Method for predicting transverse wave time difference by using logging data

The invention discloses a method for predicting the transverse wave time difference by using logging data, and belongs to the technical field of petroleum logging. According to the method, a transverse wave time difference curve is constructed by using longitudinal wave time difference and density in an oil layer and/or a water layer section, a natural gamma relative value is calculated out by using natural gamma logging, and then a relevant relationship between the natural gamma relative value and the transverse wave time difference is established. A formula for predicting the transverse wavetime difference is established by using conventional logging data, so that accurate acquisition of the transverse wave time difference in any stratum (including oil, gas and water layers) is realized, the transverse-to-longitudinal wave time difference ratio and the Poisson's ratio which reflect properties of a reservoir fluid and parameters such as the Young's modulus, the bulk modulus and the shear modulus which reflec