【摘要】 水平井冲砂既要做到将砂粒冲出地面又不能在井底对储层造成新的污染,这就要求采取合理的水平井冲砂液流量和冲砂压力。将水平井井筒和地层作为一个整体进行考虑,利用井筒中流体动力学原理和砂粒质点运动原理,研究了水平井水力冲砂最优工作参数的计算方法,给出了计算实例,为现场水平井冲砂工作制度的选择提供了一种新的思路。更多还原

【Abstract】 Sand washing in horizontal wells requires that the sand are carried out of surface without new damage on pay zones. This requires the reasonable flow rate and pressure in horizontal wells. Assuming that the wellbore and formation is a whole unity, using the theory fluid dynamics in wellbore and theory of particle movement, the method to calculate the optimum working parameters in hydraulic sand washing in horizontal wells was investigated, the actual calculation examples were provided. The results can provide a new method to select the working condition in hydraulic sand washing in horizontal wells.更多还原