Communications: electrical – Continuously variable indicating – With meter reading
Patent
1986-10-28
1988-11-15
Kyle, Deborah L.
Communications: electrical
Continuously variable indicating
With meter reading
367 84, 137499, G01V 100
Patent
active
047853000
ABSTRACT:
An improved acoustic signal generator has rotor and stator elements, each having a plurality of radially-extending lobes and intervening ports relatively positioned and configured to establish fluid dynamic forces that bias the generator into an open position, thereby imparting a "stable open" characteristic to the generator. The rotor is located downstream of the stator, and rotor lobes are outwardly tapered in the downstream direction and have underlap relative to the upstream stator lobes. The invention is especially suited for use in oil industry MWD operations to communicate downhole measurement data to a well surface during drilling. In one embodiment, undercuts on the rotor lobes impart a flutter action which clears debris.
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Chin Wilson C.
Trevino Jose A.
Kyle Deborah L.
Schlumberger Technology Corporation
Steinberger Brian S.
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