Productivity Evaluation of Daniudi Tight Sandstone Gas Field of Ordos Basin

With further exploration and exploitation of the hydrocarbon resource,the study of the tight sandstone gas reservoir is extremely important. Productivity evaluation has become difficulties,which can be hardly completed by only utilizing well log. The technique that reconstructing productivity evaluation parameters of the gas reservoir based on Gamma- ray logging,resistivity logging,acoustic logging and compensated neutron logging is presented, along with three kinds of gas layers and establishes productivity evaluation model by employing open- flow capacity and reconstruction parameters. The model checking has been made with satisfactory results.