| The LWD technology,widely used in complex litholoy and unconventional oil and gas reservoirs,has unique advantages in real-time measurement and geological guidance.As one important measuring mean of LWD,Electromagnetic wave propagation logging has aroused great attention.The studying to the forward modeling method and influence factors is based on the theory of electromagnetic wave propagation resistivity logging.Firstly,combining the basic theory of electromagnetic propagation resistivity logging,the response characteristics of resistivity logging are studied in infinite homogeneous formation.Secondly,the mode wave decomposition method is used to solve the electromagnetic field component at any point in the horizontal layered formation and the Fast-Hankel Transform(FHT)is used to calculate the electromagnetic field integral equation in this solving program.Then,using the FORTRAN code to realize forward modeling course,and complete the analysis on the environmental impact factors of the response of the electromagnetic wave propagation resistivity logging.Finally,making the environmental factors correction plot and realizing the three-parameter inversion in 1-D formation.The research provide theoretical guidance for the development of the logging tool and the interpretation of the data processing. |
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