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针对赵46井裂缝性砾岩储层的特点,采用了以单向压力封闭剂DCL-1和低荧光油溶性暂堵剂YD-1为主处理剂的钻开油层完井液体系。现场应用表明,该屏蔽暂堵完井液性能稳定、流变参数合理、携砂能力强、润滑性好,密度始终小于1.18g/cm~3,暂堵率为98.84％,反排解堵率达94.57％,满足了赵46井油层钻井和保护油层的需要。
According to the characteristics of fractured conglomerate reservoir in Zhaogou 46 well, drilling fluid completion fluid system with one-way pressure sealant DCL-1 and low fluorescence oil-soluble temporary blocking agent YD-1 as the main treatment agent was adopted. Field application shows that the temporary blocking plugging completion fluid of the shield has stable performance, reasonable rheological parameters, good sand carrying capacity and good lubricity. The density is always less than 1.18g / cm ~ 3 and the temporary plugging rate is 98.84% 94.57%, which meets the need of well drilling and protecting the oil layer of Well ZHAO-46.