漏入地层的冲砂液往往是损害井眼附近地层渗透率的根源,降低了渗透率将明显影响整个产层的生产能力. 由于修复油层的难度大,费用高,所以在修井作业中,应尽量防止或减轻对地层的损害.为了防止冲砂液对油层的污染,大港油田采油一厂试验了泡沫液冲砂新工艺,通 Rinsing fluid leaking into the formation is often the source of damage to the formation permeability near the borehole and reducing the permeability will obviously affect the production capacity of the whole formation.Because of the difficulty and cost of repairing the reservoir, Should try to prevent or reduce the damage to the formation.In order to prevent the red sand liquid polluting the reservoir, a production plant in Dagang Oilfield tested a new foam sand technology, through