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吉朋松，庄人遴，林谦，等．双晶Ｃ／Ｏ能谱测井．测井技术，１９９７，２１（２）：１３３～１３７单晶Ｃ／Ｏ测井仪由于受井径、井内流体、套管尺寸、水泥环等多种井眼条件的影响，使得测井的灵敏度和分辨能力大为降低，严重影响了单晶Ｃ／Ｏ能谱测井仪的推广使用。双晶Ｃ／Ｏ测井仪则利用长短源距两个探头所测谱数据进行补偿，有效地去除了井眼条件的影响，提高了测量精度和油水差值，更加有效地区分油、水层，并有望能在低孔隙度的地层中使用Ｃ／Ｏ测井仪器。
Ji Peng Song, Zhuang Lin, Lin Qian, and so on. Twinned C / O spectrum logging. Logging Technology, 1997,21 (2): 133 ~ 137 The single-crystal C / O logging tool is affected by many wellbore conditions such as well diameter, fluid in the well, casing size, And resolving ability is greatly reduced, seriously affecting the promotion of single crystal C / O spectrum logging tools. The twin-crystal C / O tool compensates for the measured data of two probes by the length and the distance source, effectively removing the influence of borehole conditions, improving the measurement precision and the difference between oil and water, and more effectively distinguishing the oil and water layers , And is expected to use C / O logging tools in low porosity formations.