Orienting and locking conductor
United States Patent 3255823
US Patent References:
Pipe supporting means
- - 1849374

Control head for wells
- - 1944840

Well control head
- - 2312487

Wellhead construction
- - 2546638

Well packer
- - 2577068


Inventors:
Barton, Robert D.
Publication Date:
06/14/1966
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Assignee:
FMC CORP
Primary Class:
166/85.100
Other Classes:
166/88.200
International Classes:
E21B33/04; E21B33/00; E21B33/03
US Patent References:
2706525Stop for the adjustable screw of a punch press ram
3043371Valved tubing hanger
3078921Pipe hanging apparatus for use in multiple completed wells