一种新型爆燃压裂数值模拟等效表征方法

爆燃压裂技术是一项成本低、适用性广的气体压裂技术,在陆地和海上油气田应用广泛,增产效果明显.虽然已有大量对爆燃压裂效果预测方法的研究,但都是将解析方法与数值模拟方法分别独立应用.存在解析预测方法不能准确表征地层非均质性,而数值模拟方法又难以表征近井解堵增产效果的缺陷,导致预测结果与实际情况存在一定差距.本次运用解析模型...

A novel equivalent characterization method for numerical simulation of deflagration fracturing

The deflagration fracturing technology is a low-cost and widely applicable gas fracturing technology,which is widely used in land and offshore oil and gas fields and has obvious effects.Although there have been a lot of researches on deflagration fracturing effect prediction methods,they all apply analytical methods and numerical simulation methods independently.The analytical prediction method cannot accurately characterize the heterogeneity of the formation,and the numerical simulation method is difficult to characterize the effect of near-well plugging removal and stimulation,resulting in a certain gap between the prediction result and the actual situation.The analytical model is used to calculate the degree of improvement of the skin coefficient by deflagration fracturing,and the effect prediction is carried out through the reservoir numerical simulation method.The analytical method and the numerical simulation method are combined to obtain the numerical simulation equivalent characterization method.Comparing the predicted output with the actual output after the measures,the coincidence rate is relatively high.This method has certain guiding significance for the evaluation of the effect of deflagration fracturing.