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经济采收率是经济可采储量与探明地质储量之比，反映了地质储量中有利润价值的储量部分，它随着经济参数的变化而变化。文章在总结新场气田蓬－气藏地质模型和动态特征的基础上，利用翁氏模型预测法、对数正态模型法对气藏进行可采储量计算和产量预测，在对比两种数学模型预测结果后，选择对数正态模型预测的产量值，利用现行的经济参数，采用净现值法对气藏的经济采收率进行计算，为储量的资产化和气藏经营提供了可靠依据。

Economic Recovery Factor Research on J3p1 Gas Reservoir in Xinchang Field

Economic recovery factor is economic re coverable reserves to proved geological reserves ratio,which is only represent ive of the profitable portion in geological reserves and changes with the the ch ange in economic parameters.In the paper,on the basis of summarizing the geologi cal model and dynamic characteristics of the J 3 p 1 gas reservoir in Xi nchang field,the recoverable reserve estimation and production prediction of the reservoir are carried out by applying Onsager model and lognormality model;then the economic recovery factor of the reservoir may be calculated by use of net p resent value method through applying current economic parameters and the product ion value forecasted by the lognormality model selected after contrasting the re sults predicted by the two mathematic models,thus providing reliable basis for t urning reserves into assets and for gas reservoir management.