Title:
ELECTRONIC SYSTEM FOR MONITORING DRILLING CONDITIONS RELATING TO OIL AND GAS WELLS
United States Patent 3541852
US Patent References:
Device for recording drilling operations
- - 2287819
Means for logging drilling rates
- - 2539758
Amplifier for direct currents or for very low frequency currents
- - 2807678
PULSE RATE TO CURRENT CONVERTING AND LINEAR LOG INDICATING
- - 3445767
Device for recording drilling operations
- - 2287819
Means for logging drilling rates
- - 2539758
Amplifier for direct currents or for very low frequency currents
- - 2807678
PULSE RATE TO CURRENT CONVERTING AND LINEAR LOG INDICATING
- - 3445767
Inventors:
Brown, James H.
Young, William S.
Deason, William M.
Young, William S.
Deason, William M.
Publication Date:
11/24/1970
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Export Citation:
Assignee:
Dresser, Ind
Primary Class:
Other Classes:
73/149, 73/152.450
International Classes:
E21B21/08; E21B47/04; E21B21/00; E21B45/00