Elevator sensor

US7182133B2 · kind B2 · utility

Assignee

• Frank's Casing Crew and Rental Tools, Inc. · US

Inventors

• Charles Michael Webre · Lafayette, US
• Michael Olivier · Broussard, US
• Jeremy Richard Angelle · Youngsville, US
• Vernon Bouligny · New Iberia, US
• Mark Stephen Sibille · Lafayette, US
• Richard Wiggins · Runaway Bay, US
• Brian David Begnaud · Youngsville, US

Key dates

• Filing date: Dec 5, 2003
• Grant date: Feb 27, 2007
• Expiry date: Jan 7, 2024

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21B44/00
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

At least one sensor is mounted for monitoring the vertical position of an elevator relative to selected features on a tubular string. A variety of sensor types is provided. Optional mounting arrangement permits the sensors to be situated close to a tubular and free to move laterally. Excess lateral movement of the tubular moves the mounting; thus, reducing the shock to the sensors. In an additional embodiment, a sensor can provide position indication for tools or other equipment being lowered into the wellbore or into a tubular. In yet another embodiment, sensors are mounted to both indicate selected features on a tubular string and the position of tools being lowered into the tubular string.