Well cementing apparatus and method
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United States of America Patent
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Jun 2, 2009
Grant Date -
Apr 19, 2007
app pub date -
Mar 27, 2006
filing date -
Mar 14, 2005
priority date (Note) -
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Abstract
A cementing apparatus for use in cementing operations using concentric tubing or drill string such as concentric drill pipe, concentric coiled tubing, and the like is provided having an isolation cementing tool and a cementing flow control means. Concentric tubing or drill string adapted for use in cementing a well is further disclosed. A method for cementing a well using concentric tubing or drill string is also provided.
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