Method and apparatus for carrying out operations at underwater installations
United States Patent 3179176
US Patent References:
Marine drilling
- - 2512783
Underwater inspection apparatus
- - 2981347
Underwater drilling guide
- - 2984308
Method and apparatus for installing guide lines at underwater wellheads
- - 3050140
Underwater wellhead apparatus and method
- - 3099316
Marine drilling
- - 2512783
Underwater inspection apparatus
- - 2981347
Underwater drilling guide
- - 2984308
Method and apparatus for installing guide lines at underwater wellheads
- - 3050140
Underwater wellhead apparatus and method
- - 3099316
Inventors:
Goepfert, Benjamin L.
Publication Date:
04/20/1965
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Export Citation:
Assignee:
SHELL OIL CO
Primary Class:
Other Classes:
175/7, 166/340, 166/360, 166/352
International Classes:
E21B33/035; E21B41/04; E21B43/01; E21B33/03; E21B41/00; E21B43/00