Patent · US Active

Method of interconnecting a drill rod with a drill string by means of a threaded connection, rod handling system and drill rig

US9745805B2 · kind B2 · utility

0Cited by

14References

17Claims

0Family size

Assignee

Sandvik Intellectual Property AB · SE

Inventors

Kent Evermark · Karlstad, SE
Peter Rosmark · Örebro, SE
Per Vilen · Nora, SE

Key dates

Filing date	Sep 6, 2013
Grant date	Aug 29, 2017
Priority date	—
Expiry date	Sep 13, 2034

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B19/24
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A method of interconnecting a drill rod with a drill string by a threaded connection is disclosed. The method includes axially aligning the drill rod with the drill string, rotating the drill rod in a disengagement rotational direction of the threaded connection, identifying a rotational position of the drill rod where thread ends of the rod and the drill string slip over each other, stopping the rotating within a predetermined period of identifying the rotational position, and rotating the drill rod in an engagement direction, such that the drill rod is interconnected with the drill string by the threaded connection.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.