Methods of and apparatus for completing multiple zone wells
United States Patent 2991833
US Patent References:
/1014272.html
- - 1014272

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- - 2187635

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- - 2231282

Packing ring
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Inventors:
Brown, Cicero C.
Cochran, Chudleigh B.
Publication Date:
07/11/1961
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Assignee:
Brown
Primary Class:
166/313
Other Classes:
166/134, 166/189, 166/122, 166/193, 166/129, 166/191, 166/187, 166/127
International Classes:
E21B33/122; E21B33/1295; E21B43/14; E21B33/12; E21B43/00
US Patent References:
2780291Storm choke and packer for dual-zone completion