RELATIONSHIP BETWEEN RESERVOIR LOG PARAMETERS AND AOF IN DANIUDI GAS FIELD

This paper thoroughly analyzes the geological core data, ordinary logging data and well test outcome of Neopaleozoic tight reservoir in Daniudi gas field, especially makes systematic dissection on the log curve change law of main gas-bearing reservoirs from Lower Shihezi formation to Taiyuan formation such as He-3, He-2, He-1,Shan-1, and Tai-2. Based on the fine interpretation of reservoir parameters, through the repeated experimental study on on qualitative and quantitative evaluation method and fine processing analysis, this study provides the log productivity characteristic factor method and the log parameter optimize method. The former is based on log ratio method and builds up the synthetical computing method of the main gas reservoir series in Daniudi gas field with log characteristic productivity factor. The latter is based on the optimized method, which builds up the evaluation method of predicting reservoir gas AOF with log parameter composite relation. The successful application in the Daniudi gas field shows that the two methods are of originality with remarkable effect.