异常产出剖面资料解释方法研究

正常情况下,产出剖面曲线的变化指示流体的产出及性质.但当井筒中存在静水柱时,流体流经的有效截面会发生变化,从而造成曲线的异常.特别是当产出流体从静水柱中上升至非静水段时,流量曲线会出现明显的负异常.该负异常并非流体倒灌所致,而是由于流体流经的有效截面变化造成的.因此,资料解释的一大难点是消除静水柱的影响,分别对流体有效流通截面、滑脱速度和持水率进行校正.实际应用表明该方法能在一定程度上减小解释误差.

Data Interpretation of Abnormal Production Profile

Normally the fluid production and its properties are indicated by changing production profile curves But when there exists a static water column,the effective cross section of fluid flowing changes,thus abnormal curves occur Especially when produced fluid raises to nonstatic water section from static water column,obvious negative anomaly of the flowrate curves occurs,which is not caused by the backward flowing,but is caused by changing the effective cross section of the fluid flowing Therefor,the difficult problem of the data interpretation is to eliminate the influence of static water column,calibrate the effective flowing cross section,slippage velocity and water holdup respectively The application demonstrates that the interpretation errors are reduced to certain degree by using the method