Abstract: Production Prediction is one of key problems for reservoir engineering research, and an easy, practical and reliable method for it becomes the seeking target. The Wang-Li's model for production forecast was proposed in paper A New Model for Forecasting Production of Oil and Gas Fields and successively introduced in his treatise. However, this study shows that it can not be established for errors in mathematic principle existed in this model, hence the given case study results are incredible. This paper presents some opinions for them for the purpose of correct development of such production forecast researches by further attentions and discussions.

Key words: model, oil-gas field, recoverable reserve, forecast, prediction, parameter