采用多种方法建立气井产率预测模型

SETTING UP PREDICTION MODEL OF GAS WELL PRODUCTION RATE BY VARIOUS METHODS

气井的产能是开发井网布署及合理配产的依据，受多种因素的影响。文中所介绍的陕甘宁盆地中部气田小层产能剖分研究，以１９口生产测井分层测试资料为基础，对影响气井小层产能的诸多因素进行了分析，同时使用常规计算法和一种新的现代计算技术—多项式自组织网络方法进行计算分析，分别建立了适用于中部气田各小层产率预测模型。通过对比证明，多项式自组织网络是一种非线性的模拟预测网络，具有计算方法先进，可操作性强，精度高的特点。

Gas well productivity,influenced by many factors,is the basis of development well network deployment and rational proration.Based on the production test data of 19 production wells,dissected research on the productivity of small payzone in the central gas fields of Shanganning Basin is introduced,and the various factors influencing the productivity of gas well small payzone are analysed.The prediction models suitable to each small payzone in the central gas field are respectively set up by conventional calculation method and multinomial auto-organization network method-a modern calculation technique.Through contrasting with the conventional method,it is proved that the multinomial auto-organization network method is a nonlinear analog prediction technique with the advantages of convenient calculation,easy operating,high precision and wide applied range.