公开(公告)号：US20210277732A1

公开(公告)日：2021-09-09

申请号：US16807869

申请日：2020-03-03

Applicant: Schlumberger Technology Corporation

Inventor： Vishwanathan Parmeshwar ,  Jaijith Sreekantan ,  Pradeep Shetty ,  Sreekanth Asodi

IPC: E21B19/16 ,  G06T7/73

Abstract: Systems and methods for determining a vertical position of a tool joint between two pipe segments of a drill string relative to a rig floor are disclosed. A camera or other suitable optical device is positioned to observe a drill string as it is raised and lowered out of and into a wellbore. The camera is equipped to identify a feature of the pipe segments, and based on a knowledge of the dimensions of the various pipe segments, to locate the tool joint vertically relative to the rig floor. Knowing the vertical position of the tool joint allows automatic operations to be carried out, such as assembling and disassembling the pipe segments from the drill string.