井筒与油藏耦合条件下的水平井非稳态产能预测(Ⅲ)———实例分析

利用段永刚、陈伟、黄诚等提出井筒与油藏耦合作用下的水平井非稳态产能预测模型进行计算,根据计算结果的对比验证了该模型的正确性。实例计算表明:油藏与井筒耦合的水平井非稳态产能预测模型,能够全面考虑水平井和油藏形态及参数影响;水平井的摩阻压降比加速度压降高出2~3个数量级,实际应用中可以忽略井筒流体加速度的影响;水平井存在一定的最优水平段长度范围,通过耦合模型计算能够快速的确定最优长度;所开发的耦合模型具有很好的扩展能力,为不同条件下水平井的油藏工程研究提供了一种通用模式。

TRANSIENT PERFORMANCE PREDICTION OF HORI ZONTAL WELL WITH COUPLED IN WELLBORE AN RESERVOIR PART3: CASE ANALYSIS

This paper applied the transient performance prediction model of horizontal well with coupled wellbore and reservoir that was found by Duan yong-gang etc to calculate and verify the model according to the result. The calculated results indi-cated that the effect of the horizontal well and reservoir formand parameters are fully considered in the model. In the hori-zontal well, because the frictional drop is far bigger than accel-eration drop, in the fact application we can ignore the effect of acceleration of liquid in the wellbore. The horizontal well has an optimal horizontal length range. We can rapidly find out the op-timal length by using the coupled model. The coupled model de-veloped had finer extended capability and provides a universal mode for reservoir engineering studies in different condition.