Title:
Method of multiple string open hole cementing including the step of sealing off the annulus
United States Patent 3171481


Inventors:
Brown, Cicero C.
Application Number:
US21866062A
Publication Date:
03/02/1965
Filing Date:
08/22/1962
Assignee:
Brown, Oil Tools
Primary Class:
Other Classes:
166/313
International Classes:
E21B33/14
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