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该文提出了基于高斯牛顿反演法的试井曲线自动拟合算法,通过对缝洞型油藏三重介质数值试井模型的理论试井曲线进行拟合,证明了该数值试井解释的正确性和实用价值。指出选择合适的初始模型和扰动量,并根据曲线形态和敏感性分析结果确定反演参数在此反演方法中的重要作用,用提出的方法对塔河油田的两口实测井进行了试井解释,获到较高的曲线拟合度和合理的参数解释结果。
In this paper, an automatic fitting algorithm of well testing curve based on Gauss Newton inversion method is proposed. By fitting the theoretical well testing curve of the triple-well numerical well test model of fractured-cavity reservoir, it is proved that the numerical well test interpretation is correct Sexual and practical value. It is pointed out that an appropriate initial model and perturbation quantity are selected, and the important role of inversion parameters in this inversion method is determined according to the curve shape and the sensitivity analysis result. Two well logs in Tahe Oilfield are tested by the proposed method Interpretation, get higher curve fitting degree and reasonable parameter explanation result.