Dynamic efficiency optimization of piezoelectric actuator

Details Dynamic efficiency optimization of piezoelectric actuator Dynamic efficiency optimization of piezoelectric actuator

2011-01-18

2011-01-18

Wong, Albert K (Department: 2612)

Communications, electrical: acoustic wave systems and devices

Wellbore telemetering

Through drill string or casing

C340S854300, C340S855600, C340S856400, C310S311000, C361S271000, C073S632000, C333S200000

Reexamination Certificate

active

07872945

ABSTRACT:
This invention applies to the means whereby capacitance changes due to varying temperature and/or pressure in a piezoelectric transducer used for acoustic telemetry in a drilling environment is dynamically offset by modifying one or more parameters associated with the drive or control circuitry of said transducer. The object of the invention is to closely maintain the transducer in a resonant mode, thereby ensuring optimum energy consumption.

REFERENCES:
patent: 6710508 (2004-03-01), Ruby et al.
patent: 7514844 (2009-04-01), Unkrich
patent: 7522016 (2009-04-01), Toncich et al.
patent: 7561009 (2009-07-01), Larson et al.
patent: 7573350 (2009-08-01), Frank
patent: 7586391 (2009-09-01), Volatier et al.
patent: 7602102 (2009-10-01), Barber et al.
patent: 2003/0123326 (2003-07-01), Wisniewski et al.
patent: 2109373 (1994-04-01), None
Bedford and Drumheller,Introduction to Elastic Wave Propagation, John Wiley & Sons, pp. 73-82, 1994.
Bleaney, “Alternating current theory”in Electricity and Magnetism, pp. 201-207, 3rdEdition, OUP, 1976.
Drumheller, “Acoustical Properties of Drill Strings,”J. of Acous Society of America, vol. 85, No. 3, pp. 1047-1064, Mar. 1989.
Office Action from Canadian Intellectual Property Office, for Canadian Patent Application No. 2,585,046, dated Jul. 29, 2010.

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