10-3μm2,after being waterflooded until the water cut reached 98%,followed by polymer flooding with 0.3 PV of a 25 million 1 000 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 experi-mental data support for the application of chemical flooding technology in block X.
chemical floodingenhance oil recoverypolymer floodingsurfactant floodingphysical simulation
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