Patent ID: 7377051

Claim:
A tubing counter in combination with a well having an outer casing and a coiled tubing injector head connected above the outer casing and arranged to insert coiled tubing into the well, the tubing counter being arranged for counting coiled tubing inserted into the well and comprising: an outer housing comprising a counter casing which is arranged to be pressurized and which has a through passage extending between ends of the housing such that the outer housing is arranged to receive the coiled tubing therethrough; the outer housing being connected in series between the coiled tubing injector head and the outer casing of the well; pressure rated connectors connected at both of the ends of the outer housing and connecting the outer housing in between the coiled tubing injector head and the outer casing of the well in sealing engagement therewith; at least one counting wheel rotatably supported within the outer housing and arranged to be in rolling engagement along coiled tubing inserted through the outer housing; and a counting mechanism arranged to record a number of rotations of said at least one counting wheel.