Title:
Well logging
United States Patent 2569390
Inventors:
Sewell, Benjamin W.
Publication Date:
09/25/1951
Export Citation:
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Assignee:
STANDARD OIL DEV CO
Primary Class:
175/50
Other Classes:
73/152.03, 175/104, 175/207, 242/398, 324/356, 340/854.9
International Classes:
E21B47/00; G01V3/34; E21B47/00; G01V3/18
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US Patent References:
2370818Well measurement
2249769Electrical system for exploring drill holes