Research On Logging Evaluation Of Low-Resistivity Reservoirs In Jiyang Depression

Low-resistivity reservoirs are reservoirs whose resistivity is similar to water pays,which brings great trouble to fluid identification.Although more and more low-resistivity reservoirs have been discovered in Jiyang Depression , lack of geologic laws and colligated evaluation technique of low-resistivity reservoirs leads to the passiveness of exploration and evaluation.And so studying the geologic genesis, micro-chemical causes, identification and quantitative evaluation is necessary.With the different kinds of datas from Jiyang Depression, Several innovations have been made:1)Study the relationship between geologic genesis and micro-chemical causes ;2)Put forward the new method of using curve shape to identify production pays quantitatively and qualitively;3)Succeeded in identifying the moon-like low-resistivity pays using scale-wavelet energy spectrum method;4)Come up with the identification process and evaluation process.Study the different models of evaluating saturation,and put forward the evaluation process.