Title:
WELL PRESSURE CONTROL APPARATUS
Document Type and Number:
United States Patent 3431965
Inventors:
Tillman, Cassius L.
Plaque It!
Sponsored by: Flash of Genius |
Publication Date:
03/11/1969
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Referenced by:
Export Citation:
Assignee:
Tillman, Cassius L.
Primary Class:
Other Classes:
285/123.300, 285/123.100
International Classes:
E21B33/043; E21B33/03; E21B43/12
US Patent References:
| 1900260 | Multicap casing head | |||
| 1927190 | Casing landing, packing and blowout prevention assembly | |||
| 2118094 | Combination casing head and christmas tree | |||
| 2652895 | Sealing device for well heads | |||
| 3084745 | Wellhead equipment | |||
| 3151680 | Well pressure control apparatus | |||
| 3177942 | Well head assembly with telescoping tubing | |||
| 3311168 | Well head assembly with means for effecting a preloaded seal |