水力裂缝层内爆燃压裂油井产能模型电模拟实验评价

Evaluation of productivity model for hydraulic fracturing wells with exploding in fracture front by electricity similarity experiment

根据相似原理，建立了水力裂缝层内爆燃压裂油井流体渗流场分析的电模拟实验装置，并利用该装置测定和分析了不同水力裂缝和爆燃裂缝参数条件下的等压线和电流比，用电流比表征油井增产效果，与水力裂缝层内爆燃压裂油井产能模型的计算结果进行了对比。研究结果表明，水力裂缝和爆燃裂缝的存在，改善了流体在地层中的渗流状况，有利于油井产能的提高；实验模型产能测试结果与计算模型预测结果之间相对偏差为0．21％～7．72％，平均相对偏差为4．06％，证明电模拟实验具有较高精度。

Based on the similar principle, the experimental equipment was built to analyze the percolation field of hydraulic fracturing wells with exploding in fracture front. The constant voltage line and current ratio were measured and analyzed under different parameters of hydraulic and exploding fractures. The effect of oil well stimulation was characterized by current ratio, and the results of the experiment were compared with that of calculation model. The results Show that the existence of hydraulic and exploding fractures can improve the percolation conditions of the reservoir and increase the productivity of wells. The relative deviation of the experimental testing results to the prediction results of calculation model is between 0.21 percent and 7.72 percent, and the average value is 4.06 percent. Accordingly, the precision of the experiment is proved.