Coil tubing injector unit
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United States of America Patent
Stats
-
Jul 28, 1992
Grant Date -
N/A
app pub date -
May 23, 1991
filing date -
May 23, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A coil tubing injector unit is shown for injecting tubing into a well bore. A main injector frame is positioned adjacent the well bore and includes a longitudinal opening which defines a vertical run for the injector unit which is alignable with the well bore vertical axis. Gripper block assemblies are carried on the main injector frame and include plier-like halves which are pivotable between an open position and a closed, gripping position as the assemblies enter the vertical run so that the plier halves grip a selected length of tubing fed into the main injector frame along the central vertical axis of the injector unit to inject the tubing into the well bore. A drive mechanism including a chain drive located on the main injector frame drives the gripper block assemblies in a continuous loop within the main injector frame.
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