公开(公告)号：US20170240394A1

公开(公告)日：2017-08-24

申请号：US15437251

申请日：2017-02-20

申请人： Shane Eastman ,  Paul George

发明人： Shane Eastman ,  Paul George

IPC分类号： B66D3/26 ,  F16N31/00 ,  F16N19/00

CPC分类号： B66D3/26 ,  B66D3/08 ,  E21B19/008 ,  E21B19/22 ,  E21B23/14 ,  F16N7/28 ,  F16N19/00 ,  F16N31/00 ,  F16N2210/34

摘要： Devices for use with wireline sheaves are provided that allow for capturing grease freed from a wireline as it passes around an upper sheave during wireline retraction from a wellbore. Once the freed grease is captured, it is reapplied to the wireline as it passes from the upper sheave to the lower sheave where the grease may be captured for disposal.