(54) ELEVATOR SENSOR
(75) Inventors: Charles Michael Webre, Lafayette, LA (US); Michael Wayne Olivier, Broussard, LA (US); Jeremy Richard Angelle, Lafayette, LA (US); Vernon Joseph Bouligny, Jr., New Iberia, LA (US); Mark Stephen Sibille, Lafayette, LA (US); Richard J. Wiggins, Lafayette, LA (US); Brian D. Begnaud, Youngsville, LA (US)
(73) Assignee: Frank's Casing Crew and Rental Tools, Inc., Lafayette, LA (US)
( * ) Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 U.S.C. 154(b) by 33 days.
(21) Appl. No.: 10/728,443
(22) Filed: Dec. 5, 2003
(65) Prior Publication Data
US 2004/0159425 Al Aug. 19, 2004
Related U.S. Application Data
(63) Continuation-in-part of application No. 10/067,470, filed on Feb. 4, 2002, now abandoned.
(51) Int. CI.
E21B 19/06 (2006.01)
E21B 19/00 (2006.01)
E21B 47/00 (2006.01)
(52) U.S. CI 166/250.01; 166/77.52;
166/66; 175/40; 700/303
(58) Field of Classification Search 166/77.52,
166/250.01,66; 700/303; 175/40 See application file for complete search history.
(56) References Cited
U.S. PATENT DOCUMENTS
3,191,683 A * 6/1965 Alexander 166/53
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.
19 Claims, 9 Drawing Sheets