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在划分和评价孔洞性油气储集层参数时,声波测井是最有远景的方法之一。基于孔洞远比粒间孔隙对纵波旅行时(t_p)的影响小,及纵波衰减系数(a_p)有明显增高的特性,建立了划分孔洞大小的方法。这一方法已为钻孔研究和实验室岩芯测量结果所证实。现有的孔洞性岩石理论模型是根据处于均质弹性岩体中的不连通而充满流体的孔洞提出的。显然孔洞不连通的弹性体为非储集层,因此利用这种模型来论述弹性波在孔洞
Sonic logging is one of the most promising ways to characterize and evaluate pore-forming reservoir parameters. Based on the fact that the influence of the hole on the traveling wave travel time (t_p) is far smaller than that of the intergranular pore, and the attenuation coefficient (a_p) of the longitudinal wave is obviously increased, a method of dividing the hole size is established. This method has been confirmed by borehole studies and laboratory core measurements. The existing theoretical model of porous rock is based on the disconnected and fluid-filled pores in homogeneous elastic rocks. Obviously the holes are not connected to the elastic body is non-reservoir, so the use of this model to discuss the elastic wave in the hole