公开(公告)号：US11346199B2

公开(公告)日：2022-05-31

申请号：US16643530

申请日：2018-09-05

Applicant: Shuhao Liu

Inventor： Junhong Chen ,  Shufei Liu ,  Shice Su ,  Hansen Liu ,  Xiangmeike Liu

IPC: E21B7/28 ,  E21B17/10 ,  E21B7/10 ,  E21B7/06 ,  F04B47/12 ,  E21B43/38

Abstract: A fluid separating device comprises: a cylinder; a plurality of separators disposed around a cylinder; a first elastic piece disposed between one of the separators and the cylinder and applying an elastic force to the separator outwardly in the radial direction of the cylinder; a first guiding device passing through the cylinder axially and configured to reciprocate between an expanded position and a contracted position in the axial direction of the cylinder; a second guiding device penetrating the cylinder, connected to the separator at one end, and slidably fitted with the first guiding device at the other end via a fitting surface. The fluid separating device eliminates the friction between the separator and the inner wall of the wellhole when descending, therefore descending to the bottom of the well quickly.