涩北气田产能试井二项式方程曲线倒转校正方法

Inverted Correction Method with Productivity Test Binomial Equation Curve in Sebei Gas Field

利用二项式方程进行无阻流量计算,对气井进行合理配产已在气田开发中得到广泛应用。涩北气田由于部分测试井地层出水、出砂,产能试井二项式曲线出现"倒转"现象。依据校正前生产井的试井指示曲线截距的正负值,对流压或静压进行相应校正,校正后的二项式层流系数和紊流系数校正后均为正值,产能试井二项式曲线形态正常,解释结论更加客观、真实,并在实践中取得了良好的应用。

Non resistance flow rate is calculated using the binomial equation of gas well,then carrying on the reasonable matching production has been widely used in gas field development. Sebei gas field as part of the test well formation water,sand,deliverability testing binomial curve appears 'upside down' phenomenon. On the basis of the positive and negative correction of well testing curve indicating the former wells intercept value,convection pressure or static pressure corresponding correction,correction after correction of laminar and turbulent coefficient of binomial coefficients were positive,deliverability testing binomial curve of normal morphology,explain the conclusion to be more objective,true,and have achieved good application in practice.