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法林，牟轩沁等．数控工程质量测井仪的设计特点及应用．测井技术，１９９７，２１（３）：１８５～１９２根据声波振动迭加原理、双发双收声幅补偿原理、等效声衰减系数概念和续至波能量积分处理方法研制出一种新的ＧＪＺ－Ａ型数控工程质量测井系统。该系统由声波、磁定位和自然伽马下井仪、深度系统、地面预处理电路、数据采集控制接口电路、４８６微机和热敏绘图仪等构成。实验测量和野外使用表明：用等效声衰减系数和续至波能量积分等参数能更精确地评价套管井一次界面和二次界面的水泥胶结质量。
Farin, Mou Xuan Qin and so on. Design Features and Application of NC Engineering Quality Logging Tool. Logging Technology, 1997,21 (3): 185 ~ 192 According to the principle of superposition of acoustic vibration, the principle of double-horn double-amplitude compensation, the concept of equivalent sound attenuation coefficient and the method of continuation wave energy integration, a new GJZ-A CNC engineering quality logging system. The system consists of acoustic wave, magnetic localization and gamma ray downhole system, depth system, ground pretreatment circuit, data acquisition and control interface circuit, 486 microcomputer and thermal plotter. Experimental and field experiments show that the cement bonding quality of the primary and secondary interfaces of the cased hole can be evaluated more accurately by using parameters such as equivalent acoustic attenuation coefficient and continuation wave energy integral.