Patent №
US 9,784,094
Granted
2017-10-10
Filed 2014
Owner
NATIONAL OILWELL VARCO, L.P.
Lab
—
AI components
1
planning
Assignment
Recorded
Dataset
AIPD
2023_r1 edition
Application
14396703
A method for drill pipe tallying includes detecting that a drill bit (14) has tripped in through a rig floor and monitoring movement of a drawworks (6) that supports the drill bit and a length of drill pipe. If a tag interrogating device does not detect a wireless tag (26) associated with a set of slips, the method includes counting the movement of the drawworks toward a drill pipe tally. If a tag interrogating device detects a wireless tag associated with a set of slips, the method includes not counting the movement of the drawworks toward the drill pipe tally. The tag interrogating device is positioned at a fixed location relative to the rig floor.
AI classification
Ownership
NATIONAL OILWELL VARCO, L.P.
assignment · 340950817
Assignors
LIMBACHER, CHRISTOPHER LEE
On an employer assignment, the assignors are typically the inventors.