Title :
Variable voltage oil well drilling equipment
Author_Institution :
Standard Oil Company of California, LaHabra, Calif.
Abstract :
VARIABLE voltage d-c drive is stated to be the most recent advance in electric oil well drilling equipment and has been used successfully by both the cable tool and the rotary method of drilling. A discussion of the methods of drilling is given in this paper in order to show the characteristics required of the electrical equipment.
Keywords :
Bridge circuits; Conductors; Frequency measurement; Generators; Power measurement; Reactive power; Voltage measurement;
Journal_Title :
Electrical Engineering
DOI :
10.1109/EE.1933.6430585
