Integral elastic centralizer and manufacturing method thereof

The invention relates to an integral elastic centralizer and a manufacturing method thereof. The manufacturing method comprises the following steps that casting is carried out to obtain an elastic barrel body; a plurality of hollow-out parts are formed in the middle of the barrel body, and the multiple hollow-out parts are separated from one another, so that centralizing strip parts are formed between the adjacent hollow-out parts; the middle of the hollowed-out barrel protrudes outwards in the radial direction and deforms, so that the centralizing strip part forms an arc-shaped outline; and the integral elastic centralizer is not provided with a welding seam or a connecting structure. The integral elastic centralizer can smoothly pass through an underground narrowing part and a bent part so as to smoothly feed an oil pipe in place. 本发明涉及一种整体式弹性扶正器及其制造方法。该制造方法包括以下步骤：通过铸造得到具有弹性的筒体；在所述筒体的中部形成多个镂空部分，所述多个镂空部分彼此间隔开，以在相邻的镂空部分之间形成扶正条部分；以及使镂空后的筒体的中部径向向外凸出变形，以使所述扶正条部分形成弧形轮廓；其中，所述整体式弹性扶正器不具有焊缝或连接结构。这种扶正器能够顺利通过井下的缩窄部分和弯