Communications – electrical: acoustic wave systems and devices – Wellbore telemetering – Through well fluids
Patent
1984-09-24
1987-08-11
Kyle, Deborah L.
Communications, electrical: acoustic wave systems and devices
Wellbore telemetering
Through well fluids
1374875, 340861, 34087039, 361152, 367912, G01V 1137, F16K 3102
Patent
active
046866582
ABSTRACT:
The present invention is directed to an apparatus and method for actuating a valve. The present invention is particularly useful with a valve for imparting pressure pulses in a pressure pulse telemetry system. The present invention relates to an apparatus and method for actuating a valve from a first to a second position wherein the actuating force is adjusted in response to a measured value characteristic of the minimum force necessary to actuate the valve. The apparatus and method of the present invention advantageously and beneficially reduces the power requirement for actuating the valve, prolonging battery life, and minimizes the deleterious affects of excess mechanical and electrical energy on the valve and circuit components, prolonging valve and circuit life.
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Griffiths John E.
Kyle Deborah L.
NL Industries Inc.
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