摘要
在异常高压气藏中,气井非达西流动方程通常用三项式压力平方公式pe2-pwf2=Aqg+Bqg2+Cqg3来表示,但在运用该方程来整理实际回压力试井资料时,求取方程式中系数A、B、C值时显得较为复杂和困难,需要应用相应的专业软件。根据现场回压力试井情况,提出了用试差法求取系数A、B、C值,用交会法计算气井无阻流量的方法,使三项式压力平方公式求解简易和准确。该方法在四川盆地西35-1异常高压气井试井资料整理中得到了有效的应用,所获得的气井三项式产能方程通过生产实践检验具有较高的精度。
For abnormally high-pressure gas reservoirs,a non-Darcy flowing equation of gas well is expressed as pe2-pwf2=Aqg+Bqg2+Cqg3,whose A,B and C are hard to be calculated from the back-pressure testing data and so relevant professional software is necessary.Considering the field practice of the back-pressure testing,it was presented to calculate A,B and C by trail-and-error method,and calculate the open flow potential of gas well by intersection method.The application of such method in data process of the abnormally high-pressure gas well Xi35-1 in the Sichuan Basin was found to be effective,and the preciseness of the calculated trinomial deliverability equation has been proved by the real production data.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2007年第4期88-89,共2页
Natural Gas Industry
关键词
气藏
异常压力
渗流
生产能力
评价
方法
gas reservoir,abnormally high-pressure,fluid flow,deliverability,analysis,method
