【摘要】 利用多极子阵列声波测井资料提取直达斯通利波、计算斯通利波中心频率偏移和时间延迟来进行地层渗透率反演的方法已被研究了多年。但成功的现场应用实例仍然很有限。介绍了开发的多极子阵列声波资料处理软件和利用斯通利波进行有效的储层渗透性和裂缝评价方法,为获得直达斯通利波,对全波列进行了斯通利波的提取、上、下行波的分离及直达波与反射波的分离的波场分离。为消除经过波场分离后与渗透率无关的信息的影响,利用合成斯通利波波形的方法来模拟由于井眼变化和地层弹性特性对波形产生的影响。现场应用表明渗透率计算结果与国外大型工作站软件(eXpress)计算结果相比基本一致。更多还原

【Abstract】 The theories for evaluating formation permeability and fracture parameters from Stoneley wave information have been developed for more than 10 years.However there are still many difficulties to calculate formation permeability in practice.In this paper,developed are a method and correspondent software for calculating formation permeability from the center frequency shift and travel time delay in direct Stoneley wave.In order to acquire direct Stoneley wave,we picked up Stonely wave,separated up and down wave,separated straight and reflected wave in full wave.After the full wave was separated, in order to remove influence information that has no relation with permeability,we use composed Stoneley wave to simulate influence of downhole changes and formation elasticity on wave shapes.We present a field example of using our software to Tahe oilfield.The comparison of our results with the results from commercial workstation software(eXpress) shows general agreement.更多还原