【摘要】 利用偶极横波声波成像(Dipole Shear Sonic Imager,DSI)测井资料计算了纵、横波衰减和纵、横波品质因子QP和QS.对纵、横波在碳酸盐岩含气层和非含气层中的衰减特征研究表明,碳酸盐岩含气层中的纵波衰减比非含气层中的纵波衰减强;横波衰减和横波品质因子在碳酸盐岩含气层和非含气层中的变化不大。根据DSI测井资料计算出的纵、横波衰减和纵、横波品质因子在碳酸盐岩含气层和非含气层中的这些差异,给出了一种利用纵、横波品质因子比值QP/QS识别碳酸盐岩含气层的方法。更多还原

【Abstract】 Compressional(P)-and shear(S)-wave attenuation and quality factors(Qp and Qs) were calculated by using the dipole shear sonic imager(DSI) log data.The studies of the features of the P-S wave attenuation in the carbonate formation containing gas and non-containing gas show that P-wave attenuation in the carbonate formation containing gas is higher than non-containing gas.However,S-wave attenuation and quality factor do not show such a strong dependence.According to the features,this paper presents a method to distinguish the carbonate formation containing gas and non-containing gas by P-S wave quality factor ratio of Qp/Qs.更多还原