Subsurface well bore packing element
United States Patent 2988148
US Patent References:
Dump bailer for cementing wells
- - 1954608
Combination packer and swab
- - 2233013
Well head pipe suspension
- - 2751235
Pressure actuated seal between concentric pipes
- - 2754136
Dump bailer for cementing wells
- - 1954608
Combination packer and swab
- - 2233013
Well head pipe suspension
- - 2751235
Pressure actuated seal between concentric pipes
- - 2754136
Inventors:
Conrad, Martin B.
Muse, John F.
Muse, John F.
Publication Date:
06/13/1961
View Patent Images:
Export Citation:
Assignee:
BAKER OIL TOOLS INC
Primary Class:
Other Classes:
166/118, 277/334
International Classes:
E21B33/127; E21B33/12