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Well string injection system and method

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Title: Well string injection system and method.
Abstract: A continuous feed injection unit used for example for injection and removal of continuous well string from wells operates in a dual speed configuration. The unit comprises a first hydraulic motor, a second hydraulic motor, cooperating continuous well string gripping chains connected to be driven by the first and second hydraulic motors, a hydraulic power supply connected to provide pressurized fluid to the first and second hydraulic motors and a control system for the hydraulic power supply. The control system for the hydraulic power supply has a motor speed control valve with at least a first and second operating configuration, the first operating configuration providing power fluid to the first and second hydraulic motors in parallel and the second operating configuration providing power fluid to the first and second hydraulic motors in series. The hydraulic power supply may be a conventional power tong hydraulic supply. ...


- Boise, ID, US
Inventors: Emanuel Kulhanek, Mark D. Widney
USPTO Applicaton #: #20080017388 - Class: 166381000 (USPTO) - 01/24/08 - Class 166 


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Related Patent Categories: Wells, Processes, Placing Or Shifting Well Part
The Patent Description & Claims data below is from USPTO Patent Application 20080017388, Well string injection system and method.

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Previous Patent Application:
Methods for expanding tubular strings and isolating subterranean zones
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Electric pressure actuating tool and method
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Wells
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stats Patent Info
Application #
US 20080017388 A1
Publish Date
01/24/2008
Document #
11824776
File Date
07/02/2007
USPTO Class
166381000
Other USPTO Classes
166077100, 166077300
International Class
/
Drawings
4



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