Reeled tubing counter assembly and measuring method

Patent · Tue Aug 10 04:00:00 EDT 1993

OSTI ID:6230451

Connell, M L

A method is described of measuring the tubing inserted into a well which comprises the steps of: (a) providing an elongate tubing coiled on a supply reel wherein the tubing is unspooled from the reel and is subject to curvature upon unreeling; (b) guiding the tubing through a set of gripping blocks for straightening wherein the tubing is directed for entry axially of the well in which the tubing is inserted; (c) moving the tubing into the well by motion applied to the tubing through positive engagement of a drive chain in a tubing injector; (d) engaging the drive chain of the tubing injector positively with a sprocket which is rotated in proportion to movement of the drive chain; and (e) forming a string of output pulses from a pulse generator which is rotated in a fixed ratio to the sprocket engaging the drive chain so that the pulses occur in proportion to length of tubing traversing with the drive chain. An apparatus is described for inserting a tubing into a well borehole in conjunction with a tubing injector, the apparatus comprising: (a) a sprocket engaged with a drive chain of the injector to rotate in proportion to movement of the drive chain; (b) a pulse generator; (c) means connected between said pulse generator and said drive chain sprocket providing a fixed ratio so that chain motion is converted into a pulse train proportionate to chain motion.

• Assignee: Halliburton Geophysical Services, Inc., Houston, TX (United States)
• Patent Number(s): A; US 5234053
• Application Number: PPN: US 7-914077
• OSTI ID: 6230451
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
422000* -- Engineering-- Mining & Underground Engineering-- (1980-)
CORRELATIONS
DESIGN
DIMENSIONS
INSTALLATION
LENGTH
MACHINE PARTS
MATERIALS HANDLING
MEASURING INSTRUMENTS
MECHANICAL TRANSMISSIONS
MONITORING
PIPES
WELLS