Oil well coring method
United States Patent 2666620

Inventors:
Welge, Henry J.
WEST ROBERT C
Publication Date:
01/19/1954
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Assignee:
STANDARD OIL DEV CO
Primary Class:
166/288
Other Classes:
166/151, 166/66.400, 405/264, 166/294, 175/58, 166/60, 166/187, 166/165
International Classes:
E21B25/08; E21B25/00
US Patent References:
2334788Hydraulic bore cleaner and cement shoe
2341573Method of sealing earth formations
2378817Producing oil
2510300Rock coring method
2514585Method for drilling wells
Foreign References:
FR830518A