Wells – Above ground apparatus – Moving tubing or cable into an existing well
Patent
1995-07-28
1996-09-10
Tsay, Frank
Wells
Above ground apparatus
Moving tubing or cable into an existing well
166 851, E21B 1922
Patent
active
055536689
ABSTRACT:
A twin carriage coiled tubing injector apparatus for use in inserting coiled tubing into a well, temporarily suspending the coiled tubing, and removing the tubing from the well. The apparatus includes a superstructure with a pair of spaced carriages disposed therein. The carriages each have a gripper chain drive system rotatably mounted thereon and movable therewith. An actuation and linkage system allows the carriage to be moved toward and away from one another in a transverse direction with respect to the superstructure. This movement allows gripper chain systems to be engaged or disengaged from tubing extending through the apparatus. A roller chain system is disposed in each of the carriages and is adapted for engagement and support of the gripper chain systems as the gripper chain systems are engaged with the tubing. A timing gear system may optionally be provided to insure that the rotational speed of the gripper chain systems are substantially constant.
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Otis Engineering Corporation Products and Services Catalog, 1989, pp. 284-290.
Photographs 1, 2, 3, and 4 of a prior art apparatus.
Council Malcolm N.
Johnson Carl H.
Christian Stephen R.
Halliburton Company
Kennedy Neal R.
Tsay Frank
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