稳态条件下水平井产能敏感性分析

Sensitivity Analysis of Productivity of Horizontal Wells under Steady-State Conditions

在流动参数和储层形状相同的情况下,应用6种不同的裸眼水平井稳态方程,计算了水平井的产能,分析了水平井长度、储层厚度、流量、压降等变量对方程敏感性的影响。结果表明:水平段长度小于304.8m(1 000ft)时,所有稳态方程得到的水平井产能计算结果相似;水平段长度大于304.8m(1 000ft)时,计算结果出现明显差异且随着水平段长度的增大差异扩大。

In flow parameters and reservoir under the same shape,6different steady-state equations in openhole horizontal wells were used,horizontal well productivity was calculated and horizontal well length,thickness,and variables such as flow,pressure drop effect on equation of sensitivity were analyzed.Results indicate that length less than 304.8m(1 000ft),all steady-state equations of horizontal well productivity results are similar at horizontal length more than 304.8m(1 000ft),the result appears obvious differences and differences with increasing length.