【摘要】 目前的电缆地层测试器的解释模型没有考虑管线存储效应对压力曲线的影响 ,因此 ,只能利用压降和压力恢复过程计算渗透率。考虑管线存储效应的模型能够描述压力测试的全过程 ,可以利用压力曲线的各个部分的测试数据反演地层渗透率 ,或用于实时的渗透率反演 ;可以采用非线性参数估计的方法反演地层的渗透率 ;采用部分数据对难以获得压力恢复数据的低渗透率地层进行的渗透率计算 ,大大提高了渗透率的计算精度。更多还原

【Abstract】 At present the wireline formation tester (WFT) interpretation or math model often estimates permeability with pressure margin and pressure build-up without considering the effect of flow line storage on the pressure curves. A new model considering the effect allows to represent the whole process of pressure testing and calculate permeability with the early time data and middle time data. Nonlinear parameter estimation approach can also be used to converse the formation permeability. Part of pressures may be used to determine the permeability of low permeable formation from which it is hard to get pressure buildup data, therefore, improving the calculation precision of permeability.更多还原