Flexible turbulence device for well pipe
United States Patent 3240274
US Patent References:
Method for cementing wells
- - 1807050

Casing protector
- - 2163932

Well casing protector
- - 2166116

Drill-pipe buffer
- - 2166937

Casing centralizer
- - 2228648


Inventors:
Solum, James R.
Publication Date:
03/15/1966
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Assignee:
B & W INC
Primary Class:
166/241.600
International Classes:
E21B37/02; E21B37/00
US Patent References:
3072195Slip over collar type centralizer