Geometrical instruments – Distance measuring – Of length by rolling contact
Reexamination Certificate
2006-02-02
2008-05-27
Bennett, G. Bradley (Department: 2859)
Geometrical instruments
Distance measuring
Of length by rolling contact
C033S734000, C033S736000
Reexamination Certificate
active
07377051
ABSTRACT:
A tubing counter for counting coiled tubing inserted into a well includes an outer housing having a through passage for receiving the coiled tubing therethrough. In some embodiments, pressure rated connectors at both of the ends of the outer housing sealably connect the outer housing in series between the coiled tubing injector head and the outer casing of the well. A plurality of counting wheels are rotatably supported within the outer housing for rolling engagement along coiled tubing inserted through the outer housing while a counting mechanism records a number of rotations of each counting wheel independently of the other wheels to minimize counting errors. Locating the counter below the injector head and below the tubing stripper ensures that the tubing is cleaner and less likely to slip in contact with the counting wheels while also accounting for stretching of the tubing for more accurate measurement.
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Boyd Douglas Glen
Morris Collin Rickey
Reck Joseph Henry
Van Drecht Shawn Rodney
Battison Adrian D.
Bennett G. Bradley
Count-Rite Oilfield Solutions Inc.
Courson Tania C
Dupuis Ryan W.
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