Preparation method of high-load long-acting slow-release scale inhibition particles

The invention discloses a preparation method of high-load long-acting slow-release scale inhibition particles, and belongs to the field of oilfield chemistry. A scale inhibitor and an inorganic nano-carrier serving as one of slow-release components are assembled into a homogeneous whole in the form of a solid solution, and the homogeneous whole is coated with a layer of controllable swelling polymer. When the polymer swells in an environmental medium, the scale inhibitor is slowly released. A dual-release control mechanism of polymer swelling and desorption of the scale inhibitor from the inorganic nano-carrier is utilized, so that the scale inhibitor is slowly released in the wellbore, and the protection effect on the wellbore is prolonged. 一种高负载长效缓释阻垢颗粒的制备方法，属于油田化学领域。本发明将阻垢剂与缓释组份之一的无机纳米载体以固溶体的形式组装成为一个均相整体，外面包覆一层可控溶胀的聚合物。当聚合物在环境介质中发生溶胀时，阻垢剂缓慢释放。利用聚合物溶胀和阻垢剂从无机纳米载体解吸的双重释放控制机制，使得其在井筒内缓慢释放，从而延长对井筒的保护作用。