The comprehensive comparison of various logging information.
|Logging information ||Low angle fracture ||High angle fracture |
|Full waveform logging ||Longitudinal and transverse wave energy attenuation and shear wave attenuation are greater ||Longitudinal wave energy has an obvious attenuation and subsequent wave interference |
|Acoustic variable density log ||Longitudinal and transverse wave grey scale stripe becomes shallow, appearing as herringbone interference stripe ||Interference fringes appear in the longitudinal and transverse wave|
|Dual laterolog ||Appears as low resistivity and negative difference in the range of 10 to two thousand ||Resistivity appears as positive anomalies about below the surrounding rock and it is around hundreds of ohm meters |
|Acoustic logging ||Appears as high sonic differential time and cyclical jumping phenomenon ||Not shown obviously|
|Dual laterolog ||Not shown obviously||Sometimes it appears as rough borehole|
|Lithodensity log || peak anomaly and increase if there is barite mud || increase is not obvious with mud barite presence |