Working member of a helical downhole motor for drilling wells
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United States of America Patent
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-
Jun 22, 1993
Grant Date -
N/A
app pub date -
Aug 8, 1991
filing date -
Aug 8, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A working member of a helical downhole motor can have the form of either a rotor with outer helical teeth or a stator with inner helical teeth. The working member includes separate sections having helical teeth arranged in succession, one after another, and interconnected by rings. Each ring has helical teeth coinciding in pitch and direction with the helical teeth of the sections, and equidistant in profile. This allows automatic orientation of the helical teeth of the sections of the working member.
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