用不稳定试井资料确定气井产能的新方法  

NEW METHOD FOR DETERMINING THE FLOW POTENTIAL OF GAS WELL BY DESTABILIZATION WELL TESTING DATA

作　　者：唐洪俊[1] 王大兴[1] 石永新[1] 

机构地区：[1]重庆科技学院石油工程系

出　　处：《钻采工艺》2005年第4期64-65,73,共3页Drilling & Production Technology

摘　　要：目前确定油、气井产能的主要方法是稳定试井方法,若能用不稳定试井资料确定气井产能,则极大地提高了确定气井产能的工作效率和经济效益。因此研究用不稳定试井资料确定气井产能的方法具有重要的实际意义。根据气井井底流动方程和气井产能试井对测试井井底压降率精度的要求,推导出了计算稳定时间的基本公式,由此便可计算出相应的井底稳定流动压力,进而建立气井的产能方程和确定气井产能,并通过实例分析证明了该法的正确性和可靠性。The main method for determining the flow potential in oil and gas well is the stabilizing well - testing method, as if using the method of destabilization well testing data, the work efficiency and economic benefit must have been improved greatly. So it is value to research on the method for determining the flow potential of gas well by destabilization well testing data. This paper deducts the essence formula of calculating the stabilization time, based on the downhole flow equation and requirement of differential pressure accuracy of downhole by flow potential well -testing of gas well. Thus it can calculate the commensurable stabilizing flow pressure of downhole, and then it can establish the flow potential equation and determine the flow potential of gas well. This paper demonstrates the exactitude and dependability of the method by example analysis.

关 键 词：气井 产能 不稳定试井 产能试井 稳定时间 压降率 

分 类 号：TE373[石油与天然气工程—油气田开发工程]