| 摘要 |
Device for casing centering in well bore has centralizers with centering spring slats connected at the upper and the lower ends with muffs. Centralizers are placed one over another in such way that the muff connecting the lower ends of the centering springy slats of the upper centralizer is placed under the muff connecting the upper ends of the centering springy slats of the lower centrator, centering springy slats of the upper centralizer are placed between the centering springy slats of the lower centralizer. The muff connecting the lower ends of the centering springy slats of the upper centralizer is connected to the muff connecting the upper ends of centering springy slats of the lower centralizer with tension springs, at that the end upper and lower muffs of the device are fixed on drive string without possibility of motion, and the muffs placed in the device are installed on drive string with possibility of axial displacement. |
