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Matrix logging system is widely used in coal-bed methane (CBM) reservoir. TFD is the extension of Matrix output file which is a structured format comprised a mix of ASCII and binary. WellCAD is the only logging software which can be used because of the confidentiality format, so that the processing and interpretation results of CBM reservoir are less effective. This paper decodes the TFD format and analyzes the storage pattern. Based on this, Java programming language is used to develop a format conversion program. The application can accurately convert the TFD format data to LAS (Log ASCII Standard), which can be loaded into the majority of well logging software platform. Result shows that the description of DAT structure and outcome of DAT file conversation are completely accurate. With the help of those powerful software, the efficiency of CBM well logging data processing and interpretation will be extremely improved. Keywords-TFD; LAS; Java; data structure; well logging

Decoding and Conversion of TFD Logging Data Format Based on Java